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Full-Stack Engineer

Darkroom

Responsibilities

  • Architect and implement full‑stack features, from database schema to React components, optimized for scale and reliability.
  • Build and maintain RESTful/GraphQL APIs, data pipelines, and distributed services in GCP.
  • Integrate, prompt, and debug LLMs and generative AI tools; own RAG or fine‑tuning pipelines.
  • Ensure front‑end and back‑end systems interoperate flawlessly, minimize friction, optimize data flow, and enforce contracts.
  • Collaborate with product, research, design, and infra teams to define requirements, iterate rapidly, and ship production‑grade code.
  • Monitor performance, reliability, and security.
  • Mentor junior engineers through code reviews, architecture reviews, and shared best practices.

Requirements

  • 5+ years of professional software engineering experience with end‑to‑end ownership in a full‑stack role.
  • Deep expertise in Python, Node.js, React/TypeScript, and PostgreSQL.
  • Able to be hands‑on with GCP, containerization (Docker/K8s), and building/supporting high‑traffic systems.
  • Familiarity or strong interest in working with MCP servers.
  • Exceptional problem‑solving skills and a product mindset: you think deeply about UX, performance, and business impact.
  • You sweat both technical details and end-user experience.

Preferred

  • Experience with multi‑step or agentic AI workflows.
  • Background in AI infrastructure or tooling companies.
  • Contributions to open‑source AI/ML projects.

The role

You'll sit squarely at the intersection of back‑end and front‑end, ensuring seamless integration between APIs, databases, UIs, and ML services. You'll design, build, and scale features end‑to‑end, especially our AI/ML‑powered experiences, while mentoring peers and driving architecture decisions.

Core Tech & Tools

Datastore

PostgreSQL

Cloud & Infra

Google Cloud Platform, Airflow, Terraform, Docker, Kubernetes

ML/AI

LLMs, RAG, prompt engineering

Must haves

Proven experience integrating AI/ML models (LLMs, NLP, RAG) into production apps.

What we offer

Unlimited PTO + Local holidays (Relevant to your hub)

Rebooting is part of the work. Take the time you need to stay sharp.

Remote-First Culture

Many roles are fully remote. Employees based in or near our New York or Lisbon HQs are expected to work hybrid with weekly in-office time. Hub locations include Brazil and Spain.

Parental Leave

Flexible parental leave to support new parents during this important transition.

Growth

Our interdisciplinary model gives every employee exposure far beyond their core role. Grow your skills, expand your influence, and stay at the forefront of the industry.

Equal Opportunity Statement

We are an equal opportunity workplace—we are dedicated to equal employment opportunities regardless of race, color, ancestry, religion, sex, national orientation, sexual orientation, age, citizenship, marital status, disability, gender identity, or Veteran status. We also consider qualified applicants regardless of criminal histories, consistent with legal requirements.