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Costain Group PLC

Senior Mechanical Engineer – Nuclear Handling

Costain Group PLC

. Deliver key elements of engineering design packages within a multidisciplinary environment .

Posted 10/22/2026full-timeManchester • United KingdomSeniorWebsite

Core Competencies

Role fit
Core Competencies

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Demonstrates expertise in mechanical engineering design, including HVAC and building services design, while effectively managing project resources and delivering high-quality engineering outputs. Proficient in regulatory compliance and technical guidance, with a strong focus on collaboration and communication across multidisciplinary teams.

Highest-signal resume keywords
Mechanical Engineering DesignProject ManagementRegulatory ComplianceTechnical GuidanceInterdisciplinary Collaboration

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills
HVAC DesignMechanical Equipment SpecificationsPumping System CalculationsPressure Equipment Design CalculationsMechanical Equipment Stress AnalysisDesign Codes and StandardsEngineering Design SystemsCalculation ToolsTechnical Bid EvaluationsDesign Justification Reports
Soft Skills
Strong OrganisationCommunication SkillsTime-Management SkillsCollaborative Approach
Certifications & Qualifications
Degree in EngineeringProfessional RegistrationValid Safety PassportBPSS HolderChartered Engineer (CEng)Incorporated Engineer (IEng)SC Security Clearance
Industry Keywords
Nuclear Mechanical HandlingUK Regulatory FrameworksCDMPESRMachinery Safety RegulationsATEXBS ENAPIASMECIBSE

About the role

Key responsibilities & impact
  • Deliver key elements of engineering design packages within a multidisciplinary environment
  • Produce and check complex engineering design deliverables, calculations, specifications, and scopes of work
  • Prioritise and sequence work and manage engineering resources
  • Complete assigned work packages to cost, time, and quality standards
  • Manage change and coordinate resource allocations
  • Coordinate project activities between team members
  • Lead interdisciplinary design reviews, technical meetings, and presentations
  • Support project reporting on budgets, programme KPIs, governance, and risks
  • Collaborate with suppliers, client teams, designers, and construction teams to deliver robust, safe-by-design outputs
  • Provide technical guidance, mentoring, and support to engineers and junior team members
  • Deputise for Principal Engineers during absences when required
  • Deliver mechanical equipment specifications and datasheets, enquiry and purchase requisitions, technical bid evaluations, vendor documentation reviews, and FAT attendance
  • Specify and design mechanical handling and lifting equipment
  • Perform HVAC and building services design, plant and mechanical equipment layouts, pumping system calculations, pressure equipment design calculations, and mechanical equipment stress analysis

Requirements

What you’ll need
  • Degree qualified in a relevant engineering discipline (ideally 2:1 or better) or equivalent educational experience
  • Professional registration achieved with a recognised industry institution
  • Valid safety passport or industry equivalent
  • BPSS holder, capable of obtaining SC security clearance
  • Substantial engineering experience across the engineering lifecycle, from tendering to close-out, within a design consultancy or contractor environment
  • Digitally proficient in multiple engineering design systems, calculation tools, and software
  • Ability to report progress, risks, opportunities, and changes accurately, and support estimate development
  • Strong working knowledge of UK regulatory frameworks, including CDM, PESR, Machinery Safety Regulations, and ATEX
  • Strong working knowledge of relevant design codes and standards, including BS EN, API, ASME, WIMES, CIBSE, and ASHRAE
  • Experience in Nuclear Mechanical Handling
  • Experience with Technology Readiness Level, single- and multi-discipline design reviews, Design Justification Reports, mechanical handling diagrams, design proposal drawings, plant and building layouts, and equipment specifications and datasheets
  • Strong organisation, communication, and time-management skills with a collaborative approach
  • Desirable: Chartered Engineer (CEng) or Incorporated Engineer (IEng) status
  • Desirable: Additional technically focused qualifications or training
  • Desirable: SC security clearance holder
  • Desirable: Supply chain management and site/construction environment experience
  • Desirable: Multi-sector project experience and ability to work independently
  • Desirable: Specialist mechanical engineering design and delivery experience
  • Desirable: Experience with Costain clients such as Urenco Capenhurst

Benefits

Comp & perks
  • Permanent employment or fixed-term contract options
  • Hybrid working arrangement
  • Office attendance approximately 3 days per week
  • Occasional visits to other offices and sites in the Northwest region
  • Professional development through additional technical qualifications/training
  • Opportunity to contribute to Costain’s specialist Nuclear Mechanical Handling capability