JobLogr
From Free Trial to Affiliate Revenue: A Complete Billing System
0
Support Tickets
100%
Attribution Rate
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Accepting new projects
The founding engineer your small team needs right now.
Just need to ship fast? I own the hard parts end to end so your team can move without breaking things.
Full-stack SaaS & Stripe billing·Hybrid mobile at scale·AI integrations built in
For small teams that need to ship. Free 30-minute call.
Small teams are stretched thin
Most small teams don't need another junior developer who needs hand-holding - they need a senior engineer who can own a surface area completely, make good architectural decisions independently, and ship without creating a maintenance burden.
Half-built features, fragile integrations, and tech debt pile up fast when no one on the team has the bandwidth - or the depth - to own the hard stuff. That's the gap I fill.
What I've shipped
Senior-owned, outcome-focused, production-grade
Full-Stack SaaS
Rebuilt a broken billing system for a hospitality SaaS at $50K+ MRR across 350+ venues - trials, per-location pricing, dunning, zero billing errors in production. Multi-tenant architecture owned end to end.
Learn more →Hybrid Mobile at Scale
Ionic/Capacitor iOS and Android apps shipped to hundreds of thousands of users at a Fortune 500 enterprise. AppFlow CI/CD, offline sync, push notifications - production quality, not a prototype.
Learn more →AI Integration
Agentic tool calling connected to real data, multi-provider LLM support (OpenAI, Anthropic, xAI), streaming UI, and per-user cost accounting. AI built into your product properly.
Learn more →Featured Work
See how I've helped teams ship production software.
Lunar Cow Publishing
From Manual Contracts to Instant Digital Payments: A Complete B2B Commerce Solution
$100-$5K+
Transaction Value
2 Flows
Payment Methods
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Hospitality SaaS Platform
Rebuilding a Broken Billing System: Enterprise Multi-Location Subscriptions in 6 Weeks
0
Billing Errors
0
Support Tickets
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"I highly recommend Gavin to anyone looking for a reliable and professional partner for their software development needs."
Ben Harris - CEO of Lunar Cow Publishing
"This combination of skills make Gavin a rare commodity in the world of software."
Nate Bothwell - Owner of N8 Consulting
Simple 4-step process
01
Discovery Call
30-min free consult to understand your product, codebase, and goals
02
Proposal
Detailed scope and fixed price, sent within 24 hours
03
Build & Test
I implement, test thoroughly, and share progress along the way
04
Launch & Stay
Code handover, deployment, and an optional retainer for ongoing work
How we work together
01
Project first
Every engagement starts with a fixed-scope, fixed-price project. You know exactly what you're getting and what it costs - no hourly billing, no scope creep surprises. This gets the work done and gets the relationship started.
02
Retainer to stay
After the project ships, ongoing work moves to a monthly retainer. This covers hosting/infrastructure oversight, maintenance, and a set number of development hours each month for continued feature work. No as-needed hourly billing - just a predictable monthly engagement.
Frequently asked questions
Built by Gavin
All the depth of a senior hire. None of the full-time overhead.
I've built software across environments where quality actually matters - government-contracted systems, enterprise products at scale, and SaaS products I've owned solo from first commit to production. Ten years of that teaches you what breaks.
Mobile apps serving hundreds of thousands of users. Stripe billing overhauls for $50K+ MRR companies. AI integrations with real agentic tool calling - not chatbot wrappers. If it's complex to build and easy to get wrong, I've shipped it.
TypeScriptReactNext.jsAngularNode.jsNestJSIonicCapacitorPostgreSQLSupabaseStripeOpenAIAWSGCPVercel
Got a roadmap and no one to own it?
Book a free 30-minute call. Tell me what you're building and where you're stuck. I'll tell you honestly what you need and whether I'm the right fit.