Lead Mechanical Completion / Lead Commissioning Engineer

Mansource UK Ltd.; Stockholms län; On-site; SEK 700,000 - 900,000; Full time

Job summary

A prominent engineering firm is seeking a Lead Mechanical Completion / Lead Commissioning Engineer for an important brownfield project in Sweden focused on constructing a Plastic Refinery Plant. This role involves leading mechanical completion, pre-commissioning, and commissioning preparation activities. The ideal candidate should possess a degree in Mechanical Engineering and have 8-10 years of relevant oil & gas, petrochemical, or refinery experience. Strong communication and leadership skills are essential, along with knowledge of industry standards. Fluency in English is required.

Qualifications

• Minimum 8–10 years of relevant experience in commissioning and mechanical completion within oil & gas, petrochemical, or refinery projects.
• Proven ability to write and implement commissioning procedures and coordinate multidisciplinary teams.
• Previous experience in brownfield or modification projects is highly preferred.

Responsibilities

• Lead all activities related to mechanical completion, pre-commissioning, and commissioning preparation.
• Develop and review commissioning procedures.
• Ensure systems are safely and efficiently brought online according to project standards and requirements.

Skills

Mechanical Engineering

Commissioning procedures

Communication skills

Leadership

Industry standards knowledge

Safety regulations

Fluent in English

Education

Degree in Mechanical Engineering or equivalent

Job description

Profile Lead Mechanical Completion / Lead Commissioning Engineer

Lead Mechanical Completion / Lead Commissioning Engineer for a major brownfield project for Borealis, involving the construction of a Plastic Refinery Plant in Sweden.

As Lead Mechanical Completion / Lead Commissioning Engineer, you will be responsible for leading all activities related to mechanical completion, pre‑commissioning, and commissioning preparation. You will play a central role in developing and reviewing commissioning procedures, ensuring that systems are safely and efficiently brought online according to project standards and client requirements.

Requirements Lead Mechanical Completion / Lead Commissioning Engineer

• Degree in Mechanical Engineering or equivalent technical discipline.
• Minimum 8–10 years of relevant experience in commissioning and mechanical completion within oil & gas, petrochemical, or refinery projects.
• Previous experience in brownfield or modification projects is highly preferred.
• Proven ability to write and implement commissioning procedures and to coordinate multidisciplinary teams.
• Strong understanding of industry standards and safety regulations.
• Excellent communication and leadership skills.
• Fluent in English (both spoken and written).

Company profile

This role is part of a major brownfield project for Borealis, involving the construction of a Plastic Refinery Plant designed to extract oil from waste plastics using advanced pyrolysis technology. The process converts plastic waste into pyrolysis oil — a valuable raw material that can replace fossil-based feedstock in petrochemical production. This project plays a key role in promoting circularity and sustainability in the chemical industry.

Short description (important for Google!)

Lead Mechanical Completion / Lead Commissioning Engineer for a major brownfield project for Borealis, involving the construction of a Plastic Refinery Plant in Sweden.