J
jacobscodes's photo
David Jacobs
From Nigeria 11:52 PM (GMT+01:00)
$30/hr or $50,000/yr

Active over a week ago


Member since Mar 2026

Share this profile:

Full-Stack Software Engineer

Full-Stack Engineer
Available for hire
Years of experience
4+ years
Experience level
Mid-level
Available for
Full-time, Part-time, Contract, Freelance, Internship
Available from
12 Apr 2026
Download Resume / CV

Four years in. Twelve products shipped. One rule: it has to work in production.


What I Work With

My frontend stack is React, Next.js, and TypeScript — building interfaces that load fast, feel smooth, and hold up under real user behaviour. Behind the scenes I work with Node.js, Express, PostgreSQL, and MongoDB, designing APIs and backend systems that don't break when traffic spikes.

I've integrated WebSockets and WebRTC for real-time communication, Wagmi and Viem for Web3, and automated deployments with Docker and GitHub Actions. I move across the full stack without losing context — frontend performance, backend architecture, DevOps pipelines — I've touched all of it in production.


How I Think About Building

I got into engineering the hard way — no cohort, no structured curriculum, just problems I refused to leave unsolved. That shaped how I approach work today.

I think about the person on the other end of the interface before I write a line of code. I think about the developer who maintains it after me. And I think about what happens when things go wrong at 2am with no one around to fix it. That's why I write clean, tested, documented code — and why my systems have handled 50K monthly API requests with zero downtime, with deployments that run in under 20 seconds.

Numbers I'm proud of: 40% reduction in API latency at Yeniyan Group. 35% improvement in user task efficiency at Apollo. 25% faster UI render times through targeted architecture decisions — not guesswork.


Where I've Built

I've worked across early-stage startups, freelance product development, and remote cross-functional teams in AI, blockchain, and fintech-adjacent spaces.

At Yeniyan Group I built blockchain-enabled applications wiring smart contracts to real-time frontend systems — achieving a 99% transaction success rate. At Apollo I shipped responsive dashboards that directly moved product metrics during beta. Freelance, I've sat across from founders with nothing but an idea and delivered a live product in 4–8 weeks — twelve times.

Remote work isn't new to me. I know how to communicate across time zones, stay accountable without a manager watching, and keep delivery consistent when no one is checking.


Things I've Shipped

SessionlyAI — Real-time AI video call platform. Built the full UI and voice agent workflows using React, WebRTC, Node.js, and vector search. Cut processing latency by 30%. Live sessions, real users, no safety net.

VOTS — Decentralised voting system deployed in an actual university election. 320 voters. 99.8% transaction accuracy. Zero failures when it counted most.

Not demos. Not case studies. Production.


When I'm Not Coding

I'm probably reading about something I have no business knowing this much about — or watching football and loudly defending tactical opinions I'm not qualified to have.

Languages

Employment History

Full-Stack Developer at Yeniyan Group Current 2025 - Now
Built blockchain-enabled web applications using Next.js, Wagmi, Viem, and RainbowKit — improving wallet connection speed by 30% and onboarding success rates. Wired Solidity smart contracts to REST and RPC interfaces, achieving a 99% transaction success rate across testnet environments. Cut data-fetch latency by 40% through API caching and response batching. Collaborated with UI/UX and blockchain teams to ship customer-facing features that grew platform engagement by 25%.
Frontend Developer || at Apollo (Saturn Labs) 2025 - 2025
Shipped responsive, high-fidelity dashboards in React, TypeScript, and Tailwind that improved user task efficiency by 35%. Delivered beta features that drove a 20% increase in sign-ups. Optimised component architecture with memoization and lazy loading, cutting UI render time by 25%. Built reusable UI systems that accelerated new module development by 40%.
Full-Stack Developer at Freelance Current 2023 - Now
Built and deployed 12+ full-stack applications using React, Next.js, Node.js, and PostgreSQL/MongoDB — sustaining up to 50K monthly API requests with zero downtime. Automated CI/CD pipelines via GitHub Actions, bringing deployment time under 20 seconds. Containerised production environments with Docker for 100% consistency across dev and staging. Partnered with founders to turn business requirements into shipped products in 4–8 weeks.
Junior Web Developer at TechHive Solutions 2022 - 2022
Built reusable React components and optimised Webpack bundles, reducing overall bundle size by 18%. Improved site performance by 30% through code splitting, compression, and lazy loading. Wrote unit and integration tests in Jest, cutting regression bugs by 40%. Translated Figma designs into pixel-perfect interfaces with 100% design accuracy.
Frontend Developer Intern at CodeLab Innovations 2021 - 2021
Built responsive pages using HTML, CSS, JavaScript, and React — improving mobile usability scores by 22%. Integrated REST APIs and contributed to frontend-backend alignment that sped up delivery timelines. Documented development workflows in Notion to standardise processes for the team.

Education

Bachelor of Technology (Food Engineering) at Federal University of Technology, Akure 2020 - 2025