Senior Full-Stack Engineer, Consumer Products

About T4R Labs
T4R Labs is a deep tech lab building at the frontier of AI. We work on hard, unsolved problems where real-time performance, multi-modal understanding, and safety all have to hold up under production load — not just in a demo.

The Role
We're looking for a senior full-stack engineer to help turn our realtime, multi-modal AI systems into consumer-grade products people love using. You'll work across the stack — from Django/PostgreSQL services and event-driven architecture on the backend to polished React interfaces on the front — and take features from rough idea to shipped product.

This is a hands-on, high-ownership role on a small team, where your code, your product judgment, and your opinions all matter.

What You'll Do

• Design and build consumer-facing features end-to-end, from database schema to UI
• Build and maintain event-driven / event-sourced backend systems in Django
• Ship consumer-grade software — sweat the details that make a product feel finished, not just functional
• Use Claude Code and other AI-assisted development tools as part of your daily workflow to move fast without cutting corners
• Partner closely with the founding team and design to turn rough ideas into shipped features
• Own features from prototype through production, including monitoring and iteration after launch

What We're Looking For

• 5–10 years of experience as a full-stack engineer, with real consumer-grade software shipped to real users
• Strong proficiency in Python and React
• Experience with Django, PostgreSQL, and event-driven or event-sourced architectures
• Hands-on, daily experience using Claude Code (or similar AI coding tools)
• Curious, entrepreneurial, and comfortable speaking your mind — we want people who'll push back on a bad idea, ours included
• A self-starter who takes real ownership and accountability, but also works well as part of a small, close-knit team

Bonus points for:

• Experience with multi-modal AI
• Experience building products on top of or alongside AI/ML systems
• Experience at an early-stage startup, where the roadmap changes as fast as the product

Why T4R Labs

• Work directly with the founding team on problems that don't have off-the-shelf solutions
• High autonomy, high impact — your decisions ship
• We're seed stage: this role is equity only for now, with salary starting once we close funding

Work Authorization & Background Check
You must be a U.S. citizen or otherwise authorized to work in the United States without employer sponsorship. As an early-stage company, we're not able to sponsor work visas at this time. Final offers of employment are contingent on successful completion of a background check.

How to Apply
Reach out with your resume and a note on the most interesting consumer product you've helped build end-to-end.