Senior DevOps Engineer (AWS Platform & Backend Support)
Role details
Job location
Tech stack
Job description
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.
Requirements
Do you have experience in Terraform?, + 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 AWS WAF or KMS (nice to have).
- Experience improving secrets management.
- Experience building reusable CI/CD components (custom GitHub Actions).
- Familiarity with secure file transfer mechanisms (SFTP/SSH key setups).
- Experience with distributed backend architectures (microservices, event-driven, multi-service systems)., * 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.
Benefits & conditions
How? Through variable tariffs, dynamic pricing, smart EV charging, heat pump and solar optimization, and Germany's first virtual power plant: NeoGrid.
At Ostrom, you'll work in a dynamic, open environment where you can be yourself, take on challenges, and grow both personally and professionally.
Environmental Impact: Each customer who switches to Ostrom on average helps offset 1.5 tons of CO2 emissions per year compared to the average German energy mix.
VSOP: On top of offering a competitive salary you will have access to company shares to ensure you can truly be part of the journey.
Relocation package: We won't let distance get in the way, we offer visa and relocation support.
Trust-based Team: A truly flat hierarchy and transparent company culture, where everyone's voice matters.
Benefits: An annual learning budget, company-pension scheme, company events, discounted gym membership, public transport ticket, e-bike or e-moped, Futurebens or monthly vouchers - the choice is yours.
