Available for hire
Ndifoin Hilary
Nkaise
Senior Software Engineer building production systems in Django, Spring Boot, and the full stack, based in Bamenda, Cameroon. Founder of two live products.
4+
Years experience
6
Companies
5
Live products
Technical skills
What I work with
Full-stack capability, backend depth.
Backend
Python · Django · FastAPI · DRF · Java · Spring Boot
Frontend
React.js · TypeScript · JavaScript ES6+ · HTML · CSS
Mobile
Flutter (Android & iOS) · React Native
Databases
PostgreSQL · MySQL · Firebase Firestore
DevOps & Cloud
Docker · AWS · DigitalOcean · Cloudflare · Nginx · CI/CD
AI & Security
Anthropic Claude API · AES-256-GCM · JWT · RBAC
Architecture
Multi-tenancy · C4 modelling · REST API design · Row-level security
Testing & Other
pytest · JUnit · Postman · Git · Agile/Scrum
Work history
Professional experience
4+ years across healthtech, fintech, edtech, and mobility, building systems people actually use.
Lead Backend Engineer
- Leading FastAPI backend architecture for a hospital management system covering the full patient lifecycle from consultation to discharge, currently piloting at 1 facility with 3 production modules delivered.
- Designed Module M8, a multi-payer billing engine with FSM-driven charge events and tariff snapshot locking, eliminating billing inconsistencies across facility-specific pricing tiers.
- Implemented async multi-payer billing stack with Firebase Firestore, resolving concurrent charge conflicts and ensuring zero data races under parallel requests.
- Introduced pytest integration tests for billing FSM logic, enabling safe iteration on complex state transitions without regression.
Software Engineer (Full-Stack)
- Own the complete engineering stack as sole engineer, including system design, Spring Boot backend, Flutter mobile, MySQL, and production deployment, delivering a live automobile service booking platform.
- Built booking engine, technician scheduling, and service management modules end-to-end, enabling customers to book and track vehicle maintenance through a Flutter mobile interface.
- Wrote JUnit unit tests for core booking and scheduling logic, ensuring production stability as the user base grows.
Full-Stack Engineer
- Engineered Django DRF backend modules for tenant lifecycle management and rent tracking, contributing to a live property management SaaS serving 50–200 active landlords across Cameroon.
- Built React frontend components for property dashboards and tenant portals, improving workflow efficiency for landlords managing multiple properties.
- Optimised PostgreSQL queries and deployment pipelines, supporting reliable uptime across a multi-tenant production environment.
Backend Engineer
- Delivered production RESTful APIs in Django DRF and Java Spring Boot, integrating JWT auth and payment gateways that improved transaction reliability for real end-users.
- Optimised critical PostgreSQL queries, reducing response times from multiple seconds to sub-millisecond, directly improving platform performance under load.
Backend Engineer
- Architected a multi-tenant School Management SaaS backend in Django DRF with RBAC and row-level tenant isolation, supporting multiple live institutions on shared infrastructure.
- Delivered the core API layer adopted by the product's first cohort of schools, with pytest test coverage for critical auth and permission flows.
Backend Engineer
- Built Django/DRF APIs for a tutoring platform covering user management, scheduling, and payments. First professional engineering role, shipping production features under real deadlines.
Portfolio
Projects & products
Built from zero. Some live, some growing.
Founder
Building
Stakari
AI-native spend intelligence platform for African startups. Detects receipts via Gmail/IMAP, classifies spend with a 5-classifier ensemble, and delivers financial intelligence without corporate card infrastructure.
Spring BootPostgreSQLAnthropic APIAES-256-GCMC4 modelling
Founder
Live
NextBI
AI wealth companion enabling expense tracking, AI-driven financial coaching, and personalised wealth roadmap creation through conversational AI. Supports CSV/Excel import from existing platforms.
DjangoFlutterPostgreSQLDigitalOcean
Founder
Live
WurkAm
Full-stack job marketplace connecting informal workers with employers. Live on Google Play Store. Built with Django REST APIs and a Flutter mobile frontend covering job posting, applications, and profiles.
Django DRFFlutterPostgreSQLJWT Auth
Live
Jappcare
Automobile service booking platform, live in production. Sole engineer covering system design, Spring Boot backend, and a Flutter mobile app spanning booking, technician scheduling, and service management.
Spring BootFlutterMySQLJUnit
Building
COA (Clinic Operations Assistant)
Hospital management system covering the full patient lifecycle. Built Module M8, a multi-payer billing engine with FSM-driven charge events and async Firebase Firestore persistence.
FastAPIPydantic v2FirebaseAsync
Live
Landlord & Tenant Management
Full-stack solo build. Spring Boot backend and a React/TypeScript web app delivering rent tracking, lease management, and payments end-to-end.
Spring BootReactTypeScriptPostgreSQL
Live
Hyrre (Bus Booking)
Frontend engineering contribution. Built the responsive booking flow and seat selection interface in React and TypeScript, integrated fully with backend APIs.
ReactTypeScript
Contact
Let's build something
Open to senior backend, full-stack, and remote engineering roles. Based in Cameroon, working globally.