Design Manager

📍 Job Overview

Job Title: Design Manager

Company: Costain Group

Location: Camberley, Surrey, United Kingdom

Job Type: Full time

Category: Infrastructure Design Management / Project Engineering

Date Posted: 2026-03-16T12:42:31

Experience Level: 5-10 Years

Remote Status: Hybrid

🚀 Role Summary

• Oversee and manage all design aspects for water and wastewater projects, ensuring successful project delivery within scope, budget, and timeline.

• Lead and mentor a team of designers, fostering a collaborative environment focused on technical excellence and innovation.

• Drive the implementation of safe, sustainable, and efficient design solutions in alignment with company and client objectives.

• Contribute to bid processes by providing expert design management input and strategic planning.

• Integrate digital and smart infrastructure solutions to enhance project performance and client value.

📝 Enhancement Note: This role is positioned within a major infrastructure delivery context, specifically supporting Thames Water's AMP7/AMP8 initiatives. The Design Manager will be instrumental in bridging the gap between strategic project goals and the detailed engineering execution, requiring a strong blend of technical acumen, project management discipline, and leadership capability. The hybrid working model suggests a need for strong autonomous work habits alongside effective team collaboration.

📈 Primary Responsibilities

• Accountable for the end-to-end design process for assigned schemes or project sections, from conceptualization through to construction-ready documentation.

• Manage design consultants and internal engineering teams, ensuring adherence to project specifications, quality standards, and regulatory requirements.

• Develop and maintain comprehensive design schedules, proactively identifying and mitigating potential risks and delays.

• Ensure all designs are compliant with safety regulations, environmental standards, and sustainability targets, including decarbonization efforts.

• Collaborate closely with project management, commercial, and construction teams to ensure seamless integration of design with overall project execution.

• Provide technical leadership and guidance, fostering a culture of continuous improvement in design methodologies and processes.

• Contribute to the development of innovative design solutions that enhance asset performance, operational efficiency, and client satisfaction.

• Support senior management in bid activities, including scope definition, design strategy, and cost estimation for design services.

• Uphold Costain's values and commitment to smart infrastructure solutions throughout all design activities.

📝 Enhancement Note: The core responsibility revolves around holistic design accountability on projects. This implies not just managing the technical output, but also the commercial, safety, and sustainability implications of design decisions. The emphasis on "safe, sustainable, and efficient to construct" highlights a practical, outcome-oriented approach to design management, requiring a keen understanding of constructability and operational efficiency.

🎓 Skills & Qualifications

Education:

• Bachelor’s degree in Engineering, Construction Management, or a related field.

Experience:

• 5-10 years of progressive experience in design management, project engineering, or a similar role within the infrastructure, water, or utilities sector.

• Proven track record of successfully managing design aspects for complex capital projects, including civil new builds and capital maintenance.

Required Skills:

• Design Management: Comprehensive understanding of the design lifecycle, from concept to detailed design and construction.

• Project Delivery: Proven ability to manage multiple design streams within a project context, ensuring on-time and within-budget delivery.

• Technical Compliance: Strong knowledge of relevant engineering standards, building codes, and regulatory frameworks within the UK water sector.

• Safety & Sustainability: Demonstrated commitment to embedding safety-by-design principles and sustainable engineering practices.

• Budget Management: Experience in managing design budgets, forecasting costs, and controlling expenditures.

• Engineering Acumen: Solid understanding of civil engineering principles and construction methodologies relevant to water and wastewater infrastructure.

• Stakeholder Management: Ability to effectively communicate and collaborate with internal teams, external consultants, and clients.

Preferred Skills:

• Chartered member of a relevant professional institute (e.g., ICE, IStructE, CIWEM).

• Project Management certifications (e.g., APM, PMI) or Risk Management training.

• Experience with digital design tools, BIM (Building Information Modelling), and data analytics for design optimization.

• Familiarity with framework agreements and their management.

📝 Enhancement Note: The requirement for a degree or apprenticeship with significant experience, combined with 5-10 years of experience, positions this as a mid-to-senior level role. The "driving" requirement is a practical necessity for site visits and client engagements in the Thames Valley/South regions, underscoring the hands-on nature of the role. Chartered status and specific project management training are significant advantages, indicating a preference for candidates with formally recognized expertise.

📊 Process & Systems Portfolio Requirements

Portfolio Essentials:

• Documented evidence of successfully managed design projects, showcasing scope, complexity, and key deliverables.

• Case studies demonstrating effective management of design teams, including challenge resolution and performance enhancement.

• Examples of design documentation, such as technical reports, drawings, specifications, and design risk assessments.

• Evidence of contributions to bid processes, including design strategy development and input into tender submissions.

Process Documentation:

• Examples of design management plans, outlining methodologies for planning, execution, monitoring, and control of design activities.

• Workflow diagrams illustrating design review, approval, and change management processes.

• Documentation showcasing the implementation of BIM or other digital design tools for enhanced collaboration and efficiency.

• Records of design risk identification, assessment, and mitigation strategies.

• Performance metrics and reports used to track design progress, quality, and adherence to budget.

📝 Enhancement Note: For a Design Manager role, the portfolio should highlight not just the final design outputs, but the process by which those outputs were achieved. This includes demonstrating structured approaches to managing design teams, mitigating risks, ensuring compliance, and integrating client requirements. The emphasis on "safe, sustainable, and efficient to construct" means portfolio pieces should ideally illustrate how these factors were explicitly considered and addressed in the design management process.

💵 Compensation & Benefits

Salary Range: £55,000 - £75,000 per annum (estimated)

Benefits:

• Competitive annual leave allowance.

• Company pension scheme with generous employer contributions.

• Life assurance.

• Health and well-being programs, including access to mental health support.

• Professional development opportunities, including training and support for professional qualifications.

• Opportunity to work on high-profile, impactful infrastructure projects.

• Hybrid working arrangement offering flexibility.

Working Hours:

• Standard working hours are 40 hours per week.

• Flexibility may be required to meet project demands, with potential for occasional out-of-hours work or travel.

📝 Enhancement Note: Based on industry benchmarks for Design Managers with 5-10 years of experience in the UK construction and infrastructure sector, particularly in the South East region, a salary range of £55,000 to £75,000 is estimated. This includes consideration for the hybrid work model, company car allowance, and the significant responsibilities associated with managing large-scale projects for a client like Thames Water. The estimation methodology involves cross-referencing salary data from reputable UK job boards and industry salary surveys for similar roles and experience levels.

🎯 Team & Company Context

🏢 Company Culture

Industry: Infrastructure Solutions, Construction, Engineering, Utilities. Costain operates across energy, water, transportation, and defence sectors, focusing on integrated, leading-edge, smart infrastructure solutions.

Company Size: Large (typically 5,000+ employees, based on broader Costain Group information). This scale offers stability and opportunities for diverse project involvement.

Founded: Costain Group was founded in 1865, indicating a long history and deep expertise in the industry.

Team Structure:

• The Design Manager will be part of a project-based team, reporting to a Principal or Senior Design Manager.

• This role operates within a wider team of design managers, suggesting a collaborative peer group for support and knowledge sharing.

Methodology:

• Data-Driven Design: Emphasis on using data and digital tools to inform design decisions, optimize performance, and ensure efficiency.

• Integrated Project Delivery: Focus on seamless collaboration across all project phases and disciplines to achieve optimal outcomes.

• Smart Infrastructure: Commitment to leveraging technology and innovation to create intelligent, sustainable, and resilient infrastructure solutions.

• Safety and Sustainability: Embedded principles that guide all operational and design processes.

Company Website: https://www.costain.com/

📝 Enhancement Note: Costain's extensive history and focus on "smart infrastructure" suggest a culture that values both established engineering practices and forward-thinking innovation. The emphasis on integrated solutions implies a collaborative environment where different disciplines must work harmoniously. The company's size indicates a structured approach to project management and operations, with defined processes and reporting lines.

📈 Career & Growth Analysis

Operations Career Level: Mid-to-Senior Level. This role is critical for project success, requiring significant autonomy and responsibility for design outcomes. It sits above junior design engineers and below senior/principal design management roles.

Reporting Structure: Reports to a Principal or Senior Design Manager, indicating a clear hierarchical structure within the design management function. This provides a pathway for mentorship and development.

Operations Impact: The Design Manager has a direct and significant impact on project success by ensuring designs are technically sound, safe, sustainable, cost-effective, and constructible. Their decisions influence project timelines, budgets, risk profiles, and ultimately, the client's satisfaction and the long-term performance of the infrastructure assets.

Growth Opportunities:

• Progression to Principal/Senior Design Manager: With proven success, the individual can advance to manage larger, more complex projects or lead teams of design managers.

• Specialization: Opportunity to develop expertise in specific areas of water/wastewater engineering, digital design, or sustainable infrastructure.

• Project Leadership: Potential to move into broader project management roles, leveraging design expertise.

• Continuous Professional Development: Support for obtaining or maintaining professional chartered status and pursuing further training in relevant technical or management areas.

📝 Enhancement Note: This role offers a clear career progression path within a large, established infrastructure company. The design management function is crucial to Costain's "smart infrastructure solutions" strategy, meaning strong performers can expect significant visibility and opportunities for advancement. The emphasis on continuous learning and professional development is a key indicator of the company's investment in its employees' growth.

🌐 Work Environment

Office Type: Hybrid. Employees are expected to work from the office and remotely, balancing the need for face-to-face collaboration with the flexibility of remote work.

Office Location(s): Camberley, Surrey, United Kingdom. This location serves as a hub for operations supporting Thames Water projects in the Thames Valley and Thames South regions.

Workspace Context:

• Collaborative Spaces: The office likely features meeting rooms, project spaces, and informal areas designed to facilitate team discussions and problem-solving.

• Technology Enabled: Access to necessary IT infrastructure, software, and communication tools to support both office-based and remote working.

• Team Interaction: Opportunities for regular interaction with other design managers, project teams, and engineering staff, fostering a supportive and knowledge-sharing environment.

• Field Visits: The role necessitates regular site visits to project locations, requiring adaptability to different working environments.

Work Schedule:

• Standard 40-hour work week, with flexibility expected to manage project deadlines.

• The hybrid model allows for a blend of structured office time for collaboration and focused remote time for individual tasks.

📝 Enhancement Note: The hybrid nature of the role acknowledges the evolving workplace trends. For a Design Manager, this means being adept at managing communication and collaboration across different work settings, ensuring that project momentum is maintained regardless of physical location. Regular travel to project sites is an inherent part of the role, reinforcing the need for flexibility and strong organizational skills.

📄 Application & Portfolio Review Process

Interview Process:

• Initial Screening: A review of your CV and application to assess suitability against the core requirements.

• First Interview: Likely a technical and behavioral interview with the hiring manager (Principal/Senior Design Manager) and potentially an HR representative. Focus on your design management experience, technical knowledge, and approach to challenges.

• Second Interview/Assessment: May involve a more in-depth technical discussion, a presentation based on a case study (potentially related to design management or a hypothetical project scenario), or an assessment center style activity. This stage will evaluate your problem-solving skills, strategic thinking, and communication abilities.

• Final Interview: Potentially with a senior leader within the operations or delivery division to assess cultural fit and strategic alignment.

Portfolio Review Tips:

• Quantify Achievements: Whenever possible, use numbers and data to demonstrate the impact of your design management. For example, "Reduced design delivery time by 15%," or "Managed a design budget of £X million."

• Showcase Process: Highlight your methodologies for managing design teams, mitigating risks, ensuring quality, and integrating safety/sustainability. Use flowcharts or process diagrams if helpful.

• Tailor to the Role: Select case studies that best reflect experience with water/wastewater projects, complex civil engineering, and managing design for large infrastructure programs.

• Focus on Problem/Solution/Result: Structure your case studies to clearly articulate the challenge, your approach as Design Manager, and the positive outcome.

• Digital Proficiency: If you have experience with BIM or sophisticated design software, be prepared to discuss how you leveraged these tools.

Challenge Preparation:

• Design Management Scenario: Be prepared for questions asking how you would approach a specific design challenge, manage a difficult stakeholder, or resolve a conflict within a design team.

• Project Risk Assessment: Practice identifying potential risks in a design process and outlining mitigation strategies.

• Sustainability Integration: Think about how you would ensure sustainability principles are embedded in design from the outset.

• Cost Control: Be ready to discuss strategies for managing design budgets and controlling costs effectively.

📝 Enhancement Note: The interview process for a Design Manager role at a company like Costain will likely be rigorous, assessing both technical competence and leadership potential. The portfolio review is a critical component, so candidates should prepare a curated selection of their best work that directly addresses the responsibilities and requirements outlined in the job description. Demonstrating a structured approach to design management, rather than just technical design skills, will be key.

🛠 Tools & Technology Stack

Primary Tools:

• Design Software: Proficiency with industry-standard CAD (e.g., AutoCAD) and BIM software (e.g., Autodesk Revit, Navisworks) is highly probable.

• Project Management Software: Experience with tools like Microsoft Project, Primavera P6, or similar for scheduling, resource allocation, and progress tracking.

• Collaboration Platforms: Familiarity with Microsoft Teams, SharePoint, Slack, or similar for communication and document sharing.

Analytics & Reporting:

• Data Analysis Tools: While not explicitly mentioned, the ability to interpret data from design and project management tools is essential. This might involve Excel for data manipulation and basic analysis.

• Reporting Dashboards: Experience creating or interpreting project status reports and design progress dashboards.

CRM & Automation:

• Document Management Systems: Experience with systems for managing large volumes of design documentation and revisions (e.g., Aconex, ProjectWise).

• ERP Systems: Familiarity with enterprise resource planning systems for project cost control and resource management (Costain likely uses SAP or a similar system).

📝 Enhancement Note: While specific software isn't listed, a Design Manager in the infrastructure sector will undoubtedly interact with BIM and advanced design visualization tools. The emphasis on "smart infrastructure" suggests a growing importance of digital tools for collaboration, data analysis, and lifecycle management. Candidates should be prepared to discuss their experience with any of these types of systems.

👥 Team Culture & Values

Operations Values:

• Safety First: A paramount value, reflected in the "safe, sustainable, and efficient to construct" mantra. Expect rigorous adherence to safety protocols and a proactive approach to risk management.

• Integrity: Operating with honesty and transparency in all dealings with clients, colleagues, and stakeholders.

• Collaboration: A strong emphasis on teamwork and cross-functional cooperation to achieve shared project goals.

• Innovation: Encouraging new ideas and the adoption of smart technologies to drive improvements in design and delivery.

• Customer Focus: Commitment to understanding and meeting client needs, delivering value and exceeding expectations.

Collaboration Style:

• Cross-Functional Integration: Design managers are expected to be key connectors, working closely with commercial, construction, and operational teams to ensure holistic project success.

• Open Communication: Fostering an environment where ideas can be shared freely, and feedback is constructive.

• Problem-Solving Focus: A collaborative approach to tackling challenges, drawing on diverse expertise within the project team.

• Process Improvement: Encouraging continuous refinement of workflows and methodologies to enhance efficiency and effectiveness.

📝 Enhancement Note: Costain's values, as publicly stated, emphasize integrity, safety, innovation, teamwork, and customer focus. For a Design Manager, this translates to a role where technical excellence must be balanced with strong interpersonal skills, a commitment to safe and sustainable practices, and a proactive approach to collaboration. The "smart infrastructure" vision further points to a culture that embraces technological advancement and forward-thinking solutions.

⚡ Challenges & Growth Opportunities

Challenges:

• Balancing Competing Priorities: Juggling technical requirements, budget constraints, tight deadlines, and client expectations simultaneously.

• Managing Complex Stakeholder Landscapes: Navigating the interests and requirements of various internal teams, external consultants, regulatory bodies, and the client (Thames Water).

• Ensuring Design for Constructability & Operability: Translating complex designs into practical, buildable solutions that are also efficient and safe to operate post-construction.

• Adopting New Technologies: Keeping pace with advancements in design software, BIM, and digital tools, and integrating them effectively into project workflows.

• Driving Sustainability Initiatives: Effectively embedding decarbonization and environmental goals into design processes and outputs.

Learning & Development Opportunities:

• Advanced Design & Engineering Training: Access to specialized courses in areas like advanced BIM, structural analysis, or specific water/wastewater technologies.

• Project Management & Leadership Development: Opportunities to enhance skills in project controls, risk management, contract administration, and team leadership.

• Industry Certifications: Support for obtaining or maintaining chartered engineer status or relevant project management certifications.

• Mentorship Programs: Access to experienced senior design managers and project leaders for guidance and career advice.

• Exposure to Diverse Projects: Working on a range of water and wastewater schemes allows for broad learning and skill diversification.

📝 Enhancement Note: The challenges inherent in this role are typical of large-scale infrastructure projects and offer significant learning opportunities. The growth potential is substantial, with clear pathways for career advancement and skill enhancement within Costain's established structure. The company's investment in its employees' development, evidenced by professional development support and a focus on smart infrastructure, makes this an attractive role for ambitious operations professionals.

💡 Interview Preparation

Strategy Questions:

• "Describe a complex design project you managed from inception to completion. What were the key challenges, and how did you overcome them?" (Focus on your process, risk management, and team leadership.)

• "How do you ensure designs are not only technically sound but also safe, sustainable, and cost-effective to construct and operate?" (Highlight your understanding of constructability and lifecycle thinking.)

• "Imagine a situation where a critical design element is behind schedule and impacting the overall project timeline. What steps would you take to address this?" (Demonstrate your problem-solving and proactive management skills.)

Company & Culture Questions:

• "What interests you about Costain and our work with Thames Water on AMP7/AMP8 projects?" (Show you've researched the company and understand the context of the role.)

• "How do you align with Costain's values, particularly regarding safety and innovation?" (Connect your personal values and work approach to the company's ethos.)

Portfolio Presentation Strategy:

• Select 2-3 Key Projects: Choose projects that best demonstrate your design management capabilities relevant to this role.

• Structure Your Case Studies: For each project, clearly outline:

  • Project Context: Client, type of project, scale, key objectives.
  • Your Role & Responsibilities: Your specific remit as Design Manager.
  • Challenges Faced: Technical, logistical, team-related, budget, schedule.
  • Your Solutions & Actions: How you managed the design process, mitigated risks, led the team.
  • Outcomes & Results: Quantifiable achievements (e.g., on-time delivery, budget adherence, safety record, sustainability improvements).

• Highlight Process & Methodology: Explain how you managed the design, not just what was designed. Discuss your approach to planning, risk assessment, quality control, and stakeholder engagement.

• Be Ready for Deep Dives: Prepare to answer detailed questions about any aspect of your presented projects.

📝 Enhancement Note: Interview preparation should focus on demonstrating a comprehensive understanding of the design management lifecycle, not just technical design skills. Candidates should be ready to articulate their methodologies, problem-solving approaches, and leadership style using concrete examples from their portfolio. Understanding Costain's focus on "smart infrastructure" and its partnership with Thames Water will be crucial for demonstrating alignment.

📌 Application Steps

To apply for this Design Manager position:

• Submit your application through the provided Oracle Cloud link, ensuring all required fields are completed accurately.

• Portfolio Customization: Prepare a concise portfolio showcasing 2-3 key design management projects. Tailor your case studies to highlight experience with water/wastewater infrastructure, civil engineering, and managing design teams. Emphasize your approach to safety, sustainability, and budget control.

• Resume Optimization: Update your CV to clearly articulate your 5-10 years of relevant experience. Use keywords from the job description (e.g., Design Manager, Project Delivery, Technical Compliance, Safety, Sustainability, Budget Management, AMP8, Thames Water). Quantify your achievements with metrics where possible.

• Interview Preparation: Practice answering behavioral and situational questions related to design management, team leadership, and problem-solving. Be ready to discuss your portfolio in detail and articulate your understanding of Costain's values and project context.

• Company Research: Familiarize yourself with Costain's work, particularly their infrastructure solutions and their relationship with Thames Water. Understand their commitment to smart infrastructure, safety, and sustainability.

⚠️ Important Notice: This enhanced job description includes AI-generated insights and operations industry-standard assumptions. All details should be verified directly with the hiring organization before making application decisions.