Principal MEP Mechanical EngineerOutside IR35HybridRole PurposeThe Principal MEP Mechanical Engineer will lead the mechanical engineering delivery of residential and commercial construction projects from pre-construction through commissioning and handover. The role acts as the senior mechanical technical authority, ensuring systems are compliant, coordinated, cost-effective, and buildable while supporting programme, quality, and safety objectives.Key ResponsibilitiesTechnical & Delivery LeadershipLead mechanical engineering delivery across multiple residential and commercial projects.Take ownership of mechanical design development and construction-stage design responsibility on D&B projects.Review, challenge, and manage consultant designs to ensure buildability, value, and programme certainty.Ensure compliance with UK legislation and standards, including:Building Regulations (Part L, Part F, Part O, Part G)CIBSE Guides and Technical MemorandaBS EN standards and relevant British StandardsBSRIA commissioning guidesHeat Network (Metering and Billing) Regulations where applicableProvide technical leadership across HVAC, domestic water services, drainage, above-ground soil and waste, and specialist mechanical systems.Pre-Construction & Design ManagementProvide mechanical input into bids, tenders, and pre-construction activities.Review Employer's Requirements, specifications, and performance criteria.Lead value engineering, alternative solutions, and risk mitigation strategies.Coordinate mechanical design with electrical, public health, structural, architectural, and fire engineering teams.Manage RFIs, design changes, and technical submissions.Site Support & Construction PhaseProvide senior mechanical engineering support to site and project teams.Attend site meetings, coordination workshops, and technical reviews.Support installation quality, inspections, pressure testing, flushing, and commissioning.Resolve on-site mechanical issues, non-conformances, and installation constraints.Oversee commissioning strategies, witnessing, O&M manuals, and handover documentation.Commercial & Programme ManagementWork closely with commercial and procurement teams to manage cost, variations, and supply chain performance.Support procurement strategies for plant, equipment, and specialist subcontractors.Ensure mechanical works align with construction sequencing and programme milestones.Leadership & Team DevelopmentAct as senior mechanical authority and mentor for engineers, design managers, and site teams.Support the development and technical competence of junior mechanical engineers.Promote best practice in safe design, quality assurance, and constructability.Health, Safety & CompliancePromote safe-by-design principles and contractor H&S standards.Fulfil Designer duties under CDM Regulations 2015 where required.Ensure compliance with company QA systems, ISO standards, and statutory requirements.Skills & CompetenciesTechnical SkillsStrong contractor-side experience delivering mechanical services on residential and commercial developments.In-depth knowledge of HVAC systems including:Air-source and ground-source heat pumpsVRF/VRV systemsGas-fired and electric heating systemsMechanical ventilation (MVHR, smoke control interface)Strong understanding of domestic water services, boosted systems, drainage, and water efficiency.Experience with BIM Level 2 coordination using Revit and Navisworks.Professional SkillsStrong leadership and decision-making capability in live construction environments.Clear and effective communication with site teams, consultants, subcontractors, and clients.Commercially aware, pragmatic, and solutions-focused.Ability to manage multiple projects concurrently.Qualifications & ExperienceDegree or HNC/HND in Mechanical Engineering or Building Services Engineering (or equivalent).Chartered Engineer (CEng) or Incorporated Engineer (IEng) status desirable; working towards acceptable.Typically 10+ years' experience in UK building services engineering, with significant contractor-side delivery experience.Proven experience delivering residential and commercial projects through construction and handover.Desirable ExperienceHigh-rise residential schemes (including ventilation, overheating, and fire strategy interfaces).Low-carbon and net-zero technologies, including heat networks and renewable systems.Tier 1 or Tier 2 main contractor environment.MMC, prefabrication, and off-site plant solutions. ersg are an equal opportunities employer; we are committed to promoting equality of opportunity for all job applicants. We do not discriminate against applicants on the basis of age, sex, race, disability, pregnancy, marital status, sexual orientation, gender reassignment or religious background; all decisions are based on merit.

Principal MEP Electrical EngineerOutside IR35Hybrid working Role PurposeThe Principal MEP Electrical Engineer will lead the electrical delivery of residential and commercial construction projects from pre-construction through to commissioning and handover. Acting as the senior technical authority, the role ensures electrical systems are safe, compliant, coordinated, commercially viable, and buildable, while supporting programme and quality objectives.Key ResponsibilitiesTechnical & Delivery LeadershipLead electrical engineering delivery across multiple residential and commercial projects.Take ownership of electrical design development, technical submissions, and construction-stage design responsibility (including D&B projects).Review, challenge, and manage consultant designs to ensure buildability, value, and programme efficiency.Ensure full compliance with UK regulations and standards, including:BS 7671 (IET Wiring Regulations)Building Regulations (Part L, Part B, Part E, etc.)BS 5839 (Fire Detection & Alarm Systems)BS 5266 (Emergency Lighting)BS 9991 / BS 9999 (Residential & Commercial Fire Safety)CIBSE Guides and Technical MemorandaProvide technical leadership on LV/HV systems, lighting, small power, fire alarm, access control, CCTV, data, EV charging, PV, and smart building systems.Pre-Construction & Design ManagementSupport tendering and pre-construction activities, including:Technical input into bids, clarifications, and contractor proposalsReview of Employer's Requirements and Contractor's ProposalsValue engineering and cost optimisationLead design coordination with MEP consultants, architects, structural engineers, and supply chain partners.Manage design change control, RFIs, and technical queries.Ensure electrical designs align with procurement strategy and construction sequencing.Site Support & Construction PhaseProvide senior-level technical support to site teams and project managers.Attend site meetings, design workshops, and coordination reviews.Support installation quality, inspections, testing, and commissioning activities.Assist in resolving on-site technical issues, non-conformances, and clashes.Ensure compliance with commissioning plans, O&M documentation, and handover requirements.Commercial & Programme AwarenessWork closely with commercial teams to manage variations, value engineering, and risk.Support cost forecasting, procurement decisions, and supply chain engagement.Ensure electrical scope is delivered in line with programme milestones and cost targets.Leadership & Team DevelopmentAct as technical authority and mentor for electrical engineers, design managers, and site teams.Support the development of junior engineers and review technical competence.Promote best practice in safe systems of work, quality, and buildability.Health, Safety & CompliancePromote and embed safe-by-design principles and contractor H&S standards.Fulfil Designer duties under CDM Regulations 2015 where applicable.Ensure compliance with company QA systems and ISO standards.Skills & CompetenciesTechnical SkillsStrong contractor-side experience with residential (high-rise and low-rise) and commercial developments.In-depth knowledge of construction-stage electrical engineering and D&B procurement.Experience with temporary electrical systems, builders' works interfaces, and logistics planning.Good working knowledge of BIM Level 2, Revit, Navisworks, and coordination workflows.Professional SkillsStrong leadership and decision-making ability in live project environments.Excellent communication skills with site teams, clients, consultants, and subcontractors.Commercially astute with a practical, solutions-focused mindset.Ability to manage multiple projects and competing priorities.Qualifications & ExperienceDegree or HNC/HND in Electrical Engineering or Building Services Engineering (or equivalent).Chartered Engineer (CEng) or Incorporated Engineer (IEng) status desirable; working towards acceptable.Typically 10+ years' experience in UK building services, with significant contractor-side experience.Proven track record delivering residential and commercial projects through construction and handover.Desirable ExperienceHigh-rise residential schemes (including fire strategy and compliance).EV infrastructure, PV systems, and low-carbon technologies.Experience working with Tier 1 or Tier 2 main contractors.Knowledge of MMC, off-site manufacturing, and modular systems. ersg are an equal opportunities employer; we are committed to promoting equality of opportunity for all job applicants. We do not discriminate against applicants on the basis of age, sex, race, disability, pregnancy, marital status, sexual orientation, gender reassignment or religious background; all decisions are based on merit.

Senior Electrical Design Engineer | Outside IR35 | Hybrid Central London | 6 Months Initial I am on the lookout for a Senior Electrical Design Engineer to work on a major telecoms infrastructure project. This role is ideal for someone who is confident producing high-quality LV power and lighting designs and is looking to take ownership within a fast-moving project environment. As well as someone who is confident in delivering and producing comprehense electrical design packs, including, drawings, calculations and specifications. Duration: 6 months initial Determination: Outside IR35Rate: £45 - £50 per hourTravel: 3x per week in office / 2x work from homeRequired Skills & Experience:Proficiency in AutoCAD 2D, Trimble ProDesign (Amtech), Dialux, and MS OfficeStrong understanding of British StandardsExcellent communication skills and willingness to take responsibilityersg are an equal opportunities employer; we are committed to promoting equality of opportunity for all job applicants. We do not discriminate against applicants on the basis of age, sex, race, disability, pregnancy, marital status, sexual orientation, gender reassignment or religious background; all decisions are based on merit.

We are seeking an experienced Civil Site Manager to support additional capacity on a major electricity transmission infrastructure project. The successful candidate will take full responsibility for the day-to-day management of site activities, ensuring works are delivered safely, efficiently, and in line with programme and quality requirements.This role operates within high-voltage substation environments and requires strong leadership, extensive National Grid experience, and excellent knowledge of safety, quality, and construction management processes.Key ResponsibilitiesManage day-to-day site operations, including site operatives and subcontractorsPlan, develop, and implement safety documentation, including:Construction Phase PlansSite Quality PlansRisk Assessments and Method Statements (RAMS)Prepare daily Safe Systems of Work (SSoW) and allocate works accordinglyProduce and maintain Site Specific Risk Assessments and Method StatementsDeliver site inductions, toolbox talks, and daily briefingsUndertake regular site inspections to ensure compliance with health, safety, and environmental regulationsDevelop and maintain project schedules to ensure timely delivery of worksAttend and contribute to weekly progress meetingsResolve site issues, constraints, and conflicts as they ariseEnsure quality control measures are implemented throughout the projectMaintain accurate site records and documentation, including a detailed site diary covering labour and activitiesLiaise effectively with stakeholders, including contractors, designers, and project teamsEssential RequirementsCandidates must hold the following:National Grid NSI 6 & NSI 8 (Full)SMSTSFirst Aid at WorkSHEA Power / CSCSTemporary Works Coordinator & Temporary Works SupervisorProven experience acting as Principal Contractor Site Manager (PCSM) on National Grid projectsDesirable Experience & QualificationsExtensive knowledge of construction methodologies within the Electricity Transmission industryCompetency to work in substations ranging from 66kV to 400kVKnowledge and experience working under NEC contractsStrong understanding of current health, safety, and environmental legislationExcellent written and verbal communication skillsAbility to manage budgets and programme timescales effectivelyStrong team-working skills across multi-disciplinary project teamsIT literacy, particularly Microsoft Outlook, Word, and ExcelFull UK driving licenceWillingness to travel and work away at project sites as requiredRelevant qualification in construction, mechanical engineering, or electrical engineeringPrevious or current National Grid TP 137.11 authorisationExisting SSE authorisation (minimum CAT1C) advantageousersg are an equal opportunities employer; we are committed to promoting equality of opportunity for all job applicants. We do not discriminate against applicants on the basis of age, sex, race, disability, pregnancy, marital status, sexual orientation, gender reassignment or religious background; all decisions are based on merit.

We are seeking an experienced Civil Site Supervisor to support additional capacity on a major infrastructure project. The successful candidate will be responsible for supervising civil works on site, ensuring all activities are delivered safely, on time, and to the required quality standards.This is a site-based role working on a National Grid environment, requiring strong leadership, technical expertise, and strict adherence to health and safety regulations.Key ResponsibilitiesSupervise and coordinate day-to-day civil works on siteEnsure works are delivered in line with project specifications, programmes, and method statementsMaintain high standards of health, safety, and environmental compliance at all timesAct as a competent person on site in accordance with National Grid requirementsOversee earthworks, drainage, and ducting activitiesManage subcontractors and site operatives effectivelyCarry out site briefings, toolbox talks, and safety inspectionsLiaise with project management and other disciplines to ensure smooth delivery of worksReport progress, issues, and incidents accuratelyEssential RequirementsCandidates must hold the following certifications:SR163 AccreditationNational Grid Competent Person (NSI 8 - Full)SSSTSHSG47 (2-day)Temporary Works SupervisorFull First Aid (3-day)Lift Supervisor or Slinger/Signallerersg are an equal opportunities employer; we are committed to promoting equality of opportunity for all job applicants. We do not discriminate against applicants on the basis of age, sex, race, disability, pregnancy, marital status, sexual orientation, gender reassignment or religious background; all decisions are based on merit.

Due to growth, a major player in the Electrical Engineering space is searching for a HV/MV Project Manager to service multiple MV/HV Electrical projects across Ireland. This role is focused on the planning and execution of high voltage and medium voltage projects, requiring 5 years or more of experience across substations, transmission and distribution networks.This role will see you based in our client's West Dublin offices for 2-3 days per week, with travel to site expected around Ireland. After six months, there is the possibility for working from home 2-3 days per week. ersg are an equal opportunities employer; we are committed to promoting equality of opportunity for all job applicants. We do not discriminate against applicants on the basis of age, sex, race, disability, pregnancy, marital status, sexual orientation, gender reassignment or religious background; all decisions are based on merit.