Senior Commissioning Engineer · On-site

Location:

Region: Hamburg, Germany
Country: Germany

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: 26051446

Senior Commissioning Engineer · On-site

Senior Mechanical Commissioning Engineer – Oil Refinery Project (Freelance / Contract)

Location: Hamburg, Germany

Start Date: ASAP

Contract Duration: 12 Months

Contract Type: Freelance / Contract

Rate: DOE

We are currently seeking an experienced Senior Mechanical Commissioning Engineer for a major oil refinery project based in Hamburg, Germany. This is a long-term contract opportunity on a large-scale industrial energy project, offering an immediate start for the right candidate.

Key Responsibilities

  • Lead and execute mechanical commissioning activities across refinery systems and equipment
  • Manage commissioning phases including pre-commissioning, mechanical completion, testing, start-up, and performance verification
  • Support commissioning activities for rotating equipment, piping systems, pumps, compressors, valves, and associated mechanical systems
  • Coordinate commissioning activities with construction, electrical, instrumentation, and operations teams
  • Supervise on-site commissioning technicians, subcontractors, and vendors
  • Ensure all systems are commissioned in accordance with project specifications, safety procedures, and industry standards
  • Review commissioning documentation, procedures, punch lists, and test records
  • Interface closely with OEM vendors, client representatives, and project stakeholders throughout commissioning and start-up phases
  • Identify and resolve technical issues during commissioning and plant start-up activities
  • Ensure strict compliance with HSE regulations and refinery commissioning procedures

Requirements

  • Minimum 5 years’ experience in mechanical commissioning within oil & gas, refinery, petrochemical, power generation, or heavy industrial environments
  • Proven experience as a Senior Mechanical Commissioning Engineer or similar role
  • Strong background in mechanical systems including rotating equipment, pumps, compressors, piping, and static equipment
  • Experience with refinery processes, hydrocarbons, utilities systems, or process plants is highly desirable
  • Familiarity with commissioning procedures, testing protocols, and plant start-up operations
  • Ability to manage commissioning activities independently within a fast-paced site environment
  • Strong understanding of mechanical completion, punch management, and system handover processes
  • Willingness to work on-site in Hamburg, Germany
  • Fluent English AND German language skills are advantageous
  • Eligible to work in the EU on a freelance/contract basis

This is an excellent opportunity to play a key role in delivering a major refinery project while contributing to the successful commissioning and start-up of a large-scale industrial facility.

If you are interested, please apply directly or send your CV for consideration.

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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