Senior Software Engineer, Engine & Distributed Systems
StackAI, Poland - Warsaw Office
The role
Enterprises run real work on AI agents, and at StackAI that work runs on a single engine. Some agents finish in a second. Others run for days, fan out into dozens of sub-agents, pause, resume, and recover from failures without losing a step. We're hiring a Senior Software Engineer, Engine & Distributed Systems to own that engine: the durable runtime at the core of the platform that has to be correct every time, at any scale.
This is deep systems work at the heart of the product. When the engine is solid, agents simply run — and getting it there is one of the more interesting distributed-systems problems in AI today. You'll own it end to end, from the execution model to how it behaves in production.
What you will do
- Own the execution engine. The runtime, scheduling, and sub-agent parallelization that run every agent on the platform.
- Make long-running work durable. Build checkpointing, resumption, and recovery so agents survive failures and restarts and pick up exactly where they left off.