Platform Engineer (m/f/d)

www.polarise.eu; Düsseldorf; On-site; EUR 90,000 - 130,000; Full time

Benefits offered by this job

Remote Work Model

Structured Onboarding

Room to Grow

Attractive Benefits

Job summary

Polarise is building a scalable cloud platform and API infrastructure in Germany. We seek an experienced Platform Engineer to develop and operate production-grade cloud and container platforms, ideally Kubernetes and Docker, and to drive automation with Terraform.

You will design API gateways, implement CI/CD pipelines, and improve developer experience with self-service platform services. Fluency in German and English is required, and a valid work permit in Germany is essential.

Qualifications

• Experience building and operating production-grade cloud and container platforms with Kubernetes and Docker.
• Proficiency with Infrastructure as Code, preferably Terraform, in modern cloud environments.
• Experience with API gateways and REST/gRPC/GraphQL/OpenAPI standards.
• Knowledge of OAuth2, OIDC, JWT, and mTLS for security.
• CI/CD tooling such as GitHub Actions, GitLab CI, or ArgoCD.
• Backend language experience in Go, Python, or Rust.
• Observability with Prometheus, Grafana, and OpenTelemetry.
• Familiarity with SRE concepts, availability, and performance optimization.
• Networking, load balancing, DNS, and modern security architectures.
• Fluent German and English; based in Germany with valid work permit.

Responsibilities

• Develop and operate production-grade cloud and container platforms (Kubernetes/Docker).
• Automate infrastructure and deployment; enable fast, secure platform delivery.
• Design and optimize cloud-native solutions including API gateways and security.
• Build CI/CD pipelines and GitOps workflows for a smooth software lifecycle.
• Develop platform tooling and internal services using Go, Python, or Rust.
• Own API infrastructure improvements, including authentication and authorization concepts.
• Ensure platform reliability, performance, and observability with monitoring and tracing.
• Collaborate with engineering teams to improve developer experience and self-service offerings.
• Contribute to security initiatives such as Zero Trust and secrets management.

Skills

Kubernetes

Docker

Terraform

API gateways

REST/gRPC/GraphQL/OpenAPI

OAuth2/OIDC/JWT/mTLS

CI/CD pipelines

Go/Python/Rust

Observability

SRE/availability/performance

Networking/DNS

German/English

Tools

GitHub Actions

GitLab CI

ArgoCD

Job description

Your mission

• You develop and operate our platforms for scalable APIs, creating the technical foundation for our product and engineering teams.
• You standardize and automate infrastructure, deployment, and operational processes, enabling teams to deliver software quickly, securely, and independently.
• You design, implement, and optimize cloud-native platform solutions based on Kubernetes, Docker, and Infrastructure as Code.
• You build and maintain modern CI/CD pipelines and GitOps workflows, ensuring a smooth software lifecycle.
• You develop platform tooling as well as internal services and APIs in Go, Python, or Rust.
• You take ownership of the further development of our API infrastructure, including API gateways, authentication, and authorization concepts.
• You ensure the reliability, performance, and scalability of our platform through monitoring, logging, tracing, and performance optimization.
• You work closely with our engineering teams and continuously improve the developer experience through standardized platform services and self-service offerings.
• You support the implementation of modern security concepts such as Zero Trust, secrets management, and network segmentation.

Your profile

• You have experience building and operating production-grade cloud and container platforms, ideally with Kubernetes and Docker.
• You are proficient in Infrastructure as Code, preferably with Terraform, and are comfortable working in modern cloud environments.
• You have experience with API gateways as well as common API standards and technologies such as REST, gRPC, GraphQL, and OpenAPI.
• You are familiar with modern authentication and security protocols such as OAuth2, OIDC, JWT, and mTLS.
• You have built and operated CI/CD pipelines and automation solutions using tools such as GitHub Actions, GitLab CI, or ArgoCD.
• You are proficient in at least one backend programming language such as Go, Python, or Rust and enjoy building your own platform solutions.
• You have experience with observability and work with monitoring, logging, and tracing solutions such as Prometheus, Grafana, and OpenTelemetry.
• Topics such as Site Reliability Engineering (SRE), availability, incident management, scalability, and performance optimization are part of your day-to-day practice.
• You have a solid understanding of networking, load balancing, DNS, and modern security architectures.
• You think from the perspective of your platform users and enjoy continuously improving.
• Excellent German and English language skills complete your profile.
• You are based in Germany and hold a valid work permit.

Why us?

• Meaningful Work: Help shape the story of one of Europe's most exciting AI infrastructure companies from the very beginning and contribute to strengthening Europe’s technological independence in AI.
• High Degree of Ownership: Work closely with senior leadership and actively shape the technical foundation of our platform. Your decisions will have a direct impact on scalability, reliability, and the developer experience across our teams.
• Strong Team: Become part of a growing, highly motivated engineering team and collaborate closely with experienced engineers and technical leaders.
• Remote Work Model: Work in a way that helps you truly balance your professional, family, and personal life.
• Thoughtful Onboarding: Look forward to a structured onboarding plan, a welcome package with company merchandise, and your preferred hardware setup (MacBook Pro or ThinkPad).
• Room to Grow: Actively shape your role and develop it in directions that match your strengths and interests, whether in platform architecture, cloud infrastructure, reliability engineering, or developer experience.
• Attractive Benefits: Benefit from attractive employee offers and exclusive discounts with numerous brands and providers, JobRad bicycle leasing, contributions to your company pension plan and Germany Ticket, as well as the opportunity to work temporarily from within the EU. And because we are a fast-growing scale-up, we continuously evolve and expand our benefits package.