Principal Electrical Engineer - Data CentresUp to 70,000 + Benefits Central London Flexible Hybrid An established UK engineering consultancy-independent for over 70 years- is expanding its specialist Data Centre team and is seeking a Principal Mechanical Engineer with strong technical design experience. This is an opportunity to join a respected, people-centric business with an average staff tenure of 12 years, a genuine open-door culture, and a commitment to continuous progression without rigid promotion cycles.Why Join?A genuinely supportive cultureNo annual reviews or fixed pay-rise cycles - promotions and salary increases happen as soon as they''re earned."No stupid questions" philosophy - learning is encouraged and supported.Highly selective hiring focused on technical excellence, ensuring you work alongside capable, high-quality engineers.Flexible hybrid working: 2 days in the office (Tue/Thu typically; 3 days initially for onboarding and collaboration).Long-standing leadership that trusts its engineers and provides autonomy. Strong Benefits Package25 days holiday + Christmas shutdown (rising to 28 after 6 years)Contributory private healthcareStandard pensionEAP including financial and legal supportAnnual wellbeing day: a full team day out (walks, tours, social events)Chartered Engineer mentorship available (including from a recognised CIBSE Data Centre leader)About the Data Centre TeamThe London-based Data Centre group consists of a core team of five permanent engineer