Abbey Kumapayi

Senior Full-Stack Product Engineer

I build intelligent, scalable products that connect ideas to impact.

About

I'm Abbey — a product engineer with 7+ years of experience building systems that balance technical precision with real-world impact.

I've led full-stack projects across e-commerce, DataOps, and enterprise software — designing scalable architecture, mentoring engineers, and integrating AI to make tools more intuitive and efficient.

Lately, I've been focused on AI-driven applications — from document intelligence to workflow automation — building products that feel as thoughtful as they are powerful.

Beyond code, I'm curious about systems, design, and the human side of technology. I believe the best products are built with empathy and intention.

Professional Experience

Senior Frontend Developer

React Squad
Remote
Dec 2024 — Present
Built full-stack apps (SocialKit, VoySaude, DealDeploy). Integrated AI for company enrichment and automated outreach. Improved backend efficiency and development speed.
ReactNext.jsTypeScriptAI Integration

Lead Frontend Engineer

Datangle
London
May 2024 — Nov 2024
Architected the visual DataOps workflow builder with conditional branching and YAML config export. Led design discussions and mentored a junior engineer.
Next.jsTypeScriptReact FlowWorkflow Builder

Senior Software Engineer

TheoremOne
California
Mar 2022 — Nov 2023
Developed large-scale enterprise software for a title insurance company. Led chat and bulk operations features, and guided implementation research.
ReactVue.jsNode.jsTypeScript

Senior Frontend Engineer

Pangaea Holdings
California
Jan 2021 — Feb 2022
Improved conversions by 10% through A/B testing (Optimizely), built multi-language support via Crowdin, and developed gift card systems.
ReactTypeScriptA/B TestingLocalization

Lead Software Engineer

Enyata
Lagos
Oct 2019 — Jan 2021
Led teams, established coding standards, mentored developers, and translated client goals into scalable technical solutions.
ReactJavaScriptProject ArchitectureMentoring

Skills & Tools

Frontend

ReactNext.jsReact RouterTypeScriptTailwind CSS

Backend

Node.jsSupabasePrismaConvex DBPostgreSQL

AI & Data

LangChainVector DatabasesOpenAI APIRAG Systems

Product & Design

Design SystemsA/B Testing (Optimizely)Localization (Crowdin)Performance Optimization

Architecture & Ops

API DesignCI/CDMicroservicesAuthentication

Collaboration

MentorshipProduct StrategyDocumentationAgile

Let's Work Together

Whether you're building an AI product, refining a digital experience, or scaling your engineering systems — I can help you bring it to life.

I collaborate with teams to design and ship intelligent solutions that create measurable impact.

Product Engineering

AI Systems

Technical Strategy

© 2025 Abbey Kumapayi