Job Description

(Senior) Project Engineer – BESS Projects

About Return
Return is the leading European independent energy storage provider, committed to revolutionizing the energy sector. Headquartered in Amsterdam and offices in Munich, Hamburg and Berlin, Return offers innovative, sustainable solutions to store and intelligently manage energy, ensuring power is used efficiently when and where it’s needed most. With a growing presence across Europe, Return is at the forefront of the energy transition, integrating large-scale battery energy storage systems (BESS) to support grid stability, renewable energy integration, and Europe's net-zero goals. Driven by a team of experts, Return aims to provide reliable energy storage that powers the future of clean energy.

About the Role
Return is building one of Europe's largest renewable energy portfolios, with a rapidly growing pipeline of battery energy storage systems (BESS) projects across the Netherlands, Germany, Belgium, Spain, Poland, and beyond. As many of these projects move into the contracting phase, we're scaling up our engineering and procurement capability to match our ambitions.

At Return Engineering and Procurement is one department, we believe that this is essential in a new industry where technology is changing fast and technical requirements are not fully established yet.

Our procurement team has developed a smart, standardised approach to handle projects at scale; clustering contracts, streamlining processes, and driving consistency across technical, commercial, and contractual dimensions. To bring this into execution, we're looking for a driven project engineer with a team player attitude and commercial fingerspitzen gefühl to join our team.

What You'll Do

You will be part of an experienced engineering team developing and delivering large-scale Battery Energy Storage Systems (BESS) across Germany. As a Project Engineer, you are the linking pin between our teams (e.g. project developers, origination, asset management) and our HV and BoP partners. You work closely together with the Project Lead to drive a project design from the early development phase up to FiD, until full handover to construction. You capture our technical requirements from your colleagues and translate them into concrete requests to the battery suppliers. These requirements have a wide range: such as permit requirements, noise, fire safety, grid compliance, civil works, learnings from operational projects, client requirements, cyber security, IT, etc. You don’t have to be an expert on all of these topics but you have the drive to understand each topic enough to align them with all relevant stakeholders. In close cooperation with your fellow project team members and together with the procurement manager you will ensure that requirements from all workstreams are captured in the construction contracts.

You will work closely with a procurement manager with whom you will implement the technical elements of a project into a contract. From day one, you take on real responsibility.

• Capture and structure technical requirements from within the Return to apply in our BESS projects.

• Derive and formulate specific technical questions for HV and BoP partners.

• Coordinate and follow up parallel communication with multiple potential partners in commercial processes.

• Ensure timely delivery of technical information and document outcomes.

• Prepare data analyses and technical comparisons and present that to the engineering team for decision making.

• Collaborate closely with the project teams and procurement manager and progressively take on more ownership.

Who You Are

You have a background in electrical engineering or a closely related field, giving you the technical foundation to engage credibly with all stakeholders. Preferrable, you have experience in all phases of renewable energy projects which gives you the knowledge and experience to bring our projects from Ready to Build to a Final Investment Decision and beyond.

What matters most is how you work: you are organised, proactive, and willing to follow up until you get a proper answer. You don't let things stall on the side of your stakeholders, either colleagues or contractors. You can manage several parallel threads without losing track, and you communicate clearly both internally and externally.

If you have already worked on BESS or energy storage projects – even at the edges – that is a genuine advantage. The same goes for experience with high voltage technology. Fluency in both German and English is a must given our international team setup.

Most importantly: you are ambitious and genuinely excited about battery storage. We are building large systems that matter, and we want someone who is here for that.

What We Offer

At Return, you'll be joining a young, ambitious, and close-knit team that's genuinely passionate about accelerating Europe's energy transition. We offer:

• Real responsibility from day one, not a support function

• Full exposure to the lifecycle of large-scale BESS projects

• A motivated, experienced team with real project dynamics

• Munich, with flexible working arrangements

Application process 

Our hiring process is swift but thorough:  

• Introductory call,  

• Face-to-face meeting with two or more team members,  

• Brief call with senior management, 

• Call to discuss practical details such as financials.  

No recruiting

We do not work with recruitment agencies or external recruiters for our hiring process. Applications should be submitted directly through our careers page.