Portfolio · 2026
Mihajasoa Alain
Backend Developer · Software Engineer
Building APIs since 2023
I do backend development. Mostly in Go and Typescript. Mostly code that you don't need to read three times to understand.
3+years xp
Antananarivo, MG
Currently focused on event-driven architectures
01
About
I build backend systems someone else can still read a year later. Boring is a feature.
I've worked across startup and SaaS backends. OAuth2 flows, multi-tenant data models, third-party integrations, both Postgres and Mongo. Most of the hard calls happen in the data model. Get that right and the rest is mostly typing.
APIs in production
multi-tenant, billing, e-learning
Go · Node · TS
primary stack
Readable by default
small units, explicit edges
How I work
I build for the engineer who will inherit this codebase next year.
Small units. Explicit boundaries. Code that doesn't need a tour guide six months later.
01
The hard decisions live in the data model.
On the Enaro e-learning platform, most of the design time went into the Postgres schema — the features on top were the easy part.
02
Small enough to test beats clever.
At Fihary Soft, the useful work was breaking legacy modules into pieces small enough to test — that is what unblocked releases.
03
Boring technology wins.
The auth service is Go, Postgres and Docker. Nothing exotic — which is exactly why you can self-host it in one command.
05
Skills
Languages & Runtimes
TypeScriptNode.jsGoJavaKotlin
APIs & Frameworks
Express.jsNest.jsSpring BootREST APIsNextjsGin
Databases & Infrastructure
PostgreSQLMongoDBRedisDocker
System Design & Tools
MicroservicesSystem ArchitectureMessage QueuesGitCI/CD
02
Projects
Auth service in Go over gRPC. Token issuance, OAuth2, account store on Postgres. Comes packaged in Docker so you can self-host it.
GogRPCPostgreSQLOAuth2Docker
Real-time chat built around privacy. Anonymous sessions, messages that disappear, a Redis transport that keeps nothing it doesn't have to.
TypeScriptNext.jsElysiaRedis
Small Go CLI. You point it at a folder, you give it rules, it sorts files for you. No daemon, no GUI, just the binary.
GoCLIFilesystem
E-learning platform for teachers and students. Authoring on one side, content delivery and progress tracking on the other. Spring Boot on the backend, Next.js on the front.
Node.jsTypeScriptNext.jsSpring BootPostgreSQL
03
Writing
Notes from building backends — the reasoning behind the code, not just the code.
Building REST APIs with Go
April 20, 2026 · 1 min readA pragmatic look at designing robust and scalable REST APIs in Go using the standard library and a thin router.
GoAPIREST
Microservices Architecture Patterns
March 28, 2026 · 1 min readThe handful of patterns that show up again and again when you build distributed systems — and when to reach for each.
ArchitectureMicroservicesDesign
Database Query Optimization
February 14, 2026 · 1 min readPractical techniques for finding and fixing slow queries — indexes, EXPLAIN plans, and the N+1 trap.
DatabasePerformanceSQL
04
Experience
Backend Developer
Bifora Consulting (Remote)
I work on a multi-tenant SaaS platform. I intervene on the backend architecture, data modeling, and ensure full responsibility for REST APIs, from design to production, while optimizing performance to reduce latency on critical paths when it comes to efficiency.
NestJSNode.jsTypeScriptMongoDBMobile & Backend Developer
Fihary Soft
Shipped features across both the mobile apps and the backend behind them. Spent a fair amount of time breaking up legacy modules into pieces small enough to test, and unblocking the release flow.
NestJSTypeScriptKotlinFull Stack Developer
Mesupres
I have participated in several internal and external projects, intervening in particular during the design and implementation phases, such as the setup of a payment platform.
Next.jsSpring BootPostgreSQLREST APIFull Stack Developer
In_IT
Built end-to-end web products with Next.js on the front and Spring Boot on the back. Worked across feature design, REST APIs, data modeling and the day-to-day plumbing of getting features in front of users.
Next.jsSpring BootTypeScriptPostgreSQL
06
Education & Certifications
Master’s Degree in Software Engineering and Databases
National School of Computer Science of Fianarantsoa (ENI)
Advanced studies in software architecture, backend systems, database design, and distributed applications.
Bachelor’s Degree in Computer Science
National School of Computer Science of Fianarantsoa (ENI)
Focused on software development, databases, algorithms, and web technologies.