Senior DevOps Engineer (AWS Platform & Backend Support)

🌐 We are on the mission to build Europe’s leading energy management platform **to provide fair, clean energy to everyone.** ⚡ We’re a diverse team of **50+ employees**, with **46% being female** and from **16+ nationalities**, and steadily growing. Having **raised of over €40 M** in total, we are looking for passionate people to join us on our mission! 🚀 🇩🇪 Wir haben eine klare Mission: Wir bauen Europas führende Plattform für Energiemanagement, um **faire und saubere Energie für alle** zugänglich zu machen. ⚡ Unser Team ist vielfältig – wir sind über **50 Personen** aus mehr als **16 Nationalitäten**, mit einem **Frauenanteil von 46 %**. Und wir wachsen weiter! Mit über **40 Mio. € an Finanzierung** suchen wir nach motivierten Menschen, die gemeinsam mit uns die Energiezukunft gestalten wollen. 🚀 ## **About the Role** We are looking for a Senior DevOps Engineer to take ownership of our cloud infrastructure and help evolve a modern AWS-based platform. You will work on reliability, observability, automation, security, and CI/CD — and occasionally support backend engineers with troubleshooting or small contributions to our backend services. This role is ideal for someone who enjoys building scalable systems, improving developer workflows, and driving technical excellence across a growing engineering team. # **What You Will Do** - Own and improve AWS infrastructure across staging and production environments. - Build, maintain, and standardize Infrastructure-as-Code using **Terraform**. - Manage and optimize containerized workloads on **ECS Fargate**. - Strengthen observability: metrics, dashboards, alerting, and logging. - Improve CI/CD pipelines using **GitHub Actions**. - Enhance IAM, secrets management, and overall cloud security posture. - Perform maintenance of databases running on RDS (Postgres, MySQL). - Support backend teams with debugging, migrations, or small changes in **Node.js/NestJS** when needed. - Drive automation, reliability, and scalability across the platform. # **What We’re Looking For** ## **Core Technical Skills** - **AWS Expertise**, including but not limited to: - VPC (subnets, routing, NAT gateways, ALBs, security groups) - Route53 - ECS (Fargate) - Lambda - RDS (MySQL/Postgres) - SQS/SNS - CloudWatch - S3 - Strong experience with **Terraform**. - Deep understanding of **AWS networking** and secure infrastructure design. - Experience operating **RDS** (backups, upgrades, failovers, troubleshooting). - Hands-on CloudWatch experience (metrics, dashboards, Logs Insights, alarms). - Good understanding of **event-driven systems** (SQS, SNS, Lambda triggers, retries, DLQs). - Strong proficiency with **Docker** and containerized deployments. - Experience with **GitHub Actions** and modern CI/CD workflows. - Programming skills in **Python or Golang**. - Working knowledge of **Node.js/NestJS** to support backend engineers occasionally. ## **Additional Desired Experience** - Experience with **Docker image hardening** and optimization (multi-stage builds, non-root users). - Familiarity with **API gateways** or automating **OpenAPI** specifications. - Experience integrating **SSO/SAML/OIDC** for cloud and internal tools. - Experience with **KMS** (nice to have). - Experience improving **secrets management**. - Experience building **reusable CI/CD components** (custom GitHub Actions). - Experience setting up a **monitoring** stack. - Familiarity with secure file transfer mechanisms (**SFTP/SSH key setups**). - Experience with **distributed backend architectures** (microservices, event-driven, multi-service systems). # **Who You Are** - Have 5+ years of experience as a DevOps Engineer. - You take ownership and think long-term. - You are systematic, structured, and pragmatic. - You communicate clearly and proactively. - You collaborate easily with backend engineers and product teams. - You bring calmness and maturity during incidents and debugging. - You are able to quickly learn new technologies and apply them t…