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! 🚀
🏢 About Ostrom
We’re Germany’s fastest-growing digital green energy provider and a Certified B Corp™ , driving the energy transition by making renewable energy more accessible and inclusive. 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.
🎯 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.
✅ Key Responsibilities
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.
📌 Required Qualifications
Have 5+ years of experience as a DevOps Engineer.
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.
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.
⭐ Desirable 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).
🎁 Benefits
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.
On top of offering a competitive salary you will have access to company shares to ensure you can truly be part of the journey.
A truly flat hierarchy and transparent company culture, where everyone’s voice matters.
An annual learning budget, company-pension scheme, company events, discounted USC membership, discounted BVG public transport ticket, e-bike or e-moped, exclusive discounts via FutureBens or monthly vouchers - the choice is yours.
We believe in transparent communication — from weekly town halls and quarterly updates to regular retrospectives. Got feedback or an idea? We’re all ears.
We thrive on collaboration. Wins are shared and so are the celebrations from monthly happy hours to team trips and company events.
Work Your Way: Whether you prefer the office, your home desk, or a sunny spot in Sardinia — you work where you work best.
Learn By Doing: We grow together with personal development paths, learning budgets, and regular knowledge-sharing sessions. Try things out, learn along the way, and keep moving forward.
🛂 Visa & Eligibility
No specific visa or eligibility information provided.
