Hire the Best Amazon Aurora Developers

🚀 Helping Amazon & Ecommerce Brands Scale Through Automation & System Design 🚀 I work with established Amazon sellers, DTC brands, and agencies who’ve outgrown manual processes, fragile spreadsheets, and disconnected tools. My role isn’t just to “integrate an API” — it’s to design reliable systems that reduce operating costs, eliminate data blind spots, and support scale without chaos. What I Do Amazon Systems & Automation Design and implement productiongrade solutions using Amazon SPAPI for orders, inventory, settlements, reimbursements, and financial reconciliation Migrate legacy MWS workflows to modern, scalable SPAPI architectures Handle throttling, retries, rate limits, and longrunning pipelines correctly Advertising & Growth Data Integrate Amazon Ads API and Marketing Stream Unify PPC, sales, and financial data into a single source of truth Enable ROIdriven decision making, not vanity dashboards Omnichannel & BackOffice Integration Connect Amazon with Shopify, WooCommerce, ERPs, accounting tools, and BI systems Replace manual exports and reconciliations with automated, auditable workflows Problems I Help You Solve Fragmented systems that don’t talk to each other High operating costs caused by manual processes Inconsistent or unreliable Amazon data “Black box” integrations no one fully understands Scaling pain once you pass 6–7 figures in revenue I design systems that keep working as volume, regions, and complexity increase. How I Work Architecture first — process clarity before code Profitfocused — every automation must justify itself Productionready — logging, monitoring, retries, and failure handling included Collaborative — clear communication with founders, ops teams, and devs As a PII approved Amazon developer, I operate with enterpriselevel security and compliance from day one. Technical Scope Backend: Python, PHP (Laravel), Java (Spring Boot), Node.js, C Data: MySQL, Postgres, DynamoDB, Redshift, MongoDB, Redis Infrastructure: AWS, Docker, CI/CD (GitHub Actions, Jenkins) Integrations: Amazon SPAPI & Ads, Shopify, WooCommerce, Walmart, eBay, QuickBooks Tools are interchangeable — correct architecture is not. Client Feedback “Leo balances deep Amazon SPAPI expertise with real business understanding. Communication was clear, delivery was solid, and the system held up even as scope grew.” “Leopoldo provided expert guidance on SPAPI, answered complex questions clearly, and helped us move forward with confidence. Fivestar experience. ⏳ If You’re Scaling and Need Systems That Won’t Break — Let’s Talk ⏳ Whether you need a full architecture, a migration, or a second opinion, I can help you move forward with clarity and confidence.

Ex-Walmart Global Tech Engineer (Fortune #1 company). 4+ years building SaaS platforms, cloud-native applications, AI-powered systems, workflow automation, and production-grade APIs. Java | Spring Boot | Node.js | Python | PHP | Laravel | React | AWS | Docker | Kafka | Camunda At Walmart Global Tech, I built scalable backend systems, microservices, APIs, real-time data platforms, and cloud-native solutions supporting enterprise-scale operations. I'm a Full Stack, Backend & DevOps Engineer with experience delivering enterprise software, SaaS products, workflow automation systems, AI-powered applications, marketplace platforms, and cloud-native solutions for both enterprise and startup environments. Recently, I've built SaaS platforms, AI-powered automation systems, enterprise dashboards, cloud-native applications, workflow orchestration solutions, marketplace platforms, and document-processing systems. 🚀 Backend Development ⭐ Java & Spring Boot ⭐ Node.js & Express.js ⭐ Python, FastAPI & Django ⭐ PHP & Laravel ⭐ REST APIs & Microservices Architecture ⭐ OpenAPI / Swagger Documentation ⭐ Apache Kafka & Event-Driven Systems ⭐ Camunda BPM & Workflow Automation ⭐ Apache Airflow ⭐ Third-Party API Integrations ⭐ System Design & Scalability 🎨 Frontend Development ⭐ React.js ⭐ Next.js ⭐ JavaScript ⭐ TypeScript ⭐ HTML5 & CSS3 ☁️ Cloud & DevOps ⭐ AWS Cloud Infrastructure ⭐ Docker & Containerization ⭐ Kubernetes ⭐ Jenkins ⭐ GitHub Actions ⭐ GitLab CI/CD ⭐ Infrastructure Automation ⭐ Deployment Automation ⭐ Linux Administration ⭐ Monitoring & Production Support ⭐ DevOps & Release Engineering 🗄️ Databases & Data Technologies ⭐ PostgreSQL ⭐ MySQL ⭐ MongoDB ⭐ Redis ⭐ SQL Server ⭐ Oracle Database ⭐ Elasticsearch 🤖 AI & Automation ⭐ OpenAI APIs ⭐ AI Integrations ⭐ Workflow Automation ⭐ AI-Assisted Development (Cursor, Claude, ChatGPT, GitHub Copilot) 🏆 Recent Project Highlights ✔ AI-Powered Workflow Automation Platform ✔ Scalable SaaS Management Platform ✔ Real Estate Marketplace Platform ✔ Enterprise Laravel & PHP Applications ✔ Django-Based Backend Services & Automation Tools ✔ Real-Time Analytics & Dashboard Systems ✔ Enterprise API & Microservices Platforms ✔ Cloud-Native Backend Infrastructure ✔ DevOps Automation & CI/CD Platforms ✔ Document Processing & Import Automation Systems ✔ WiCAN / OBD Diagnostic Platform Development Why Clients Work With Me ⭐ Ex-Walmart Global Tech Engineer ⭐ Strong Full Stack, Backend & DevOps Expertise ⭐ Fast Execution & Ownership Mindset ⭐ Clean, Scalable & Maintainable Code ⭐ Production-Grade Cloud Infrastructure Experience ⭐ Strong Debugging & Root Cause Analysis Skills ⭐ Enterprise + Startup Experience ⭐ End-to-End Product Delivery Whether you need a scalable backend, a full-stack SaaS application, cloud infrastructure, DevOps automation, workflow orchestration with Camunda, AI integration, marketplace platform, enterprise dashboard, or a complex system integration, I can help turn requirements into reliable, production-ready solutions.

Amazon brands often struggle with two major problems: • PPC campaigns that waste ad spend • Manual processes that slow down growth I help solve both by combining Amazon PPC expertise with backend automation and API systems. I build scalable Amazon advertising and automation solutions using Amazon SP-API, Amazon Ads API, Node.js, Python, and n8n helping brands improve performance, automate operations, and scale efficiently. Whether you need better TACOS, automated reporting, campaign optimization, or custom Amazon integrations, I focus on systems that increase profitability and reduce manual work. 🚀 Services I Offer ✅ Amazon PPC Management & Optimization • Sponsored Products, Sponsored Brands & Sponsored Display • Campaign setup, restructuring & scaling • Keyword research & bid optimization • Negative keyword management • ACOS / TACOS optimization • PPC performance analysis & reporting • Product launch and ranking strategies ✅ Amazon API Development (High-Value Skill) Specialized Amazon API development for sellers, agencies, and software systems. • Amazon SP-API integrations • Amazon Ads API integrations • Automated campaign reporting systems • Product, order & inventory automation • Seller Central automation workflows • Vendor Central integrations • Real-time Amazon data synchronization • Custom dashboards & reporting tools ✅ Amazon Automation & Backend Systems I build automation systems that eliminate repetitive manual work. • n8n workflow automation • Webhooks & real-time sync systems • Automated PPC reporting • Performance monitoring dashboards • Data pipelines & scheduled processes • API integrations with third-party platforms • Scalable backend architecture 📈 What Clients Get ✔ Reduced wasted ad spend ✔ Improved campaign profitability ✔ Automated PPC reporting systems ✔ Real-time operational visibility ✔ Faster workflows with less manual work ✔ Scalable infrastructure for Amazon growth 🧠 My Approach Most freelancers either understand Amazon PPC or backend systems. I specialize in both. That means I can not only optimize campaigns but also build the automation and infrastructure behind them. I focus on: → Data-driven PPC optimization → Automation-first workflows → API-powered systems → Scalable backend architecture → Long-term profitability and efficiency 🛠 Tech Stack Amazon SP-API Amazon Ads API Amazon Seller Central n8n REST APIs Webhooks Node.js Python MySQL 💼 Why Clients Work With Me ✔ Strong combination of Amazon PPC + API expertise ✔ Technical automation skills most PPC freelancers lack ✔ Clean and scalable system design ✔ ROI-focused optimization approach ✔ Reliable communication and fast execution 🔍 Keywords Amazon PPC Expert, Amazon Ads API, Amazon SP-API Developer, Amazon Seller Central Expert, Amazon Advertising, Amazon Automation, Amazon PPC Management, Amazon Campaign Optimization, Amazon API Integration, Amazon Reporting Automation, Amazon FBA PPC, Amazon Backend Automation, Amazon Data Pipelines, Amazon Webhooks, n8n Automation, Node.js Developer, Python Developer, Amazon Inventory Automation, Amazon Order Automation, TACOS Optimization, ACOS Reduction, Amazon Advertising API Expert 📩 Let’s Connect If you’re looking for someone who understands both Amazon advertising and technical automation systems, let’s discuss how I can help scale your Amazon business efficiently.

I’ve built 70+ custom Amazon seller tools (including sellerbot, seller-shark, sellerfuse, sellerwiz) over 7+ years — from real-time analytics dashboards and automated repricing engines to PPC campaign managers and Keepa-powered product research platforms. I specialize in Amazon SP-API, Advertising API, and Keepa API integration, helping Amazon sellers, agencies, and SaaS startups turn complex marketplace data into automated, scalable software. What I build: • Custom Amazon Seller Dashboards((including sellerbot, seller-shark, sellerfuse, sellerwiz) — profit tracking, inventory monitoring, sales analytics with real-time SP-API data • FBA/FBM Automation — repricing engines, inventory alerts, order management, multi-channel sync • Amazon PPC Tools — Ads API integration, keyword automation, bid optimization, campaign performance tracking • Keepa API Integration — price history tracking, sales rank analysis, deal alerts, historical data dashboards • Multi-tenant SaaS Platforms — white-label Amazon tools for agencies, Chrome extensions, and MWS-to-SP-API migrations My stack: PHP (Laravel), Python (FastAPI/Flask), Node.js on the backend. React and JavaScript on the frontend. MySQL, PostgreSQL, and MongoDB for data. AWS (Lambda, S3, RDS, EC2) for cloud infrastructure. I’ve integrated 100+ APIs across e-commerce, payment, shipping, and CRM platforms. Recent project highlights: • Built a reporting Dashboard handling 50K+ SKUs with real-time SP-API data sync • Developed a Keepa-powered product research platform used by 200+ Amazon sellers • Reduced manual reporting time by 80% with automated SP-API dashboards for Amazon sellers Whether you need a complete SaaS platform, a single API integration, or a full MWS-to-SP-API migration, message me with your requirements and I’ll respond within a few hours with a clear plan and timeline.

🥇 Top 3% AWS Expert on Upwork | AWS Advanced Tier Partner | Certified Solutions Architect I help startups and enterprises design secure, scalable and cost-optimized cloud infrastructure on AWS. Over the last 10+ years, I have successfully delivered: ✅ AWS Cloud Architecture Design ✅ AWS → Datacenter / Multi-Cloud Migration ✅ DevOps Automation (Terraform, CI/CD, Docker, Kubernetes) ✅ AWS Cost Optimization (25%–40% Savings Achieved) ✅ Serverless & AI/ML Platform Deployment ✅ Secure Infrastructure & Compliance Setup ✅ SaaS Infrastructure Scaling I have worked on large-scale telecom, SaaS, e-learning and fintech platforms, handling production workloads with millions of users. ⭐ What I Can Help You With ☁️ Cloud Architecture & Migration AWS Landing Zone Setup 3-Tier Secure Architecture Design Data Center Migration Strategy Cloud Modernization & Re-architecture High Availability & Disaster Recovery ⚙️ DevOps & Automation Terraform Infrastructure as Code CI/CD Pipelines (GitHub Actions / Jenkins / AWS CodePipeline) Docker & Kubernetes (EKS / ECS Fargate) Monitoring & Observability Setup 💰 AWS Cost Optimization Specialist Rightsizing & Reserved Instance Planning Storage & CDN Optimization Cloud Billing Analysis FinOps Implementation 🤖 Serverless & AI Cloud Deployment AWS Lambda, API Gateway, DynamoDB Event-Driven Architectures AWS Bedrock / SageMaker AI Deployment Real-time Analytics Pipelines 🔐 Security & Compliance IAM Hardening & Access Strategy Private Networking (VPC, VPN, Bastion) WAF, Shield, KMS Implementation Production Security Audits 🧠 AWS Technologies Expertise EC2 | S3 | RDS | Aurora | Lambda | API Gateway | ECS | EKS | CloudFront | VPC | Route53 | DynamoDB | Redshift | Glue | Kinesis | SageMaker | CloudWatch | CloudTrail | IAM | WAF | Shield | Terraform | Docker | Kubernetes 📈 Proven Results ✔ Reduced AWS cost by 35% for telecom infrastructure migration ✔ Optimized video platform infra saving $7K/month CDN + storage cost ✔ Migrated 20+ production workloads with zero downtime ✔ Designed secure AI cloud architecture for enterprise deployments 🤝 Why Clients Hire Me ⭐ AWS Partner Level Expertise ⭐ Strong Business + Technical Understanding ⭐ Security-First Architecture Approach ⭐ Clear Communication & Documentation ⭐ Long-term Support & Reliability 📩 Let’s discuss your AWS architecture, migration or cost optimization goals. I can provide a quick audit + architecture recommendation call.

I am a certified AWS Developer with over 10 years of working experience with AWS Cloud, who specializes in server-less architectures such as ETL processes, serverless APIs, serverless websites. ETL processes: - various compute environments: from EMR, via Glue, Batch, to Lambda with focus to be config driven and as serverless as possible. - custom orchestration systems with Step Functions, Scheduled Events, On-demand, queueing and post processing - Python, PySpark, NodeJS (with Typescript) APIs: - as serverless as possible to reduce cost and development time, with ability to deploy whole API service as single Lambda function (NestJS, FastifyJS, ExpresJS, FastAPI, Flask) - Python, NodeJS (with Typescript) Serverless websites: - as serverless as possible for reports about system status, small intake forms, management tools, etc. - build whole websites with static generated content, server site rendering (NuxtJS), - Python, NodeJS (with Typescript) I prefer to use Serverless Framework as IaaC (infrastructure as a code) for deployment with a connection with GitHub Actions as a pipeline. Also, I have experience with and I am open to use other deployment tools such as: AWS CDK, SAM, Terraform, etc. I also have experience designing DynamoDB tables (one table design principle) and connecting them with Lambdas as data producers, and creating DynamoDB Streams with Lambdas as event processors (which could've been useful in your project). Let's talk about your project needs and use my 10 years of working experience with AWS. Tomasz