Field Services Engineer (m/f/d) in London

Your mission

• Ensure that photovoltaic power plants consistently meet the agreed service and operational performance targets in line with defined SLAs.
• Review service reports and related documentation in a timely manner and share them with relevant stakeholders.
• Ensure adherence to maintenance schedules in coordination with the Team Leader Field Services and subcontractors.
• Monitor critical accounts and ensure prompt and effective resolution of technical issues.
• Coordinate daily operational activities and oversee the resolution of outstanding site-related issues.
• Work closely with subcontractors and internal teams to resolve escalated customer issues.
• Perform electrical testing (e.g. insulation resistance, continuity, IR testing) and complete associated certification documentation.
• Carry out replacement of inverters, isolators, panels, and other faulty components as required.
• Maintain accurate records using field service applications or CRM systems, including reports, photos, and test results.
• Liaise with O&M coordinators to report issues, request spare parts, and schedule follow-up activities.
• Ensure all work is carried out in accordance with health & safety regulations, risk assessments, and industry standards.
• Deliver a high level of customer service while working across residential, commercial, and industrial sites.
• Support upgrades, retrofits, and implementation of monitoring and smart systems.
• Assist with root cause analysis to identify and resolve plant performance issues.
• Ensure all required documentation (LV/HV RAMS, LOTO procedures) is in place, verified, and shared with relevant stakeholders.
• Support the resolution of escalated customer concerns, including technical and commercial queries.
• Provide support to control and monitoring room operations where required.
• Prepare quotations for additional technical services.
• Select, coordinate, and monitor subcontractors, acting as a key interface between subcontractors, clients, and third parties.
• Support EPC handover processes and ensure smooth transition into operations.
• Ensure compliance with UK standards, regulations, and legislation.
• Monitor, report, and contribute to the continuous improvement of KPIs.
• Maintain flexibility and willingness to travel to project sites as required.

Your profile

• Completed technical education or relevant field experience in electrical, mechanical, or renewable energy disciplines.
• Relevant certifications such as 18th Edition, ECS/CSCS card, First Aid, IPAF, or SSSTS are advantageous.
• Ability to read and interpret technical documentation, including single-line diagrams (SLDs), installation specifications, and test reports.
• Experience working with plant controllers (PPC), SCADA systems, reactive power systems, or hybrid PV/BESS systems is a plus.
• Basic understanding of IT systems, networks, and data communication.
• Knowledge of CCTV and security system architecture is advantageous.
• Strong hands-on technical skills and a proactive, solution-oriented mindset.
• Good organizational skills with the ability to manage multiple tasks and priorities.
• Strong communication skills and customer-oriented approach.
• Clean UK driving license required.
• AP / SAP qualifications and experience with various inverter and transformer manufacturers are considered a strong advantage.

About us

Greencells doesn’t just build solar plants — we help shape Europe’s energy future. With conviction, responsibility, and strong teams. With more than 180 completed projects and over 3.3 GWp of installed capacity, we are one of Europe’s leading EPC and O&M providers for utility-scale solar power. We provide engineering, construction and technical O&M services for grid-connected PV plants in Germany, the Netherlands, the United Kingdom, Ireland, Romania and Hungary – efficiently, reliably, and always looking ahead.

What drives us: We build clean energy solutions for a better tomorrow. It’s not just a line – it’s what we stand for. And how we work reflects that: We take ownership. We listen, think ahead and act with purpose. We stay pragmatic when things get complex. And we’ve got each other’s backs when it matters. For us, quality isn’t a commitment – it’s a mindset.

Whether you manage projects, design systems, balance books or shape communications – you’ll find freedom here, not rigid structures. Your ideas matter. Your initiative is welcome. And your impact is tangible – in results, in teams, in the energy transition. At Greencells, you’ll work in intercultural, interdisciplinary teams – with flat hierarchies, real ownership and the chance to make your mark. Flexible working models, mutual trust and opportunities to grow are just as much a part of our culture as the shared ambition to move forward – professionally and personally.

If that sounds like the kind of place you’re looking for – we’d love to get to know you.