public sealed record Engineer
{
public string Name => "Yasir Oladimeji";
public string Role => "Full Stack Software Engineer";
public string Base => "Lagos, Nigeria 🇳🇬 (remote ready, any timezone)";
public string[] Domains => ["Fintech", "E commerce", "AI / LLMs", "Healthtech", "SaaS"];
public string[] Thinks => ["Clean Architecture", "DDD", "CQRS", "Event driven systems"];
public string Policy => "If it's solvable, I'll solve it. If it's shippable, I'll ship it.";
}I build production systems that move money, serve customers and talk to AI: wallet ledgers processing 10,000+ daily transactions, e commerce platforms with 25+ APIs, and LLM powered backends that win hackathons.
I work across the whole stack. Backend architecture, frontend, infrastructure, data, integrations, automation. Hand me a problem with a solution in it, and I'll find that solution and ship it.
| Step | What it means |
|---|---|
| 1. Understand | Profile the system, trace the request, read the query plan, find the real problem before touching code |
| 2. Design | Pick the right tool for the job: CQRS, caching, events, or just a well placed index |
| 3. Build | Clean, tested, containerised code with xUnit, Docker, CI/CD and zero downtime deploys |
| 4. Observe | Serilog tracing, metrics and alerts, then iterate until it's fast and stable |
No task is "not my stack". If it's solvable, here's what I'll do with it:
| You need… | I'll deliver… |
|---|---|
| 💸 Payments, wallets, ledgers | Idempotent, auditable money flows that survive retries, replays and broker restarts |
| ⚡ A slow API | Measurable speedups. I've cut p95 latency by 45% with indexing and query plan work |
| 🧱 A monolith that's hurting | A clean split into a modular monolith or microservices, with Kafka or RabbitMQ in between |
| 🤖 AI in your product | Resilient LLM integrations with retries, backoff and circuit breakers |
| 🔐 Auth that holds up | JWT, OAuth2, RBAC, secure cookies, layered middleware |
| 🕰️ Legacy code | Safe migrations. I took 5+ client projects from .NET 6 to .NET 8 with zero downtime |
| 🖥️ A polished UI | React, Next.js and Tailwind front ends wired cleanly to the APIs behind them |
| 🔁 Boring manual work | Automation: background services, schedulers, WhatsApp and email bots |
| 10,000+ | 45% | ~60% | 40% | 30% | 🥇 + 🥉 |
|---|---|---|---|---|---|
| daily transactions on a Kafka backed ledger | faster p95 API responses | less DB read load with Redis | fewer LLM endpoint errors | fewer production incidents | hackathon podiums |
|
Wallet creation, KYC, balances and transaction history across 15+ endpoints. Ledger extracted into its own microservice, with idempotent Kafka consumers that guarantee no double credit or double debit, even under network failure.
|
Modular monolith over Commerce, Identity and Logistics with 25+ REST APIs, ACID transactions and architecture fitness tests. Redis TTL caching cut DB round trips by ~60% at peak.
|
|
Two stage AI allocation engine (Housing Vulnerability Index + spatial optimisation) that processes 3,000+ applications in 0.34s, a 16× lift in bed assignments for the lowest income students.
|
LLM powered healthcare backend unifying symptom analysis, voice to diagnosis, OCR and obstacle detection behind 10+ documented endpoints.
|
|
Versioned (v1/v2) API with CQRS + MediatR splitting reads from writes, fine grained RBAC, Unit of Work, xUnit coverage, Docker Compose and Serilog tracing.
|
GroqAI LLM integration for Telex with retry, exponential backoff and circuit breakers, cutting the error rate by 40% under high concurrency.
|
More builds: MediVoice (healthcare language bridge) · Paystack × ASP.NET Core (end to end payment integration)
$ git log --oneline --graph yasir/career
* 2026 (HEAD -> main) Software Engineer @ Whitteintel Limited · CQRS, RBAC, xUnit, Docker, Serilog
* 2025 Full Stack Engineer @ Codefactory Innovative Hub · WaaS, Kafka ledger, GrowthGIA, 45% faster p95
* 2025 .NET Backend Developer @ Teknikforce (Delhi, IN) · .NET 6 to 8 across 5+ client projects
* 2024 Backend Intern @ HNG Tech · GroqAI × Telex, Finalist
* ---- (root) Doctor of Pharmacy @ University of Lagos · where the problem solving started
Languages & Runtimes
Backend Frameworks
Frontend
Messaging · Caching · Data
Cloud · DevOps · Tooling
Now Learning
SQL Server EF Core LINQ MediatR Serilog xUnit Swagger/OpenAPI JWT OAuth2 RBAC Twilio GroqAI YarnGPT
Patterns I reach for: Clean Architecture · DDD · CQRS · Vertical Slice · Repository + Unit of Work · SOLID · API Versioning · Idempotency · Circuit Breakers
- 🧴 Building: engineering at a health tech startup on a mission to put your skin first, making expert skincare smarter, more personal and easier to reach. More to share soon.
- 📚 Learning: Java, system design, Azure, and the deeper corners of the .NET ecosystem
- ☕ Focus: my frontend game is sharpened, so the spotlight is now on Java and the JVM
- 🤝 Open to: full stack work. Frontend, backend, or the whole thing end to end
⚡ Fun fact: I read query plans for fun. On purpose. Voluntarily.