Senior AI Platform Engineer — End-to-End Ownership

ABC Fitness; Polska; On-site; PLN 280,000 - 305,000; Full time

Benefits offered by this job

Medical/Dental/Vision coverage

Parental & Pawternity Leave

Open PTO policy

Fitness reimbursement

Discounts with partners

Calm App subscription

Job summary

ABC Fitness is building an intelligent AI Platform in Poland, empowering engineers to design, deploy, and operate AI-powered experiences. You will own platform deliverables end to end, from problem definition to production ownership, with clear SLOs and measurable outcomes.

The role emphasizes security, observability, and reliable operations across teams. You will collaborate with Engineering, Product, Security, Infrastructure, SRE, and Developer Experience to create reusable patterns and ensure

Qualifications

• Experience building or operating production retrieval systems, agent platforms, AI tooling, or other AI-enabled capabilities.
• Strong software engineering experience designing and operating distributed systems within an existing architecture.
• Practical understanding of AI system quality, including retrieval evaluation, answer quality, release gates, agent reliability, and cost per request.

Responsibilities

• Own an AI platform deliverable from problem definition through production launch, adoption, and ongoing operation.
• Design, build, and operate platform capabilities such as LLM gateways, retrieval systems, agents, developer tooling, evaluation frameworks, and inline guardrails.
• Define success criteria and measurable outcomes before building, then use production data and baseline metrics to guide future improvements.
• Design systems with clear SLOs, strong observability, predictable failure handling, and reliable operational processes.
• Develop and maintain clean interfaces, migration paths, documentation, and paved paths that make platform adoption simple for engineering teams.
• Build retrieval and agent systems with a clear separation between retrieval quality and answer quality, supported by meaningful evaluation strategies.
• Design for secure and controlled AI execution, including least-privilege access, multi-tenant isolation, permissioning, auditability, and operational boundaries.
• Apply strong distributed systems principles, including consistency, idempotency, concurrency, resilience, rollout strategies, and failure-mode analysis.
• Use coding agents and other AI development tools effectively while validating their output through testing, review, and sound engineering judgment.
• Carry operational ownership for the systems you build, including participation in an on-call rotation, incident response, and post-incident improvement.
• Partner closely with Engineering, Product, Security, Infrastructure, SRE, and Developer Experience teams to ensure platform capabilities are practical, scalable, and widely adopted.
• Establish and communicate reusable technical patterns, standards, and reference implementations for building production-ready AI systems.

Skills

AI/Platform engineering

Distributed systems

Retrieval systems

On-call / incident response

Code reviews

Security best practices

LLM gateways

OpenTelemetry

Tools

LLM gateways

OpenTelemetry

Job description

ABC Fitness is building an intelligent AI Platform in Poland, empowering engineers to design, deploy, and operate AI-powered experiences. You will own platform deliverables end to end, from problem definition to production ownership, with clear SLOs and measurable outcomes.

The role emphasizes security, observability, and reliable operations across teams. You will collaborate with Engineering, Product, Security, Infrastructure, SRE, and Developer Experience to create reusable patterns and ensure