Senior Full-Stack Engineer | 7+ Years of Experience

Building scalable, high-performance systems with modern technologies and best practices.

Seasoned Full-Stack Engineer with over 7 years of professional experience architecting and delivering robust, production-grade applications. Specialized in building distributed systems, microservices architectures, and high-performance backend solutions. Passionate about infrastructure automation, system design, and writing clean, maintainable code.

Currently focused on developing scalable solutions using modern backend and frontend technologies, with a strong emphasis on developer experience, performance optimization, and system reliability.

• Backend Development: RESTful APIs, GraphQL, Microservices Architecture
• System Design: Distributed Systems, Event-Driven Architecture, Message Queues
• DevOps & Infrastructure: Docker, Kubernetes, CI/CD Pipelines, Infrastructure as Code
• Database Design: Schema Design, Query Optimization, Caching Strategies
• Performance: Load Balancing, Horizontal Scaling, Performance Tuning
• Best Practices: TDD, Clean Architecture, SOLID Principles, Code Review

Open to collaborating on interesting open-source projects, particularly in the areas of:

• Backend infrastructure and tooling
• Developer productivity tools
• System design and distributed computing
• Cloud-native applications

• Architected and operated microservices handling millions of requests daily (Go, NestJS, Express)
• Delivered REST/GraphQL APIs with typed contracts plus tracing, metrics, and alerting baked in
• Built event-driven pipelines with queues/pub/sub to decouple services and improve resilience
• Implemented realtime channels via WebSockets and Server-Sent Events for low-latency UX

• Containerized workloads with Docker and orchestrated on Kubernetes across AWS, GCP, and Azure
• Built CI/CD pipelines that cut deployment cycles by ~75% through automated testing and gated releases
• Tuned databases and caching (PostgreSQL, Redis) to shrink hot query latency and offload read traffic
• Added rollout/rollback safety nets and monitoring for predictable releases

• Led monolith-to-microservices migrations with clear domain boundaries and SLOs
• Optimized critical queries and caches for ~60% performance gains on hot paths
• Scaled horizontally under high traffic with load balancing, capacity planning, and autoscaling
• Designed fault-tolerant systems with health checks, circuit breaking, monitoring, and alerting

• Set code review standards and engineering practices to keep quality high
• Mentored engineers on system design, clean architecture, and observability-first development
• Championed TDD and automated quality gates to raise coverage and reliability
• Coordinated across product and design to deliver complex technical solutions on schedule

Feel free to reach out for collaboration opportunities, technical discussions, or consulting inquiries.

Email: Available upon request Twitter: @Ultimate_Nasa LinkedIn: Kalu Chinasa Agu