Platform Engineer w Kraków, Polska

We are looking for a passionate Platform Engineer with a strong focus on building technical platforms and shared infrastructure used across multiple engineering teams.
You will join a high-performing platform engineering team responsible for foundational systems including internal libraries, shared backend services, CI/CD pipelines, developer tooling, and observability.

This role involves significant ownership and collaboration, with a focus on improving engineering velocity, reliability, and scalability across the organization. You will build scalable cloud-native platforms using technologies such as TypeScript, https://jobeax.com/link/JSd7UYCSg572jJDY, NestJS, Kubernetes, Terraform, GitHub Actions, and AWS. You’ll collaborate with distributed cross-functional teams to deliver reliable and maintainable solutions.

Responsibilities:

• Scope and ownership increase with seniority.
• Build and maintain shared libraries and SDKs for areas such as authentication, logging, configuration, API clients, and error handling.
• Develop and support shared backend services and internal APIs.
• Improve developer experience through service templates, scaffolding, and local development tooling.
• Design and maintain CI/CD workflows with a focus on reliability, security, and speed.
• Build and maintain observability tooling including metrics, logging, tracing, dashboards, and alerting.
• Collaborate with product engineering teams to troubleshoot complex issues, support integrations, and review technical designs.
• Participate in on-call rotations and incident response.

Core Requirements:

• 4+ years of experience building backend services using TypeScript and https://jobeax.com/link/JSd7UYCSg572jJDY , ideally with NestJS in production environments.
• Strong software engineering fundamentals including understanding of CPU, memory, I/O, concurrency, and performance bottlenecks.
• Experience using AI-assisted developer tools effectively while maintaining strong engineering judgment.
• Working knowledge of PostgreSQL including schema design, migrations, and query analysis.
• Familiarity with AWS services such as DynamoDB, SQS, Kinesis, and Lambda.
• Experience working with CI/CD pipelines, including troubleshooting and release workflows.
• Experience with observability platforms such as Prometheus, Grafana, OpenTelemetry, Datadog, or similar.
• Ability to learn new tools, technologies, and domains quickly.
• Commitment to writing maintainable, reusable, and high-quality code.

Senior-Level Expectations:

• Additional backend/platform engineering experience with ownership of systems in production environments.
• Experience with PostgreSQL performance tuning including indexing strategies, query plans, and migration management.
• Experience designing and implementing CI/CD strategies including release flows, artifact promotion, and security considerations.
• Experience building observability practices including SLIs/SLOs , dashboards, and alerting systems.
• Ability to lead technical discussions, mentor engineers, and influence engineering standards across teams.

Soft Skills:

• Strong sense of ownership and accountability.
• Excellent communication and collaboration skills.
• Ability to work effectively with globally distributed teams.
• Strong attention to detail and commitment to quality.
• Strong problem-solving abilities and customer-focused thinking.
• Comfortable working in fast-paced environments with multiple stakeholders and time zones.