Commissioning Engineer (m/w/d)
JUWI
Company Overview
JUWI GmbH, a subsidiary of MVV Energie AG
Wörrstadt, Germany
1996
Approximately 1,350 employees in 8 countries (source: juwi.com). Revenue is not publicly disclosed as JUWI is privately held.
What They Do
JUWI focuses on onshore wind energy projects in Germany as well as large-scale solar photovoltaic systems worldwide. The company offers hybrid systems with storage solutions for industrial off-grid applications and comprehensive operations and maintenance services (O&M) (source: juwi.com). Services include project acquisition, planning, engineering, procurement, construction (EPC), financing support, and operational management for wind, solar, and battery storage systems. JUWI has implemented over 2,000 projects with a total capacity of more than 4,000 MW in solar and over 1,300 wind turbines with a total capacity of 3,000 MW (source: juwi.com). Target markets include Germany for wind and the USA, the Middle East, South Africa, Southeast Asia, and Australia for solar, serving a diverse range of customers including municipalities, businesses, farmers, and investors.
Projects & Track Record
JUWI has realized over 3,000 wind and solar plants worldwide with an installed capacity of 7,000 MW, generating 11 billion kWh annually, which corresponds to about 4 million German households (source: juwi.com). Notable projects include the 204 MW Kozani bifacial solar park in northern Greece, the 125 MW Pavant solar park in the USA, and the 86 MW Prieska solar park in South Africa. JUWI has also successfully completed significant wind projects such as the 145 MW Garop wind farm in South Africa and the 60 MW wind farm in Nebraska, USA (source: renewable-energy-industry.com). Currently, JUWI is working on a robust project pipeline in Colorado, USA, and has launched the world's largest solar hybrid project at a mining site in Egypt.
Recent Developments
In November 2025, JUWI announced a collaboration with FERALPI STAHL to develop wind and solar parks in the central and northern districts of Saxony for climate-friendly electricity production (source: renewable-energy-industry.com). In 2022, JUWI merged with Windwärts Energie GmbH and completed the largest bifacial solar park in Europe in Kozani, Greece. Additionally, the world's largest solar hybrid project at a mining site in Egypt was launched (source: juwi.com). Since 2021, JUWI has also expanded its O&M services to battery storage and continues to hold certifications such as ISO 9001:2015 and ISO 27001.
Working at JUWI
JUWI employs around 1,350 people in various roles, including project development, engineering, procurement, construction, operations and maintenance services, as well as financing and planning management (source: juwi.com). The company culture emphasizes passion, commitment, and responsibility of employees as drivers of success. JUWI offers a stable working environment within the MVV Group, which has over 30 years of experience in the industry (source: juwi.com). Employees work at various locations in Germany and internationally, with the main office located in Wörrstadt. However, specific benefits such as salaries or health plans are not publicly documented.
Last updated on 2026-02-23 | Report an issue
Job Description
We are looking for a curious and determined commissioning engineer to be based in Athens, Greece however prepared to travel 80% of their time. You'll join our dynamic Construction team who have built photovoltaic plants with a total capacity of over 350 megawatts (MW). Do you think innovatively, are a team player and have a passionate for sustainability. Does that sound like you? Then apply now. We look forward to getting to know you.
Your contribution to the energy transition
As our Commissioning Engineer, you will be actively involved in commissioning of Solar PV projects in various countries within the EMEA region with the focus in Greece. The position is site based with travelling from project to project.An estimate of 80% travelling to various sites within Greece.
You can look forward to the following tasks:
Planning and Coordination
- Develop detailed commissioning plans, schedules, and procedures to ensure all systems are tested and verified according to project specifications
- Collaborate with project managers, design engineers, and installation teams to align commissioning activities with overall project timelines in close cooperation with the Commissioning manager
- Specify test and commissioning requirements; and review test and commissioning protocols / procedures submitted by original equipment manufacturers, product suppliers and system integrators
- Coordinating and Execute construction handover to commissioning
- Manage external supplier on site during commissioning activity
System Testing and Validation
- You'll oversee on-site commissioning activities, ensuring proper installation, system integrity, and compliance with technical and safety standards
- Conduct pre-commissioning inspections to verify that all components are installed correctly and meet design specifications
- Perform functional tests on PV systems, including inverters, transformers, and other electrical components, to ensure they operate as intended
- Validate system performance against design criteria and industry standards, ensuring optimal operation and efficiency
- You'll conduct tests to ensure the installation meets connection standards and Grid code regulations.
- Execution and supervision of SCADA system test and commissioning
Troubleshooting and Problem-Solving
- Identify and diagnose issues that arise during the commissioning process, such as equipment malfunctions or installation errors
- Implement corrective actions to resolve identified issues, ensuring systems are fully operational and meet performance standards
Safety and Compliance
- Ensure all commissioning activities comply with local, state, and federal regulations, as well as industry standards
- Develop and enforce safety procedures to protect personnel and equipment during the commissioning process
Documentation and Reporting
- Maintain detailed records of all tests, inspections, and issues encountered during commissioning
- Prepare comprehensive reports documenting the commissioning process, test results, and any deviations from design specification
Training and Support
- Provide training to O&M teams on the proper operation and maintenance of PV systems
- Offer ongoing technical support to ensure systems continue to operate efficiently and effectively
Continuous Improvement
- Review and refine commissioning procedures to enhance efficiency and effectiveness for future projects
- Incorporate feedback from project teams and clients to improve commissioning practices and outcomes
These responsibilities ensure that PV systems are commissioned safely, efficiently, and to the highest standards, ultimately contributing to the successful deployment of solar energy projects.
Your energy is required
You impress us with these qualifications:
- Applicant should hold a bachelor's degree in electrical engineering, renewable energy, or a related field
- Minimum 3 years of experience in commissioning photovoltaic plants
- Demonstrate excellent knowledge of PV systems, inverters, transformers, SCADA systems, and grid code compliance testing
- Familiar with commissioning protocols, industry standards, and safety regulations
- Read and interpret complex electrical diagrams and schematics is a must
- Able to work both independently and in a team
- Experience with Insulation resistance test and related instrumentation and procedure (from 1KV to 10kV)
- Experience with MV cable withstand test (VLF test)
- Experience with MV/HV energization procedure
- Experience with MV (fixed and withdrawable) switchgear manoeuvre
- Experience in cable fault locating is nice to have
- Experienced in LOTO procedure
- Knowledge on configuring protection relays
- Knowledge to operate testing kits like primary and secondary injection kit, HV voltage test kit Testing experience of HV protection relays, HV breakers and Transmission line
- Knowledge of SCADA systems from different technologies and manufacturers is nice to have.
- Troubleshooting skill
- Willing to perform commissioning activity/works at site
- Willing to work under pressure
- Willing to travel
- Fluent English Speaking and writing
- Excellent organizational and communication skills
- Office package and advanced MS Excel knowledge is a must
You have more to offer? We will gladly consider it. You don't meet all the requirements? No problem. We look forward to receiving your application.
Your energy booster at JUWI
At JUWI, an inspiring working environment awaits you. Our flexible working conditions creates the space for you to integrate your work into your life:
- Company culture: a space for creativity and innovation
- International teams: collaborating and communicating continuously with teams across the JUWI group fosters professional growth in a culturally diverse environment
- Structured environment: benefit from well thought out processes and procedures within our ISO 9001:2015 certified matrix organization
- Professional development: access to a wide range of opportunities for advancing your career
- Smart working: working from home opportunities is part of our commitment to cultivating a healthy work-life balance
- Health insurance: we've got your back! Our private health insurance plan covers you
- Performance-based bonus: work toward your best performance, with your bonus also reflecting the region's performance
Our energy matches yours? Then apply for a job with us!
Ready for a dream job full of energy and opportunities? Then get started - you can start with a few clicks!
This is us - a strong team shaping the future
At JUWI, we stand for a sustainable and strong future for all of us. Our motto "Power of Our Unity. Sustainable. Together. Strong" permeates everything we do, from planning to implementation.
As a pioneer in the field of renewable energy, we develop innovative solutions to drive the transition to a sustainable energy supply. Our commitment to climate protection, community and economic progress is deeply rooted in our DNA.
We look forward to meeting you.
Apply now
Job expired?Please let JUWI know you found this job on Rejobs. This will help us grow and get more people to work on renewable energy!
Apply now
Job expired?Please let JUWI know you found this job on Rejobs. This will help us grow and get more people to work on renewable energy!
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About the role
March 10, 2026
Full time
Company
- Athens, Greece
Minimum 3 years of experience
UTC+02:00