Senior Backend Engineer: Remote-First AI Platform

Re:Build Manufacturing; Boston, Los Angeles, Seattle (MA, CA, WA); Hybrid; USD 165,000 - 200,000; Full time

Benefits offered by this job

Health/dental/vision

401K

Paid time off

Learning stipend

Equity opportunities

Job summary

Re:Build Manufacturing is seeking a senior backend engineer to build core services and AI infrastructure powering an AI-driven hardware platform. You will design REST APIs, data pipelines, and agent workflows while collaborating with AI researchers and product leaders.

The role emphasizes Python, FastAPI, PostgreSQL, Celery, and cloud deployments on GCP, with remote-first work and a preference for Boston-area candidates.

Qualifications

• 5+ years building production backend systems, with 3+ years in Python.
• Demonstrated proficiency using AI coding tools (Cursor, Copilot, Claude, etc.) to accelerate development.
• 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.

Responsibilities

• Designing and implementing RESTful APIs with OpenAPI specs and auto-generated client SDKs using SQLAlchemy and Postgres
• Developing ingestion pipelines using Celery and Redis that connect to tools teams already use and extract structured engineering artifacts
• Building and extending agentic AI workflows using LangChain, LangGraph, and related frameworks for structured data extraction, risk detection, dependency analysis, and proactive team coordination
• Integrating LLM APIs (Anthropic Claude, OpenRouter) with streaming (SSE), error handling, and cost optimization
• Deploying and operating services on GCP (Cloud Run, Cloud SQL, Memorystore) with Terraform
• Writing well-tested, maintainable code and participating in code reviews to establish engineering best practices

Skills

Python

FastAPI

PostgreSQL

SQLAlchemy

Celery

Redis

LangChain

LangGraph

OpenAI Claude

OpenRouter

API Design

Docker

Terraform

Tools

OpenAPI

PostgreSQL

SQLAlchemy

Celery

Redis

Git

Docker

Terraform

Cloud Run

Cloud SQL

Job description

Re:Build Manufacturing is seeking a senior backend engineer to build core services and AI infrastructure powering an AI-driven hardware platform. You will design REST APIs, data pipelines, and agent workflows while collaborating with AI researchers and product leaders.

The role emphasizes Python, FastAPI, PostgreSQL, Celery, and cloud deployments on GCP, with remote-first work and a preference for Boston-area candidates.