Senior Full-Stack Product Engineer — React Native, Node.js, Next.js
Early-stage startup Lesto Labs is hiring a full-stack product engineer for its consumer AI app that generates funny, shareable content. You'll own features end-to-end — mobile in React Native/Expo, web in Next.js, backend APIs and AI integrations in Node.js (Firebase, OpenAI, Stripe) — working directly with the founder.
- Compensation
- $120K–$180K / yr
- Location
- Palo Alto
- Work setup
- Not specified
- Seniority
- Senior
- Employment
- Not specified
- Experience
- Not specified
- Category
- Fullstack
- Posted
Skills
Must have
- Strong experience building and shipping real products with JavaScript or TypeScript
- Experience with React Native, React, Node.js, or similar technologies
- Comfortable learning quickly and taking ownership across the stack
- Can turn ambiguous product problems into thoughtful, reliable solutions
- Cares about the quality and usability of what customers experience
- Moves quickly without creating unnecessary complexity
- Communicates clearly and proactively
- Can debug problems across mobile, frontend, backend, and third-party services
- Wants meaningful responsibility rather than a narrowly defined engineering role
Nice to have
- Experience with consumer products, mobile apps, generative AI, media processing, or early-stage startups
Full description
Compensation: $120k – $180k • 0.2% – 1.0%
Senior Full-Stack Product Engineer — React Native, Node.js, Next.js
We’re building a fast-growing consumer AI product that helps people create funny, highly shareable content for their friends.
We’re looking for a strong mid-level engineer who wants more than a queue of tickets. You’ll work directly with the founder, own meaningful parts of the product, and help decide what we build—not just how we build it.
This is a high-autonomy role on a small team. You’ll move quickly, talk to users, ship across mobile, web, and backend systems, and see the direct impact of your work.
What you’ll do
- Own features from initial idea through launch and iteration
- Build polished consumer experiences in React Native and Next.js
- Develop APIs, background jobs, and product logic with Node.js
- Integrate AI models for image, video, audio, and conversational experiences
- Improve product quality, performance, reliability, and development speed
- Work directly with the founder on product decisions and technical tradeoffs
- Use customer feedback and product data to improve what you ship
- Help shape our engineering standards as the team grows
Our stack
- React Native and Expo
- Next.js and React
- Node.js
- Firebase and Firestore
- OpenAI and other generative AI APIs
- Stripe
- Mixpanel
- Vercel, heroku, and cloud infrastructure
You do not need experience with every technology on this list. You should be comfortable learning quickly and taking ownership across the stack.
You may be a great fit if you
- Have strong experience building and shipping real products with JavaScript or TypeScript
- Have worked with React Native, React, Node.js, or similar technologies
- Can take an ambiguous product problem and turn it into a thoughtful, reliable solution
- Care about the quality and usability of what customers experience
- Move quickly without creating unnecessary complexity
- Communicate clearly and proactively
- Can debug problems across mobile, frontend, backend, and third-party services
- Want meaningful responsibility rather than a narrowly defined engineering role