Siemens Energy

Backend Developer

Join Siemens Energy as a Backend Developer in Spain or Romania. Manage cloud-native backend systems, collaborate with data teams, and support microservices migration. Enjoy professional growth, meal tickets, and health benefits in a dynamic environment.
Siemens Energy
Siemens Energy
Hybrid Full time UTC+02:00

Siemens Energy

Company Overview

Siemens Energy AG

Munich, Germany

2020

Approximately 96,000 employees worldwide (source: siemens-energy.com). Revenue of 31 billion euros in fiscal year 2023 (source: siemens-energy.com).

What They Do

Siemens Energy focuses on energy technology across the entire value chain, including power generation, transmission, and storage. Core areas include gas turbines, steam turbines, hybrid power plants with hydrogen, power generators, transformers, and renewable technologies led by Siemens Gamesa Renewable Energy (SGRE). This positioning makes the company a global leader in wind energy, with technologies estimated to support about one-sixth of the world's electricity generation (source: siemens-energy.com). The products and services include both conventional and renewable energy solutions, such as onshore and offshore wind turbines from SGRE, grid infrastructure, and hydrogen electrolysis systems that help customers reduce carbon emissions and enhance efficiency through integrated systems for resilient energy grids (source: energydigital.com).

Projects & Track Record

Notable completed projects include the first power plant in South Africa, built in 1895 by Siemens' predecessors, as well as the introduction of high-voltage direct current systems in 1903. Modern achievements include the manufacturing of critical components for regional energy centers and supporting one-sixth of global electricity through its technologies (source: energydigital.com). Current major projects include a 280-megawatt electrolysis system being delivered to the utility EWE in Germany, expected to produce up to 23,000 tons of green hydrogen annually. Additionally, there are localization efforts such as the Siemens Energy Dammam Hub in Saudi Arabia for component manufacturing to strengthen resilient energy sectors (source: energydigital.com).

Recent Developments

In the past two years, Siemens Energy reported strong results for fiscal year 2023 with a revenue of 31 billion euros, despite challenges in the wind business. The company achieved all annual targets and set goals for 2028, aiming for a profit margin of 14-16% before special items and annual revenue growth in the low double digits (source: siemens-energy.com). Recent announcements include securing an investment-grade rating from Moody’s and agreements to accelerate wind order growth. By the end of 2025, 85% of revenue for fiscal year 2026 and 60% for 2027 had already been secured (source: siemens-energy.com).

Working There

Siemens Energy offers positions in engineering, project management, manufacturing, sales, research and development, as well as leadership roles. Departments include Gas Services, Grid Technologies, Siemens Gamesa (Wind), Hydrogen, and corporate areas for finance, execution, and innovation. The corporate culture emphasizes a decentralized approach that has been maintained since the spin-off, with CEO Christian Bruch highlighting the passion of "Team Purple" for energy challenges and innovation in Berlin (source: siemens-energy.com). Hiring occurs at key locations in Germany, including Berlin, Erlangen, and Mülheim, as well as at global expansion sites to meet the high demand for electrification and wind remediation roles (source: siemens.com).


Last updated on May 22, 2026 | Report an issue

Job Description

In this role, your day revolves around managing web servers and configuring essential services to ensure optimal performance. You collaborate closely with data scientists and analysts, leveraging their insights to enhance system functionality. A significant part of your responsibilities includes assisting in the transition from monolithic to microservices architecture, which involves implementing and managing cloud-native solutions on AWS. You utilize Infrastructure-as-Code (IaC) tools to automate cloud infrastructure provisioning and management, streamlining processes for efficiency. Monitoring and troubleshooting Kubernetes workloads, networking, and resource allocation are key tasks, ensuring that applications run smoothly. Additionally, you develop, package, and maintain applications as containers, guaranteeing portability and consistency across various environments while deploying and managing Kubernetes workloads effectively.

How You'll Make an Impact

  • Design, develop, and maintain scalable and efficient backend systems using C# .NET, Python ensuring high-quality, maintainable, efficient and scalable code
  • Collaborate with cross-functional teams to translate business requirements into technical solutions
  • Implement security measures and data protection protocols
  • and unit test cases
  • Participate in code reviews and mentor junior developers
  • Ensuring high-quality, maintainable, efficient and scalable code.

What You Bring

    • 5 years of experience in backend development
  • Strong proficiency in either C# .NET or Python
  • Experience with RESTful APIs and microservices architecture
  • Solid understanding of OOPs concepts and database systems (SQL and NoSQL)
  • Familiarity with version control systems (e.g., Git)
  • Experience in implementing CI/CD pipelines
  • Strong communication and collaboration abilities
  • Proven experience working with Agile methodologies (Scrum, Kanban or similar) in a software development environment
  • Experience with cloud-native architecture and infrastructure-as-code tools
  • Hands-on experience with containerization tooling (Docker, K8s, Podman)
  • Container orchestration and workload management with Kubernetes
  • Understanding of networking concepts in cloud setups (VPCs/Gateways/etc)

Our Office

Siemens Energy's location in One Cotroceni Park is more than just an office space - it's a hub for a vibrant and growing community. Nestled in the heart of Bucharest, this urban development is the perfect place work, surrounded by green spaces, shopping destinations, and everything the city center has to offer. And with the Academia Militara subway station just a 3-minute walk away, getting around the city has never been easier.

Rewards / Benefits

  • The opportunity to engage in an exciting environment on challenging projects.
  • Strong professional support and working with colleagues around the world.
  • Professional development opportunities within the company.
  • To be part of a growing function with a dynamic, informal and inspiring working environment in a position that entails a large responsibility.
  • Your lunch with SE meal tickets
  • Keep your brain fit with our trainings
  • Special for books lovers - Bookster
  • Stay safe and healthy with our medical subscription
  • Think about your future too with Privat Pension Pilon III
  • Take care of yourself with our Wellbeing Initiatives

Apply now

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About the role

May 22, 2026

Full time

Company

May 23, 2026

Hybrid

Smart Grid

Siemens Energy

siemens-energy.com

  •  Barcelona, Spain
  •  Ansoáin, Spain
  •  Bucharest, Romania
  •  Madrid, Spain

Experienced Professional

UTC+02:00