Senior Building Services Engineer

Job Description: Senior technical leadership role (Senior Engineer) Location: Birmingham (Hybrid Working) Office Requirement: Minimum 3 days per week in the office Contract: Permanent, Full-time Reporting to: Technical Director Role Type: Senior Project Delivery About the Company We are a specialist engineering consultancy operating in the renewable thermal energy, mechanical building services, and low-carbon heating and cooling sectors. Since our establishment, we have experienced consistent year-on-year growth and have built a strong reputation for delivering technically rigorous, design-led, and practical engineering solutions. Our leadership team brings extensive experience in heat pump and thermal engineering, with a track record spanning the design, delivery, commissioning, optimisation, maintenance, and troubleshooting of large-scale low-carbon heating systems. This practical experience informs our approach to engineering design and project delivery. As our portfolio continues to expand, we are seeking a senior engineering professional to support the development of our growing design team and help shape the next phase of our growth. Role Overview We are seeking a Senior Engineer to strengthen our core design capability and take a leading role in project delivery, technical governance, client engagement, mentoring, and team leadership. This role combines senior heat pump engineering, mechanical systems design, and day-to-day technical project leadership. You will act as a lead design engineer and technical authority, owning engineering outputs, coordinating multidisciplinary inputs, and managing client interfaces. Senior Engineers remain actively involved in detailed design while taking responsibility for quality, coordination, and programme delivery. Depending on experience, the role may be appointed at Senior or Principal Engineer level, with additional commercial and technical governance responsibilities at Principal level. Key Responsibilities Technical Leadership & Engineering Design Lead delivery of heat pump and HVAC system designs across Feasibility and concept design Scheme design, FEED, and detailed design Delivery, commissioning, and operational support Produce and review: Feasibility studies, technical reports, and specifications Concept designs, layouts, and system options Detailed design documentation and calculations Develop and review designs for: Plantroom layouts (2D and 3D) System schematic drawings Size and select: Main HVAC plant and equipment Ancillary pipework equipment Develop and review: Mechanical specifications and schedules Carry out and review: Heat loss and heat gain calculations Energy performance and operational data analysis Create, maintain, and review engineering calculation spreadsheets Project & Client Leadership Act as the lead technical interface with clients Build and maintain strong client relationships Lead day-to-day project delivery across internal and external project teams Review and understand: Client specifications Employer requirements and work instructions Identify potential non-compliances and develop mitigation strategies Manage Requests for Information (RFIs) and technical clarifications Review, approve, and issue meeting minutes and technical notes Support project management through: Scope definition Programme management Internal budget control Support variation management where project scope changes occur Lead project handover activities Design Coordination & Quality Assurance Lead mechanical design coordination with: Architects Electrical, structural, and controls designers Support detailed-stage coordination while maintaining design intent Review and approve developed and detailed designs Ensure all designs are: Technically robust Coordinated across disciplines Compliant with relevant standards and guidance Participate in external design reviews and technical validation exercises Site, Installation & Operational Support Attend and contribute to: Site surveys Design development meetings Carry out or support: Installation inspections Snagging activities System troubleshooting and remedial strategy development Support: Remote monitoring Seasonal commissioning Review of as-built documentation Mentoring & Team Development Mentor and support Intermediate and Junior Engineers Review calculations, drawings, and reports produced by junior team members Provide structured technical feedback and guidance Contribute to the development of: Design standards Calculation tools Engineering workflows and best practices Person Specification Essential BEng / MEng / MSc in Mechanical Engineering, Building Services Engineering, or a related discipline 10–15 years' professional experience in mechanical building services, geothermal systems, or low-carbon energy system design Strong technical capability in: Mechanical building services design HVAC systems Low-carbon heating and cooling systems Knowledge of geothermal and ground source heat pump systems would be advantageous Proficient in: Building heat loss and heat gain calculations HVAC system design and equipment sizing Systems hydraulics and thermodynamics Strong working knowledge of industry standards and guidance Proficient in: AutoCAD Microsoft Office Suite Strong technical writing and client presentation skills Comfortable working within a small consultancy environment with a high degree of responsibility Right to work in the UK Desirable Chartered Engineer (CEng) status or working towards chartership Consultancy or client-facing experience Experience supporting projects through construction, commissioning, and operation Experience supervising or line-managing engineers What We Offer * A senior, influential role within a specialist engineering consultancy * Technically challenging low-carbon energy projects * Real ownership of engineering design and technical decisions * Direct client engagement and project leadership opportunities * A collaborative, technically focused team culture * Hybrid working arrangements * Competitive salary * Clear progression opportunities and broader technical leadership roles * 22 days annual leave plus public holidays, increasing with length of service * Private medical insurance (subject to qualifying period) * Company contributory pension scheme