Architecture & modernization
Clarity before code — and a proven path out of legacy.
- System & solution architecture
- Monolith → microservices migration
- Code & architecture reviews
Tech Blog
Notes from the engine room
Deep dives, walkthroughs and lessons learned — with code, diagrams and videos from real production work.
Consulting
Software consultancy that ships
Hands-on help for founders, teams and businesses — turning ideas into resilient, production-grade software, and untangling systems that have grown complex.
Backend build & delivery
Production-grade services, built the way banks demand.
- Java · Spring Boot microservices
- REST APIs & integrations
- Event-driven systems (Kafka, Pub/Sub)
Cloud & operations
Get it live, keep it fast, and keep it running.
- AWS · GCP · Kubernetes · OpenShift
- CI/CD & DevOps automation
- Observability & reliability
Teaching
Learn software engineering with me
Personal, practical coaching from a practising engineer — not recorded lectures. We write real code, build real projects, and grow real skills in Java, Spring, microservices and the cloud.
🎯
1-on-1 mentoring
Private sessions built entirely around you — your goals, your pace, your projects. Ideal for students, career-switchers and junior developers who want focused guidance.
👥
Small-group classes
Learn alongside a handful of peers in interactive, hands-on sessions. Small enough that everyone codes, asks questions and gets individual attention.
🛠️
Project-based learning
We don't stop at theory. You'll design, build and deploy working software — the same way it's done professionally, from Git to the cloud.
Expertise
Where I bring depth
The engineering areas I build with, consult on, and teach — from the shape of a system down to the code that runs it.
Distributed systems
Designing microservices with clean boundaries, resilient communication and independent deployability — without the accidental complexity.
Event-driven architecture
Decoupling systems with Kafka and messaging — idempotent consumers, reliable delivery, and flows that stay fast under load.
Java & Spring
Idiomatic, well-tested services across the Spring ecosystem — Boot, Cloud, Batch, Security — built for clarity and longevity.
Cloud & DevOps
Containerized workloads on AWS, GCP, Kubernetes and OpenShift, with CI/CD pipelines that make releases boring.
APIs & integration
Clear, versioned REST APIs and robust integrations that hold up as systems and teams grow around them.
Reliability & observability
Metrics, logs and tracing that turn incidents into quick fixes — and performance work that keeps systems fast and calm.
About
Engineer by craft, teacher at heart
I'm Gihan Munasinghe — a software engineer who loves the whole arc of building: from the first sketch of an idea, through clean architecture and well-tested code, to the moment real users get value from it.
I care about systems that are simple to reason about, resilient under pressure, and a pleasure to work in — and I care just as much about helping other engineers get there. That's the thread running through my apps, my consulting, and the coaching I offer to individuals and small groups.
If you're building something — or want to learn how — I'd love to hear from you.
Contact
Let's build — or learn — together
Whether you need a consultant on your project, want to enrol in mentoring or a small-group class, or just want to talk software — my inbox is open.