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Senior Full-Stack Product Engineer — React Native, Node.js, Next.js

Wellfound
Palo Alto, CA Posted Aug 30, 2026
HybridUSD 120,000 - 180,000 / year

About this role

Senior Full-Stack Product Engineer — React Native, Node.js, Next.js

  • $120k – $180k • 0.2% – 1.0%
  • Remote (Everywhere) • Palo Alto
  • 5 years of exp
  • Full Time

Job Location Palo Alto

Remote Work Policy Onsite or remote

Hires remotely in Everywhere

Visa Sponsorship Available

RelocationAllowed

Skills

  • React Native
  • NodeJS
  • ComfyUI

About the job

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

  • What we care about

  • We care less about credentials and more about judgment, ownership, and the quality of your work.

  • The best engineers here are people who can balance speed with craftsmanship. They know when to keep a solution simple, when to dig deeper, and when to challenge an assumption. They do not wait for every requirement to be perfectly defined before making progress.

  • Experience with consumer products, mobile apps, generative AI, media processing, or early-stage startups is valuable, but not required.

  • Why this role is different

  • Real ownership

  • You won’t be handed tiny pieces of someone else’s roadmap. You’ll own important product areas and have a real voice in how they work.

  • Direct access to the founder

  • You’ll work closely with the founder instead of navigating layers of management, meetings, and approvals.

  • A product people actually use for fun

  • We’re building consumer software designed to entertain people and help them connect with friends—not another internal dashboard or generic AI wrapper.

  • A small, ambitious team

  • Your ideas and output will matter immediately. You’ll help establish how the product and engineering organization operate as we grow.

  • Strong compensation and meaningful equity

  • We want great people to participate in the value they help create. This role includes competitive compensation and a meaningful equity package.

  • What success looks like

Within your first few months, you will have:

  • Shipped meaningful features used by real customers

  • Taken ownership of at least one major product area

  • Improved parts of the product or codebase that were slowing the team down

  • Developed a strong understanding of our customers and product

  • Become someone the team trusts to turn ideas into high-quality releases

  • What we care about

  • We care less about credentials and more about judgment, ownership, and the quality of your work.

  • The best engineers here are people who can balance speed with craftsmanship. They know when to keep a solution simple, when to dig deeper, and when to challenge an assumption. They do not wait for every requirement to be perfectly defined before making progress.

  • Experience with consumer products, mobile apps, generative AI, media processing, or early-stage startups is valuable, but not required.

  • Why this role is different

  • Real ownership

  • You won’t be handed tiny pieces of someone else’s roadmap. You’ll own important product areas and have a real voice in how they work.

  • Direct access to the founder

  • You’ll work closely with the founder instead of navigating layers of management, meetings, and approvals.

  • A product people actually use for fun

  • We’re building consumer software designed to entertain people and help them connect with friends—not another internal dashboard or generic AI wrapper.

  • A small, ambitious team

  • Your ideas and output will matter immediately. You’ll help establish how the product and engineering organization operate as we grow.

  • Strong compensation and meaningful equity

  • We want great people to participate in the value they help create. This role includes competitive compensation and a meaningful equity package.

  • What success looks like

Within your first few months, you will have:

  • Shipped meaningful features used by real customers
  • Taken ownership of at least one major product area
  • Improved parts of the product or codebase that were slowing the team down
  • Developed a strong understanding of our customers and product
  • Become someone the team trusts to turn ideas into high-quality releases

About the company

lestolabs.com

Actively Hiring

small mighty team who ships viral AI apps Palo Alto

1-10

Mobile

SaaS

Artificial Intelligence

Consumer

B2B · SaaS · Mobile · Artificial Intelligence / Machine Learning

  • Top 10% of responders

lestolabs.com is in the top 10% of companies in terms of response time to applications

  • Responds within two weeks

Based on past data, lestolabs.com usually responds to incoming applications within two weeks

Learn more about lestolabs.com

Founders Lesto Labs Founder

View the team

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