Senior DevOps Engineer (AWS Platform & Backend Support)
Ostrom
| Company | Ostrom |
| Category | Engineering |
| Location | Berlin |
| Remote | Remote |
| Employment | Not stated |
| Level | Senior |
| Salary | Not stated by the employer |
| Posted | 17 Jul 2026 |
| Last verified | 30 Jul 2026 |
| Source | Employer career page (ashby) |
Description
🌐 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 Typescript, Python or Golang.
- Experience setting up a monitoring stack.
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 improving secrets management.
- 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 to solve problems.
🌐 ABOUT US
We’re Germany’s fastest-growing digital green energy provider and a Certified B Corp™ , driving the energy tra