Marvellous Onyema

I’m Marvellous Onyema, a full stack software engineer and engineering manager based in Lagos, Nigeria. I build and ship live web and mobile products from end to end, using React, Next.js, Angular, NestJS, Express.js and React Native, with PostgreSQL and AWS behind them.

I’ve worked with DCLM Tech Community, EBCOST Project Management Firm (a construction management firm), Mercan Brilliant and TumiCodes. My work includes edutech platforms, a live resource feed for resource engineering, and secure login systems built with OIDC, OAuth 2.0 and modern Express authentication. I also do cloud engineering, build AI-powered features, and have led and mentored engineering teams.

I’m open for freelance work: web apps, mobile apps, cloud setup and AI features. See my work at www.marvecodeit.dev or email me at hello@marvecodeit.dev.

Job title: Software Engineer

Company: DCLM Tech Community

Dates: October 2025 – Present

Location: Lagos, Nigeria

Description: Build and ship live web applications for Deeper Christian Life Ministry using Next.js, NestJS, PostgreSQL and AWS. Delivered the DCLM Testimony platform, with secure login through the ministry’s existing identity provider (OIDC/OAuth 2.0). Design APIs and business logic, and manage deployment and cloud infrastructure.

Job title: Full Stack Developer

Company: EBCOST Project Management Firm

Dates: (add start and end)

Description: Built a live resource feed for resource engineering, giving the team real-time visibility of resources across construction projects. Developed full stack features from the user interface to the Express.js backend and database, and added modern authentication (JWT, refresh tokens, role-based access) to secure the platform.

Job title: Engineering Manager and Cloud Engineer

Company: Mercan Brilliant

Dates: (add start and end)

Description: Led and mentored engineers, set technical direction, and managed delivery of live products, including edutech platforms. Designed and maintained cloud infrastructure, including environments, CI/CD pipelines and monitoring. Worked across web and mobile (React, Next.js, React Native) and backend services.

Job title: Senior Software Engineer

Company: TumiCodes

Dates: (add start and end)

Description: Built and shipped web and mobile products for clients across the full stack, delivering production features with React, Next.js, React Native and Node.js.

School: Anchor University, Lagos

Degree: Bachelor of Science (B.Sc.)

Field of study: Computer Software Engineering

Location: Lagos, Nigeria