Open to work · Lagos, Nigeria · Remote
Chidiebere Chukwu.
Fullstack engineer building payment systems that scale to millions.
An engineer who ships, not just writes code.
Full Stack Software Engineer with 5+ years building and supporting fintech and payment infrastructure across African and global markets: backend (Java, Spring Boot, NestJS, Node.js), frontend (React, Angular), and the API integrations and databases that tie them together.
Recently focused on AI-powered developer tools, intelligent documentation, and LLM integrations that boost operational efficiency and user experience.
- 0+
- Years shipping to production
- 0M+
- Daily transactions processed
- 0%
- Faster API response times
- 0+
- Enterprise apps delivered
Where I've shipped.
Teams I've built with, and the products I helped move from idea to production.
- Mar 2025 – Present· Remote · Payment Infrastructure (Africa & Global)
Software Integration Engineer @ Passpoint
Building and supporting payment infrastructure powering collections, payouts, virtual accounts, cards, wallets and cross-border settlement across African and global corridors.
- Take merchants through the full integration lifecycle (onboarding, sandbox testing and production go-live) across multiple payment products and regions.
- Debug collections, payouts, virtual accounts, cards, wallets and mobile-money flows by analysing transaction logs, API requests and system behaviour.
- Author API docs, integration guides and Postman collections; support webhook setup, callback validation and transaction reconciliation.
NestJSSpring BootPostgreSQLWebhooksREST APIs - Jul 2023 – Apr 2025· Remote · Tech Solutions & Consulting
Fullstack Software Engineer @ Bambam Automation
Delivered custom full-stack web and cross-platform mobile apps for healthcare, education and business clients, plus technology consulting and digital-transformation support.
- Shipped healthcare platforms (patient records, scheduling, billing, reporting) and education platforms (virtual learning, collaboration, progress tracking).
- Built and shipped cross-platform mobile apps with React Native and Expo from a single TypeScript codebase to both the App Store and Google Play, covering offline-first sync, push notifications, biometric login and over-the-air updates.
- Designed REST APIs, database schemas and responsive UIs across web and mobile; modernised legacy apps through refactoring and performance work.
- Led training and mentorship on web and mobile development, architecture and API design; set up automated testing and EAS-based deployment workflows.
ReactReact NativeExpoNestJSTypeScript - Apr 2024 – Jan 2025· Hybrid · Digital Identity Management
Fullstack Software Engineer @ Seamfix Limited
Built and scaled backend services and frontends for identity-verification and onboarding platforms handling high-traffic workloads.
- Built identity-verification workflows integrating biometric auth, document validation and third-party verification services.
- Improved performance with caching, query optimisation and efficient service architecture; added monitoring, logging and health checks.
- Implemented OAuth, role-based access control and data-protection best practices; shipped Angular/React/TypeScript frontends.
NestJSAngularReactTypeScriptOAuth - Jan 2023 – Mar 2023· Remote · High-Scale Lottery Gaming
Backend Software Engineer (Contract) @ Lo3re
Backend services for a high-scale lottery gaming platform with real-time event processing and secure payment flows.
- Reduced latency for real-time gameplay; built Jest unit and integration test suites for reliability.
- Integrated third-party payment gateways with secure transaction workflows, webhook handlers and reconciliation.
- Set up CI/CD pipelines with GitHub Actions and reusable integration modules for onboarding new providers.
Node.jsNestJSJestGitHub ActionsPayments - Nov 2021 – Dec 2022· Onsite · Lagos, Nigeria
Fullstack Software Engineer @ Byteworks Technology Solutions
Full-stack delivery across client and internal projects in an Agile environment, focused on maintainable, modular architectures.
- Built full-stack apps with React, Angular, Node.js, NestJS and PostgreSQL aligned to business requirements.
- Improved dev/deploy workflows through containerisation, automated testing and CI/CD; drove refactoring and modernisation.
- Established coding standards and best practices; authored technical docs and onboarding guides.
ReactAngularNestJSSpring BootPostgreSQL
What I can build for you.
From a single tricky feature to an entire product, here's where I plug in.
Full-Stack Development
End-to-end product builds: React/Angular frontends wired to NestJS, Node.js or Spring Boot backends, typed all the way through.
ReactNestJSSpring Boot
Payment Infrastructure
Collections, payouts, virtual accounts, cards and wallets, built to reconcile cleanly and fail loudly under 1M+ daily transactions.
CollectionsPayoutsReconciliation
API Integrations
REST APIs, webhooks, OAuth and third-party integrations with the docs and Postman collections that make them easy to adopt.
RESTWebhooksOAuth
Developer Experience
Clean architecture, strong typing, and tooling that lets teams move fast without compounding tech debt.
TypeScriptToolingDX
System Architecture
Data models, event-driven services (RabbitMQ) and deployment topology that stay fast and cheap as traffic grows.
PostgreSQLRedisEvent-Driven
Technical Consulting
From blank repo to production: architecture decisions, code review, and a second pair of senior eyes when it counts.
ReviewStrategyMentoring
The toolkit.
Grouped by where it lives in the stack. Deep where it counts, broad enough to own a product end to end.
Backend
- Java
- Spring Boot
- NestJS
- Node.js
- Express
- C# / .NET
Frontend
- React
- Angular
- TypeScript
- Tailwind CSS
- Shadcn UI
- Vite
Mobile
- React Native
- Expo / EAS
- React Navigation
- Push Notifications
- Offline-first Sync
- App Store / Play Store
Data & Infra
- PostgreSQL
- MongoDB
- Redis
- Docker
- Kubernetes
- AWS
Practices & AI
- CI/CD · GitHub Actions
- RabbitMQ / Event-Driven
- LLM Integration
- System Design
Things I've shipped.
Real products with real users. A selection of recent builds, each one live.

Miönia
Powers 10,000+ homes & businesses with real-time inventory, order processing and customer dashboards.
ReactTypescriptContext APITailwindCSSNestJsMongoMongooseVercel
View live
Niger Foundation Hospital
Presents a not-for-profit hospital's specialties, diagnostics and emergency care with community-outreach programs, serving Enugu since 1993.
Next.jsReactTypescriptTailwindCSSVercel
View live
Eva Star Foundation
Scholarship applications, donation processing, volunteer coordination and impact tracking in one platform.
ReactTypescriptContext APITailwindCSSNestJsMongoMongooseVercel
View live
Averix Accountants
Bookkeeping, tax, VAT, payroll and virtual CFO services for UK small businesses backed by Xero, QuickBooks and Making Tax Digital compliance.
Next.jsReactTypescriptTailwindCSSVercel
View livemore builds

SparkTap
Peer-to-peer solar marketplace: sell excess power to neighbors via prepaid energy tokens.

HeadPhones Store
Audio-gear store with product filtering, reviews, and detailed specs.

GiveFlow
Donation platform: browse causes, give securely, and track your giving.
Engineering with Claude Code.
I don't just prompt an assistant. I engineer the harness around it: the agents, guardrails, and gates that make AI output trustworthy enough to ship.
❯ tree .claude
agents/hooks/skills/commands/CLAUDE.mdQUALITY_GATE.mdsettings.json
# 4 subagents · 12-gate Definition of Done · grep-enforced anti-slop · secrets denied at the permission layer
.claude/agents/*Multi-agent orchestration
Decompose a task across purpose-built subagents that run in parallel and report back, so the main thread stays fast and focused.
- Author custom subagents for code review, test authoring, security audit and quality gating, each with scoped tools and its own system prompt.
- Fan work out with parallel agents and pipelines; hand deep file reads to subagents so they never crowd the working context.
- Drive slash commands like /review, /qa and /ship that invoke the right agent for the job.
.claude/hooks · CLAUDE.mdGuardrails and governance
Turn taste into rules a machine can enforce: cited conventions, automatic hooks, and a written Definition of Done.
- Write CLAUDE.md conventions where every rule cites the file it came from, so guidance stays honest and current.
- Wire PostToolUse hooks that lint each edited file the moment it changes and block the edit on failure.
- Enforce an anti-slop gate with grep: no filler phrases, no em dashes, no uncited claims, no dead citations.
settings.json · security-auditorSecurity and protection
Least privilege by default, with secrets and destructive actions walled off from the agent entirely.
- Scope permissions to an explicit allowlist and deny reading .env files, force pushes and destructive shell commands.
- Audit every touched endpoint for auth, input validation, injection and secret or PII leakage.
- Check dependency CVEs at a set severity floor, and record dated, owner-named waivers when a fix would break the build.
QUALITY_GATE.mdQuality and verification
Nothing ships until the gate passes, and a pass means the command, the exit code and the number that mattered.
- Codify a twelve-part gate: lint, types, unit, integration, e2e, coverage, mutation, performance and security.
- Treat missing tooling as a blocker with a named fix, never a silent skip or a lowered threshold.
- Verify a change end to end, from the browser through the API to the data, not just green unit tests.
.claude/skills · MCPSkills, MCP and automation
Reusable playbooks for recurring patterns, plus live tool connections that let the agent act on real systems.
- Package repeatable repo patterns as skills, each with steps, a real example and the gates that apply.
- Connect MCP servers for design (Figma), deploys (Vercel), data (Firebase), APIs (Postman) and live browser automation.
- Schedule recurring agents and long-running workflows for reviews, checks and codebase-wide migrations.
CLAUDE.md · memoryContext and memory engineering
Keep an agent oriented across a large codebase and long sessions, so it acts on facts instead of guesses.
- Curate CLAUDE.md and per-repo memory so every session starts from the ground truth.
- Delegate deep reads to subagents to protect the context window and keep token spend predictable.
- Structure work as scoped, resumable phases instead of one sprawling prompt.
What the people I ship with say.
Recommendations written on LinkedIn by the engineers and leaders who managed me, quoted exactly as they wrote them.
I had the pleasure of managing Chukwu Chidiebere and was consistently impressed by his technical skills, professionalism, and ownership. He is a dependable software engineer who delivers high-quality solutions, collaborates effectively with cross-functional teams, and approaches challenges with a strong problem-solving mindset.
Chukwu Chidiebere is a valuable team member, and I would confidently recommend him to any organization looking for a talented and reliable engineer.
Working with Chidiebere or John as we often call him has been a genuinely great experience. He brings strong technical skills, clear communication, and real ownership to everything he touches. He adapts fast, collaborates well across teams, and consistently delivers quality work without needing hand-holding.
Reliable, motivated, and easy to work with, Chidiebere is the kind of engineer any team would be lucky to have. I recommend him without hesitation.
Read it in fullI had the pleasure of managing Chukwu Chidiebere as a backend developer on a project from April 2025 to February 2026, and I'm glad to recommend him.
What stood out most about Chidiebere was his curiosity. He didn't just complete tickets and move on. He asked why something worked the way it did. He actively sought out new tools, and approaches rather than sticking to what was familiar to get a task done. That eagerness to learn made him quick to pick up new technology, and it consistently pushed the quality of his
3 shown · full notes live on LinkedIn
The one-page version.
Prefer a document? Grab the full résumé (roles, products I've shipped, and the stack behind them), ready to print or forward.
PDF · Updated Jun 2026
Let's build something.
Have a product, a role, or a hard problem? I read every message and reply within a day.
Prefer email or socials? Pick whatever's easiest, I'm responsive everywhere.
- Emailchukwuchidieberejohn@gmail.com
- GitHubgithub.com/johnkrator
- LinkedInin/chukwu-chidiebere
- X / Twitterx.com/Oxc2god
- Blogtelldev.vercel.app
Open to work · Lagos, Nigeria · Remote