Hi, I'm Chisom ๐Ÿ‘‹
I build new products from the ground up and join others mid-flight to make them work โ€” Fullstack Engineer open to contract & part-time roles.
Open to contract & part-time work
Chisom Udonsi

About

I'm a fullstack engineer who thrives whether I'm building a product from scratch or joining one mid-flight to make it better โ€” like getting promoted to core engineer at Seamailer, or driving measurable performance and UX wins on contract work like YPMC. I build across web and mobile, with a strong foundation in TypeScript, Vue, React, and Node.js. Since 2021, I've gone from teaching to full-time engineering โ€” and I'm currently open to contract and part-time work.

Work Experience

S

Seamailer
Full-time

September 2024 - Present
Fullstack Engineer ยท Remote, Lagos
Started as a frontend engineer and was promoted to fullstack for the impact of my work โ€” now a core engineer on the product. Build and maintain high-performance UIs with Vue.js, implement backend API logic for complex business requirements, and take part in code reviews across features, enhancements, and fixes. Currently helping ship and support the platform for 1,000+ active users.
A

Assist Factory
Part-time

November 2024 - Present
Frontend Engineer ยท Remote, United States
Brought on as the core frontend engineer to help build this platform connecting businesses with skilled virtual assistants from the ground up. Designed and shipped the request system powering task management, built real-time messaging for seamless client-assistant communication, and owned the UI end-to-end for a polished, professional experience.
S

SBSC
Contract

February 2026 - Present
Senior Frontend Engineer ยท Hybrid, Lagos
Senior frontend engineer delivering software solutions across SBSC's client portfolio on a contract basis โ€” specific projects and clients are confidential under NDA.
U

Umuigbo Diaspora
Contract

June 2026 - July 2026
Fullstack Engineer ยท Remote, Germany
Brought on as the sole engineer to architect and build Umuigbo Diaspora from scratch on a contract engagement โ€” a platform connecting the Igbo diaspora with home through a suite of tools and services for Igbos living abroad. Owned everything end-to-end: architecture, frontend, backend, and deployment.
Y

YPMC
Contract

May 2025 - July 2025
Fullstack Engineer ยท Hybrid, Lagos
Joined this logistics platform on a 3-month contract to resolve data-consistency issues and improve UX. Introduced code splitting, image lazy-loading, and state-level performance optimizations, and raised accessibility standards across the app โ€” taking Lighthouse scores from 30% to 62% (performance), 45% to 77% (accessibility), 72% to 96% (best practices), and 90% to 100% (SEO). Also built responsive interfaces from Figma designs using React, Next.js, and TailwindCSS, and integrated real-time tracking via WebSockets โ€” the platform picked up 10+ new paying users during my time there.
A

Alajo
Contract

April 2025 - November 2025
Frontend Engineer ยท Hybrid, Lagos
Joined the frontend engineering team and started by rebuilding the landing pages, then moved into building new features for the platform's customer-facing tools. Worked on a platform that digitizes savings for low-income earners, helping millions achieve financial inclusion without needing smartphones or internet access, using Vue.js, TailwindCSS, and related tooling, integrated with backend APIs in close collaboration with product and engineering teams.

Education

F

Federal University of Technology Owerri
First Class Honours

2019 - 2025
Bachelor of Technology in Computer Science

Tech Stack

HTML
CSS
JavaScript
TypeScript
React
Vue
Tanstack Start
Next.js
Nuxt.js
React Native
Expo
TailwindCSS
SCSS
jQuery
Node.js
Express
NestJS
MongoDB
PostgreSQL
SQL
Figma
Git
GitHub

Currently exploring: Flutter, Rust, Solidity, Python

My Projects

Check out my latest work

I've worked on a variety of projects, from simple websites to complex applications. Here are a few of my favorites.

Seamailer

Seamailer

Promoted from frontend to fullstack engineer for my impact โ€” now a core engineer on this email marketing platform, serving 1,000+ active users. Ship features across the stack, from campaign scheduling and automation to a drag-and-drop template editor, and take part in code reviews for every feature, enhancement, and fix that ships.

Vue
Nuxt
Typescript
TailwindCSS
Preline UI
+14
Assist Factory

Assist Factory

Engineered a platform connecting businesses with skilled virtual assistants. Implemented a streamlined request system for task management, integrated real-time messaging for efficient communication, and optimized the user interface for a smooth and professional experience.

Next.js
Typescript
TailwindCSS
Shadcn UI
Zustand
+6
YPMC

YPMC

Joined this logistics platform on a 3-month contract to fix data inconsistencies and UX performance issues. Introduced code splitting, lazy-loaded images, and state optimizations, pushing Lighthouse scores from 30% to 62% (performance), 45% to 77% (accessibility), 72% to 96% (best practices), and 90% to 100% (SEO) โ€” while the platform gained 10+ new paying users.

Next.js
Typescript
TailwindCSS
Shadcn UI
Axios
+4
Umuigbo Diaspora

Umuigbo Diaspora

Brought on as the sole engineer to architect and build Umuigbo Diaspora from scratch on a contract engagement โ€” a platform connecting the Igbo diaspora with home through a suite of tools and services for Igbos living abroad. Owned everything end-to-end: architecture, frontend, backend, and deployment.

Tanstack Start
NestJS
PostgreSQL
Prisma
Typescript
+5
Alajo

Alajo

Rebuilt the landing pages before moving into building new customer-facing tools for this savings platform helping millions of low-income earners achieve financial inclusion without needing smartphones or internet access.

Nuxt.js
Vue.js
Typescript
TailwindCSS
Pinia
+2

Skills

Frontend Development
Backend Development
Fullstack Development
Mobile App Development
Performance Optimization
Accessibility (a11y)
API Design & Integration

What I Can Do For You

Frontend Development

Responsive, high-performance UIs built with React, Vue, Next.js, or Nuxt.js.

React
Vue
Next.js
Nuxt.js
Tanstack Start
TypeScript

Backend Development

Scalable APIs and backend architecture with Node.js, Express, and NestJS.

Node.js
Express
NestJS
PostgreSQL
SQL

Fullstack Product Development

End-to-end web apps, from architecture to deployment.

Next.js
Node.js
MongoDB
PostgreSQL
SQL

Mobile App Development

Cross-platform apps with React Native and Expo.

React Native
Expo

Performance & Accessibility Audits

Lighthouse-driven fixes for speed, SEO, and accessibility.

Performance
Accessibility
SEO

Product Rescue

Joining an existing codebase mid-flight to fix what's broken and ship what's next.

Debugging
Refactoring
Code Review
Testimonials

What people say

Feedback from clients and collaborators I've worked with.

โ€œI've mentored a lot of engineers over the years, and Chisom is one of the few I keep bringing back onto new projects; we've built and shipped together across Seamailer, Bridge Credit, and Alajo. He doesn't just write code that works, he writes code that holds up in production: fast, reliable, and genuinely well-thought-out. He takes ownership like it's his own product, and that's rare. Any team or client would be lucky to have him.โ€

Olalekan Oladosu

Senior Software Engineer

โ€œWorking with Chisom at YPMC was a great experience. He owned the frontend development for both the user-facing and logistics partner web applications, and delivered consistently throughout the project. Beyond shipping features, he also put in the work to improve performance and reduce page load times, which had a direct impact on the product experience. He's technically solid, easy to collaborate with, and the kind of engineer who takes ownership of his work. I'd work with him again without hesitation.โ€

Victor Okoye

Senior Backend Engineer

โ€œWhen we brought Chisom onto Assist Factory, he delivered the frontend UI well ahead of the timeline we'd projected, which almost never happens. The quality held up too, not just the speed. I was so happy with the outcome that I've since recommended him for two other projects. He's become someone I trust to just hand a problem to and know it'll get done right.โ€

Kenechukwu Anolue

@Kene_Nna

โ€œAfter Assist Factory, I kept bringing Chisom onto new projects - three more since then, and Umuigbo Diaspora is the one I'm proudest of us shipping together. He also built my own personal portfolio, and that's not something I can hand off lightly. What I've come to rely on most is his resilience; when a project gets hard, he doesn't fold or cut corners, he just keeps working the problem until it's actually solved. He delivers work I don't have to double-check.โ€

Chibundu Ogbonnia

@chibunduogbonnia

โ€œAssist Factory was the first project Chisom and I worked on together, but you'd never have guessed it, we synced like we'd shipped ten products before it. He took real ownership of the frontend, not just tickets, and it showed: what started as a contract engagement turned into a part-time role because management could see the work ethic and how well we operated as a unit. As the backend engineer on that build, I can say without hesitation, he's technically sharp, moves fast, and makes whoever he's working with better. I'd bring him onto any project, no second thoughts.โ€

Uchenna Onyenso

Senior Backend Engineer

โ€œChisom was my favorite kind of engineer to work with on Alajo, the kind who doesn't add to my stress pile. He was always attentive, always ahead of problems instead of behind them, and some of our best product improvements came out of side conversations he started, not tickets I assigned. Whether it was catching an error before it became a bug report or pushing for a better UX flow, he just handled it. As a PM, that's priceless. I'd work with him again in a heartbeat, it takes real weight off my shoulders knowing he's on the team.โ€

Opeyemi Olayinka

Product Manager

โ€œI needed a portfolio as a designer with which I could begin my cold outreach to prospective clients. I reached out to Chisom to help me out with the development, and at every step of the development phase, he inquired for feedback showing how detailed and committed he was to the project. He eventually ended up over delivering on the design I sent to him with amazing insights & suggestions, and the site was very optimized and clean. 100% recommend him.โ€

Wisdom Chima

@kreatorgraphics

โ€œChisom is a brilliant developer in every definition of the word, he is well versed in the technologies he utilizes and can analyze tricky problems and implement amazing solutions. He's a lifelong learner obsessed with perfecting his craft. He's definitely the guy for the job. Whatever it is, he can crack itโ€

Victor Iloenyenwa

Fullstack Engineer

โ€œChisom is a very unique and talented developer. He combines effective and efficient implementation of functionalities with great attention to detail. He's a great team player and always tries to keep up good communication with his client, thanks to his great communication skills. He has shown a great sense of responsibility in the few projects he's worked on with me and I'll recommend him to every hiring manager because he'll be an excellent addition and improvement to any team!โ€

Christopher Asor

@christopher-asor

โ€œI have worked with Chisom Udonsi for years and he has always been a professional. He can work under pressure and easily adapt to change, embraces diversity and is open to growth opportunities. He's a great problem-solver with great leadership skills. He can easily work with anyone because of his interpersonal talent. I hope he grows and continues to thrive in his endeavours.โ€

Jeffrey Adjari

Fullstack Engineer

โ€œChisom, also known as the "Senku Ishigami of the Dev World", is a tech enthusiast and highly skilled developer. His relentless pursuit of knowledge and unwavering determination have made a profound impact on my programming journey. Chisom's mastery of frontend development is awe-inspiring, as he effortlessly translates complex concepts into elegant code. With his guidance and expertise, I have experienced tremendous growth and gained invaluable insights. Chisom's exceptional mentorship inspires positive change, making him a source of inspiration in my life.โ€

Henry Kanu

Frontend Engineer

โ€œChisom is a very remarkable programmer and mentor. His quick problem-solving skills and structured lifestyle make him one of the best programmers in the tech niche of our school. His efficient teaching skills and flawless communication enabled me to grasp whatever he taught me or any other person in just minutes. Of course, all these qualities of his are just to name a few; working and interacting with him will reveal just how good he is at what he does.โ€

Tochukwu Nwankwo

Software Engineer

Contact

Get in Touch

Open to contract and part-time roles โ€” pick whichever's easiest for you.

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