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Double

Senior Fullstack Engineer (BR based only)

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Remote from
Brazil
Salary
USD 90k–160k / yr
Department
Software Engineering
Employment
Full Time
Experience
Senior
Published
Apply before
9 Nov 2026
Listing views
95
Application actions
6
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AI Summary

The role, at a glance.

Double is hiring a Brazil-based Senior Fullstack Engineer to build and ship product capabilities for a platform used by bookkeepers and accountants. The role emphasizes daily production releases, product-minded engineering, and influencing UX within a high-performing engineering, product, and design team. Candidates need at least four years of Node.js application architecture and development experience, strong TypeScript and ES6 skills, and hands-on React and Node expertise. The technical stack includes React, Redux Toolkit/React Query, Node.js, Express, TypeORM, and PostgreSQL, with experience using coding agents in production expected. The ideal engineer is highly proactive and has a demonstrated record of solving difficult, high-leverage system problems.

Role DNA

A quick view of the complexity, pace, ownership and collaboration implied by the job description.

Job Complexity

4/5
EasyHard

Pace & Pressure

5/5
RelaxedFast-paced

Autonomy Level

5/5
GuidedFull ownership

Communication Load

4/5
IndependentCollaborative
AI insightThis is a senior, high-ownership product engineering role requiring strong full-stack architecture skills and a record of delivering difficult systems to production. The expectation to ship daily and independently identify and remove blockers creates a demanding, fast-moving environment.

Salary analysis

Estimated compensation compared with the broader US market for similar roles.

Estimated job medianMarket rate
$125,000
US market range$115k–$175k
AI insightThe disclosed yearly salary range is USD 90,000–160,000, with a midpoint of USD 125,000. For a US-market senior full-stack engineer, an estimated market range is USD 115,000–175,000 annually; the offer is broadly competitive, though final positioning may depend on location, equity, and scope.

Core skills

Skills and capabilities most closely associated with this opportunity.

Full-Stack DevelopmentTypeScriptJavaScript ES6ReactNode.jsExpress.jsPostgreSQLTypeORMReact QueryProduct Engineering
Sample interview questions
Describe a difficult system problem you solved that materially improved a team or product outcome.

I would explain the initial constraint, quantify its impact, and outline the technical and organizational steps I took. I would emphasize the architecture decision, rollout strategy, measurable result, and what I learned to improve future delivery.

How would you design a TypeScript and Node.js service that supports reliable bookkeeping workflows?

I would begin with clear domain boundaries, type-safe request and persistence models, validation at service boundaries, and transactional handling for sensitive updates. I would also include auditability, idempotency where appropriate, observability, automated tests, and a staged deployment plan.

How do you balance daily production releases with code quality and operational reliability?

I use small, reversible changes protected by automated tests, code review, feature flags, monitoring, and clear rollback procedures. Shipping frequently reduces batch size and risk, while disciplined engineering practices ensure speed does not compromise reliability.

Give an example of how you have influenced UX as an engineer.

I would describe working directly with design and product to identify friction in a workflow, then proposing a technically feasible interaction that improved usability. I would support the example with user feedback, adoption data, or a reduction in support requests or completion time.

What is your experience using coding agents in a production engineering workflow?

I use agents to accelerate well-scoped tasks such as exploration, test generation, refactoring proposals, and documentation, while retaining ownership of architecture and review. Before release, I validate outputs through tests, security and correctness review, and normal deployment safeguards rather than treating agent output as inherently production-ready.

This analysis is generated from the job description. Salary estimates, role characteristics and sample answers are guidance, not employer-provided facts.
Opportunity details

About this role.

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.

Apply now >

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