Senior Backend Engineer

Role Overview

• Design, build, and maintain scalable async backend services and APIs in Python.
• Own core systems end-to-end: architecture, implementation, testing, deployment, and operational excellence.
• Build systems for multi-tenant workflows, fine-grained permissions, integrations, and agent-driven product experiences.
• Write and review database migrations and row-level security policies in a compliance-sensitive environment.
• Improve reliability, observability, and performance across critical paths.
• Collaborate closely with product, design, and research to translate user needs into robust backend architecture.
• Contribute to engineering standards, code review culture, and team ways of working.
• Help shape technical direction in a fast-moving environment with evolving product requirements.

Requirements

• 5+ years of professional software engineering experience with substantial backend development experience.
• Strong production experience building backend services in Python.
• Strong experience with asynchronous programming in Python, such as asyncio, async database access, or high-concurrency service development.
• Deep PostgreSQL experience, including schema design, query tuning, transactions, and production migrations.
• Experience designing or implementing multi-tenant data isolation and access control.
• Strong software design fundamentals: modular architecture, testing discipline, maintainability, and clear interface design.
• Experience with Redis or similar infrastructure for caching, queues, rate limiting, or pub/sub.
• Ability to independently own projects and make sound technical tradeoffs in ambiguous environments.
• Strong communication skills and a collaborative, low-ego working style.
• Strongly preferred: Experience with FastAPI, Starlette, Litestar, or another modern Python web framework.
• Experience building backend systems for AI products, agentic workflows, or LLM-powered applications, such as RAG pipelines, tool-calling agents, or orchestration layers.
• Experience with security-sensitive or enterprise systems, including access controls, audit logging, and compliance-driven engineering constraints.
• Experience with OpenTelemetry or comparable production observability tooling.
• Nice to have: Experience with pgvector, SurrealDB, or other vector retrieval systems.
• Exposure to SOC 2, fintech, healthtech, or other regulated environments.
• Experience with agent runtimes, sandboxing, or MCP integrations.
• Familiarity with distributed systems, asynchronous processing, and performance optimization.
• Startup or zero-to-one experience.
• Comfort reading TypeScript or React during frontend-backend integration work.

Tech Stack

• Distributed Systems
• Postgres
• Python
• React
• Redis
• TypeScript

Benefits

• Work on technically challenging products at the intersection of AI, security, and enterprise software.
• Join a small, senior team with deep experience in research, distributed systems, and production engineering.
• Have meaningful influence over architecture, product direction, and engineering culture.
• Build products with real-world impact, not just prototypes.