Principal Full-Stack Engineer
Production systems that stay alive when it matters most — compliant, fast, and relentlessly reliable. Built under Lagos constraints. Deployed to global standards.
Available for Staff+ impact
UTC+1
Staff+ Engineer
Ships financial, AI, and cinematic systems built to hold under Lagos constraints — with delivery you can measure.
Lagos · UTC+1 · Next.js 15 · Node · Java · ML Infra
4-hour tax filings compressed to 15 minutes. 99.9%+ uptime under ensemble ML inference. AI agents that improve themselves between runs. All of it shipped from Lagos. All of it running in production.
4 hours of Nigerian SME tax filing compressed to 15 minutes — NRS-integrated, audit-ready, zero data-loss.
Constraint: NRS API rate limits: 30 req/min per TIN. BullMQ queue must manage burst filing windows without client-visible failure.
Full tax compliance workflow automation for Nigerian small businesses — VAT, withholding tax, and annual returns. PostgreSQL RLS isolates each tenant at the database level. Real-time calculations under <150ms at load. Idempotent BullMQ job queue ensures no submission is ever double-processed — even through mid-request server failure. Hash-chained immutable audit trail. 95% test coverage.
99.9%+ uptime. 45% MTTD improvement. Ensemble ML that alerts before users notice.
Self-improving multi-agent operator platform — autonomous evolution layer, live fleet dashboard, production-grade reliability under resource constraints.
ZK proofs for document integrity verification — confidentiality and verifiability as simultaneous properties, not a tradeoff.
Abuja HQ · Federal-scale education data for 40 million Nigerian students across 36 states — probabilistic deduplication, per-state retry semantics, ministry-grade reporting.
Proof. Show real systems, metrics, and architecture decisions. Compress energy into a more structured evidence field.
Three live platforms. One federal engagement. Every metric traceable to a deployed codebase.
COMPLIANCE PLATFORM · FINTECH
Tax filing compressed. Zero data-loss record.
BullMQ absorbs NRS API rate limits (30 req/min per TIN) without client-visible failure. PostgreSQL RLS isolates each tenant at the database engine level — not the application layer. Immutable hash-chained audit trail. 95% test coverage.
Chosen: RLS at engine level, not application-layer filtering — NRS audit scrutiny demands proof that tenant data cannot cross-contaminate.
ML PLATFORM · OBSERVABILITY
Ensemble ML. Engineers alerted before users notice.
XGBoost, LightGBM, and CatBoost inference with real-time model quality monitoring. ~30% inference latency reduction via Redis caching. 45% MTTD improvement over reactive alerting baseline. Prometheus 90-day proof window.
Chosen: FastAPI + Redis Pub/Sub — sub-50ms event fan-out at sustained load, impossible with synchronous polling under concurrent sessions.
AI AGENT PLATFORM · ORCHESTRATION
Self-improving fleet. Checkpoint recovery.
Triadic LLM routing under 8GB RAM — Phi-4-mini for task routing, DeepSeek-R1 for multi-step reasoning, Qwen2.5-Coder for generation. Agents evolve their own task strategies between runs. Failed sub-tasks restart from last consistent checkpoint, not from scratch.
Chosen: Autonomous evolution layer over static agent configs — manual tuning cannot adapt to novel inputs at scale.
FEDERAL INFRASTRUCTURE · DATA
40M Nigerian students. <2% deduplication error.
Batch ingestion for the Universal Basic Education Commission across all 36 Nigerian states. Probabilistic record linkage (dedupe.io + PostgreSQL) where exact-match alone misses 15–20% of true duplicates. Per-state DAG tasks — one late submission does not block reporting for the other 35.
Chosen: Probabilistic deduplication over exact-match — state submissions use inconsistent school name spellings across ministries.
Credibility. Convert proof into third-party validation. Ease off the density and let trust breathe.
Four production-hardened packages from the fintech trenches — each solving a gap that general-purpose libraries don’t address. Install in minutes.
Four packages extracted from production TaxBridge and SabiScore — solved for real, then published.
Node.js · PostgreSQL
Production-gradeRow-Level Security at the engine — not the app. Even when application bugs exist, one tenant's records are mathematically invisible to another. Production-deployed in TaxBridge, where a single data-leak event means regulatory audit.
Fintech · Compliance
NRS · GDPRRetroactive tampering becomes mathematically detectable. Every log entry is cryptographically bound to the previous — any edit breaks the chain instantly. Built for NRS and GDPR trails where proof of integrity is non-negotiable.
AI · DevOps
AI-poweredIncident triage in minutes, not hours. Streams live system logs and traces to an AI model, returning a ranked plain-English list of likely root causes — with full context, not just stack traces.
AI · Agent Orchestration
Zero cloudTriadic model routing extracted from SwarmXQ. Routes tasks to the right local GGUF model — Phi-4-mini for classification, DeepSeek-R1 for reasoning, Qwen2.5-Coder for code — with fallback chains and zero cloud egress.
All packages are publicly auditable on GitHub
Craft. Show inspectable engineering output. Shift from outcomes to observable habits.
62 tools deployed under NRS audit pressure (Nigeria's federal tax compliance mandate), 99.9%+ uptime targets, and multi-tenant isolation constraints. Every skill maps to a decision made in production — not a tutorial, not a certification exercise, not a side project.
4h → 15min
tax filing time
TaxBridge · Fastify 5 · PostgreSQL 15 RLS
99.9%+
sustained uptime
SabiScore · XGBoost · LightGBM · Prometheus
Self-improving
AI agent fleet
SwarmXQ · Ollama GGUF · Checkpoint Recovery
Core production stack
Default view is intentionally curated for fast trust. Open the full explorer only when you want deep implementation coverage across all 62 tools.
+6 more in the full explorer below.
Production system × skill lineage
Full explorer · 62 tools · 8 pillars
Expanded layer for CTO and engineer-level scrutiny. Optional by design to preserve reading momentum for recruiters and founders.
Range. Reveal breadth after depth is established. Expand into a matrix-like systems view.
Built the digital learning infrastructure for 40 million Nigerian students at UBEC (Abuja HQ). Then shipped three production systems from Lagos that hold at 2am.
The UBEC work meant no staging mirror, no padded support layer, and no room for vague ownership at federal scale. That operating constraint carried into every system after it. First-principles thinking, explicit failure modes, architecture decisions written so the next engineer can read the reasoning long after deploy.
TaxBridge: React Native / Expo 54 mobile app, Fastify 5 API, PostgreSQL 15 RLS for tenant isolation. SabiScore: ensemble ML inference (XGBoost, LightGBM, CatBoost) behind a Next.js 15 dashboard — 99.9%+ uptime across a 90-day Prometheus window. SwarmXQ: self-improving AI agent fleet with live ops visibility.
Fifteen-plus upstream contributions merged, four cloud certifications, and public code that outlives any single job title. Constraint is the credential. The work is the record.
Constraint Code · Non-Negotiable Standards
Correctness is a product feature, not a backend preference.
The database schema, API contracts, and UI flows all carry the burden of truth — not just the last layer to touch the request.
Silent failures are design failures.
Retries, dead-letter handling, structured logs, and metrics exist before the first incident, not after the apology.
Every critical decision deserves a written rationale.
The next engineer should be able to understand the choice, the tradeoff, and what was consciously rejected.
If a system cannot be observed, it cannot be trusted.
Health checks, traces, and dashboards are treated as part of the product surface — not optional operations decoration.
Traced to live production decisions across TaxBridge · SabiScore · SwarmXQ
Lagos-built. Running globally.
Human Context. Make the operator feel human and easy to trust. Slow the pace and widen the breathing room.
How the systems are actually built — architecture, ML decisions, and the production calls behind them. From Lagos to the world.
Start here if you want to understand how these systems were designed.
Why building production systems from Lagos — with unreliable power, variable network, and strict regulatory requirements — produces more resilient infrastructure than systems built in ideal conditions. Constraint is a design tool.
3 systems. 4 certifications. Federal scale. Bring your constraint →
Judgment. Show how decisions are made and defended. Use a chapter-turn feeling rather than a generic fade.
Hiring for a senior engineering role, building from scratch, or containing a production incident — send it over. I respond within 24 hours, usually faster.
STAFF+ / PRINCIPAL
Full-stack delivery · mobile app through production API
Staff+ and Principal roles at fintech and AI-native companies. Ownership of the entire surface — React Native mobile, Next.js dashboard, Fastify API, PostgreSQL RLS data layer. Multi-tenant isolation and zero-downtime deployments are baseline, not negotiated features.
TypeScript 5 · Effect-TS · React Native Expo 54 · Next.js 15 · Spring Boot · FastAPI · Turborepo.
TECHNICAL CO-FOUNDER
Pre-seed to Series A · Africa / emerging markets
Four years shipping production platforms from scratch under compliance pressure — NRS/DigiTax 2026, NDPC, and FIRS audit requirements. Systems that hold through due diligence, not just through the demo.
The system should outlast the seed deck. Available for full-time equity engagements.
INFRASTRUCTURE CONSULTING
Production reliability · compliance remediation · ML backends
Deliverable-led, not hourly. Scoped engagements: incident remediation, architecture review, Nigerian tax compliance (NRS 2026 / FIRS DigiTax), ML inference optimisation, and multi-tenant PostgreSQL RLS implementation.
You get working infrastructure and documented decisions — not a billable-hour report.
Systems that work at 2am.
That's the standard.
Epilogue. Turn conviction into a clear next step. Strip away flourish and land on the CTA.