Suggested rewrite: Led a cross-functional initiative that improved [business outcome] by [measurable result], demonstrating experience relevant to this role...
Senior Fullstack Engineer (ARG based only)
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- Remote from
- Argentina
- Salary
- USD 90k–160k / yr
- Department
- Software Engineering
- Employment
- Full Time
- Experience
- Senior
- Published
- Apply before
- 4 Nov 2026
- Listing views
- 253
- Application actions
- 10
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The role, at a glance.
Double is hiring a senior full-stack engineer based in Argentina to build and ship product capabilities for its bookkeeping workflow platform. The role centers on daily production delivery, product-minded UX influence, and close collaboration with an engineering, product, and design team. Required experience includes at least four years architecting and developing Node.js applications, along with TypeScript, ES6, React, and Node expertise. The stack includes React with Redux Toolkit/React Query on the front end and Node.js, Express, TypeORM, and PostgreSQL on the back end. The employer emphasizes high agency, rapid execution, and using coding agents to deliver software to production.
Role DNA
A quick view of the complexity, pace, ownership and collaboration implied by the job description.
Pace & Pressure
5/5Autonomy Level
5/5Communication Load
4/5Salary analysis
Estimated compensation compared with the broader US market for similar roles.
Core skills
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Sample interview questions
I would explain the problem and baseline constraints, the architecture and trade-offs I selected, how I partnered with stakeholders, and measurable results such as reduced manual work, faster delivery, improved reliability, or higher throughput.
I use small, reversible changes; automated tests at appropriate layers; code review; feature flags where useful; monitoring and alerts; and clear rollback plans. Fast delivery is sustainable when observability and ownership are built into the development process.
I define shared domain contracts, validate runtime inputs at system boundaries, use strict TypeScript settings, model database relationships carefully, and keep business logic separate from transport and persistence concerns. I also use migrations, integration tests, and query profiling to protect correctness and performance.
I start by understanding the user workflow and the desired outcome, then bring technical constraints and implementation options into early design discussions. I use prototypes, instrumentation, and iterative feedback to ensure the experience is both intuitive and feasible.
I would use agents to accelerate exploration, scaffolding, refactoring, test creation, and routine implementation work, while retaining human accountability for architecture, security, correctness, and production review. Agent-generated changes should follow the same testing, review, and deployment safeguards as any other code.
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.
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