Senior Platform Engineer (API & Gateway - Data & AI Platform)

We are seeking a Senior Platform Engineer to design and build the API and Gateway layer that unifies our Data & AI Platform, transforming a fragmented service landscape into one coherent, secure, and observable product.

Responsibilities

• Design and build APIs and SDKs on top of distributed platform services using Python/FastAPI
• Define REST/async API design standards, versioning strategies, and contract testing practices
• Develop client libraries that provide consistent, reliable access to platform services
• Architect and maintain a gateway layer that fronts platform services and removes direct fragmented access
• Establish orchestration and routing patterns that converge independent services into one cohesive product
• Implement RBAC/ABAC least-privilege authorization models at the gateway level
• Manage identity and token flows, including managed/workload identity and delegation, to keep downstream services simple
• Build and maintain CI/CD pipelines using Azure DevOps or GitHub Actions with a test-first delivery approach
• Produce clear service contracts and documentation to support platform adoption
• Integrate services across Azure and GCP, leveraging private endpoints for secure service-to-service communication
• Implement observability practices using OpenTelemetry, Prometheus, Loki, Tempo, and Grafana to ensure end-to-end visibility
• Use metrics, traces, and logs to debug and tune performance in production environments

Requirements

• 5+ years of experience in platform or software engineering, with expert-level proficiency in Python
• Hands-on experience building APIs and SDKs on top of distributed services, including client libraries
• Proficiency in FastAPI, REST/async design, API versioning, and contract testing
• Expertise in designing gateway architectures, including orchestration, API integration, and consistent routing
• Knowledge of IAM concepts including RBAC/ABAC least-privilege models, managed/workload identity, and token delegation flows
• Hands-on experience with Azure and GCP, including private endpoints and multi-cloud service-to-service integration
• Skills in CI/CD and automation using Azure DevOps or GitHub Actions
• Familiarity with observability tooling such as OpenTelemetry, Prometheus, Loki, Tempo, and Grafana
• Ability to translate a fragmented service landscape into one coherent, unified product
• English proficiency at B2 level or higher

Benefits

We gather like-minded people:

• Top tech minds driving innovation in AI, cloud and digital platform modernization
• Supportive team and agile, startup-like culture
• Hybrid by design mode and opportunity to work remotely within Poland
• Chance to work abroad for up to 60 days annually
• Business-driven relocation opportunities

We provide growth opportunities:

• Career development programs
• Thought leadership, mentoring, soft skills and well-being programs
• Certification (Anthropic, Gemini, GCP, Azure, AWS)
• English classes

We cover it all:

• Stable pay
• Participation in the Employee Stock Purchase Plan with a 15% discount
• Benefits package (health insurance, multisport, shopping vouchers)
• Referral bonuses up to $2,000
• Offices featuring entertainment and relaxation zones, table tennis and football, free snacks, coffee and more
• Corporate, social and well-being events

Please, note:

• Benefits listed above are available to employees only
• We are open for working with Contractors. Terms of B2B cooperation agreements are agreed individually
• We will reach out to selected candidates exclusively