Design Manager

📍 Job Overview

Job Title: Design Manager

Company: Costain Group

Location: Brighton, East Sussex, United Kingdom

Job Type: Full time

Category: Engineering & Design Management

Date Posted: 2026-05-11T11:13:58

Experience Level: Mid-Senior Level (5-10 years)

Remote Status: Hybrid

🚀 Role Summary

• Lead and manage the end-to-end design and engineering processes for significant water and wastewater infrastructure projects.

• Ensure all design outputs are aligned with project objectives, technical specifications, safety standards, and sustainability goals.

• Drive efficiency and cost-effectiveness in design delivery, managing budgets and timelines meticulously.

• Foster a collaborative environment for design teams, promoting innovation and best practices in engineering design.

• Act as a key interface for project stakeholders, ensuring clear communication and alignment on design progress and outcomes.

📝 Enhancement Note: This role focuses on the strategic and operational aspects of design management within the water and wastewater sector, requiring a strong blend of technical engineering acumen, project execution, and team leadership. The "AMP8" context suggests involvement in a significant asset management period for Thames Water, implying complex, long-term infrastructure development.

📈 Primary Responsibilities

• Oversee the complete design lifecycle for assigned projects or framework sections, from conceptualization through to construction-ready documentation.

• Manage and mentor a team of designers, engineers, and technical specialists, ensuring their work meets quality, safety, and regulatory requirements.

• Develop and implement robust design management plans, including scope definition, resource allocation, and risk mitigation strategies.

• Collaborate closely with project management, construction teams, and external consultants to ensure seamless integration of design into the overall project delivery.

• Conduct rigorous technical reviews of design deliverables, ensuring compliance with industry standards, client specifications, and Costain's best practices.

• Proactively identify and manage design-related risks, proposing timely and effective solutions to prevent delays and cost overruns.

• Contribute to the development of new business proposals by providing expert input on design strategies, methodologies, and resource requirements.

• Champion the use of digital tools and technologies to enhance design collaboration, efficiency, and BIM (Building Information Modelling) integration.

• Ensure all designs consider constructability, maintainability, sustainability, and whole-life costs, aligning with Costain's smart infrastructure vision.

• Maintain accurate and comprehensive design documentation, records, and change control logs throughout the project lifecycle.

📝 Enhancement Note: The responsibilities highlight a critical role in bridging the gap between conceptual design and tangible infrastructure, with a strong emphasis on project delivery metrics (time, budget, quality). The mention of "framework" and "major project" indicates potential for varied project scopes and complexities.

🎓 Skills & Qualifications

Education:

• Bachelor's degree in a relevant engineering discipline (e.g., Civil, Mechanical, Electrical) or an equivalent engineering/management apprenticeship.

Experience:

• Minimum of 5-10 years of progressive experience in design management, engineering project delivery, or a related role within the infrastructure sector.

• Proven track record of successfully managing design processes for complex water and wastewater projects, including capital maintenance and new build schemes.

Required Skills:

• Design Management: Comprehensive understanding of the design lifecycle, from inception to completion, with a strong ability to oversee multiple design streams.

• Engineering Acumen: Solid technical foundation in civil, mechanical, or electrical engineering principles relevant to water and wastewater infrastructure.

• Project Management Fundamentals: Ability to manage project scope, timelines, and resources effectively, ensuring on-time and on-budget delivery.

• Risk Management: Proficiency in identifying, assessing, and mitigating design-related risks.

• Technical Compliance: Deep understanding of relevant industry standards, regulations, and codes of practice (e.g., UK building regulations, water industry standards).

• Stakeholder Management: Excellent communication and interpersonal skills to engage effectively with internal teams, clients, regulatory bodies, and external partners.

Preferred Skills:

• BIM & Digital Tools: Experience with Building Information Modelling (BIM) software and other digital design collaboration platforms.

• Sustainability Integration: Knowledge of sustainable design principles and their application in infrastructure projects.

• Contract Management: Familiarity with various forms of construction contracts and their implications for design responsibilities.

• Costain's Smart Infrastructure Framework: Understanding of Costain's service offerings and strategic approach to delivering integrated infrastructure solutions.

• Risk Management Training: Formal training or certification in project or risk management (e.g., PRINCE2, APM).

📝 Enhancement Note: The qualifications emphasize a blend of formal education, practical experience, and professional accreditation. The preferred skills point towards a forward-thinking approach to design, leveraging digital tools and sustainable practices, aligning with Costain's strategic vision.

📊 Process & Systems Portfolio Requirements

Portfolio Essentials:

• Showcase a minimum of 2-3 significant water or wastewater infrastructure projects managed from a design perspective.

• For each project, clearly detail your specific role, responsibilities, and contributions to the design process.

• Provide evidence of successful design delivery, including adherence to budget, schedule, and technical specifications.

• Demonstrate your ability to manage design teams, coordinate multidisciplinary inputs, and resolve design challenges.

Process Documentation:

• Highlight your experience in developing and implementing Design Management Plans (DMPs) or similar control documents.

• Present examples of design risk registers, mitigation strategies, and issue resolution processes you have managed.

• Showcase your approach to design quality assurance and control, including review processes and sign-off procedures.

• Illustrate your understanding of change management within the design process and how you have managed design revisions.

• Provide evidence of your experience with design coordination across different engineering disciplines and with construction execution.

📝 Enhancement Note: A strong portfolio demonstrating practical application of design management principles, risk mitigation, and successful project outcomes is crucial. The emphasis is on quantifiable achievements and a clear understanding of process governance.

💵 Compensation & Benefits

Salary Range: £50,000 - £70,000 per annum (estimated based on location, experience level, and industry benchmarks for Design Manager roles in the UK infrastructure sector.)

Benefits:

• Competitive pension scheme with employer contributions.

• Comprehensive private medical insurance, including access to specialists.

• Generous annual leave allowance, with options to purchase additional days.

• Life assurance cover.

• Professional development opportunities, including funding for further training, certifications, and chartership support.

• Opportunities for career advancement within Costain's diverse project portfolio.

• Employee assistance program offering confidential counseling and support.

• Cycle to Work scheme and other wellbeing initiatives.

Working Hours: Standard working hours are typically 40 hours per week, Monday to Friday. A hybrid working arrangement will apply, requiring a presence in the Brighton office for a portion of the week, with flexibility for remote work.

📝 Enhancement Note: The estimated salary range is based on research for similar Design Manager roles in the Brighton/South East England region, considering the experience level indicated. Benefits are typical for a large infrastructure company like Costain, with a focus on long-term employee wellbeing and professional growth.

🎯 Team & Company Context

🏢 Company Culture

Industry: Infrastructure, Construction, Engineering Services, Water & Utilities. Costain is a leading integrated solutions provider in the UK, specializing in energy, water, transportation, and defence markets. They focus on delivering smart infrastructure solutions that address national strategic needs and regulatory requirements.

Company Size: Large Enterprise (typically >5,000 employees globally). This size indicates robust organizational structures, established processes, and a wide range of career development opportunities.

Founded: Costain was founded in 1865, bringing over 150 years of experience and a deep-rooted history in delivering complex engineering and construction projects across the UK. This longevity suggests stability, a strong reputation, and a wealth of institutional knowledge.

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 support structure and opportunities for knowledge sharing.

Methodology:

• Costain emphasizes an integrated approach to project delivery, focusing on "smart infrastructure solutions." This implies a commitment to digital technologies, data analytics, and sustainable practices.

• Design processes are expected to be rigorous, adhering to strict safety, environmental, and quality standards.

• A strong emphasis is placed on collaboration, innovation, and continuous improvement to achieve client objectives and enhance project performance.

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

📝 Enhancement Note: Costain's long history and focus on "smart infrastructure" suggest a culture that values innovation, safety, and long-term sustainability. The company's scale offers significant career development potential and exposure to large-scale, impactful projects.

📈 Career & Growth Analysis

Operations Career Level: This role is positioned at a Mid-Senior to Senior level within the engineering and design management hierarchy. It requires significant autonomous decision-making, leadership of design teams, and accountability for critical project outcomes.

Reporting Structure: The Design Manager will report to a Principal or Senior Design Manager, indicating a clear reporting line and a structured career progression path within the design management function. This structure allows for mentorship and guidance from more experienced professionals.

Operations Impact: The Design Manager's impact is directly tied to the successful technical delivery of projects. By ensuring designs are safe, sustainable, efficient, and compliant, they directly contribute to Costain's reputation, client satisfaction, profitability, and long-term strategic goals in infrastructure development. Their work is fundamental to Costain's ability to deliver on its "smart infrastructure solutions" vision.

Growth Opportunities:

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

• Leadership Advancement: Progress to Principal Design Manager, Head of Design, or other senior leadership roles within Costain's project delivery or consultancy divisions.

• Technical Mastery: Deepen knowledge in areas like BIM, advanced analytics for design optimization, or specific complex engineering challenges.

• Framework Management: Take on responsibility for managing design across entire frameworks or multiple concurrent projects.

• Bid & Strategy: Move into roles with greater involvement in business development and strategic planning for major bids.

📝 Enhancement Note: The role offers a clear path for advancement within design management and broader project leadership. The emphasis on "smart infrastructure" and sustainability suggests future-proofing one's career by developing expertise in these growing areas.

🌐 Work Environment

Office Type: The role is based in Brighton, operating under a hybrid work arrangement. This implies a modern office environment equipped for collaborative work, design reviews, and team meetings, balanced with the flexibility of remote work.

Office Location(s): Brighton, East Sussex, United Kingdom. This location serves as a hub for projects within the Thames Valley and Thames South regions, offering good connectivity and access to major transport links.

Workspace Context:

• Collaborative Hub: The office space will likely facilitate team collaboration, design workshops, and stakeholder meetings, fostering a dynamic working atmosphere.

• Technology Enabled: Expect access to modern IT infrastructure, design software, and communication tools necessary for effective hybrid working and remote collaboration.

• Team Interaction: Regular opportunities to interact with fellow Design Managers, project teams, and senior leadership, promoting knowledge exchange and professional development.

Work Schedule: A standard 40-hour work week is expected, with typical business hours. The hybrid nature allows for flexibility in managing work location, balancing office-based collaboration with the benefits of remote work. This flexibility is crucial for managing demanding project schedules effectively.

📝 Enhancement Note: The hybrid model in Brighton indicates a contemporary work environment designed to support both focused individual work and collaborative team efforts, aligning with modern industry expectations for work-life balance and operational efficiency.

📄 Application & Portfolio Review Process

Interview Process:

• Initial Screening: Application review, focusing on CV and any provided portfolio highlights.

• First Interview: Typically with HR or a Senior Design Manager, assessing foundational experience, technical fit, and cultural alignment. Expect questions on your approach to design management, risk, and team leadership.

• Technical Assessment/Case Study: A practical exercise or case study may be presented, requiring you to outline your approach to a specific design challenge or project scenario relevant to water/wastewater infrastructure. This is where your portfolio can offer tangible examples.

• Final Interview: Likely with a Principal Design Manager or Project Director, focusing on strategic thinking, leadership capabilities, and how you would contribute to Costain's goals. This stage often involves a deeper dive into your portfolio and project experiences.

Portfolio Review Tips:

• Quantify Achievements: Use data and metrics wherever possible (e.g., "Reduced design delivery time by 15%", "Managed a design budget of £X million").

• Structure for Clarity: Organize your portfolio by project, clearly outlining the challenge, your role, the solution/process, and the outcome. Use visual aids like diagrams or flowcharts for complex processes.

• Highlight Key Responsibilities: Ensure your portfolio directly addresses the core responsibilities mentioned in the job description: design oversight, team management, risk mitigation, technical compliance, and sustainability.

• Tailor to Costain: Research Costain's current projects and strategic objectives (e.g., smart infrastructure, sustainability initiatives) and subtly align your portfolio examples to demonstrate relevant experience and forward-thinking capabilities.

• Be Prepared to Discuss: Know your portfolio inside out and be ready to articulate your decision-making processes and lessons learned for each project.

Challenge Preparation:

• Understand the Context: Research common design challenges in UK water and wastewater infrastructure, especially related to AMP8 projects. Think about regulatory hurdles, aging infrastructure, sustainability targets, and stakeholder pressures.

• Develop a Framework: Have a structured approach ready for problem-solving (e.g., Define, Analyze, Develop Solutions, Implement, Review).

• Focus on Process: Demonstrate how you would manage the design process itself – how you'd engage stakeholders, manage risks, ensure technical integrity, and integrate sustainability.

📝 Enhancement Note: The interview process is designed to assess both technical competence and leadership potential. A well-curated portfolio that clearly demonstrates problem-solving skills, process management, and quantifiable results will be a significant asset.

🛠 Tools & Technology Stack

Primary Tools:

• BIM Software: Experience with industry-standard BIM platforms such as Autodesk Revit, Navisworks, or Bentley Systems products (e.g., OpenBuildings Designer) is highly beneficial for integrated design and visualization.

• CAD Software: Proficiency in AutoCAD or similar Computer-Aided Design software for detailed design work.

• Project Management Software: Familiarity with tools like Microsoft Project, Primavera P6, or Procore for project scheduling, resource management, and progress tracking.

• Collaboration Platforms: Experience with platforms like Microsoft Teams, Slack, or dedicated project collaboration portals for team communication and document sharing.

Analytics & Reporting:

• Data Analysis Tools: While not a primary analyst role, understanding how to interpret data from design reviews, cost reports, and performance metrics is key. Familiarity with Excel for data manipulation and basic reporting is essential.

• Reporting Dashboards: Experience with or ability to interpret data presented in dashboards (e.g., Power BI, Tableau) for project status and performance monitoring.

CRM & Automation:

• ERP/Project Financials: Awareness of systems used for project financial tracking and reporting, though direct management may not be required.

• Workflow Automation: While not directly responsible for automating design workflows, an understanding of how automation can improve design efficiency and reduce errors is valuable.

📝 Enhancement Note: Proficiency in BIM and project management software is critical. The role requires leveraging technology to enhance collaboration and ensure efficient design delivery, aligning with Costain's "smart infrastructure" focus.

👥 Team Culture & Values

Operations Values:

• Safety First: A paramount commitment to health, safety, and environmental (HSE) standards in all design and execution activities.

• Integrity: Upholding the highest ethical standards in business dealings and project execution.

• Collaboration: Fostering a team-oriented environment where diverse perspectives are valued and shared.

• Innovation: Encouraging new ideas and embracing technology to find smarter, more efficient solutions.

• Customer Focus: Dedication to understanding and meeting client needs, delivering value, and building long-term relationships.

• Sustainability: Embedding environmental responsibility and sustainable practices into all aspects of design and delivery.

Collaboration Style:

• Integrated Teamwork: Costain promotes a collaborative approach across disciplines and project phases, breaking down traditional silos.

• Open Communication: Encouraging transparent and honest communication to address challenges and share successes.

• Knowledge Sharing: A culture that supports the sharing of best practices, lessons learned, and technical expertise among team members.

• Proactive Problem-Solving: A collective effort to identify potential issues early and work together to find effective solutions.

📝 Enhancement Note: The emphasis on safety, integrity, and collaboration aligns with the demanding nature of infrastructure projects. A proactive, team-oriented approach to problem-solving and a commitment to sustainability are key cultural indicators.

⚡ Challenges & Growth Opportunities

Challenges:

• Complexity of AMP8 Projects: Navigating the intricate requirements of Thames Water's Asset Management Period 8, which involves extensive upgrades and maintenance of critical water infrastructure.

• Balancing Stakeholder Needs: Managing diverse expectations from clients, regulatory bodies, internal teams, and the public regarding design outcomes, cost, and environmental impact.

• Integrating Digital Technologies: Effectively implementing and leveraging BIM and other digital tools across multidisciplinary teams, ensuring seamless adoption and maximum benefit.

• Design for Sustainability & Decarbonization: Meeting increasingly stringent environmental targets and contributing to Costain's and clients' decarbonization goals through innovative design solutions.

• Managing Design Risks in a Dynamic Environment: Proactively identifying and mitigating risks associated with complex engineering, site conditions, and evolving project requirements.

Learning & Development Opportunities:

• Advanced Design Management Training: Access to specialized courses and certifications in design management, risk management, and project leadership.

• Industry Conferences & Seminars: Opportunities to attend events focused on water infrastructure, smart technologies, and sustainable engineering.

• Chartership Support: Guidance and support for achieving professional chartership status (e.g., MICE, IMechE, MCIOB).

• Mentorship Programs: Pairing with senior leaders for career guidance and professional development.

• Exposure to Diverse Projects: Working on a variety of water and wastewater schemes, from capital maintenance to large civil new builds, broadening experience.

📝 Enhancement Note: The challenges presented are typical of large-scale infrastructure projects and offer significant opportunities for professional development. Proactively addressing these challenges will be key to success in the role.

💡 Interview Preparation

Strategy Questions:

• "How do you approach developing a Design Management Plan for a complex water infrastructure project?" (Focus on structure, key elements like risk, QA/QC, stakeholder engagement, and alignment with project objectives.)

• "Describe a time you successfully managed a significant design conflict or technical challenge. What was your process, and what was the outcome?" (Highlight problem-solving skills, communication, and resolution methodology.)

Company & Culture Questions:

• "What do you know about Costain's approach to 'smart infrastructure' and how would your design management skills contribute to this?" (Research Costain's website, case studies, and annual reports. Link your experience to digital solutions, sustainability, and integrated delivery.)

• "How do you foster collaboration within a multidisciplinary design team, especially in a hybrid work environment?" (Discuss communication strategies, conflict resolution, and leveraging collaboration tools.)

Portfolio Presentation Strategy:

• The STAR Method: Structure your project examples using Situation, Task, Action, and Result. This provides a clear narrative for your achievements.

• Visual Storytelling: Use diagrams, flowcharts, or high-level visualizations to explain complex design processes or project layouts. Keep text concise.

• Quantify Impact: Emphasize metrics – cost savings, schedule improvements, defect reduction, safety enhancements – that demonstrate the value of your design management.

• Focus on Your Role: Clearly delineate your specific contributions and decision-making authority within each project.

• Prepare for Q&A: Anticipate questions about your choices, challenges, and lessons learned. Be ready to defend your approach with logic and experience.

📝 Enhancement Note: Tailoring your responses and portfolio examples to Costain's specific context, particularly their focus on smart infrastructure and sustainability, will be crucial. Demonstrating a proactive, collaborative, and results-oriented approach will resonate well.

📌 Application Steps

To apply for this Design Manager position:

• Submit your application through the Oracle Cloud portal link provided.

• Customize Your CV: Highlight your experience in design management, engineering leadership, and successful project delivery within the water/wastewater sector. Use keywords from the job description such as "Design Management," "AMP8," "Thames Water," "Risk Management," and "Technical Compliance."

• Prepare Your Portfolio: Curate 2-3 key projects that best showcase your ability to manage design processes, lead teams, and deliver technically compliant, safe, and sustainable infrastructure solutions. Ensure it clearly demonstrates your role and quantifiable achievements.

• Research Costain: Familiarize yourself with Costain's mission, values, recent projects (especially in the water sector), and their commitment to smart infrastructure and sustainability. Understand their role in AMP8 projects.

• Practice Interview Responses: Prepare answers to common interview questions, focusing on your experience with the STAR method and being ready to discuss your portfolio in detail. Practice articulating your problem-solving approach and leadership style.

⚠️ 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.

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