Senior Backend Engineer
New
R
Re:BuildManufacturing / B2B SaaS
Remote-first, with preference for candidates in Boston, Seattle, Los Angeles, or other cities with Re:Build officesFull-TimeSenior
Salary$165,000 – $200,000 per year
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Job Details
- Experience
- 5+ years building production backend systems, with 3+ years in Python
- Required Skills
- PostgreSQLPythonGCPFastAPIRedisTerraformLangChain
Requirements
- 5+ years building production backend systems, with 3+ years in Python
- Demonstrated proficiency using AI coding tools (Cursor, Copilot, Claude, etc.)
- Strong experience with FastAPI or similar async Python web frameworks
- Production experience with PostgreSQL, including schema design, migrations, and query optimization
- Hands-on experience with task queues and background processing (Celery, Redis, or similar)
- Understanding of API design, authentication patterns (OIDC/JWT), and service architecture
- Experience with containerized deployments (Docker) and CI/CD pipelines
- Ability to balance rapid iteration with maintainable, well-tested code
- Experience with GCP services and Infrastructure-as-code (Terraform) preferred
- Experience with LLM API integration and AI agent orchestration frameworks preferred
Responsibilities
- Design and implement RESTful APIs with OpenAPI specs and auto-generated client SDKs using SQLAlchemy and Postgres
- Develop ingestion pipelines using Celery and Redis to extract structured engineering artifacts from unstructured inputs
- Build and extend agentic AI workflows using LangChain, LangGraph, and related frameworks for structured data extraction and proactive coordination
- Integrate LLM APIs with streaming (SSE), error handling, and cost optimization
- Deploy and operate services on GCP using Terraform
- Write well-tested, maintainable code and participate in code reviews to establish engineering best practices
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