Want to Change Tomorrow, Today?
Join Return as (Senior) Project Engineer
The power market is transforming — and Return is leading the change. As pioneers in large-scale battery energy storage (BESS), we’re unlocking critical flexibility in an increasingly renewable grid. With offices in Amsterdam, Hamburg, Munich and Madrid, Return delivers innovative storage solutions that ensure energy is available precisely when and where it’s needed. Our expanding footprint across Europe places us at the heart of the energy transition, where our BESS technology supports grid stability, maximizes renewable integration, and accelerates Europe’s path to net zero.
The energy transition demands speed, scale, and strategic partnerships — and that’s where you come in. We’re seeking an experienced project engineer to expand our project development team in Germany.
What you will do
Design & Engineering Support
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Develop efficient layouts for our BESS sites, in consolation with our architects, drawers and external advisors. Take responsibility for the technical design of the BESS layouts and work together and advise the development team for the optimal solutions
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Review and assess supplier designs during tender processes. Advise the internal organisation on component choices and configurations. Represent Return towards our external stakeholders when it comes to technical topics.
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Support the development team in commissioning and evaluating technical reports such as: soil reports, landscape integration, statics, sound insulation, fire protection, etc.
Cable Routing & Technical Decision-Making
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Design cable routes based on land ownership, environmental constraints, and KLIC = BIL&TIS reports.
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Make informed technical decisions regarding redundancy, overcapacity, and routing strategies, based on established best practices.
Best Practices & Design Standards
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Maintain and update internal Return best practices, incorporating:
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Technical standards and design rules
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Lessons learned from past projects and operational feedback
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Risk register insights
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Input from purchasing, permitting, technical, and energy sales teams
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Collaborate with the engineering team from other countries to keep design rules current, considering:
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Technological developments
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Preferred suppliers
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Regulatory frameworks (e.g., PGS 37-1)
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Grid connection requirements (DSO/TSO, voltage levels)
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Documentation & Contract Support
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Manage and maintain Employer’s Requirements for EPC (Engineering, Procurement, and Construction) contracts.
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Ensure technical documentation is accurate, complete, and aligned with project goals.
Collaboration with Asset Management and
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Interface with the technical team to integrate operational insights into design improvements.
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Translate lessons learned into actionable updates for best practices and design standards.
Technical Database Management
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Maintain a structured database of specifications and pricing from system integrators for Battery Energy Storage Systems (BESS) and high-voltage
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Track and document trends in system design, including:
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Container vs. cabinet configurations
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Inverter integration
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Noise reports and CAD assets
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Energy density, power capacity, and land use metrics
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What you bring
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Minimum of 5 years working experience in a similar role or field.
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Strong analytical and technical assessment skills. True team player and able to provide solid advice to your colleagues through effective communication and cross-functional collaboration (over multiple countries)
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Understanding of energy infrastructure (preferably experience with BESS, solar or wind) and grid connection requirements
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Familiarity with permitting and regulatory processes for electrical components
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Structured documentation and data management
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German and English speaker
Why join Return?
At Return, we don’t just talk about impact — we build it. You’ll join a passionate and skilled team where your contributions help shape real-world solutions and directly support a more sustainable future. Our agile and collaborative culture is dedicated to accelerating the energy transition at scale.
Originally posted on Himalayas
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