Commissioning Engineer · On-site

Location:

Region: Berlin
Country: Germany

Role:

  • Industry: Data Centres, Engineering
  • Job Type: Contract / Freelance
Working Arrangement: On-Site
Rate: Negotiable

Application Details:

Start Date: ASAP
Expiry Date: 31/03/2026
Job Reference: 10022608

Commissioning Engineer · On-site

Location: Wustermark / Berlin–Brandenburg

Start Date: Flexible / Phased mobilisation

Languages: Fluent German and English

Employment Type: Freelance / Contract

We are seeking an experienced Electrical Commissioning Engineer to support the commissioning and handover of a large‑scale hyperscale data‑centre campus in the Berlin–Brandenburg region. The role will focus on the testing, energisation, and commissioning of HV, MV and LV electrical systems delivered under an EPC and multi‑contractor environment.

The position will work closely with electrical installation contractors, OEMs, controls/BMS teams, and the independent commissioning authority to ensure systems are safely commissioned, fully integrated, and ready for client handover across multiple project phases.

Key Responsibilities

  • Execute commissioning activities for HV, MV and LV electrical systems within a hyperscale data‑centre environment.
  • Support energisation and testing of:
  • HV and MV substations
  • Transformers and switchgear
  • MV ring main units and LV distribution systems
  • UPS and generator interfaces
  • Perform and/or witness FATs and SATs, including factory and site acceptance testing with OEMs.
  • Carry out and support protection and relay testing, functional testing, and performance verification.
  • Support Integrated Systems Testing (IST) in coordination with mechanical, controls, EPMS and BMS teams.
  • Interface with electrical subcontractors, EPC commissioning management, OEM representatives, and the client’s commissioning authority.
  • Identify, record, and resolve commissioning issues, defects, and punch‑list items.
  • Prepare and review commissioning documentation, including:
  • Commissioning procedures and method statements
  • Test scripts, check sheets, and reports
  • Red‑line drawings and as‑built documentation
  • Ensure commissioning activities comply with German standards, safety regulations, and project‑specific requirements.
  • Support authority inspections, client witnessing, and final handover activities.
  • Provide commissioning support during phased handovers and follow‑on commissioning scopes.

Qualifications

  • Bachelor’s degree in Electrical Engineering or a related engineering discipline.
  • Proven experience as an Electrical Commissioning Engineer on data centres, critical infrastructure, energy, or large industrial projects.
  • Strong technical knowledge of HV, MV and LV electrical systems.
  • Hands‑on experience with:
  • Energisation procedures
  • Protection and relay testing
  • FAT/SAT execution
  • Electrical system integration
  • Experience working within EPC or multi‑contractor project environments.
  • Strong understanding of commissioning documentation, safety procedures, and system handover processes.
  • Previous experience working on freelance or project‑based assignments is advantageous.
  • Excellent communication skills and ability to work effectively in site‑based, fast‑paced commissioning teams.

g2 Recruitment are committed to equality of opportunity for all applications from individuals are encouraged regardless of age, disability, sex, gender reassignment, sexual orientation, pregnancy and maternity, race, religion or belief and marriage and civil partnerships or any other characteristic protected by law.

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L&D Team

We are very lucky that g2 recruitment see Learning and Development as a vital part of a consultants journey which is why we have 4 people in the team who you will work very closely with from day 1 in your career. The team are on hand to guide you through your career at all levels and provide extra support working closely with the management team to give all consultants the best chance of success.  

Our Three Pillars of Training

Academy:
Week 1 is a series of remote sessions to learn all things systems, followed by a 1 week academy process which is a mixture of classroom and deskside this will be in one of our UK offices and usually consists of 3-8 other consultants all starting their journey together.

Experienced Modules:
These are a variety of sessions curated by us designed to support consultants as they are progressing through the career ladder, the aim is to ensure consultants at all levels have access to L&D.

Junior Management Programme:
Ran by our head of L&D this programme is designed to support junior managers as they start their management career. This involves things like personal branding, time management and ends in a business plan which is presented to members of the Exec board and senior management team.

Jaz123
Jaz D’Avola
Head of Learning & Development

Jaz joined g2 Recruitment in 2013.

She now leads our Learning and Development programme, transferring the knowledge and wisdom she learnt as a recruiter to the new generation of talent.

Imani
Imani WIlliams
Learning and Development Consultant

Imani joined g2 Recruitment in 2022.

His role involves developing individuals in all areas of the business, varying from inducting and onboarding consultants to working with them 1 to 1 to identify areas of development.  He aids with growth of L&D across the business, watching consultants experience and develop.

Meghan1
Meghan Mcloughlin
Learning and Development Consultant

Meghan joined g2 in 2023 as an L&D consultant, Working in recruitment for 6 years, her role is to  help consultants at all levels to upskill and focus on development points. This could be anything from sales calls or candidate calls to organisation improvements.

Kane Gray
Systems & Academy Trainer

Kane joined g2 in April 2023 as an Academy & Systems Trainer.

His role involves teaching the consultants that are new to the company the foundations of recruitment and our systems before then helping them to upskill in areas specific to each consultant. Working closely with different consultants and watching them implement the feedback, apply it, and then benefit off the back of it.

Candidates

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Clients

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