Technician Field Services (m/f/d)

Role summary

Technician Field Services (m/f/d) is a full-time role at Greencells Group in Greater London, England, United Kingdom (on-site). Posted 2026-10-30. Experience level: 2-5.

Job title

Technician Field Services (m/f/d)

Company

Greencells Group

Location

Greater London, England, United Kingdom

Work arrangement

on-site

Employment type

full-time

Category

Trades & Construction

Experience level

2-5

Date posted

2026-10-30

Job description

Overview

For our Operations & Maintenance team in the United Kingdom, we are looking for an experienced, hands-on Technician who combines day-to-day field work with technical leadership. You will maintain and repair commercial and utility-scale PV plants in operation, carry out HV switching as Senior Authorised Person (SAP), support the commissioning of new plants and train colleagues directly on site.

Your mission

Operation and maintenance of PV plants

Carry out preventive and corrective maintenance on operational commercial and utility-scale PV plants to keep them safe, available and performing in line with agreed SLAs

Perform electrical testing (insulation resistance, continuity, IV curve tracing, thermography) and complete the associated certification documentation

Inspect and maintain modules, inverters, combiner boxes, transformers, switchgear, cabling, monitoring and security systems

Maintain accurate records of all work, including service reports, photos and test results, in our field service and CMMS systems

Fault response, switching and repair

Respond to faults and outages on site, diagnose root causes and carry out repairs, including replacement of inverters, isolators, modules and other components

Act as Senior Authorised Person for LV, HV and EHV systems: plan, authorise and carry out switching operations on 11 kV / 33 kV switchgear, ring main units, transformers and substations, including isolation, earthing and LOTO

Issue and cancel safety documents (permits-to-work, sanctions for test, limitation of access) and ensure RAMS and Electrical Safety Rules are in place and followed

Take part in the on-call rota and act as technical point of contact for DNOs / IDNOs and asset owners on grid connection and HV matters

Coordinate warranty claims and technical escalations directly with Tier 1 manufacturers of modules, inverters, transformers and switchgear

Commissioning of new plants

Support the commissioning of new PV and hybrid PV/BESS plants as required, including LV/HV testing, energisation and functional checks

Support EPC handover processes and ensure a smooth transition into operations

Support retrofits, upgrades and the implementation of monitoring, PPC and SCADA solutions

Your profile

Completed technical education (e.g. HNC/HND, apprenticeship or degree) in electrical engineering or a related discipline

Several years of hands-on field experience in photovoltaics, with a clear focus on commercial & industrial (C&I) and/or utility-scale ground-mounted and rooftop systems

Current appointment or demonstrable experience as Senior Authorised Person (SAP) for HV systems; competence for LV, HV (11 kV / 33 kV) and ideally EHV is essential

All relevant UK certifications, such as 18th Edition BS 7671, City & Guilds 2391 (Inspection & Testing), HV switching and authorisation training, ECS/JIB card and SSSTS/SMSTS; IPAF and First Aid are an advantage

Proven experience with Tier 1 manufacturers, e.g. inverters (SMA, HW, Sungrow, Power Electronics, SolarEdge), modules (LONGi, JinkoSolar, Trina, JA Solar, Canadian Solar) and HV equipment (Schneider Electric, Siemens, Hitachi Energy, Lucy Electric)

Practical experience in fault finding, repair and commissioning of PV plants, including HV substations

Experience in training and leading technicians in the field

Sound knowledge of G99 requirements, grid compliance, PPC/SCADA systems and ideally hybrid PV/BESS installations

Ability to read and interpret SLDs, protection settings, technical specifications and test reports

Motivation to work on site every day

Strong communication skills, customer orientation and confidence in dealing with asset owners, DNOs and senior stakeholders

Willingness to travel nationwide and occasionally internationally; full clean UK driving licence

A responsible, proactive and solution-oriented approach to work, with the ability to apply professional expertise effectively in day-to-day activities

A commitment to respectful, trusting collaboration and mutual support within the team

What we offer

unsolicited application

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 190 completed projects and over 4.1 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.