Senior Backend Engineer - AI/LLM Systems
P
PubNubReal-time Experiences
Remote-first within PolandFull-TimeSenior
Salary26000 - 35000 PLN per month
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Job Details
- Languages
- English
- Required Skills
- PythonTypeScriptAzureRust
Requirements
- Open to learning TypeScript, Python, or Rust
- Experience shipping a production AI feature
- Clear communication in English
Responsibilities
- Ship AI-powered features into production
- Integrate LLM inference, build evaluation and observability tooling, and own the full lifecycle of AI services
- Work with providers like OpenAI, AWS Bedrock, Azure, or open-source models
- Design low-latency inference pipelines for high-throughput message streams
- Implement model routing, prompt and retrieval patterns (RAG), caching, batching, and fallbacks
- Solve real-world constraints around latency, scale, and cost
- Build internal frameworks, APIs/SDKs, and tooling for other teams
- Partner with product and engineering on trade-offs between latency, cost, accuracy, and privacy
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