About the job Teamwork where everyone’s on board. Embrace it today. About The Role The Senior Design Engineer – Electrical plays a pivotal role in the design, specification and technical assurance of electrical power, mechanical cooling, and associated infrastructure systems to support Boldyn’s Telco, Enterprise, Offshore, Venues, Special Events, Wi-Fi, and NHIB programmes. The Senior Design Engineer – Electrical will work across M&E projects and is therefore expected to demonstrate both electrical and mechanical competence. Reporting to the Head of Engineering, this role provides advanced embedded, in-house specialist engineering capability, replacing our reliance on external electrical and mechanical consultants. The role encompasses a Technical Design Authority (TDA) status and compliance with UK regulations / standards, buildability and operational resilience of all electrical and mechanical infrastructure that supports our systems. The role covers the design and technical assurance of Main Equipment Rooms (MER), remote unit locations, rooftop / mast and street infrastructure, ensuring systems are safe, resilient, compliant with UK legislation, and aligned with mobile network operator (MNO) equipment requirements. Working alongside and providing technical leadership to Design Engineers, and in close collaboration with Delivery Managers, the Senior Design Engineer – Electrical leads a right first time design ethos, sets technical standards, and mitigates delivery and compliance risk across power and cooling designs throughout Boldyn’s portfolio. The role also provides subject matter expertise, design governance, and mentoring support to develop capability within the wider design team. What You’ll Be Doing Electrical Power System Design & Regulatory Compliance Act as TDA for electrical and mechanical engineering, buildability, and compliance. Design and dimension low-voltage electrical power systems for telecoms infrastructure in accordance with UK Building Regulations, BS 7671 (IET Wiring Regulations ), and BS EN 50174 (ICT & Telecoms Cabling). Develop large scale power solutions for Multi-Operator and high-volume low power solutions for Remote Unit locations and Smart City infrastructure on street furniture assets. Ensure compatibility with MNO power requirements, including PSUs, BBUs and RRUs from Nokia, Ericsson, and legacy Huawei platforms. Coordinate designs with host building electrical infrastructure, landlords, Distribution Network Operators, and site M&E representatives. Ensure designs consider Building Regulations, Fire Authority requirements and Telecoms Security Act where. Mechanical Cooling & Ventilation System Design Design and size cooling and ventilation systems for telecoms environments in accordance with, UK Building Regulations Part F (Ventilation ), Part L (Energy Efficiency), BS EN 378 (Refrigeration S ystems and H eat P umps ), and BS EN 16798 (Ventilation and I ndoor E nvironmental P erformance). Develop cooling solutions supporting thermal loads from 5kW up to 1 25 kW, including a ir conditioning systems and f orced air and hybrid cooling solutions. Ensure cooling systems are su itable for continuous 24/7 operation, a ppropriately resilient and maintainable, a ligned to actual equipment heat dissipation and duty cycles. Support energy efficiency objectives without compromising network resilience. Main Equipment Room & Base Station Hotel Fit-Outs Lead the electrical and mechanical design and integration of MER fit-outs, including power distribution and containment, cooling and ventilation systems, equipment layouts, access clearances, and maintenance zones. Integrate physical security measures, including controlled access, segregation of operator equipment and interfaces with monitoring systems. Coordinate fire detection and life safety systems, ensuring alignment with Building fire strategie s, BS 5839 (Fire D etection and A larm S ystems) and BS 5266 (Emergency L ighting). Ensure appropriate fire stopping and compartmentation where services penetrate fire-rated boundaries. Verify the functionality, reliability, and safety of integrated electrical and mechanical fit-outs through testing and troubleshooting. Earthing, Bonding & Lightning Protection Design earthing and bonding systems in accordance with, BS 7671 (IET Wiring Regulations) and BS EN 50174 ( ICT & Telecoms Cabling ). Design lightning protection systems in accordance with BS EN 62305 (LPS). Ensure protection of personnel, equipment and service continuity for masts, rooftop structures and outdoor cabinets and exposed infrastructure. Design Documentation, Specification & Technical Assurance Coordinate with multidisciplinary teams and p roduce fully detailed, construction-ready electrical and mechanical designs. Prepare technical specification documents suitable for tender, procurement, and installation. Develop Bills of Materials (BOMs) and support cost and value engineering reviews. Review, check and technically assure designs produced by internal teams and third parties. Support the Solution Design Manager with formal design assurance, technical reviews, and sign-off activities. Identity opportunities for innovation to drive efficiencies for Boldyn and our customers. Safety, CDM & Statutory Compliance Support CDM 2015 designer duties, ensuring design risks are identified, mitigated, and communicated to the Principal Designer. Embed Safety by Design principles, ensuring systems are safe to install, operate, maintain, and decommission. Support engagement with Building Control, fire authorities and other statutory stakeholders where. Standardisation & Internal Capability Development Develop and maintain standard electrical and mechanical design templates, reference architectures, and specifications. Standardise power and cooling solutions across site typologies to improve quality, consistency, and delivery efficiency. Act as an internal M&E technical authority, reducing dependency on external consultants. Support continuous improvement through lessons learned and best-practice application. What You’ll Bring Essential: Minimum 7 years’ M&E experience in telecoms, wireless or related infrastructure design. Degree-qualified in Electrical Engineering, Building Services Engineering, or a closely related discipline. Strong working knowledge of UK design standards, including : BS 7671 (IET Wiring Regulations) UK Building Regulations (Parts A, B, F and L) BS 5266 and 5839 BS EN 378, BS EN 16798, BS EN 50174, and BS EN 62305 Demonstrable experience designing three-phase power systems, resilient architectures and high-density cooling solutions for telecoms or mission-critical environments. In-depth understanding of MNO equipment power and cooling requirements, including Transmission kit, BBUs, RRUs and PSUs. Proven capability producing technical specifications, detailed designs and BOMs. Experience acting as an internal technical authority, engaging directly with building engineers, landlords and statutory bodies. Skilled communicator with the ability to engage technical and non-technical stakeholders Desirable Chartered Engineer (CEng) or Incorporated Engineer (I E ng). Experience delivering telecommunication equipment rooms, MERs or base station hotel fit-outs. Experience with street furniture cabinets and street lighting columns. Experience in Earthing, Bonding & Lightning Protection Formal training in critical infrastructure, fire systems, or mission-critical environments. About Us At Boldyn Networks, we’re reimagining the future of interconnectivity. Our network solutions are solving some of tomorrow’s greatest challenges. We are one team across the globe. Always listening. Learning. We value different perspectives and challenge each other to be our best. Here, you can change lives today and create a better tomorrow. Why work with us? We’re large enough to deliver and maintain large-scale operations, giving you the opportunity to work on exciting projects and expand your skills. You’ll be surrounded talented colleagues who thrive on solving problems, just like you. Together, you’ll make your mark on projects that matter and find new strengths along the way. We also offer: 17,000 LinkedIn Learning courses Flexible working opportunities Parental leave with up to 20 weeks paid at full salary Holiday allowance starting at 25 days rising with length of service 4 days off each year to volunteer Ready to apply? Are you ready to create an impact that will last for generations? Join us at Boldyn Networks today. Hit apply and follow the instructions to get started. Diversity recognises the ways we differ. Our backgrounds, perspectives, and experiences. What makes us unique. And it’s important to us, to our future. To build a workforce that’s representative of the societies we serve. So that we can listen, learn and understand how to solve our customers’ problems in the smartest ways possible. We are looking for passionate people from a range of backgrounds and welcome applications from any race, age, gender, background, or religion.