Founding Engineer

Were building a new kind of mobile network with a simple but ambitious mission: help people spend less time on their phones while paying less for wireless.

This is a well-funded seed-stage startup backed by $10M+ and led by a very well-known founder and public figure who is extremely hands-on and in the office daily. The company launched in 2025 and is already growing at an exceptional pace. Given the business model, distribution potential, and founder network, this is a meaningfully lower-risk seed startup than average, with a realistic path similar to Mint Mobiles trajectory (exit in a few years)

The core product offers unlimited service on the T-Mobile network, plus cash back when users consume less data, with privacy and mental wellbeing as first-class principles - no data selling, transparent pricing, and a simple $50/month single-line plan. While wireless is the entry point, the broader vision is much bigger: a consumer platform that blends telecom with finance, investing, rewards, and behavioral incentives. Think gamified usage, wallet and subscription experiences, credit-related features, and other consumer-facing products that go well beyond a typical mobile carrier. With a team under 10 today, this role has real 01 ownership and the chance to help shape a platform that will evolve far beyond telecom.

The Role

As a Founding Full-Stack or Backend Engineer, you will report directly to the CTO and work closely with a small group of senior engineers. Youll help design and build core systems from the ground up while owning features end to end.

You will:

• Build, test, deploy, and own critical features across web and backend systems, with some mobile exposure in react Native if interested - certainly not required.
• Work on systems like billing, finance, rewards, gamification, and internal tooling
• Help scale the platform for nationwide adoption while maintaining reliability and performance
• Collaborate closely on product roadmap, experimentation, analytics, and live operations
• Shape technical architecture, tooling decisions, and engineering culture from day one

Tech Stack

The team is flexible on background, but the current stack includes:

Frontend (Web)

• React (TypeScript), Next.js
• Tailwind CSS (shadcn/ui)
• Vercel

Mobile

• React Native, Expo

Backend

• Django (Python)
• PostgreSQL
• AWS (Elastic Beanstalk)

AI Tools

• Cursor, Claude

What Were Looking For

• 5+ years of experience building modern full-stack or backend-heavy applications
• Strong experience designing scalable backend services, APIs, and databases
• Comfort owning ambiguous problems and shipping production systems
• Clear communicator who thrives in small, fast-moving teams
• Excited by 01 work and meaningful product ownership

Bonus Points

• Experience at fast-growing startups or shipping early-stage products
• Familiarity with AWS, CI/CD pipelines, and DevOps best practices
• Interest in fintech, telecom, or consumer subscription products
• Passion for building technology that puts people first

Why This Role

• Strong equity and base
• Founding-level ownership and real influence over product direction
• Direct access to leadership and fast decision-making
• Strong seed funding with a business model that has clear precedent
• Mission-driven company focused on privacy, transparency, and wellbeing
• Hybrid NYC setup near Penn Station with an in-office culture

150K to 180K (potentially flex for right person) + strong equity