Software Engineer Iii - Full Stack, Research Technology

Jpmorganchase; Buenos Aires; Presencial; ARS 2.000.000 - 4.500.000; Jornada completa

Descripción de la vacante

AgileEngine is seeking a Senior Full Stack Developer to build and maintain backend services and frontend interfaces for a large-scale analytics platform. You will implement REST APIs in Python, develop React/TypeScript frontends, manage PostgreSQL schemas, and leverage AI-assisted tools with a critical eye toward maintainability.

The role requires ownership of problem definition, gathering context, and shaping practical solutions in an ad hoc environment.

Formación

• Senior full-stack experience with end-to-end software delivery.
• Strong Python (FastAPI or Flask) and TypeScript/React skills.
• Experience with PostgreSQL and migrations.
• Experience building REST APIs and handling data-heavy apps.
• Familiarity with AI-assisted development tools and evaluation of outputs.
• Comfort operating in Mac/Linux terminal environments.

Responsabilidades

• - Build and maintain scalable backend services (REST APIs) and responsive frontend interfaces (React/TypeScript).
• - Surface, validate, and resolve issues from data sources like ETL pipelines and data lakes.
• - Package and manage applications using Docker.
• - Use AI-assisted tools (e.g., Claude Code) with critical judgment for long-term maintainability.
• - Collaborate with engineers to clarify requirements and avoid short-term fixes.
• - Work daily with the team via Slack and Google Meet.

Conocimientos

Full-stack development

Python

TypeScript/React

REST APIs

Data-heavy applications

AI-assisted development tools

Mac/Linux terminal (Bash)

Soft skills

Ambiguity tolerance

Herramientas

Docker

Claude Code

Descripción del empleo

AgileEngine is an Inc. 5000 company that creates award-winning software for Fortune 500 brands and trailblazing startups across 17+ industries. We rank among the leaders in areas like application development and AI/ML, and our people-first culture has earned us multiple Best Place to Work awards.

WHY JOIN US

If you're looking for a place to grow, make an impact, and work with people who care, we'd love to meet you!

ABOUT THE ROLE

We are looking for a Senior Full Stack Developer to build and maintain backend services and frontend interfaces that surface, validate, and resolve issues in data coming from ETL pipelines, data lake outputs, and ML model results for a large-scale marketing analytics platform. You will develop REST APIs in Python using FastAPI or Flask, build responsive React and TypeScript frontends, manage PostgreSQL schemas and migrations, and leverage AI-assisted development tools with the critical judgment to push back on shortcuts that compromise long-term maintainability. You will work in an environment where requirements are often ad hoc and underspecified, taking ownership of defining the problem, gathering context, identifying constraints, and shaping practical solutions before implementation.

WHAT YOU WILL DO

- Build and maintain scalable backend services (REST APIs) and responsive frontend interfaces (React/TypeScript).

- Build the interfaces and services that surface, validate, and resolve issues in data coming from the data lake, ETL pipelines, health-check logic, or model outputs — without necessarily owning pipeline architecture.

- Package and manage applications using Docker.

- Use AI-assisted development tools (e.g., Claude Code) to move fast during implementation — while critically evaluating AI-generated output and pushing back when it isn't the right long-term solution.

- Drive conversations directly with engineers to clarify both functional and non-functional requirements, rather than defaulting to whatever "just works" in the short term.

- Work daily alongside engineers over Slack and Google Meet.

MUST HAVES

- 5–7 years of full-stack software development experience .

- Strong proficiency in Python (FastAPI or Flask) and TypeScript/React .

- Solid understanding of relational databases (PostgreSQL) and database migrations .

- Comfortable with REST APIs ; able to work with and migrate away from legacy GraphQL where needed.

- Demonstrated experience building or maintaining data-heavy applications (large datasets, performance-sensitive queries at the application layer).

- Practical, hands-on use of AI-assisted development tools , paired with the critical judgment to challenge AI output when it compromises long-term maintainability.

- High comfort level working entirely in a Mac/Linux terminal environment (Bash, Makefiles).

- Strong soft skills (mandatory, not a bonus) : the ability to hold and defend a technical opinion — challenging a stakeholder's or a tool's proposed "quick fix" with sound reasoning in pursuit of a solution that scales and is maintainable long-term, while still being pragmatic enough to ship.

- Comfort with ambiguity (mandatory) : work is frequently ad hoc and underspecified. This role requires defining the problem — gathering context, identifying constraints, and framing the work — before solving it, rather than waiting for a specification. Experience limited to well-specified work executed through agent workflows is not a fit.

NICE TO HAVES

- Exposure to object-storage-backed data lakes and serverless query engines (S3 + Athena, or comparable — Trino/Pre