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Atul K.

Noida, India

$30/hr
4.9
170 jobs

๐—ง๐—ผ๐—ฝ ๐—ฅ๐—ฎ๐˜๐—ฒ๐—ฑ ๐—”๐—œ ๐—˜๐—ป๐—ด๐—ถ๐—ป๐—ฒ๐—ฒ๐—ฟ & ๐—™๐˜‚๐—น๐—น-๐—ฆ๐˜๐—ฎ๐—ฐ๐—ธ ๐——๐—ฒ๐˜ƒ๐—ฒ๐—น๐—ผ๐—ฝ๐—ฒ๐—ฟ | 8+ ๐—ฌ๐—ฒ๐—ฎ๐—ฟ๐˜€ | ๐Ÿญ% ๐—ผ๐—ณ ๐—จ๐—ฝ๐˜„๐—ผ๐—ฟ๐—ธ | ๐Ÿญ๐Ÿฌ๐Ÿฌ% ๐—๐—ผ๐—ฏ ๐—ฆ๐˜‚๐—ฐ๐—ฐ๐—ฒ๐˜€๐˜€. โœ… $300K+ Total earnings โœ…8+ Years experience as Fullstack Developer โœ… 80+ Projects Completed. โœ…Top Rated Plus. โœ… 100% Job Success Rate. โœ… AWS certified โœ… Python certified โœ…50hrs/week available โœ… 4+ AI/ML Integrations ๐Ÿ”ด I am in the ๐—ง๐—ผ๐—ฝ ๐Ÿญ% overall on Upwork. ๐Ÿ”ด I am in the ๐—ง๐—ผ๐—ฝ ๐Ÿฐ% overall on Stack Overflow. ๐€๐ˆ ๐€๐ ๐ž๐ง๐ญ / ๐•๐จ๐ข๐œ๐ž ๐€๐ ๐ž๐ง๐ญ๐ฌ: ๐‚๐ซ๐ž๐ฐ๐€๐ˆ / ๐€๐ฎ๐ญ๐จ๐†๐ž๐ง / ๐€๐ฆ๐š๐ณ๐จ๐ง ๐๐จ๐ฅ๐ฅ๐ฒ / ๐ƒ๐ž๐ž๐ฉ๐ ๐ซ๐š๐ฆ / ๐‘๐š๐ฌ๐š ๐€๐ˆ / ๐‘๐ข๐ฏ๐ž๐ซ๐ฌ๐ข๐๐ž ๐’๐ƒ๐Š / ๐€๐ณ๐ฎ๐ซ๐ž ๐€๐ˆ ๐’๐ฉ๐ž๐ž๐œ๐ก/๐‹๐‹๐Œ ๐…๐ข๐ง๐ž๐ญ๐ฎ๐ง๐ข๐ง๐ : ๐”๐ฌ๐ข๐ง๐  ๐๐„๐…๐“ / ๐‹๐จ๐‘๐€ / ๐๐‹๐จ๐‘๐€ / ๐‘๐‹๐‡๐… / ๐ƒ๐๐Ž / ๐’๐…๐“ ๐ฐ๐ข๐ญ๐ก ๐”๐ง๐ฌ๐ฅ๐จ๐ญ๐ก / ๐€๐ฑ๐จ๐ฅ๐จ๐ญ๐ฅ / ๐‡๐ฎ๐ ๐ ๐ข๐ง๐ ๐…๐š๐œ๐ž ๐€๐ฎ๐ญ๐จ๐“๐ซ๐š๐ข๐ง / ๐’๐š๐ ๐ž๐Œ๐š๐ค๐ž๐ซ ๐“๐ซ๐š๐ข๐ง๐ข๐ง๐ /๐Ž๐ฉ๐ž๐ง-๐’๐จ๐ฎ๐ซ๐œ๐ž ๐‹๐‹๐Œ๐ฌ: ๐‹๐‹๐€๐Œ๐€ ๐Ÿ‘ / ๐Œ๐ข๐ฌ๐ญ๐ซ๐š๐ฅ ๐Ÿ•๐ / ๐Œ๐ข๐ฑ๐ญ๐ซ๐š๐ฅ ๐Ÿ–๐ฑ๐Ÿ•๐ / ๐…๐š๐ฅ๐œ๐จ๐ง / ๐†๐ž๐ฆ๐ฆ๐š / ๐๐ฅ๐จ๐จ๐ฆ / ๐Ž๐ซ๐œ๐š ๐Œ๐ข๐ง๐ข / ๐†๐ฎ๐š๐ง๐š๐œ๐จ/๐…๐š๐ฌ๐ญ ๐ˆ๐ง๐Ÿ๐ž๐ซ๐ž๐ง๐œ๐ž: ๐ฏ๐‹๐‹๐Œ / ๐“๐†๐ˆ / ๐“๐ž๐ง๐ฌ๐จ๐ซ๐‘๐“-๐‹๐‹๐Œ / ๐’๐Š๐๐ข๐ฅ๐จ๐ญ/๐๐ซ๐จ๐ฆ๐ฉ๐ญ ๐„๐ง๐ ๐ข๐ง๐ž๐ž๐ซ๐ข๐ง๐ : ๐Œ๐ฎ๐ฅ๐ญ๐ข-๐ญ๐ฎ๐ซ๐ง / ๐…๐ž๐ฐ-๐ฌ๐ก๐จ๐ญ / ๐™๐ž๐ซ๐จ-๐ฌ๐ก๐จ๐ญ / ๐‘๐€๐†-๐๐š๐ฌ๐ž๐ / ๐๐ซ๐จ๐ ๐ซ๐š๐ฆ๐ฆ๐š๐›๐ฅ๐ž ๐๐ข๐ฉ๐ž๐ฅ๐ข๐ง๐ž๐ฌ/๐๐ฎ๐š๐ง๐ญ๐ข๐ณ๐š๐ญ๐ข๐จ๐ง: ๐€๐–๐ / ๐†๐๐“๐ / ๐†๐†๐”๐… / ๐†๐†๐Œ๐‹ / ๐๐‹๐Ž๐‘๐€ / ๐๐“๐ / ๐ƒ๐/๐‘๐€๐† ๐’๐ฒ๐ฌ๐ญ๐ž๐ฆ๐ฌ & ๐ƒ๐š๐ญ๐š๐›๐š๐ฌ๐ž๐ฌ: ๐‹๐š๐ง๐ ๐‚๐ก๐š๐ข๐ง / ๐‹๐ฅ๐š๐ฆ๐š๐ˆ๐ง๐๐ž๐ฑ / ๐‚๐ก๐ซ๐จ๐ฆ๐š / ๐…๐€๐ˆ๐’๐’ / ๐๐ข๐ง๐ž๐œ๐จ๐ง๐ž / ๐๐๐ซ๐š๐ง๐ญ / ๐–๐ž๐š๐ฏ๐ข๐š๐ญ๐ž / ๐Œ๐ข๐ฅ๐ฏ๐ฎ๐ฌ Greetings! I am Atul Kumar, a seasoned developer with over 8+ years of experience in web application and software development. Working with LLMs for the past 8+ years and have good expertise in AI Agents development using langchain, LlamaIndex, and LLMs like Claude, GPT4o, Amazon Bedrock, Ollama ๐Ÿ”น AI Agents / Voice Agents: CrewAI, AutoGen, Amazon Polly, Deepgram, Rasa AI ๐Ÿ”น LLM Fine-tuning: PEFT, LoRA, QLoRA, RLHF, DPO with Unsloth, Axolotl, HuggingFace AutoTrain ๐Ÿ”น Open-Source LLMs: LLaMA 3, Mistral 7B, Mixtral 8ร—7B, Falcon, Gemma ๐Ÿ”น Inference Optimization: vLLM, TGI, TensorRT-LLM ๐Ÿ”น Prompt Engineering: Multi-turn, Few-shot, Zero-shot, RAG-based prompts ๐Ÿ”น Quantization: AWQ, GPTQ, GGUF, GGML ๐Ÿ”น RAG Systems: LangChain, LlamaIndex, ChromaDB, FAISS, Pinecone, Qdrant ๐Ÿ”น Data Pipeline: Synthetic dataset generation, LLM evaluation frameworks ๐Ÿ”น LLM Deployment: AWS Sagemaker, RunPod, GCP AI Platform, Vercel AI SDK ๐Ÿ–ฅ๏ธ ๐—•๐—ฎ๐—ฐ๐—ธ๐—ฒ๐—ป๐—ฑ ๐—ฆ๐—ธ๐—ถ๐—น๐—น๐˜€: ๐Ÿ”น Proficient in Node.js, Express.js, Python, Django, Flask, AWS Lambda for backend API. ๐Ÿ”น Experienced with relational & NoSQL databases: MySQL, PostgreSQL, MongoDB, Firebase, Firestore. ๐Ÿ”น Skilled in Python FastAPI, REST API, GraphQL API development, and database schema design. ๐Ÿ”น Knowledgeable in Redis, Docker, Kubernetes, AWS EC2, S3, Nginx for scalable infrastructure. ๐Ÿ”น Experienced with Nest.js for enterprise-grade server-side applications. ๐Ÿ”น LangChain, LangServe, LangSmith, HuggingFace, Transformers for AI/LLM integrations. ๐Ÿ”น Vector Databases: Chroma, FAISS, Pinecone, Qdrant for RAG pipelines. ๐Ÿ”น Low-code AI tools: Flowise AI, LangFlow, StackAI for rapid prototyping. ๐Ÿ”น Familiar with Celery task queues, testing frameworks (Pytest, Unittest), and automation tools like Selenium. ๐ŸŒ ๐—™๐—ฟ๐—ผ๐—ป๐˜๐—ฒ๐—ป๐—ฑ ๐—ฆ๐—ธ๐—ถ๐—น๐—น๐˜€: ๐Ÿ”น Proficient in TypeScript, Redux Toolkit, Tailwind CSS with Next.js for high-performance frontends. ๐Ÿ”น Skilled in building Progressive Web Apps (PWA) and Single Page Applications (SPA). ๐Ÿ”น Expert in Vue.js, Nuxt.js, React.js, Next.js, HTML5, CSS3, React Native for responsive and cross-platform UIs. ๐Ÿ› ๏ธ ๐—ง๐—ผ๐—ผ๐—น๐˜€ & ๐—ง๐—ฒ๐—ฐ๐—ต๐—ป๐—ผ๐—น๐—ผ๐—ด๐—ถ๐—ฒ๐˜€: ๐Ÿ”น Skilled in Python ML libraries: Scikit-learn, Numpy, Pandas, Matplotlib, Seaborn. ๐Ÿ”น Familiar with OpenAI APIs, Whisper, GPT models, ChatGPT integration, and AI chatbot deployment. ๐Ÿ”น Experienced with AWS (Lambda, S3, EC2, Sagemaker), Git/GitHub, and Linux environments (Ubuntu, CentOS). ๐ŸŒŸ ๐—”๐—ฑ๐˜ƒ๐—ฎ๐—ป๐—ฐ๐—ฒ๐—ฑ ๐—”๐—œ & ๐—Ÿ๐—Ÿ๐—  ๐—ฆ๐—ธ๐—ถ๐—น๐—น๐˜€: ๐Ÿ”น AI Agents / Voice Assistants: CrewAI, AutoGen, Amazon Polly, Deepgram, Rasa AI. ๐Ÿ”น Open-Source LLMs: LLaMA 3, Mistral 7B, Mixtral 8ร—7B, Falcon, Gemma. ๐Ÿ”น Inference Optimization: vLLM, TGI, TensorRT-LLM for high-speed deployments. ๐Ÿ”น Prompt Engineering: Multi-turn, Few-shot, Zero-shot, RAG-based prompts. ๐Ÿ”น Quantization: AWQ, GPTQ, GGUF, GGML for efficient LLM deployment. ๐Ÿ”น LLM Fine-tuning: PEFT, LoRA, QLoRA, RLHF, DPO with Unsloth, Axolotl, H My expertise spans both frontend and backend technologies, as well as a variety of tools and additional skills that enable me to deliver comprehensive solutions. I am dedicated to providing high-quality, efficient solutions that cater to the unique needs of each project. My diverse skill set allows me to approach challenges from multiple angles, ensuring robust and innovative solutions. Warm regards, Atul Kumar

  • AI Model Integration
  • AI Bot
  • AI Chatbot
  • AI Development
  • AI Text-to-Speech
  • AI Text-to-Image
  • AI Speech-to-Text
  • AI App Development
  • AI Agent Development
  • AI Mobile App Development
  • AI Image Generation
  • AI Implementation
  • AI Platform
  • AI Security
  • AI Trading
Muhammad L.

Orlando, FLORIDA

$15/hr
5.0
314 jobs

With 10+ years of experience in software development and 5+ years as a Top Rated freelancer on Upwork, I help startups, founders, and businesses build scalable digital products using Bubble, AI automation, and data-driven dashboard solutions. I specialize in turning ideas into production-ready applications with fast execution, clean architecture, and business-focused functionality. Core Expertise: Bubble Development & No-Code Solutions * Custom Bubble web applications * SaaS MVP development * Internal business tools & client portals * Workflow automation & scalable database architecture * Responsive UI/UX implementation * Marketplace, CRM, and platform development AI Integration & Automation * OpenAI, ChatGPT, Claude, Gemini integrations * AI powered workflows & automation systems * AI chat assistants & custom AI tools * API integrations & third-party automation * CRM and operational process automation * AI enhanced business applications Power BI & Dashboard Development * Interactive Power BI dashboards * KPI reporting & business intelligence solutions * Data visualization & analytics systems * Executive reporting dashboards * Operational and sales performance tracking * Automated reporting workflows Full Stack Development * Next.js, React.js, Node.js * React Native mobile applications * REST API integration * Custom backend logic & scalable architectures Why Clients Work With Me: * Top Rated Upwork freelancer with long-term client relationships * Strong understanding of both business operations and technology * Fast delivery without compromising scalability or quality * Clear communication and structured project management * Focused on building systems that improve efficiency and growth Recent Projects Include: * AI powered SaaS applications using Bubble * Business intelligence dashboards in Power BI * CRM and workflow automation systems * Marketplace and service platforms * AI chat assistants trained on custom business data * Operational dashboards and reporting systems If you need a Bubble expert who can combine AI automation, Power BI dashboards, and scalable product development into one streamlined solution, let's discuss your project.

  • Bubble.io
  • Microsoft Power BI
  • Front-End Development
  • Back-End Development
  • React Native
  • Next.js
  • React
  • Data Warehousing
  • Data Visualization
  • SaaS Development
  • AI App Development
Satyam S.

Lucknow, India

$47/hr
4.9
56 jobs

I've saved companies over $120K every year on manual work and built multiple SaaS platforms from ground to a combined $110K ARR. If your team is wasting hours moving data between tools, your automations break the second an app updates, and you're hitting the limits of basic no-code setups, I'm the guy who fixes it. Send me an invite or a message and I'll send you a personalized Loom audit of your workflow within 24 hours. Just honest observations, no pitch, completely free. A little more about me: I help businesses scale by combining full stack engineering with AI workflows and automation. I don't just link two apps together with basic tools that break next week. I build solid, reliable infrastructure with proper documentation. I've deployed 49 completed projects, writing the actual APIs, databases, and custom backend code behind the automation so the systems keep running when someone changes a field name at 2 AM. I'm a Microsoft Certified AI Engineer (AI-102) and an Upwork Top Rated Developer. You can't fake that status. It's earned through keeping a flawless 100% Job Success Score across dozens of live systems, project after project. - $120K+ in annual operational savings generated for businesses by replacing manual tasks - $110K ARR generated across multiple live B2B and B2C SaaS platforms I engineered from MVP to production - 49 completed projects with a perfect 100% Job Success Score - Deployed autonomous AI Agents to automate lead qualification and customer calls - I build the custom backend infrastructure behind your workflows too, using NestJS, Node.js, FastAPI, and Golang to connect systems beyond no-code limits If you want someone who will look deep into your tech stack, fix your broken workflows, and build full stack AI automation that actually lasts, send me an invite and let's have a little chit-chat. EXPERTISE Full Stack AI Engineer | AI Integration | AI Automation | Business Process Automation | AI Agent Development | Lead Generation Automation | CRM Automation | SaaS Automation AI & LLM DEVELOPMENT OpenAI API | Claude API | Gemini API | MCP (Model Context Protocol) | LangChain | LangGraph | RAG Systems | Knowledge Base Chatbots | Document Processing | Lovable | Claude Code | Hermes Agents WORKFLOW PLATFORMS n8n Expert | Self-Hosted n8n | Make Expert | Zapier Expert | Pipedream Development BUSINESS SYSTEMS & INTEGRATIONS Airtable Expert | Google Sheets Automation | Notion | HubSpot Integration | GoHighLevel | Pipedrive | ClickUp | BotPress | Slack | WhatsApp AI Agents BACKEND & FULL STACK Backend Development | Full Stack Development | SaaS Development | AI SaaS Development | API & Webhook Integration | NestJS | Node.js | FastAPI | PostgreSQL | MongoDB | Golang | Microservices

  • API Integration
  • AI Development
  • Full-Stack Development
  • Back-End Development
  • SaaS Development
  • AI Agent Development
  • API Development
  • Automation
  • API
  • n8n
  • Make.com
  • Zapier
  • AI Chatbot
  • AI Implementation
  • Google Sheets Automation
  • JavaScript
  • Python
  • Node.js
  • ChatGPT
  • OpenAI API
Mujtaba S.

Lahore, Pakistan

$75/hr
4.9
78 jobs

I help with full-stack AI product work at different stages: a single AI feature, a RAG pipeline, an AI agent, a Voice AI workflow, an MCP integration, a SaaS MVP, or a full production platform. Most AI projects do not fail because the model is bad. They fail because the scope is unclear, the workflow is messy, the data is not structured, the integrations are fragile, or the prototype never becomes a production system. โญ Top Rated Plus | Top 3% of performers on Upwork โœ… 10+ years building SaaS and AI products | 100+ projects delivered โœ… AI that ships: RAG, AI agents, MCP, Voice AI, LLM integration โœ… Full stack: Next.js, React, TypeScript, Python, Node.js, PostgreSQL, AWS โœ… SaaS, MVPs, automation, fintech, healthcare, construction, legal tech, and sales products You can hire me when: - You need one AI feature added to an existing app - You want OpenAI, Claude, Gemini, or MCP integrated into your product - You need a RAG system over PDFs, documents, knowledge bases, or internal data - You want a voice AI agent for calls, bookings, lead qualification, or CRM updates - You have a workflow involving documents, calls, follow-ups, data entry, or reporting that should be automated - Your MVP is half-built, buggy, slow, or stuck before launch - You need someone to build a full SaaS product from idea to deployment I work well on both small and large projects. If the right first step is a quick audit, prototype, bug fix, integration, or one-week milestone, I will tell you that. If the project needs a full build, I can own the architecture, frontend, backend, AI layer, deployment, and documentation. The part most AI freelancers skip: AI is rarely the whole product. It usually needs a backend, dashboard, auth, billing, permissions, logs, human review, and deployment around it. I build both the AI layer and the product around it. WHAT I DO: - AI SaaS & MVP builds: idea to deployed product with auth, billing, dashboards, and AI layer - AI inside existing products: RAG, agents, MCP, LLM features, document AI, and automation - Voice AI: agents that answer calls, book appointments, qualify leads, and log to your CRM - RAG and document AI: source-grounded answers, OCR, extraction, citations, and review queues - Workflow automation: documents, follow-ups, data entry, reporting, and API integrations - Rescue & ship: half-built MVPs refactored, hardened, and launched RECENT DELIVERIES: - AI sales CRM: call transcription, follow-up automation, multi-tenant pipelines - RAG document platform with every answer cited to source - AI financial intelligence platform: open banking + accounting sync into one ledger - AI voice agents for healthcare and sales, answering real calls daily - Turnkey B2B SaaS platform for the construction industry, end to end HOW I WORK: - I start by understanding the workflow, users, data, and business goal - I suggest the smallest useful first milestone when possible - I scope clearly before code is written, so you know cost and timeline up front - I can work on focused tasks, short prototypes, rescue work, or full product builds - I work full time on Upwork with overlap for US and European business hours If you need one AI feature, a quick prototype, a stuck MVP fixed, or a full SaaS product built, send me a short description of what you have and what you want it to do. I will reply with the clearest next step, the likely scope, and the first milestone I would recommend. Tech Stack: AI and LLM: OpenAI, Claude, Gemini, LangChain, LangGraph, CrewAI, MCP, function calling, model routing RAG and vector search: RAG pipelines, embeddings, semantic search, pgvector, Pinecone, document AI, OCR AI agents and automation: multi-agent systems, AI copilots, workflow automation, document extraction with review queues AI reliability: evaluation sets, hallucination reduction, human-in-the-loop workflows Voice AI: Vapi, Retell, ElevenLabs, Deepgram, OpenAI Realtime, Twilio Frontend: Next.js, React, TypeScript, Tailwind CSS, React Native Backend: Node.js, Python, FastAPI, REST and GraphQL APIs, WebSockets Databases: PostgreSQL, Supabase, Redis, MongoDB SaaS architecture: multi-tenant, tenant isolation, RBAC, Stripe billing, admin dashboards Cloud and DevOps: AWS, Docker, Vercel, CI/CD, monitoring Security and compliance: OAuth2, JWT, encryption, audit logs, HIPAA-aware builds, KYC/AML flows Integrations: Stripe, Plaid, open banking APIs, QuickBooks, Xero, Twilio, CRMs, ERPs Industries: AI SaaS, AI agents, document AI, RAG, FinTech, open banking, healthcare, B2B SaaS, startup MVPs, construction tech, legal tech, sales and CRM automation, voice AI, recruiting

  • AI Model Integration
  • Artificial Intelligence
  • Full-Stack Development
  • AI App Development
  • SaaS Development
  • AI Agent Development
  • Next.js
  • Python
  • React
  • Node.js
  • TypeScript
  • OpenAI API
  • Large Language Model
  • Retrieval Augmented Generation
  • LangChain
  • API Integration
  • Stripe
  • PostgreSQL
  • Minimum Viable Product
  • AWS Development
Aayush S.

Noida, India

$25/hr
4.8
110 jobs

๐ŸŸข $100K+ Total Earning ๐ŸŸข ๐—œ๐—œ๐—ง๐—ถ๐—ฎ๐—ป ๐ŸŸข ๐—ง๐—ผ๐—ฝ ๐—ฅ๐—ฎ๐˜๐—ฒ๐—ฑ ๐—ฃ๐—น๐˜‚๐˜€ ๐ŸŸข ๐Ÿญ0+ ๐—ฌ๐—ฒ๐—ฎ๐—ฟ ๐ŸŸข Available now to start the project ๐Ÿ”ด Top 1% Talent on Upwork | Top 1% on StackOverflow ๐ŸŸข ๐— ๐—–๐—ฃ, ๐—”๐—œ ๐—”๐—ด๐—ฒ๐—ป๐˜๐˜€, ๐—ฅ๐—”๐—š, ๐—ฉ๐—ผ๐—ถ๐—ฐ๐—ฒ ๐—”๐—ด๐—ฒ๐—ป๐˜๐˜€, ๐—Ÿ๐—ฎ๐—ป๐—ด๐—–๐—ต๐—ฎ๐—ถ๐—ป, ๐—Ÿ๐—ฎ๐—ป๐—ด๐—š๐—ฟ๐—ฎ๐—ฝ๐—ต, ๐—ฃ๐—ฟ๐—ผ๐—บ๐—ฝ๐˜ ๐—˜๐—ป๐—ด๐—ถ๐—ป๐—ฒ๐—ฒ๐—ฟ๐—ถ๐—ป๐—ด, ๐—ฉ๐—ฒ๐—ฐ๐˜๐—ผ๐—ฟ ๐——๐—ฎ๐˜๐—ฎ๐—ฏ๐—ฎ๐˜€๐—ฒ๐˜€, ๐—˜๐—บ๐—ฏ๐—ฒ๐—ฑ๐—ฑ๐—ถ๐—ป๐—ด๐˜€, ๐—™๐˜‚๐—ป๐—ฐ๐˜๐—ถ๐—ผ๐—ป ๐—–๐—ฎ๐—น๐—น๐—ถ๐—ป๐—ด, ๐—ง๐—ผ๐—ผ๐—น ๐—จ๐˜€๐—ฒ, ๐—”๐—ด๐—ฒ๐—ป๐˜๐—ถ๐—ฐ ๐—ช๐—ผ๐—ฟ๐—ธ๐—ณ๐—น๐—ผ๐˜„๐˜€, ๐— ๐˜‚๐—น๐˜๐—ถ-๐—”๐—ด๐—ฒ๐—ป๐˜ ๐—ฆ๐˜†๐˜€๐˜๐—ฒ๐—บ๐˜€, ๐—Ÿ๐—Ÿ๐—  ๐—™๐—ถ๐—ป๐—ฒ-๐—ง๐˜‚๐—ป๐—ถ๐—ป๐—ด, ๐—Ÿ๐—Ÿ๐—  ๐—˜๐˜ƒ๐—ฎ๐—น๐˜€, ๐—š๐—ฒ๐—ป๐—”๐—œ ๐—”๐—ฝ๐—ฝ๐˜€, ๐——๐—ผ๐—ฐ๐˜‚๐—บ๐—ฒ๐—ป๐˜ ๐—”๐—œ, ๐—ž๐—ป๐—ผ๐˜„๐—น๐—ฒ๐—ฑ๐—ด๐—ฒ ๐—•๐—ฎ๐˜€๐—ฒ ๐—”๐—œ, ๐—ฆ๐—ฒ๐—บ๐—ฎ๐—ป๐˜๐—ถ๐—ฐ ๐—ฆ๐—ฒ๐—ฎ๐—ฟ๐—ฐ๐—ต, ๐—›๐˜†๐—ฏ๐—ฟ๐—ถ๐—ฑ ๐—ฆ๐—ฒ๐—ฎ๐—ฟ๐—ฐ๐—ต, ๐—ฅ๐—ฒ๐—ฟ๐—ฎ๐—ป๐—ธ๐—ถ๐—ป๐—ด, ๐—š๐˜‚๐—ฎ๐—ฟ๐—ฑ๐—ฟ๐—ฎ๐—ถ๐—น๐˜€, ๐—”๐—œ ๐—”๐˜‚๐˜๐—ผ๐—บ๐—ฎ๐˜๐—ถ๐—ผ๐—ป โœ… Tech Stack & Expertise โ‡๏ธ Artificial Intelligence & Machine Learning: AI Development, Deep Learning, TensorFlow, PyTorch, Artificial Neural Networks, Generative AI, Data Science, Natural Language Processing, NLP โ‡๏ธ LLM Engineering: OpenAI, ChatGPT API Integration, OpenAI API, LLaMA 3, Mistral, Mixtral, Fine-Tuning using LoRA, QLoRA, DPO, RLHF, PEFT, LLM Prompt Engineering, AI Model Training, Vector Databases like Pinecone, Weaviate, FAISS, RAG pipelines โ‡๏ธ AI Agent Development: AI Chatbots, AI Bots, AI Classifiers, Voice AI, AI Text-to-Speech, AI Speech-to-Text, Bot Development, Deepbrain AI, CrewAI, AutoGen โ‡๏ธ Python Development: Flask, FastAPI, Django, GPT APIs, Pytest, BeautifulSoup, Selenium โ‡๏ธ Data Automation: Web Scraping, Crawling, Data Mining, Parsing, Workflow Automation Bots โ‡๏ธ Fullstack Development: JavaScript, React.js, Node.js, Express.js, MongoDB โ‡๏ธ DevOps & Cloud: Docker, Kubernetes, Ansible, GitLab CI/CD, AWS, Azure, GCP, DigitalOcean โ‡๏ธ API Development & Integration: RESTful APIs, OpenAI Embeddings, Webhooks, Secure Microservices, Stripe, Binance, Telegram, BetFair, OddsJam, Interactive Brokers ๐Ÿ“Œ Services I Offer โš™๏ธ Web Scraping, Data Extraction, Crawling & Mining โš™๏ธ Machine Learning Model Development & AI Implementation โš™๏ธ Deep Learning & AI Model Training Prompt Engineering โš™๏ธ AI App Development: AI Chatbots, AI Bots, AI Agent Development โš™๏ธ Natural Language Processing, AI Classifier & Generative AI Applications โš™๏ธ Financial Dashboard Development, Market Analysis & Automation โš™๏ธ Interactive Brokers / Binance / Telegram Bot Development โš™๏ธ Data Cleaning, Processing, Analysis & Visualization โš™๏ธ AI Text-to-Speech, AI Speech-to-Text, Voice AI Integration โš™๏ธ Workflow Automation, Custom Scripts, and Python-based Optimization ๐Ÿค– LLM & AI Engineering โžœ AI Model Development: Artificial Neural Networks, TensorFlow, PyTorch, Generative AI Apps โžœ LLM Fine-Tuning: Persona bots, Q&A systems, Legal/Medical NLP models using LLaMA 3, Mistral โžœ Synthetic Data Generation & Machine Learning Model Training โžœ LLM Prompt Engineering & Evaluation Pipelines for benchmarking โžœ AI Model Integration with OpenAI API, ChatGPT API, and OpenAI Embeddings โžœ Cloud-based AI Deployment: SkyPilot on AWS, GCP, RunPod โžœ Inference Optimization: vLLM, TGI with quantized models (AWQ, GPTQ, GGUF, GGML) โžœ AI Agent Development with CrewAI, AutoGen, Deepgram, Amazon Polly ๐Ÿ”Œ API Integration Specialist โœ”๏ธ AI Chatbot Integration with ChatGPT API, OpenAI API & Vector Databases โœ”๏ธ Secure RESTful Architecture, OAuth, Token Authentication, Rate Limiting โœ”๏ธ Real-time Data Processing, Webhooks, Cloud Functions โœ”๏ธ Build Scalable Microservices for AI App Development ๐Ÿง  AI Agent & LLM Skillset Voice AI Agents: CrewAI, AutoGen, Deepgram, Amazon Polly LLM Training & Fine-Tuning: PEFT, LoRA, QLoRA, RLHF, DPO Frameworks & Tools: HuggingFace AutoTrain, Axolotl, Unsloth AI Classifiers & NLP: AI Model Training Prompt Engineering, AI Model Development, RAG Pipelines Generative AI Applications: AI Chatbots, AI Bots, AI App Development, Automation Workflows ๐Ÿ’ก Specialized in Python, AI Development, and Automation โ€” I build scalable AI applications, automate workflows, and develop advanced Machine Learning & Deep Learning models with seamless API integration. I successfully deliver WEB SCRAPING, DATA MINING, and AUTOMATION solutions using Python, BeautifulSoup, Selenium, and Playwright, leveraging anti-detect browsers and proxies to bypass restrictions. For data analysis & Data Science projects, I use Pandas, NumPy, Scikit-Learn, and TensorFlow. ๐Ÿ“ˆ If you are looking for an expert in Python + AI/ML Development, Chatbot Development, AI Agent Development, and API Integration who delivers high-quality solutions fast, please invite me. Thanks, Aayush Saini

  • AI Model Integration
  • AI Bot
  • AI Chatbot
  • AI Development
  • AI Agent Development
  • AI Text-to-Image
  • AI Implementation
  • AI Text-to-Speech
  • AI App Development
  • AI Model Development
  • AI Content Creation
  • AI Platform
  • AI Speech-to-Text
  • Python
  • AI Model Training
  • AI-Generated Code
  • AI Security
  • AI Mobile App Development
  • AI Marketplace
  • LLM Prompt
Anders T N.

Cape Town, South Africa

$56/hr
4.8
16 jobs

๐ŸŸ  ๐“๐จ๐ฉ๐‘๐š๐ญ๐ž๐ ๐ŸŸ  ๐Ÿ“ โญ๏ธ ๐‘๐ž๐ฏ๐ข๐ž๐ฐ๐ฌ ๐ŸŸ  ๐Ÿ๐ŸŽ๐ŸŽ+ ๐ฉ๐ซ๐จ๐ฃ๐ž๐œ๐ญ๐ฌ ๐ŸŸ  ๐…๐จ๐ซ ๐Ÿ7+ ๐˜๐ž๐š๐ซ๐ฌ, ๐ˆ ๐‡๐š๐ฏ๐ž ๐ƒ๐ž๐ฏ๐ž๐ฅ๐จ๐ฉ๐ž๐ ๐’๐จ๐ฅ๐ฎ๐ญ๐ข๐จ๐ง๐ฌ ๐“๐ก๐š๐ญ ๐ƒ๐ซ๐ข๐ฏ๐ž ๐‘๐ž๐š๐ฅ ๐๐ฎ๐ฌ๐ข๐ง๐ž๐ฌ๐ฌ ๐‘๐ž๐ฌ๐ฎ๐ฅ๐ญ๐ฌ ๐Ÿ‘‰ ๐‚๐ก๐ž๐œ๐ค My ๐๐จ๐ซ๐ญ๐Ÿ๐จ๐ฅ๐ข๐จ, you won't be disappointed ;) ๐ŸŸข ๐‡๐ž๐ซ๐žโ€™๐ฌ ๐ญ๐ก๐ž ๐๐ž๐š๐ฅ: If youโ€™re looking for just another full stack developer, Iโ€™m not your guy. But if you want a senior full stack developer with 17+ years of experience who understands business goals, AI integration, scalability, & long-term ROI, then youโ€™re in the right place ๐Ÿ“ˆ ๐Œ๐ฒ ๐‚๐ฅ๐ข๐ž๐ง๐ญ๐ฌ ๐’๐ž๐ž ๐‘๐ž๐š๐ฅ Business ๐ˆ๐ฆ๐ฉ๐š๐œ๐ญ โ†’ ๐€๐ฅ๐ž๐š ๐‚๐จ๐ง๐ฌ๐ฎ๐ฅ๐ญ ๐†๐ฆbH โ€œ20% increased efficiency & โ‚ฌ900,000 expanded client capacityโ€ โ†’ ๐Š๐ฅ๐ฎ๐›๐š๐ซ๐จ: โ€œQuick wins & long-term improvements, delivered fastโ€ โ†’ ๐€๐œ๐œ๐’๐ž๐ฅ๐ฅ๐ž๐ซ๐š๐ญ๐ž ๐’๐ง๐ ๐๐ก๐: โ€œClear milestones, strong architecture, & reliable deliveryโ€ ๐Ÿ’ญ ๐ƒ๐จ๐ž๐ฌ ๐“๐ก๐ข๐ฌ ๐’๐จ๐ฎ๐ง๐ ๐‹๐ข๐ค๐ž ๐˜๐จ๐ฎ? ๐Ÿ”นโ€œI need a full stack developer who understands businessโ€ ๐Ÿ”นโ€œI need someone who knows how to do AI integration in my businessโ€ ๐Ÿ”นโ€œI want a React developer who can scale my productโ€ ๐Ÿ”นโ€œI need a WordPress developer who wonโ€™t limit growthโ€ ๐Ÿ”นโ€œI need a mobile app developer who thinks end-to-endโ€ ๐Ÿ”นโ€œI need a Node.js or Python developer who builds for the long termโ€ ๐Ÿค ๐–๐ก๐š๐ญ ๐˜๐จ๐ฎ ๐†๐ž๐ญ ๐–๐ก๐ž๐ง ๐˜๐จ๐ฎ ๐–๐จ๐ซ๐ค ๐–๐ข๐ญ๐ก ๐Œ๐ž โœ… Clear, proactive communication โœ… Ownership mindset โœ… Scalable architecture decisions & AI integration โœ… Clean, maintainable code โœ… Business-driven technical choices โœ… Agile & Scrum delivery ๐–๐ก๐ฒ ๐‚๐ก๐จ๐จ๐ฌ๐ž ๐Œ๐ž ๐š๐ฌ ๐˜๐จ๐ฎ๐ซ Full Stack Developer ๐Ÿ”ธ Full stack developer with business focus: As a senior full stack developer, I design & deliver full stack development across frontend, backend, infrastructure, & AI API integrations. Clients choose me because I donโ€™t just develop features; I develop systems that generate revenue, reduce operational cost and know how to build AI integration ๐Ÿ”ธ React developer, Full stack developer & Web developer all in one Iโ€™ve spent 8+ years building high-performance interfaces as a React developer, delivering modern web platforms as a full stack developer using React , Vue , & Angular when the business case demands it. ๐Ÿ”ธ WordPress developer ( full stack developer ) Unlike typical WordPress developer 's, I architect secure, scalable WordPress solutions that integrate with API s, CRMs, & custom backends. My experience as a WordPress developer allows businesses to grow without hitting technical ceilings ๐Ÿ”ธ Mobile app developer with a full stack developer & AI integration mindset As a mobile app developer, I build mobile applications that integrate seamlessly with backend systems, ensuring performance, security, & long-term maintainability, not isolated apps that break at scale ๐Ÿ”ธ React Developer ๐–๐ก๐จ ๐ƒ๐ž๐ฅ๐ข๐ฏ๐ž๐ซ๐ฌ ๐‘๐ž๐ฌ๐ฎ๐ฅ๐ญ๐ฌ and Ai Machine Learning Iโ€™m a React developer who has built complex dashboards, SaaS platforms, & high-traffic web applications used by thousands of users daily. My experience as a React developer ensures fast load times, clean architecture. Iโ€™ve delivered production-grade solutions using React alongside WordPress backend s, Vue-based micro-frontends, & Angular enterprise modules, always choosing the framework that best fits the business model Clients prefer me as their React developer because I think in systems, not components. โš™๏ธ Node.js Backend Expert As a backend-focused full stack developer, I deliver as a full stack development only event-driven architectures for production systems. My Node.js experience includes: โ†’ High-performance API s โ†’ Real-time systems โ†’ Secure authentication flows โ†’ SaaS platforms integrated with React, Vue, & PHP based systems & AI integration Clients choose me for Node.js development because I design backend s that donโ€™t need to be rewritten when your user base grows. ๐Ÿง  Python Developer ๐Ÿ๐จ๐ซ ๐’๐œ๐š๐ฅ๐ž & ๐ˆ๐ง๐ญ๐ž๐ฅ๐ฅ๐ข๐ ๐ž๐ง๐œ๐ž Iโ€™m a Python developer with deep experience building data-driven platforms, AI automation systems, & scalable API s. As a Python developer, Iโ€™ve worked across industries where performance, reliability, & security are mission-critical. My Python work often integrates with React frontends & JavaScript ecosystems, & Iโ€™ve delivered solutions involving Java based systems & machine learning pipelines when data intelligence is required. Clients trust me as a Python developer because I write production code that scales. โšก ๐–๐ก๐š๐ญ ๐‚๐ฅ๐ข๐ž๐ง๐ญ๐ฌ ๐’๐š๐ฒ ๐Ÿฆธ โ€œAs a full stack developer, Anders delivers exceptional quality.โ€ - Soundus Mohamed, Graphic designer at Value Tree. โญโญโญโญโญ ๐Ÿ“ฃ โ€œEnterprise-level development & communication.โ€ Namit Jindal, CEO of Deliverability Ninja. โญโญโญโญโญ โฑ๏ธ โ€œFast, precise, & reliable.โ€ Justin Weiland, senior finance consultant at Alea Consult GmbH โญโญโญโญโญ Got a full stack development project or AI machine learning ideas? Get in touch & letโ€™s build something that actually moves your business forward. ๐Ÿค

  • Full-Stack Development
  • JavaScript
  • React
  • Node.js
  • Web Development
  • API Integration
  • PHP
  • HTML5
  • Web Application
  • Python
  • Web Design
  • API
  • CSS
  • Ecommerce Website Development
  • Amazon Web Services
  • WordPress
  • Shopify
  • Next.js
  • SaaS Development
  • Front-End Development

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API integration developer hiring guide

API integration developers help software tools share data and work together, enabling seamless data exchange and functionality between systems. This guide covers what they do, typical costs, and how to find and hire the right freelance professional for your project.

What does an API integration developer do?

An API integration developer enables disparate software applications to share data and work together seamlessly. Think of them as a universal translator for your software, helping your CRM talk to your marketing automation tool or your e-commerce platform sync with your inventory system.

By connecting the tools you already use, these technical professionals build the bridges that help automate your business processes and can help eliminate manual data entry and reduce errors.

A developer's day-to-day work often involves:

  • Designing connections. Creating the blueprint for how different platforms will exchange information.

  • Implementing integrations. Building the actual connections that allow your software to communicate.

  • Troubleshooting issues. Finding and fixing problems when data doesnโ€™t transfer correctly or a connection breaks.

  • Maintaining performance. Keeping integrations running efficiently and securely as your business grows.

  • Documenting processes. Creating clear guides so your team can understand and manage its connections in the future.

How to hire an API integration developer on Upwork

Upwork makes it easy to find, vet, and hire API integration developers who match your technical needs and project timeline. To streamline your hiring process, just follow these four simple steps.

1. Post a detailed job description

Your job post serves as the first point of contact with potential candidates. Crafting a job post that clearly expresses your needs helps candidates self-select based on their skills and interest. In your post:

  • Outline which systems you need to connect, such as Salesforce integrations or Mailchimp connections

  • Define the primary goal of the integration, like automating a workflow or syncing customer data

  • List any required technical skills, such as experience with REST APIs or specific authentication methods

  • Give your timeline and budget expectations

To create a tailored job post quickly, try the Job Post Generator powered by Umaโ„ข, Upworkโ€™s Mindful AI. Describe what you need in a few sentences, and Uma will craft a job post in seconds. You can also review job description templates and examples for ideas and inspiration.

2. Review proposals and evaluate technical expertise

Taking a structured approach to reviewing proposals will help you move efficiently from a large applicant pool to a focused shortlist.

  • Have Uma give instant video interviews and side-by-side comparisons

  • Use Upworkโ€™s filters to find candidates by rate, location, and experience

  • Review proposals for signs that the candidate has understood your job post and has the skills to meet your needs

  • Check portfolios for case studies or examples of past work that are relevant to your needs

  • Read reviews from previous clients to gauge a developer's reliability and quality of work

3. Interview your top choices

Quick video interviews give you the chance to ask any questions you have left for your top candidates, and to get a feel for what a collaboration with them might be like.

  • Schedule and conduct interviews within Upwork messaging to get instant transcripts and summaries from Uma

  • Ask the candidates to walk you through past work from their portfolio, focusing on aspects that are similar to your project and challenges they overcame

  • Discuss each candidateโ€™s typical process for approaching an integration project, looking for signs of solid methodology and planning

  • Ask questions designed to showcase the candidateโ€™s technical depth, for example about how they handle rate limits, authentication issues, and errors

To prepare for your conversations, consider reviewing common interview questions for freelancers.

4. Define scope and begin work

Once youโ€™ve found the right person, you can send a contract directly through the Upwork marketplace. A solid contract protects both parties and helps collaborations be successful from beginning to end.

  • Use Upwork's contract workroom, messaging, and payment protection for secure collaboration

  • Choose fixed-price contracts for projects with clear deliverables, such as implementing a single API connection or basic data-sync setup

  • Break large projects into milestones, such as planning, development, implementation, testing, and debugging

  • Choose hourly contracts for ongoing work or projects without clear deliverables, such as performance monitoring, bug fixes, and ongoing optimization

Once the contract has started, be sure to give the integration specialist everything they need to succeed, including the appropriate access and permissions to service accounts, developer sandboxes, and staging and production environments.

How much does it cost to hire an API integration developer?

Independent professionals on Upwork base their rates according to market demand, the scope and complexity of the project, and their own skills and experience. The following chart lists typical costs you might find for hiring an API integration developer for projects often found through Upwork.

Basic integration

$500-$2,000 /project

Entry- to mid-level
  • Single API connection
  • Basic data sync setup
  • Simple authentication implementation

Standard integration

$2,000-$8,000 /project

Mid- to senior-level
  • Multi-step workflow automation
  • Data mapping and transformation
  • Error handling and testing

Complex integration

$8,000+ /project

Senior-level or developer
  • Multi-system enterprise integration
  • Custom middleware development
  • Advanced security protocols

Ongoing maintenance

$1,500-$5,000 /month

Mid- to senior-level
  • Performance monitoring
  • Bug fixes and updates
  • Monthly optimization reports

Strategic consulting

$100-$200 /hour

Expert- or executive-level
  • Integration architecture design
  • Technical roadmap development
  • Team training and enablement

Frequently asked questions

Is hiring an API integration developer worth it?

Yes, hiring an API integration developer can be worth it for businesses looking to automate processes, reduce manual errors, and improve operational efficiency. The investment often leads to significant time and cost savings by streamlining workflows.

What is the difference between an API developer and an API integration developer?

An API developer typically builds and maintains the interface itself through back-end development, while an API integration developer uses existing interfaces to connect separate software systems.

How long does a typical API integration project take?

The timeline for an API integration project can vary based on its complexity, ranging from a few days for a simple connection to several weeks for a more intricate, multi-system integration.