Senior Fullstack Engineer (BR based only)
Confirmed on the employer's own hiring board on Oct 8, 2026. First seen by Alion on Oct 7, 2026.
About Double
Bookkeepers today are stuck working in excel spreadsheets and homegrown project management solutions to support their clients. Double is on a mission to change that.
With our all-in-one tool, bookkeepers can manage their work, communicate with clients, catch hard-to-find errors, and deliver reports to help their small business customers make smarter strategic decisions.
Founded in 2021, Double has raised $12M in funding, backed by leading tech investors like Y Combinator and founders at top startups like Lattice, Front, Superhuman, Plaid, and more. Double currently helps thousands of bookkeepers and accountants manage the books for startups and small businesses across the US.
We're growing fast, and we're looking for a Senior Full Stack Engineer to accelerate our product and help our customers better serve their small business clients.
Our team
https://getjensen.notion.site/About-our-team-4bbfdf46f6834d42879a96495ccf7242
What You'll Do
Ship software to prod on a daily basis with coding agents
Influence UX through product engineering
Collaborate with a high performing EPD team
Who You Are
Have a track record of shipping systems that solved a hard problem, not just shipped on time - e.g. you built the thing that made your team 5x faster, or the internal tool nobody thought was possible
Operate with high agency: you identify what needs to be done and drive it forward without waiting to be told to
Have found yourself wondering "why isn't this moving faster?" in previous roles - and then have done something about it
4+ years of demonstrable experience architecting and developing applications with Node
Demonstrable experience writing type-safe code with TypeScript
Strong ES6 Experience
Experience using agents to ship to production
Experience building applications with React and Node
Experience with TypeORM is a plus
Experience with TanStack Query is a plus
Stack
Front-end: React + Redux Toolkit/React Query (Typescript)
Back-end: Node.js + Express (Typescript), TypeORM, Postgres
Benefits
Competitive pay and equity
Unlimited PTO
Double provides equal employment opportunities (EEO) to all employees and applicants for employment without regard to race, color, religion, sex, national origin, age, disability, genetics, sexual orientation, gender identity, or gender expression. We are committed to a diverse and inclusive workforce and welcome people from all backgrounds, experiences, perspectives, and abilities.