Full Stack Engineer
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Job Description
Full Stack Engineer designing and developing AI workflows and systems for Darkroom's marketing solutions. Collaborating with cross-functional teams to ensure reliability and performance.
Responsibilities:
- Own full-stack features end-to-end — from database models and APIs to frontend integration and UX correctness.
- Design and extend backend systems that power complex agent orchestration — subagents, skills, knowledge base retrieval, parallel execution, and long-running workflows.
- Build and evolve REST APIs that are stable, well-typed, and easy for the frontend and agents to consume.
- Integrate and debug LLM-powered workflows — prompts, tools, retrieval, evaluation loops — with a strong focus on reliability and observability.
- Ensure frontend and backend systems interoperate cleanly: tight contracts, predictable data flow, and minimal friction.
- Improve performance, resilience, and security across the stack as usage and complexity grow.
- Use coding agents (Claude Code, Cursor, etc.) as force multipliers to move faster and push quality higher.
- Collaborate closely with product and design to turn ambiguous ideas into shipped, production-grade features.
- Raise the technical bar through thoughtful code reviews, architectural discussions, and mentorship of junior engineers.
Requirements:
- 5+ years of professional software engineering experience with end-to-end ownership in a full-stack role.
- Strong hands-on experience with Python and/or Node.js on the backend and React + TypeScript on the frontend.
- Deep understanding of front-end state management — how to structure, scope, and evolve state as complexity grows. Familiarity with patterns like React Query / TanStack Query for server state.
- Experience designing and working with relational data models (PostgreSQL).
- Comfort operating in a cloud environment (GCP or similar) and deploying containerized services (Docker; Kubernetes familiarity a plus).
- Proven experience integrating AI/ML systems into production products — especially LLMs, retrieval-augmented workflows, or agentic systems.
- Strong product instincts: you think about UX, performance, and correctness, not just implementation.
- Ability to reason about complex systems and make them simpler, more reliable, and easier to work with.
Benefits:
- Unlimited Vacation & 10 Paid Holidays
- Remote-First Culture with hubs in NY, SF, Lisbon, São Paulo, Barcelona & more
- Comprehensive Medical, Dental & Vision Benefits
- 401(k) with Company Match, Equity, and Profit Sharing
- Parental Leave & Wellness Stipends
- Cross-functional learning opportunities across the entire Darkroom ecosystem
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