Full-Stack Senior Engineer @ fast-growing, mission-driven startup Join to apply for the Full-Stack Senior Engineer @ fast-growing, mission-driven startup role at Gain Life Full-Stack Senior Engineer @ fast-growing, mission-driven startup 4 days ago Be among the first 25 applicants Join to apply for the Full-Stack Senior Engineer @ fast-growing, mission-driven startup role at Gain Life This range is provided by Gain Life. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more. Base pay range $120,000.00/yr - $175,000.00/yr Title: Full-Stack Senior Engineer

Location: Fully remote

Company Overview

Gain Life (gainlife.com) was born out of Harvard University's Innovation Lab. We build software to help people and organizations return to health, work, productivity, and financial wellbeing. We're backed by MassMutual, General Catalyst, Unusual Ventures, and insurance industry veterans. We'd love to connect with curious and motivated individuals who want to help others while solving challenging problems in our open, remote-based, Full-Stack Senior Engineer role.

What We’re Looking For

We're seeking a skilled Full-Stack Senior Engineer to join our team. In this role, you'll design and build cutting-edge user experiences powered by generative AI. You'd be joining a small-ish team (~25 people), that moves fast, values excellence, collaboration, creative problem-solving, and has high expectations of one another. This position offers significant growth opportunities for someone who thrives in a fast-paced environment where your contributions will have a direct impact on our products and users.

Responsibilities

Rapidly building and iterating on new features utilizing a Typescript / React / Express / PostgreSQL stack Comfortable setting up modern infrastructure on AWS Developing scalable solutions that can transition smoothly from concept to production

Must-have Qualifications

Strong fullstack engineering skills (TypeScript, Python, modern frontend frameworks, backend development) Experience integrating LLM APIs into web applications Ability to rapidly prototype solutions while considering production scalability requirements Experience with cloud infrastructure Understanding of software design principles for building maintainable systems Self-starter, motivated, and organized Strong cross-team communication skills Desire to learn and grow with the company

Nice-to-have Qualifications

Familiarity with data warehouse systems like Redshift for managing and analyzing large datasets Experience with microservice architecture Experience in Golang

What We Offer

Opportunity to work with a passionate, collaborative, and innovative team A culture that values creativity, curiosity, and professional growth Competitive compensation package and flexible remote work environment Direct impact on products that help improve people's physical and financial wellbeing

To apply: Please email 'info at gainlife.com' with your resume and why you think you'd be a great fit. No submissions made directly through Wellfound, our website, or LinkedIn will be reviewed. We also ask that you please don’t directly message any Gain Life employees about your candidacy.

Thanks,

Sean (Co-founder)

p.s. Please no recruiters, no candidates not authorized to work in the U.S., and no contractors. Sorry, but these messages/submissions will not be replied to. Seniority level Seniority level Mid-Senior level Employment type Employment type Full-time Job function Job function Engineering and Information Technology Industries Software Development Referrals increase your chances of interviewing at Gain Life by 2x Get notified about new Full Stack Engineer jobs in Boston, MA . Boston, MA $130,000.00-$180,000.00 4 months ago Boston, MA $80,000.00-$100,000.00 2 hours ago Boston, MA $60,000.00-$100,000.00 4 days ago Junior Frontend Software Engineer, MyLexia Boston, MA $150,000.00-$175,000.00 1 month ago Software Engineer: Full-Stack Web Developer Boston, MA $125,000.00-$178,000.00 2 months ago Frontend Software Developer- React/Redux Software Engineer III, Full Stack, Google Ads Cambridge, MA $141,000.00-$202,000.00 4 days ago Associate Software Engineer - 2025 Start Dates Boston, MA $105,000.00-$135,000.00 1 month ago Graduate Software Engineer - Up to $110k + Bonus We’re unlocking community knowledge in a new way. Experts add insights directly into each article, started with the help of AI.

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