Impact stories · Four lots · Spec sheets
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 numbers are the year and month each started.
Impact story · Lot 2605 · Spec sheet
01 / 04
Agentic AI for College Applications
Origin Scooler AI
May 2026 – Present
TypeScript · React · NestJS · Vercel AI SDK · MongoDB · AWS · Terraform · Docker · PostHog
- 85+PRs landed in 6 weeks, build to launchLaunch
- 5–10xfewer LLM inference round-tripsBrowser agent
- 1,000+questions behind adaptive SAT prepTest prep
Overview · Origin story
Scooler AI is an agentic AI platform that helps students through college applications. As Lead Software Engineer, I led engineering from build to production launch, landing 85+ PRs in 6 weeks, and owned the platform's infrastructure, analytics and engineering process.
A browser agent that fills in the Common App — steerable, batched and held to an eval harness.
Brewing notes · Key contributions
How it was brewed
Agent
5–10xfewer inference round-tripsApplication Browser Agent
Built a steerable browser agent that auto-fills Common App and university application forms. Batched tool calls cut LLM inference round-trips 5–10x, and an eval harness keeps the agent reliable.
Test prep
1,000+question bankSAT Test Prep
Built SAT prep with an adaptive diagnostic, AI-generated study plans, practice drills and full-length mock exams over a 1,000+ question bank.
Assistant
Skyelive web search and secure toolsAgentic AI Assistant
Made Skye, the in-app AI assistant, agentic by building live web search and secure tools over each student's profile, recommendations and essays.
Infrastructure
End to endAWS · Terraform · PostHogInfrastructure & Analytics
Owned infrastructure and analytics end to end with AWS, Terraform, MongoDB, Docker and PostHog.
Process
Engineering Process
Established seed-stage engineering processes:
- Automated weekly AI code-quality reviews
- Jira epics and stories, RFCs and ADRs
- Multi-agent workflows to parallelize delivery
Impact story · Lot 2404 · Spec sheet
02 / 04
Product Feedback & Scaling Operations
Origin Peppermint
Apr 2024 – Present
Next.js · NestJS · TypeScript · Vercel AI SDK · MongoDB · AWS
- 10,000+testers onboarded within the first monthTesters' app
- 50xfaster data-intensive operationsQuery + caching
- $1,000+organic revenue within 3 monthsUsability tests
- V1released after the MVPTeam
- Kudaamong the clients gathering feedbackAdoption
Roast phases · Apr 2024 → Present, to scale
Maillard · Apr 2024 – Jan 2026 · 21 mo
Lead Software Engineer
Development · Jan 2026 – now
Fractional Head of Engineering
Overview · Origin story
Peppermint develops digital tools to help companies collect and analyze product feedback. Starting as Lead Software Engineer, I directed engineering efforts to build user-facing applications that enhanced the product feedback process. In January 2026, I transitioned to Fractional Head of Engineering — leading engineering strategy, technical direction, and cross-functional alignment.
The AI-powered product feedback application became the core of Peppermint's offering.
Brewing notes · Key contributions
How it was brewed
Core product
$1,000+organic revenue in 3 monthsProduct Feedback Application
Directed engineering efforts to create an AI-powered product feedback application that allowed clients (e.g Kuda) to gather, organize, and analyze detailed feedback from testers. This tool is the core part of Peppermint's offerings, enabling more informed product development decisions.
Built AI-powered pipelines with LLMs to generate usability study reports, improving feedback insights for clients.
Enabled the company to organically generate $1,000+ in revenue within 3 months by architecting in-app usability tests and surveys, validating early product-market fit.
Adoption
10,000+testers in the first monthTesters' Application Development
I led the development of a testers' application that helped onboard 10,000+ testers within the first month. The platform was designed for ease of use, and its intuitive interface helped drive high adoption rates among new testers.
Performance
50xfaster data-intensive operationsPerformance Optimization & Scaling
I led the efforts that made data intensive operations 50x faster through query optimizations and caching.
Payments
Mintswallet, integrated with StripeWallet System Implementation
Implemented the wallet (mints) system integrated with Stripe to streamline cash flows, enabling seamless transactions for both clients and testers.
Team
V1released after the MVPTechnical Leadership
I took the lead in assessing new engineering hires, ensuring the team continued to grow with skilled developers. My leadership in recruitment helped maintain the quality and velocity of the engineering team as we expanded, leading to the successful release of Peppermint V1, following the MVP.
Leadership
2026from JanuaryFractional Head of Engineering
Transitioned to Fractional Head of Engineering in January 2026, taking on broader responsibilities including engineering strategy, technical direction, and cross-functional alignment.
Impact story · Lot 2401 · Spec sheet
03 / 04
Blue-Collar Empowerment Infrastructure
Origin LaborHack
Jan 2024 – May 2026
TypeScript · React · Node.js · GraphQL · MongoDB · AWS · Docker
- ₦45m+revenue from three product linesProduct lines
- 99.9%uptime across deploymentsReleases
- 5,000+artisans presenting their work with AIPortfolios
- 1,000+homeowners connected with skilled laborHome maintenance
- 40%fewer rollback incidentsUnit tests
Overview · Origin story
LaborHack is a platform that connects skilled blue-collar artisans to jobs, training, and income opportunities. As part of a distributed engineering team, I contributed to the architecture and implementation of several core systems that powered growth, retention, and automation across the platform.
Artisan recruitment, home maintenance and AI portfolios — over ₦45m in revenue.
Brewing notes · Key contributions
How it was brewed
Product lines
₦45m+revenue across three productsArtisan Recruitment & Home Maintenance Tools
Collaborated cross-functionally to build and launch three product lines that generated over ₦45m in revenue:
- Artisan recruitment products, as well as a community management tool for businesses, accelerating onboarding and increasing partner satisfaction.
- A home maintenance product that connects 1,000+ homeowners with skilled labor, increasing company revenue.
Portfolios
5,000+artisansAI-Driven Artisan Portfolio System
Contributed to the design and engineering of a portfolio builder that leverages AI to help 5,000+ artisans present their experience, skills, and past work.
This tool exposes artisans to higher-value jobs.
Integrations
B2BREST API for third partiesFacility Maintenance REST API
Built a REST API that allows external third-party companies to outsource facility maintenance to LaborHack's network of vetted artisans, opening up a new B2B integration channel.
Payouts
Semi-Automated Payout System
Architected and implemented a payout workflow that streamlined payments to artisans and referrers.
- Reduced processing time
- Improved the quality of life of the customer success team
Analytics
3product dashboardsAnalytics & Funnel Optimization
Managed and implemented analytics dashboards for three key products using MongoDB Charts and Google Analytics.
- Tracked usage, user behavior, and drop-offs to guide feature improvements
- Played a key role in reducing churn and improving activation
Releases
40%fewer rollback incidentsDeployment & Release Engineering
Improved the reliability and flexibility of releases by:
- Introducing feature toggles to control rollout
- Writing unit tests that boosted confidence in deployments and reduced rollback incidents by 40%
Visibility
28%more organic trafficSEO & Visibility
Enhanced the company's online visibility through collaborative SEO strategies with the marketing team.
- Boosted organic traffic by 28% and improved the platform's visibility in search engines by 21%
Impact story · Lot 2309 · Spec sheet
04 / 04
Building a Lifestyle Super App and Web Platform
Origin Wynk
Sep 2023 – Apr 2024
JavaScript · Node.js · Express · React
- 55%retention increase after a React rebuildWeb app
- 4hires: 3 software developers and 1 product designerHiring
- Node.jsserver side for the super app's financial servicesFinancial services
Overview · Origin story
At Wynk, I worked within a cross-functional team on the Wynk Super App, focusing on financial services modules. I rebuilt the company's web application with React, which increased retention by 55%. I also contributed to team growth by evaluating candidates and documenting systems comprehensively.
Rebuilding the web application in React lifted retention by 55%.
Brewing notes · Key contributions
How it was brewed
Financial services
Node.jsand Express, server sideWynk Super App – Financial Services
Collaborated with product, design, and QA to build a lifestyle super app and my main focus was to implement the server side for the application's financial services using Node.js and Express.
Web app
+55%retentionWeb Application Rebuild
I rebuilt the company's web application with React, improving visual appeal, user experience and making actionable items clearer. This resulted in a 55% increase in retention.
Team
4hires who accelerated deliveryHiring & Team Scaling
Assessed technical and cultural fit of candidates, leading to the hiring of 3 software developers and 1 product designer who accelerated delivery.
Docs
Documentation
Authored thorough documentation across Wynk-related software to improve onboarding and maintenance.
Contact · Orders open
Let's build something worth pouring.
chukwuemelie.ezenwa@gmail.com