Mechanical Commissioning Engineer

Mechanical Commissioning Engineer

Wärtsilä Energy leads the transition toward a 100% renewable energy future. We are looking for a Mechanical Commissioning Engineer who will plan, lead and manage mechanical construction and commissioning activities on‑site, ensuring everything runs smoothly from installation through to final handover. The role requires approximately 250‑300 days abroad per year and is permanently based in Vaasa, Helsinki, or Turku, Finland. Relocation costs and immigration support are not available for this position.

• Planning and monitoring the progress of mechanical works at the site.
• Proactively managing scope, material flow, and securing necessary resources.
• Managing and guiding subcontractors.
• Planning and coordinating Last Planner System (LPS) activities with subcontractors and monitoring progress.
• Facilitating root cause analyses and resolving constraints in mechanical works.
• Contributing to project schedules and maintaining accurate reporting.
• Maintaining strong customer relations and team spirit on‑site.
• Promoting economical construction and cost‑saving working practices.
• Ensuring mechanical as‑built drawings are completed and communicated.
• Safeguarding compliance with HSSE policies and minimising risks in mechanical installations and commissioning.
• Coordinating construction and installation works with Civil and Electrical disciplines using LPS methods.
• Ensuring design and installation instructions are adhered to.
• Arranging inspections of received materials and goods.
• Reviewing invoices from subcontractors and suppliers.
• Maintaining records of change orders and claims.
• Organising and leading weekly mechanical site meetings.
• Ensuring quality control at the site.
• Advising and supporting the client in planning, organising and executing tests.
• Managing and planning safe inspections and test procedures.
• Instructing supervisors and subcontractors on accepted test methods and equipment.
• Ensuring testing of installed equipment and documenting results.
• Managing punch lists.
• Ensuring all required documents are submitted and signed by the customer for plant handover.

• A degree in Mechanical Engineering or a related field, or equivalent professional experience.
• Solid experience in mechanical installation and commissioning, preferably within power plants or large industrial projects.
• Excellent communication skills and confidence in working with both internal and external stakeholders.
• Strong interpersonal and negotiation skills for dealing with subcontractors and customers.
• An organised approach with attention to detail and the ability to prioritise under pressure.
• HSSE awareness and the ability to enforce safety standards on‑site.
• Flexibility and resilience to work abroad for extended periods (250–300 days per year).
• Proficiency in English, both written and spoken.

Wärtsilä is an equal opportunity employer. At Wärtsilä we value, respect and embrace all our differences, and are committed to diversity, inclusion and equal employment opportunities; everyone can succeed based on their job‑relevant merits and abilities.