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PubNub

Powering realtime applications that transform products, industries, and human experiences.

Senior Backend Engineer – AI/LLM Systems

Backend EngineerSoftware EngineerFull TimeRemoteSeniorTeam 51-200H1B SponsorCompany SiteLinkedIn

Location

Poland

Posted

93 days ago

Salary

zł26K - zł35K / month

Seniority

Senior

Job Description

Senior Backend Engineer – AI/LLM Systems

PubNub

• Ship AI-powered features into production • Integrate LLM inference, build evaluation and observability tooling • Own the full lifecycle of AI services • Design low-latency inference pipelines for high-throughput message streams • Implement model routing, prompt and retrieval patterns (RAG), caching, batching, and fallbacks • Build internal frameworks, APIs/SDKs, and tooling

Job Requirements

  • Work mainly with TypeScript, Python, or Rust
  • Use modern AI-assisted tools (Copilot, Cursor, Claude, etc.)
  • Communicate clearly in English

Benefits

  • Competitive monthly compensation: 26,000 – 35,000 PLN + VAT
  • Remote-first within Poland
  • Flexible time management focused on outcomes
  • Access to modern tools and infrastructure required to perform the role effectively
  • Equity participation opportunity
  • Optional access to our centrally located Katowice office

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