Senior Mechanical Engineer

Final date to receive applications: 8 October 2026

Department: Engineering & Operations

Employment Type: Permanent - Full Time

Location: Stockton on Tees

Our Business

px PEOPLE, their commitment to excellence, innovation and teamwork, are the reason for px Group's continuing growth and success story. We aim to be the elite provider of operations management, engineering services and energy management solutions in high hazard, highly regulated industries nationally and as we grow, across Europe and globally. For more information visit

The Opportunity

We are now recruiting for a Senior Mechanical Engineer.

The Senior Mechanical Engineer is a key role for the safe, reliable and compliant operations, through effective delivery of all mechanical systems and associated equipment across stipulated px operated sites. Effectively ensuring compliance, safety, integrity, reliability and commercial considerations.

The role includes travel in Europe and beyond.

You’ll be supported with personalised on the job training, coaching, mentoring and twice-yearly development and performance reviews to help maintain & develop your contributions and competence.

• Manage assigned projects and tasks to provide professional mechanical engineering support to stipulated px sites, supporting and delivering asset integrity, reliability, statutory compliance and improvement.
• The Senior Mechanical Engineer will also complete local site support based upon business requirements.
• In line with business requirements, set and implement effective mechanical engineering systems, strategies, projects and processes ensuring required performance and compliance are delivered and maintained.
• Provide appropriate guidance and support to px personnel and customers on mechanical engineering matters including shutdowns, unplanned/planned events, incidents, projects, modifications and improvement activities.
• Ensure technical documentation (procedures, drawings, instructions, guidance, systems) are accurately and consistently sourced, stored, updated and communicated.
• Assist in providing functional design specifications on any new plant developments or projects, ensuring compliance with all relevant legislation and standards
• Complete assigned audits communicating outcomes and driving actions.
• Deliver projects (capital, revenue, improvement & change management) consistent with px project management procedures, ensuring changes are raised and approved via the px 'Management of Change' process. When required, support client managed projects.
• Lead and manage assigned px, contract and other personnel, setting and maintaining standards.
• More details can be found on the role profile attached.

• Degree in Mechanical Engineering discipline, or equivalent
• Relevant experience in the process, fuel terminal, refinery or power generation environment including:
• Maintenance & contract management
• Outage / shutdown management
• Operations interface, policies & procedures
• PSSR, legislative, best practice standards and insurance compliance.
• Ability to work cross functionally delivering policies, initiatives and compliance with company and legislative requirements.
• Experience of working in and contributing to a 24/7 operational environment.
• Experience working on projects with associated project controls.
• Experience of managing budgets, KPIs and development of revenue and capital papers to secure funding.

• 25 days holiday plus bank holidays
• Contribution towards eye test and glasses
• Online company discount benefits site including cinema tickets and gym membership discount
• Long Service Awards
• Employee recognition scheme – ELITE Awards
• Employee Assistance Programme
• Flexible Benefits Package
• Onsite parking

We are committed to equality of opportunity for all staff and 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.

Please note this role may close early or be extended depending on the volume of applications.