Backend & DevOps Engineer

🌐 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 transition by making renewable energy more accessible and inclusive. 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. 👭 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 USC membership, discounted BVG public transport ticket, e-bike or e-moped, exclusive discounts via FutureBens or monthly vouchers - the choice is yours. 💬 Stay In The Loop: We believe in transparent communication — from weekly town halls and quarterly updates to regular retrospectives. Got feedback or an idea? We’re all ears. 🤝 Work Together, Celebrate Together: 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. 🇩🇪 ÜBER UNS Wir sind der am schnellsten wachsende digitale Ökostromanbieter mit B Corp™ Zertifizierung in Deutschland – und treiben die Energiewende aktiv voran. Unser Ziel: Erneuerbare Energie für alle zugänglich und inklusiv machen. Wie? Mit variablen Tarifen, dynamischem Strompreis, Smart EV Charging, Optimierung von Wärmepumpen und Solaranlagen sowie Deutschlands erstem virtuellen Kraftwerk: NeoGrid™. Bei Ostrom arbeitest du in einem offenen, dynamischen Umfeld, in dem du du selbst sein kannst, Herausforderungen annimmst und dich kontinuierlich weiterentwickelst. 🌱 Nachhaltigkeit, die zählt: Mit deinem Wechsel zu Ostrom unterstützt du aktiv die Energiewende. Unsere Kund*innen helfen im Schnitt, jährlich 1,5 Tonnen CO₂ gegenüber dem deutschen Durchschnittsstrommix einzusparen. 📈 Wertschätzung, die sich auszahlt: Neben einem attraktiven Gehalt erhältst du bei uns VSOPs – Unternehmensanteile, mit denen du direkt am Erfolg von Ostrom beteiligt bist. 👭 Teamkultur auf Augenhöhe: Bei Ostrom leben wir flache Hierarchien und eine offene Feedbackkultur. Deine Meinung zählt – vom ersten Tag an. 💪🏽 Benefits: Du erhältst ein flexibles Paket mit vielen Extras – von einem jährlichen Weiterbildungsbudget, über eine betriebliche Altersvorsorge, bis hin zu einer vergünstigten USC-Mitgliedschaft, einem vergünstigten BVG Jobticket oder deinem eigenen E-Bike bzw. E-Roller und sowie Rabattcodes über FutureBens. Alternativ wählst du monatliche Gutscheine – du entscheidest, was dir wichtig ist. 💬 Transparenz: Ob in wöchentlichen Townhalls, vierteljährlichen Updates oder offenen Retrospektiven – wir glauben an klare Kommunikation und kontinuierlichen Austausch. 🤝 Erfolge feiern wir gemeinsam: Teamarbeit steht bei uns im Mittelpunkt – und genauso feiern wir auch unsere Erfolge: mit regelmäßigen Happy Hours, Team-Ausflügen und unvergesslichen Company Events. 🌍 Work you way: Ob im Berliner Büro, im Homeoffice oder remote unter der Sonne – bei uns arbeitest du dort, wo du am produktivsten bist. 🚀 Wachse mit uns: Persönliche Entwicklung ist bei Ostrom keine Floskel. Wir unterstützen dich mit Lernbudgets und Raum zum Ausprobieren – damit du dich fachlich und persönlich kontinuierlich weiterentwickeln kannst.

About myTomorrows  myTomorrows is a global health tech company dedicated to breaking down barriers for patients seeking treatment options.    We strive to enable earlier and better treatment access by bridging the gap between those searching for possible options, and the companies who develop them. We work closely with patients, healthcare professionals, trial sites, patient advocacy groups, and BioPharma – connecting key stakeholders in the drug development ecosystem.    We’ve developed a cutting-edge AI-powered technology platform that simplifies and streamlines access to drugs in development. To support our users and clients, we have a range of industry-expert specialized teams ready to help. Our services include clinical trial patient recruitment, Expanded Access Program management and Real-World Data collection.    With a global footprint spanning 134 countries, to date we’ve supported over 17,000 patients, 3,000 physicians and 350 sites, earning the trust of 60+ BioPharma companies. In October 2025, we closed a €25M investment with Avego Healthcare Capital to fuel our global ambitions and scale the business.   Join us in shaping the future of treatment access - making tomorrow’s therapies accessible for people who need them today.  The opportunity: Backend Engineer As a Backend Engineer, you will be responsible for developing and maintaining the platform infrastructure that powers our products. You will work closely with our Frontend Engineers, DevOps Engineers, and other stakeholders to design and build scalable, reliable, and high-performance products. Given that most of our team is located in the Netherlands, we only consider candidates for this position who live within commuting distance to our office in Amsterdam. What you'll do in this role: * Design and implement scalable and reliable backend systems and infrastructure to support our products * Develop and maintain our micro-services to expose platform functionality to internal and external clients * Collaborate with development and quality assurance teams to ensure high availability, scalability, and security of our systems * Collaborate with DevOps Engineers to ensure the continuous delivery and deployment of software products * Work with software developers to identify and implement improvements to our platform architecture and functionality * Develop and maintain documentation of our systems and processes * Mentor and train junior members of the backend team * Keep up-to-date with the latest trends and technologies What you bring to the table: * Proficiency in Python programming language * 3+ years of experience in the related field * Experience with relational databases such as MySQL, PostgreSQL, or Oracle * Experience with the cloud platforms (AWS, Azure or GCP) * Experience with containerization technologies such as Docker and Kubernetes * Excellent problem-solving skills and ability to work independently and as part of a team * Strong communication skills and the ability to work with stakeholders across the organization * Excellent English communication skills  WHAT SUCCESS IN THE FIRST 6 MONTHS LOOKS LIKE: * You’ve built trust with Product, Frontend, and DevOps peers and taken clear ownership of 2-3 domain APIs/services, including stewardship of their contracts and SLAs. * You’ve established an API-first workflow: starting from use cases, you propose and socialize OpenAPI specs, align on naming and conventions, then implement in FastAPI with Pydantic models. * You’ve delivered impactful API features end-to-end (design → implementation → tests → docs) that are consumed by internal and external clients without hand-holding. * You’ve raised API robustness: strong request/response validation, consistent error models, pagination and idempotency where appropriate, and backward-compatible versioning enforced via automated contract tests in CI (ruff, Poetry, pre-commit). * You’ve improved the reliability and performance of our service by adding meaningful observability (metrics, logs, tracing) and defining SLIs/SLOs for key endpoints—reducing 5xx rates and improving p95 latency. * You’ve made safe database changes in MySQL with SQLAlchemy migrations, optimized critical queries, and contributed to data access patterns involving DynamoDB or Neo4j while keeping API contracts stable. * You’ve strengthened the security of APIs (authN/authZ boundaries, scoped tokens, least-privilege access, secrets management, rate limiting) and documented the approach. * You’ve written clear API documentation and examples (e.g., snippets/collections), shared knowledge with the team, and mentored junior engineers so others can build on your work. Current tech stack: We are fully cloud-native, leveraging AWS and adopting a Lean, API-first product development approach driven by modern cloud technologies and thoughtful design practices. Our backend applications are built using Python, FastAPI, Pydantic, and SQLAlchemy (MySQL). On the front end, we predominantly develop with Angular and also utilize Headless Wagtail and WordPress for select products. To ensure code quality and a consistent release pipeline, we employ GitHub Actions for CI/CD along with tools like Renovate, ruff, Poetry, and pre-commit. We containerize our applications using Docker and Docker Compose. Currently, we are transitioning from AWS Lambda-based deployments to Kubernetes-managed services and moving from AWS CloudFormation to Terraform for infrastructure as code. We continue to expand our capabilities in knowledge graphs (Neo4j) and database technologies (MySQL, DynamoDB). What we offer: * Impactful work that helps patients gain access to potentially lifesaving treatments.  * International work environment, scale-up energy and a flat organizational structure that encourages creativity and accountability.  * Competitive salary, annual performance bonus and an Employee Stock Option Plan.  * Great career development opportunities in a fast-growing company.   * Learning and development budget alongside internal knowledge sharing sessions.  * Attractive pension plan, full premium covered by myTomorrows.  * Hybrid working model.  * Policies to support working parents.  * Healthy lunch at the thriving Amsterdam office.   * Unlimited access to professional guidance by certified psychologists via OpenUp   * Enjoy monthly events hosted by our vibrant Culture Club as well as an annual ‘myTomorrowland’ company-wide celebration!  Equal opportunities myTomorrows is an Equal Opportunity Employer and, beyond upholding discrimination-free practices, we are committed to cultivating a workplace where difference and diversity are protected and celebrated. The best work comes from our best selves, and we go to great lengths in supporting our team members to be just that.