Senior Commissioning Engineer · On-site

Location:

Region: Lower Saxony
Country: United Kingdom

Role:

  • Industry: Engineering
  • Job Type: Contract / Freelance
Working Arrangement: On-site
Rate: Negotiable

Application Details:

Start Date: ASAP
Expiry Date: 30/06/2026
Job Reference: 26051448

Senior Commissioning Engineer · On-site

Senior Commissioning Engineer – Biogas Plants (Freelance / Contract)

Location: Germany (Nationwide Travel Required)

Start Date: 01/06/2026

Contract Duration: 12 Months

Contract Type: Freelance

Rate: €70–110 per hour (depending on experience)

We are currently seeking an experienced Senior Commissioning Engineer (Mechanical or Electrical) for the installation and commissioning of biogas plants across Germany. This is a long-term contract opportunity supporting multiple renewable energy projects, with an immediate start available.

Key Responsibilities

  • Lead and execute commissioning activities for biogas plant installations
  • Support the installation, testing, and start-up of mechanical and electrical equipment
  • Coordinate on-site commissioning phases including system checks, performance testing, and handover
  • Work closely with project managers, site teams, and subcontractors across multiple locations
  • Ensure all systems are commissioned in line with technical specifications and operational requirements
  • Identify, troubleshoot, and resolve technical issues during installation and commissioning
  • Review commissioning procedures, documentation, and reports
  • Ensure compliance with health & safety regulations and environmental standards

Requirements

  • Minimum 5 years’ experience in commissioning within biogas, renewable energy, or process plant projects
  • Mechanical or Electrical engineering background
  • Proven experience in commissioning industrial equipment and systems
  • Strong understanding of biogas plant processes, or similar (e.g. waste-to-energy, anaerobic digestion, or process plants)
  • Ability to work independently across multiple project sites
  • Willingness to travel extensively across Germany
  • Strong communication and coordination skills
  • Fluent German language skills (spoken and written) are essential
  • Eligible to work in Germany on a freelance/contract basis

This is an excellent opportunity to contribute to Germany’s growing renewable energy sector,

working on critical biogas infrastructure projects with a competitive hourly rate.

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.

Apply Now

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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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