Job Description

ISS
Mechanical Engineer
Contract: Government
Location: London, SW1A 2HH
Hours of work: 40
Contract Type: Permanent
We are seeking a skilled and motivated Mechanical Engineer to join our team, delivering world-class building maintenance services across two modern, adjacent office buildings. This role is key to ensuring our client's facilities remain safe, efficient, and fully operational.

You will be responsible for providing high-quality mechanical and building services maintenance, including fault finding, repairs, installations, and preventative work.
Working as part of a professional facilities team, you will take ownership of your work, ensuring systems operate to optimum performance levels while maintaining compliance with all relevant standards, regulations, and company policies.
Key Responsibilities

• Perform scheduled inspections, preventative and corrective maintenance on all mechanical systems and equipment.
• Carry out fault finding, repairs, adjustments, and testing in accordance with manufacturer's instructions and best practice.
• Support mechanical installations, including pumps, valves, air source heat systems, fan coils, and AC units.
• Observe systems in operation, diagnose causes of malfunction, and implement timely repairs.
• Manage own workload effectively, prioritising reactive and PPM tasks to meet deadlines and service standards.
• Maintain accurate documentation of work carried out, including records, permits, and reports.
• Ensure all activities comply with health and safety regulations and company procedures.
• Oversee and monitor contractors where required, ensuring compliance and high-quality workmanship.
• Identify and recommend improvements to systems, processes, and service delivery.

Professional and Personal Competencies/Qualifications

• Strong background in mechanical building services maintenance within commercial environments.
• Experienced in PPM and reactive maintenance, plant room systems, and mechanical fault diagnosis.
• Knowledge of pumps, valves, soldering, fan coils, AC units, and air source heat systems.
• Experience with health & safety practices, risk assessments, and method statements.
• Evidence of competence in managing high-risk mechanical works and issuing permits to work.

Skills & Attributes

• Self-motivated, proactive, and detail-oriented.
• Strong problem-solving and decision-making skills.
• Excellent communication and teamwork abilities.
• Professional approach with a focus on quality and service excellence.
• Organised, reliable, and capable of managing multiple priorities effectively.

The Company
ISS is a world-leading workplace and facility management company, connecting people and places to make the world work better. Working with customers day by day, side by side, we understand every aspect of the user experience.
Through a unique combination of intelligent solutions, high standards and people who care, to help our customers achieve their purpose, whether it's hospitals healing patients, businesses producing the next great innovation, or airports bringing passengers home to their families. ISS is committed to doing business the right way, taking its corporate responsibility very seriously. Our passion is people.
We offer you a challenging and exciting career in an organisation with people at its heart. In ISS, everyone has the opportunity to develop, grow and make a difference. #ISSGreatPeople #ISSTalent #PeopleMakePlace
ISS is proud to be a diverse and inclusive employer.
ISS welcomes all applicants regardless of age, disability, gender identity or gender reassignment, marital or civil partnership status, pregnancy or maternity, race (which includes race, colour, nationality, ethnic or national origin and caste), religion or belief, sex, sexual orientation or educational background.
We are a Disability Confident Committed (Level 2) employer, proudly supporting and promoting inclusive hiring practices in line with the UK government's Disability Confident scheme.
Our passion for inclusivity and diversity makes ISS a more creative, productive and happy place to work.
If you have any further queries regarding this role, please contact the Resourcing Team by emailing
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Skills Required