ya.

An engineer’s portfolio

Systems. Products. People.

Good software.
Thoughtfully built.

I’m Yusuf Adeniyi, a senior full-stack engineer with 7+ years of experience turning product ideas into dependable production systems.

Selected contributions

Selected contributions

Company work / 01—03
01

Elite Africa

Senior Software Engineer
Aug 2025 – Present

Payments & reliability

Making every payment count.

Built a multi-provider billing engine with smart fallback and a crypto-to-Naira off-ramp, with PostgreSQL and BullMQ payment tracking at the core.

  • Reduced failed payments by 20% with smart provider fallback.
  • Achieved a 99% transaction success rate on the crypto-to-Naira off-ramp; improved payment tracking reliability by 40%.
  • Built referral and rewards systems that increased user acquisition by 25%, and integrated chat support that reduced response time by 30%.
  • PostgreSQL
  • BullMQ
  • Payment systems
99%Off-ramp transaction success
20%Fewer failed payments
02

Goodkind

Senior Software Engineer
Feb 2022 – Jan 2025

Video & product growth

From the first hire to acquisition.

As the first engineering hire, helped scale the product from MVP to acquisition. Built personalized video delivery and a caption-editing tool used by 100,000+ users.

  • Helped scale the product from MVP to acquisition as the first engineering hire.
  • Built personalized video delivery that increased revenue by 10%; shipped a caption-editing tool used by 100,000+ users, reducing caption errors by 50%.
  • Migrated video infrastructure from Cloudinary to Mux while maintaining production reliability and reducing infrastructure costs.
  • Video infrastructure
  • Cloudinary
  • Mux
100k+Caption-tool users
50%Fewer caption errors
03

Tilvio

Senior Software Engineer
Jan 2025 – Jul 2025

Commerce & operations

Less waiting. More moving.

Built high-throughput Go and Node.js APIs for large-volume order submissions, alongside React and TypeScript dashboards for real-time order and fulfillment management.

  • Built high-throughput Go and Node.js APIs supporting large-volume order submissions.
  • Developed React and TypeScript dashboards for real-time order and fulfillment management.
  • Improved API response times by 30% through SQL optimization and Redis-backed caching.
  • Go
  • Node.js
  • React
  • Redis
30%Faster API responses

On my own terms

Independent by design.

Independent project

Feature Flags

Feature management with environment-specific configuration, user targeting, gradual rollouts, and an audit trail for configuration changes.

  • TypeScript
  • Next.js
  • Hono
  • PostgreSQL
Visit project View source for Feature Flags

Independent project

GitX

An AI-powered command-line Git assistant for generating commit messages, pull request descriptions, and changelogs, with user approval before committing.

  • Go
  • CLI
  • AI
View source for GitX

Open source

BillPay SDK

A unified TypeScript SDK for Interswitch and VTPass with strict types and retry logic, reducing provider integration complexity.

  • TypeScript
  • Interswitch
  • VTPass
View source for BillPay SDK
Explore more on GitHub
Portrait of Yusuf Adeniyi
Yusuf AdeniyiSenior Full-Stack Engineer

Beyond the code

A little about me.

I’m Yusuf Adeniyi, a senior full-stack engineer based in Nigeria. I’ve spent 7+ years building products across payments, commerce, and video, working on both the interfaces people use and the systems behind them.

I work with Go, Node.js, TypeScript, and React, with a focus on APIs, payment systems, and background processing. At Goodkind, I was the first engineering hire and helped take the product from MVP to acquisition.

  • TypeScript
  • Go
  • Node.js
  • React
  • Next.js
  • PostgreSQL
  • Redis
  • AWS

B.Tech, Computer Science · Federal University of Technology, Akure · 2015–2020

Read my resume
The next chapter

Let’s build
something good.

Thoughtful products. Dependable systems.
I’d love to hear what you’re working on.

ydeniyi@gmail.com