Staff Backend Engineer, Platform

Zeit AI (YC S24); Greater London; On-site; GBP 81,000 - 231,000; Full time

Benefits offered by this job

Relocation support

Office in Munich

Job summary

You will scale a multi-tenant Postgres under unpredictable load, manage the sandbox layer with Docker, and own connectivity into customer networks. Strong TypeScript and deep database knowledge are essential.

Qualifications

• Hands-on, production code experience required.
• Built and scaled multi-tenant data platforms in a B2B startup.
• Strong Postgres/database knowledge with practical optimisation.

Responsibilities

• Scale a multi-tenant Postgres under unpredictable load.
• Make agent-driven workloads survivable and scalable.
• Manage the sandbox layer with Docker containers and budgets.
• Own connectivity into customer networks (SOCKS5 over WebSockets).
• Scope architecture and build it.

Skills

TypeScript

PostgreSQL

Distributed systems

Docker

Networking VPN/Routing

English (C1)

Tools

Docker

Job description

• ZeitMind is an autonomous data engineer for mid-market businesses. Agents and people work the same company data: ingest, pipeline, clean, analyse, build operational apps
• we are growing fast and will be onboarding multiple enterprise customers a week. The backend isn't ready yet, your impact will decide the speed at which we can grow
• load growth is compounding: more customers, multiple users per customer, many agent interactions per user and multiple agent artifacts (data pipelines, schedules, analyses) coming out of the interactions
• you own the platform

Opportunity

• ZeitMind is an autonomous data engineer for mid-market businesses. Agents and people work the same company data: ingest, pipeline, clean, analyse, build operational apps
• we are growing fast and will be onboarding multiple enterprise customers a week. The backend isn't ready yet, your impact will decide the speed at which we can grow
• load growth is compounding: more customers, multiple users per customer, many agent interactions per user and multiple agent artifacts (data pipelines, schedules, analyses) coming out of the interactions
• you own the platform

What You'll Do

• scale a multi-tenant Postgres under unpredictable load: query and I/O optimisation, read/write separation, horizontal scaling
• make agent-driven workloads survivable: one user can spin up 30 table syncs, some running hours, while others query large sources
• manage the sandbox layer: Docker containers where agents run queries and reverse-engineer files, with compute and memory budgets
• own connectivity into customer networks: SOCKS5 over WebSockets, authentication, routing
• scope the architecture and build it

What We're Looking For

• staff or principal level, still hands-on, writing production code
• built and scaled multi-tenant data platforms in a B2B startup or platform company before
• deep Postgres or database knowledge: query plans, locking, I/O, caching, replication, sharding
• understands startup pace and ownership without specs
• pragmatic over ideal, wants to build foundations right without overengineering
• strong TypeScript
• English C1, German a plus

Nice to have

• experience at a data platform or warehouse company (Snowflake, Databricks, Cloudflare or similar)
• networking depth: proxies, VPN, routing

Location

• preferred: Munich, on-site. We support relocation within Europe
• already in London? We can make that work. We have people here and are opening a small office, and we'd expect regular Munich travel. In-person culture is important to us

Tech stack

• TypeScript end to end. Bun, tRPC, Postgres, Supabase. React frontend (Mantine, TanStack Query). Docker, job/process management, VPN/routing, agentic frameworks

Compensation Range: €95K - €270K