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jbdejesuz

SELECTED WORK

Work and projects

Dirt is my main focus. Alongside it, I’ve built tutoring platforms, mobile AI products, and the foundation I use to launch my own software. Here’s what I built and the parts I owned.

Selected projects

Dirt’s public website, showing its land development platform

01FOUNDING ENGINEER · MAIN QUEST

Dirt

I’m a founding engineer at Dirt, building software that helps US land developers decide which sites to pursue and what they can build.

My workI’ve built AI research workflows, source-backed site data, deal briefs, and automated feasibility reports. My work connects backend services and background processing with the maps, tables, and tools developers use to evaluate a site.

AI researchGeospatial dataWorkflow orchestration
Visit Dirt
LoopedIn Learning’s public website, showing its tutoring platform

02CTO WORK · TUTORING PLATFORM

LoopedIn Learning

I built the platform that runs the tutoring experience: booking lessons, taking payments, connecting tutors and students, and turning sessions into AI-assisted reports for parents. Originally TeachLoop.

My workLed architecture and hands-on engineering across the Expo app, Convex backend, video integrations, and Stripe Connect. Mentored engineers and coordinated delivery across six time zones.

V1 delivered in 11 weeks

ConvexExpoStripe ConnectAI session reports
Visit LoopedIn Learning
Caylem’s public website, showing the SaaS product foundation

03MY PRODUCT · SAAS FOUNDATION

Caylem

I built Caylem as the foundation for my own products: a Bun and TypeScript monorepo with Next.js, Convex, authentication, billing, transactional email, and shared UI.

My workBuilt reusable storefronts and product components, with release and deployment automation. This website runs on Caylem’s simpler app and shared packages.

Next.jsConvexTypeScript
Explore Caylem
OnLoop’s publicly shared Collaborative Team Development product image

04FULL STACK ENGINEER → DELIVERY LEAD · 2022–2025

OnLoop

At OnLoop, I owned the R&D backend, built AI-powered WhatsApp agents, and helped move users to a new app. I grew from full-stack engineer into delivery lead while staying hands-on.

My workLed an intern team building an internal portal, built tools for customer success, and maintained automated App Store releases and cloud deployments with the wider engineering team.

Product engineeringAI integrationsDelivery leadership
Visit OnLoop
CounterAI product image showing its meal logging interface

05PRODUCT ENGINEERING · AI MOBILE APP

CounterAI

I built and launched CounterAI, taking the app from a meal photo to a food log with computer vision and generative AI.

My workBuilt the photo-based food logging experience and a goal-based body simulation feature, connecting AI capabilities to a mobile product people can use day to day.

Computer visionGenerative AIMobile
View on the App Store

For development partnerships, my company, Lyemac, is another way to build together.

Caylem is also available at caylem.co.za.

WORK TOGETHER

Contact

Mentorship, fractional CTO work, and development partnerships.