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C.J. Obumse
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ImpactStories

Impact story / Scooler AI

Agentic AIfor CollegeApplications

May 2026 – Present

Leading engineering on an agentic AI platform for college applications, from build to production launch: a browser agent, SAT prep and an in-app assistant, and the infrastructure underneath.

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.

  1. Agents

    Application 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.

    Visit Scooler AI

  2. Learning

    SAT 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.

Velocity85+PRs landed in 6 weeks, from build to production launch.
Efficiency5–10×Fewer LLM inference round-trips from batched tool calls.
Practice1,000+Questions in the bank behind adaptive SAT prep.
A steerable browser agent that auto-fills Common App and university application forms.
On the application browser agent, kept reliable by an eval harness
  1. Assistant

    Agentic 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.

  2. Infrastructure

    Infrastructure & Analytics

    Owned infrastructure and analytics end to end with AWS, Terraform, MongoDB, Docker and PostHog.

  3. 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
Summary
  • Led the platform from build to production launch, landing 85+ PRs in 6 weeks
  • Cut LLM inference round-trips 5–10x in the application browser agent with batched tool calls
  • Shipped SAT prep over a 1,000+ question bank and an agentic in-app assistant

Impact story / Peppermint

ProductFeedback &ScalingOperations

Apr 2024 – Present

From Lead Software Engineer to Fractional Head of Engineering: building the AI-powered feedback product at the core of Peppermint, and the team that ships it.

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.

  1. Product

    Product 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.

    Visit Peppermint

  2. Adoption

    Testers' 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.

    Visit the testers' application

Adoption10,000+Testers onboarded within the first month.
Performance50×Faster data-intensive operations via query optimisation and caching.
Revenue$1,000+Organic revenue within 3 months of in-app tests and surveys.
An AI-powered feedback application that became the core of Peppermint’s offering.
On the product feedback application, used by clients including Kuda
  1. Performance

    Performance Optimization & Scaling

    I led the efforts that made data intensive operations 50x faster through query optimizations and caching.

  2. Payments

    Wallet System Implementation

    Implemented the wallet (mints) system integrated with Stripe to streamline cash flows, enabling seamless transactions for both clients and testers.

  3. Leadership

    Technical 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.

  4. Direction

    Fractional 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.

Summary
  • 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
  • Built the testers' application that onboarded 10,000+ testers in a month
  • Implemented wallet system integrated with Stripe for streamlined cash flows
  • Transitioned to Fractional Head of Engineering in January 2026

Impact story / LaborHack

Blue-CollarEmpowermentInfrastructure

Jan 2024 – May 2026

Building the systems that connect skilled blue-collar artisans to jobs, training and income: recruitment, home maintenance, AI portfolios and the payouts behind them.

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.

  1. Revenue

    Artisan 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.

    Businesses Homeowners

  2. AI

    AI-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.

    View Portfolio

Revenue₦45m+Revenue from three product lines.
Reliability99.9%Uptime from more flexible, reliable deployments.
Reach5,000+Artisans presenting their work with the AI portfolio builder.
Three product lines that generated over ₦45m in revenue.
On artisan recruitment, community management and home maintenance
  1. Integrations

    Facility 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.

    API Documentation

  2. Payments

    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
  3. Analytics

    Analytics & 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
  4. Reliability

    Deployment & 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%
  5. Growth

    SEO & 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%
Summary
  • 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

Impact story / Wynk

Building aLifestyleSuper App andWeb Platform

Sep 2023 – Apr 2024

Building the server side of a lifestyle super app’s financial services, and rebuilding the company’s web application in React, which lifted retention by 55%.

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.

  1. Fintech

    Wynk 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.

    Wynk on Google Play

  2. Retention

    Web 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.

    Visit Wynk

Retention55%Increase in retention after rebuilding the web application in React.
Hiring4Hires from candidate assessments: 3 software developers and 1 product designer.
A 55% increase in retention from rebuilding the company’s web application in React.
On the web application rebuild
  1. Hiring

    Hiring & Team Scaling

    Assessed technical and cultural fit of candidates, leading to the hiring of 3 software developers and 1 product designer who accelerated delivery.

  2. Documentation

    Documentation

    Authored thorough documentation across Wynk-related software to improve onboarding and maintenance.

Summary
  • 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