Leul E.

Experienced Backend Developer specializing in scalable microservices with Django, FastAPI, Node.js, and NestJS. I integrate advanced agentic AI into backend systems and manage deployments on AWS, Google Cloud, and Azure. My expertise includes designing CI/CD pipelines and optimizing high-performance databases such as PostgreSQL and MongoDB to ensure system reliability. I transform complex technical requirements into efficient, scalable solutions that support your project's success and future growth. ⚙️ My services include: Real-Time & Game Systems Built WebSocket and grpc powered multiplayer game backends and real-time APIs using event-driven microservices, handling high concurrency with low latency and responsiveness. E-Commerce Backends Implemented core systems for online platforms: catalog services, checkout workflows, inventory syncing, and transactional APIs optimized for scale and uptime. Amazon Ads & SP API Integration Integrated Amazon Selling Partner (SP) APIs and Amazon Ads APIs to power custom ad reporting, campaign automation, and seller analytics dashboards built with performance and compliance in mind. Secure Payment & Transaction Systems Developed payment processing flows with MPGS, Visa, and other gateways, featuring encrypted data handling, validation layers, and detailed transaction logging. AWS & Cloud Infrastructure Deployed and managed services on AWS using EC2, ECS, Lambda, S3, and RDS, with Terraform and Docker for infrastructure-as-code and containerized microservices. CI/CD & DevOps Automation Built CI/CD pipelines with GitLab CI, GitHub Actions, and Drone to automate testing, deployment, and delivery workflows. Monitoring & Observability Set up metrics, logs, and tracing across distributed systems using Prometheus, Grafana, Loki, ELK Stack, and Jaeger, ensuring real-time visibility and stability. My specialties include: ✅ Programming Languages: Python (3+), C#, Java, JavaScript (ES6+), TypeScript ✅ Backend Development: Node.js, Django, FastAPI, .NET, Nest.js ✅ Frontend Development: React, Angular, Next.js, Vue.js, HTML, CSS ✅ Database Management: MySQL, PostgreSQL, MongoDB ✅ AI & Agent Development: LangChain, LangGraph, LLM integration, RAG pipelines, Vector Databases I have hands-on experience designing and implementing AI agent systems, including multi-agent workflows, retrieval-augmented generation (RAG), and context-aware applications using vector databases. I focus on building reliable, production-ready systems that combine traditional software engineering with modern AI capabilities. I have a experience of delivering high-quality solutions, ensuring projects are not only completed successfully but are scalable, maintainable, and aligned with business needs. I’m committed to continuous learning and staying current with emerging technologies, especially in AI and distributed systems. Let’s work together to bring your ideas to life; whether it's a web application, a scalable API, or an AI-powered solution with intelligent agents.