Senior Backend Engineer
Re:Build ManufacturingBase Salary
$165k - $200k/yr
Responsibilities
- Design and implement RESTful APIs with OpenAPI specifications and auto-generated client SDKs using SQLAlchemy and PostgreSQL.
- Develop Celery and Redis ingestion pipelines that connect with file storage, messaging, and email tools and extract structured engineering artifacts.
- Build and extend agentic AI workflows for data extraction, risk detection, dependency analysis, and proactive team coordination.
- Integrate Anthropic Claude and OpenRouter LLM APIs with streaming, error handling, and cost optimization.
- Deploy and operate services on GCP using Cloud Run, Cloud SQL, Memorystore, and Terraform.
- Write tested, maintainable code, participate in code reviews, and help establish backend engineering practices.
Requirements
- 5+ years of experience building production backend systems, including 3+ years with Python.
- Demonstrated proficiency using AI coding tools such as Cursor, Copilot, or Claude.
- Strong experience with FastAPI or similar asynchronous Python web frameworks.
- Production PostgreSQL experience covering schema design, migrations, and query optimization.
- Hands-on experience with task queues and background processing such as Celery or Redis.
- Understanding of API design, OIDC/JWT authentication patterns, and service architecture.
- Experience with Docker-based deployments and CI/CD pipelines.
- Ability to balance rapid iteration with maintainable, well-tested code.
- Early-stage 0-to-1 startup experience is highly valuable.
- Experience integrating LLM APIs and building AI-powered features with LangChain, LangGraph, or similar frameworks is highly valuable.
- Experience with GCP services including Cloud Run, Cloud SQL, Pub/Sub, and Secret Manager, plus Terraform infrastructure-as-code experience, is highly valuable.
- Experience with data ingestion pipelines, ETL workflows, B2B SaaS platforms, project management tools, or workflow automation products is valuable.
- Understanding of hardware development, engineering workflows, or project management concepts is valuable.
- Candidates must be a U.S. citizen or national, U.S. permanent resident, or lawfully admitted refugee or asylee due to export control requirements.
Benefits
- Remote-first work arrangement, with preference for candidates near Boston, Seattle, Los Angeles, or other Re:Build office locations.
- Full health, dental, and vision coverage.
- Bonus program and generous 401(k).
- Paid time off and annual learning stipend.
- Participation in Re:Build’s LTIP equity program and potential founder equity in an independent spinout.
- Employees share company ownership and financial rewards.
Tech Stack
Categories
About Re:Build Manufacturing
Re:Build Manufacturing integrates design, engineering, and manufacturing to deliver complex, multi-technology products from concept through full-rate production. Our Manufacturability for Design™ approach embeds production constraints into early-stage development, eliminating the costly redesign cycles that plague fragmented development models. With 1,200+ employees and 400+ engineers operating across an integrated U.S.-based ecosystem, we combine advanced capabilities in a single system. We serve industries where both field performance and production economics are non-negotiable: aerospace and defense, electrification, energy, medical devices, and advanced automation. Re:Build reconnects engineering and manufacturing to restore competitive U.S. production capability for programs that require control, supply chain resilience, and technical accountability.