Lot CJO-2309 · Roasting since Sep 2023

ChukwuemelieJason Obumse

I turn complex business problems into reliable, revenue-generating products — with TypeScript, React and Node.js, from system design to DevOps.

Read the Peppermint story Resume

Fig. 1 — Career roast profile

Scope of ownershipMilestone

Sep 2023
Wynk — Full Stack Developer
Jan 2024
LaborHack — Software Engineer
Apr 2024
Peppermint — Lead Software Engineer
Jan 2026
Fractional Head of Engineering
May 2026
Scooler AI — Lead Software Engineer

Roast in progress

About · The producer

Reliable products that earn their keep.

I am a Full Stack Engineer with 3+ years of experience building reliable and revenue-generating products across B2B and B2C domains. I specialize in TypeScript, React, and Node.js, with experience spanning system design, DevOps, and data analytics.

I've helped companies like LaborHack, Peppermint and Wynk turn complex business problems into scalable products that drive growth and efficiency — from AI-powered systems for blue collar workers, to external APIs for third party integrators and platforms that enable data-driven product development for top companies like Kuda.

Resume LinkedIn GitHub

Yield · Measured in production

What came out of the roaster.

156^%user growth in 12 days after the redesign & marketingScooler AI
10,000⁺testers onboarded in the first monthPeppermint
50^xfaster data-intensive operationsPeppermint
₦45m⁺revenue from systems builtLaborHack
99.9^%uptime across deploymentsLaborHack
55^%retention increase after a React rebuildWynk

Stack · Tasting notes

On the bar, and where it was poured.

LanguagesPoured at

TypeScriptScooler AI · Peppermint · LaborHack
JavaScriptWynk
PythonIn the kit

ServerPoured at

Node.jsLaborHack · Wynk
NestJSScooler AI · Peppermint
Vercel AI SDKScooler AI · Peppermint
Express.jsWynk
GraphQLLaborHack

InterfacePoured at

ReactScooler AI · LaborHack · Wynk
Next.jsPeppermint

DataPoured at

MongoDBScooler AI · Peppermint · LaborHack
PostgreSQLIn the kit
MySQLIn the kit

InfrastructurePoured at

AWSScooler AI · Peppermint · LaborHack
DockerScooler AI · LaborHack
TerraformScooler AI

PracticeSince

System design2023
DevOps2023
Data analytics2023

House specialty — TypeScript, React, Node.js

Impact stories · Four lots

Roasted in production, labelled honestly.

Each role, read like a bag label: where it came from, how it was processed, how long it roasted, and what it yielded.

Lot 2605 · May 2026 – Present

Scooler AIAgentic AI for College Applications

Lead Software Engineer

Led engineering for an agentic AI platform for college applications, from build to production launch, landing 85+ PRs in 6 weeks
Built Skye, an AI agent that guides each student's application journey from discovery to essays and application
Built SAT test prep with an adaptive diagnostic, AI-assisted study plans, practice drills and full-length mock exams over a 1,000+ question bank
Led the application's redesign and supported marketing efforts, improving UI/UX and growing the user base by 156% in 12 days

156% user growthRead the story

Lot 2404 · Apr 2024 – Present

PeppermintProduct Feedback & Scaling Operations

Lead Software Engineer → Fractional Head of Engineering

Launched a product feedback application used by companies like Kuda
Built AI-powered pipelines with LLMs to generate usability study reports
Architected in-app usability tests and surveys which generated over $1,000 within 3 months

$1,000+ in 3 monthsRead the story

Lot 2401 · Jan 2024 – May 2026

LaborHackBlue-Collar Empowerment Infrastructure

Software Engineer

Built systems for artisan recruitment, home maintenance, and AI-driven portfolios, generating over ₦45m in revenue
Provided data-driven insights that guided product improvements and optimized funnels
Improved the flexibility and reliability of software deployments ensuring 99.9% uptime

₦45m+ revenueRead the story

Lot 2309 · Sep 2023 – Apr 2024

WynkBuilding a Lifestyle Super App and Web Platform

Full Stack Developer

Contributed to a lifestyle super app, focusing on financial services
Rebuilt the company web application in React, increasing retention by 55%
Led technical and culture-fit assessment of new hires

+55% retentionRead the story

Projects · Single origin

Single origin, built end to end.

Single origin · Logistics

PaprWrk

Reads the carrier paperwork small freight brokerages get, matches it to loads, and flags what's missing or wrong before they bill or pay. Prototype, currently testing with freight brokers.

TypeScript · React · Vite

Live site

Single origin · AI

Hunt Assistant

An AI-powered job hunting platform that analyzes your resume against job requirements, generates tailored cover letters, and tracks your applications — with auth, persistent tracking and AI insights.

TypeScript · Next.js · MongoDB · AI

Live site GitHub

Zen fintech dashboard with multi-currency wallets and virtual cards — Fig. 4 — ZenWallets

Single origin · Fintech

Zen

A fintech app with multi-currency wallets, currency exchange, and virtual cards you can create, fund and track. Integrates Maplerad and Paystack.

TypeScript · Next.js · Node.js · MongoDB

Live site GitHub

Writing · Brew journal

Notes on the craft.

Essays on product engineering, careers and implementation, published on Stackademic.

Stackademic · Product

MVPs and the Engineering Trap: Building What Actually Matters

“Many startups fail not because they can't build, but because they build the wrong things — perfectly.”

Contact · Orders open

Let's build something worth pouring.

chukwuemelie.ezenwa@gmail.com

Resume Drive ↗LinkedIn chukwuemelie-obumse ↗GitHub jason-ezenwa ↗