Ai-Driven Fullstack Developer

Jbk Argentina; Rosario; A distancia; ARS 85.158.000 - 170.316.000; Jornada completa

Ventajas ofrecidas por este puesto de trabajo

Fully remote contractor role

US-overlapping core hours

Descripción de la vacante

JBK Argentina is seeking a senior full-stack developer for a remote product studio. You’ll join a live product team, building server-side features from Azure SQL up through the API, and crafting the React and TypeScript screens on top.

You’ll guide AI-generated specs, tests and migrations, review diffs, and own an area end-to-end such as the task engine or legacy migrations. Expect four to five features per two-week sprint in a live production environment.

Formación

• 4+ years building full-stack web applications in production.
• Experience in codebases you didn’t write and learning conventions quickly.
• Experience with workflow software: roles, approvals, queues, audit/history.
• React, TypeScript and SQL on Azure including schema design and migrations.
• Daily use of AI coding tools with tests and CI in production.
• Clear written and spoken English.
• Experience delivering in fixed-scope sprints with branches and feature flags.

Responsabilidades

• Join the team building workflow features for a live client product.
• The server side spans from Azure SQL up through the API, plus React/TypeScript screens.
• You direct AI-generated specs, tests and migrations and review diffs for merges.
• You own one area end to end (e.g., task engine or legacy migrations) without breaking live features.
• You report to leadership and align with the lead developer and product manager.

Conocimientos

Full-stack web

React

TypeScript

SQL on Azure

AI coding tools

English communication

Fixed-scope sprints

Herramientas

Cursor

Claude Code

Azure SQL

Descripción del empleo

Our client is a remote product studio that builds MVPs and custom software for startups and companies past the idea stage. Clients hire them for a fixed-scope MVP or for a product team billed by the two-week sprint, and the whole team uses AI coding tools every day.

They've been at it since 2020 and were profitable in 2025, with a 30% net margin. After building their own AI systems, they tripled monthly revenue with the same team size. Clients rate them 4.9 out of 5 in verified reviews, and the startups they build for have raised more than $25M in venture funding.

Your Role

You'll join the team building workflow software for one of the studio's clients: a live product that needs new workflow features while the existing ones keep running. The client's own engineers commit to the same repo, so every new table, permission and workflow goes in next to code someone else is changing. The weight is on the server side, from the SQL database on Azure up through the API, and you also build the React and TypeScript screens that sit on top.

AI coding tools draft most of the specs, tests and migrations. You direct them, read every diff line by line, and answer for what merges. If you'd rather write most of the code by hand, this probably isn't the right seat.

You report to the studio's leadership and work day to day with the lead developer and the product manager, who sets the acceptance criteria for each sprint. Success means delivering four to five features per two-week sprint, each verified before merge, and owning one area end to end (such as the task engine or the legacy migration) without breaking a live feature.

You Bring:

• 4+ years building full-stack web applications and releasing them to production
• Experience working in a codebase you didn't write, learning its conventions before changing it
• Hands-on work on workflow software where different user roles see different data, with approvals, task queues or state machines and an audit log or versioned history
• React, TypeScript and SQL on Azure, including schema design and migrations
• Daily use of Cursor, Claude Code or a similar AI coding tool on production work, with tests and CI behind it
• Clear written and spoken English
• Experience delivering in fixed-scope sprints with branches, code review and feature flags

Bonus Points:

• Work in a regulated setting such as finance, health or insurance
• A migration from a legacy system, with reconciliation and duplicate review
• Time as an outside vendor committing to a client's repo
• Project rules, custom prompts or agent setups for AI coding tools that your team adopted
• Spanish, since the platform is bilingual

What's Offered:

• Fully remote contractor role from LATAM, full time at about 40 hours a week
• Core hours in US time zones, so your day overlaps with the lead developer and the product manager
• An area of the product to own end to end, with your schema designs reviewed by the lead developer and the client's engineers
• A team where AI-first delivery is already the daily routine, with tests, CI and feature flags as part of the normal process
• A start in early November

Interview Process:

1. Intro Call: 30 minutes with atomic HR on your background and goals
2. Leadership Screening: A short call, possibly with an async part first
3. Product and Developer Conversation: How you take features from acceptance criteria to merge
4. Take-Home Test: One feature like the real scope, built and checked