Braintrust — Freelancer Marketplace
Built key features for Braintrust's freelance talent marketplace as Senior Engineer. Delivered scalable solutions for matching freelancers with projects and payment processing. The platform scaled to thousands of users with high-quality matching and seamless payment flows.
Scope of Work
- React
- TypeScript
- Node.js
- PostgreSQL
- Stripe
- AI/LLM
The Outcome.
See the results.
User Growth
+0%
Platform user growth
Matching Rate
+0%
Successfully matched projects
Payment Volume
+0%
Processed payments
The Approach.
See how we did it.

Marketplace Features
Freelancer Matching Engine
Built core marketplace features including advanced search, filtering, and matching algorithms for freelancers and clients.
Developed matching algorithm with ML components
Built real-time search with filtering capabilities
Implemented recommendation system
Created scalable architecture for high traffic

Payment Processing
Stripe Integration & Payouts
Integrated Stripe for secure payment processing and automated payout systems for freelancers.
Stripe Connect integration for marketplace
Automated payment flows and escrow
Compliance with financial regulations
Real-time payment tracking and notifications

Profile & Reputation
Freelancer Profiles & Reviews
Built comprehensive profile and reputation systems to help clients make informed hiring decisions.
Rich freelancer profile pages
Review and rating system
Portfolio showcase features
Verified skills and certifications
Jason was instrumental in scaling our freelance marketplace. He built the matching algorithms and payment infrastructure that became core to our platform. When we needed to move fast without breaking things, Jason delivered. We went from early beta to thousands of active users, and his work was a huge part of that growth.

Adam Jackson
Co-Founder, Braintrust
More Projects
Got a cool idea? This spot is waiting for your success story.

Jason
Fractional Founding Engineer
Have an idea or prototype?
Let's turn it into an MVP.
I'll tell you in 10 minutes if I can help — and how we'd scope the first sprint. Happy to brainstorm early, even if you're still sketching it out.





