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Trinity Ogwezi

@trinityogwezi

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I build reliable backend APIs and integrations for enterprise e-invoicing platforms.

Nigeria

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What I'm looking for

I’m looking to build reliable backend systems and APIs, solve complex integration and production problems, and work with teams that value clear communication, maintainable software, and end-to-end ownership.

At Cryptware Systems, I build and maintain the backend systems and APIs behind an e-invoicing platform, supporting enterprise clients processing up to 2,000–3,000 invoices daily. I’ve led production readiness and technical support for 150+ client go-lives, tracing issues across services, APIs, validation workflows, databases, and infrastructure.

I work most comfortably on the backend with Node.js, Spring Boot, Django, PostgreSQL, MongoDB, and Redis, while also building with React, Next.js, and TypeScript when needed. I value clean, maintainable software and clear technical communication that helps product teams, client IT leads, and engineers understand what is being built and why.

Experience

Work history, roles, and key accomplishments

Current

Software Engineer (Technical Lead)

Current

Cryptware Systems Limited

Jul 2025 - Present (1 year 2 months)

Design, build, deploy, and maintain core backend systems and APIs for an e-invoicing platform. Led technical support and production readiness for 150+ clients, resolving complex production and integration issues.

NodeJS Spring Boot Django PostgreSQL MySQL MongoDB Redis CI CD API Design Technical Documentation Production Support Troubleshooting Integration Issues

Backend Developer

A1Quest

Jan 2025 - Dec 2025 (11 months)

Designed and integrated a coupon rewards system into an existing Node.js/MongoDB platform, including discount logic, wallet commission routing, and stacking rules. Built an idempotency layer to prevent duplicate credits and resolved integration issues.

NodeJS MongoDB Idempotency Wallet Systems Coupon Logic Integration Technical Documentation

Backend Developer

DeepSeek Integration / Spring Boot Microservice

Jan 2024 - Dec 2024 (11 months)

Built a Spring Boot microservice to integrate LLM functionality into an existing product. Implemented Redis caching with TTLs and added rate limiting to protect the API.

Spring Boot Java Redis Rate limiting Microservices LLM Integrations

Tutor

Independent

Jan 2024 - Dec 2024 (11 months)

Taught two junior developers backend fundamentals, focusing on Node.js and database design.

NodeJS Database Design Teaching Mentorship

Lead Frontend Developer

V-Tickets

Nov 2023 - Sep 2024 (10 months)

Led frontend development for a Next.js ticketing platform, improving load time by 1.8 seconds and building real-time seat availability with WebSockets. Generated over ₦3 million in revenue within first three months.

Next.js React TypeScript Tailwind WebSockets Code Splitting Dynamic Imports Tree Shaking Storybook

Full-Stack Developer

Capnstyle

Jan 2022 - Dec 2023 (1 year 11 months)

Built an e-commerce website from the ground up, taking ownership of both frontend and backend development and delivering core functionality.

Fullstack Development Ecommerce Frontend Backend

Technical Project Lead

Plug'd

Led technical delivery of a cross-functional software project, coordinating backend, frontend, and design teams. Set up CI/CD pipeline using GitHub Actions and Docker, improving deployment consistency.