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

Quick Facts

• Role: Senior Platform Engineer

Description

Design and build the API and Gateway layer that unifies a 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

• Supportive team and agile, startup-like culture; hybrid-by-design mode with opportunity to work remotely within Poland

• Opportunity to work abroad for up to 60 days annually and business-driven relocation opportunities

• Career development programs, thought leadership, mentoring, soft skills and well-being programs

• Certification support (Anthropic, Gemini, GCP, Azure, AWS)

• English classes

• 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

• Open to working with contractors (B2B terms agreed individually)