Senior Mechanical Design Engineer (Data Centres) – London or Bicester

Company: ENGIE
Apply for the Senior Mechanical Design Engineer (Data Centres) – London or Bicester
Location: London
Job Description:

Overview

As Senior Mechanical Design Engineer, you will lead medium-size projects from development through coordination of mechanical installations, working with clients and contractors on design and build contracts. You will contribute to low-energy, zero-carbon building aims and collaborate with cross-functional teams to deliver robust, compliant engineering solutions. Your role combines technical design leadership with client-facing responsibilities to drive project success and value for a global consultancy.

Pay / Benefits

  • 23 days annual leave rising to 28 days
  • Hybrid Working
  • Contributory pension scheme
  • Healthcare scheme
  • Non-contractual bonus awards
  • Training sponsorship

Responsibilities

  • Lead the run of medium-size projects and manage progress across multiple concurrent assignments
  • Engage with clients to develop, design and coordinate mechanical project services
  • Develop specifications for controls, instruments and operating systems for building services
  • Survey, test and report on existing installations to inform design decisions
  • Ensure manufacturing, construction, installation and testing meet specifications and customer requirements
  • Make day-to-day project decisions and provide guidance to clients and project teams
  • Represent the company at technical meetings with customers, professional teams and contractors
  • Perform engineering calculations to ensure drawings meet standards and regulations
  • Quality-check and validate designs and specifications, mentoring trainees and engineers

Key requirements

  • BEng (minimum); MSc is a plus
  • MCIBSE/MIEE or HNC/HND with relevant experience; working towards Chartered Engineer status
  • Competence in specification design/drawing for multiple building types
  • Strong knowledge of health and safety issues and BS standards
  • Proficient in MS Office; able to use IT-based calculation/spreadsheet tools
  • Ability to prioritise workload and meet deadlines
  • Experience in consulting or construction and international project environments
  • Ethical conduct per company guidelines
  • client facing
  • strong communication
  • time management
  • building services mechanical design
  • design and coordination of mechanical installations
  • engineering calculations and validation

Posted: September 14th, 2026