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Senior Fullstack Engineer (ARG based only)

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Remote from
Argentina
Salary
USD 90k–160k / yr
Employment
Full Time
Experience
Senior
Published
Apply before
4 Nov 2026
Listing views
253
Application actions
10
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AI Summary

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.

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-level role requiring demonstrated architecture and delivery experience across a modern TypeScript full-stack environment. The expectation to ship daily, solve difficult systems problems, influence UX, and proactively drive work creates a demanding, high-ownership environment.

Salary analysis

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

Estimated job medianMarket rate
$125,000
US market range$110k–$175k
AI insightThe disclosed annual salary range is USD 90,000 to USD 160,000, with a midpoint of USD 125,000. For a senior full-stack engineer in the US market, a typical estimated base-salary range is approximately USD 110,000 to USD 175,000, varying by location, company stage, technical depth, and total-equity package.

Core skills

Skills and capabilities most closely associated with this opportunity.

Sample interview questions
Describe a difficult system or internal tool you built that materially improved your team’s productivity.

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.

How do you maintain quality while shipping production software at a very fast cadence?

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.

How have you designed a type-safe API and data-access layer using TypeScript, Node.js, and PostgreSQL?

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.

What is your approach to influencing UX as an engineer?

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.

How would you use coding agents responsibly in a production engineering workflow?

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.

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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