CS&A Principal Designer

📍 Job Overview

Job Title: CS&A Principal Designer

Company: ASSYSTEM

Location: Whitehaven, England, United Kingdom

Job Type: Full-time

Category: Engineering / Technical (Nuclear, Civil & Structural)

Date Posted: 2026-06-03T14:25:44.859

Experience Level: 5-10 years

Remote Status: On-site

🚀 Role Summary

• This role focuses on the creation and delivery of Civil & Structural (CS&A) engineering design packages within the Analytical Services Portfolio, specifically supporting nuclear engineering projects.

• The Principal Designer will leverage advanced CAD software to produce detailed technical drawings and contribute to the full project lifecycle, from concept to detailed design and execution support.

• A key aspect of this position involves rigorous adherence to quality assurance standards and regulatory compliance within the nuclear industry.

• Collaboration with multi-disciplinary teams is paramount, ensuring integrated design solutions that meet complex project requirements in a highly regulated environment.

📝 Enhancement Note: The job title "CS&A Principal Designer" and the mention of "Analytical Services Portfolio" and "Nuclear SC Clearance" strongly indicate this role operates within the highly specialized and regulated nuclear engineering sector. The emphasis on design packages, CAD software, and collaboration points towards a strong need for technical proficiency and project execution skills within this domain.

📈 Primary Responsibilities

• Develop and produce comprehensive Civil & Structural engineering drawings and technical documentation utilizing AutoCAD, Revit, and Civil 3D for the Analytical Services Portfolio.

• Actively collaborate with other engineering disciplines (e.g., mechanical, electrical, process) to ensure integrated and compliant design solutions.

• Conduct thorough reviews of project files and design outputs to ensure strict compliance with relevant industry standards, protocols, and company-specific requirements.

• Implement and champion engineering best practices and established procedures to maintain high standards of design quality and safety.

• Provide crucial support to the CS&A Responsible Engineer in the definition, implementation, and delivery of engineering design work packages across all project stages, from concept and preliminary design through to detailed design and construction support.

• Proactively contribute to the overall success of the CS&A Design team by sharing knowledge, assisting fellow designers, and fostering a collaborative working environment.

• Ensure all design work adheres to relevant legislation, British Standards, and Eurocodes, with a specific focus on reinforced concrete, steel, and masonry structures.

• Translate complex nuclear industry standards and requirements, such as SL standards, into actionable AutoCAD drawings and design specifications.

• Manage and utilize Document Management Systems (DMS) and potentially specific company systems like Axiom for efficient document control and project execution.

📝 Enhancement Note: The responsibilities listed are typical for a Principal Designer in a technically demanding sector like nuclear engineering. The emphasis on specific software (AutoCAD, Revit, Civil 3D), standards (British Standards, Eurocodes, Nuclear Industry Standards), and project lifecycle involvement indicates a need for experienced professionals capable of independent work and team collaboration within a structured engineering framework.

🎓 Skills & Qualifications

Education:

• HNC or HND qualification in Civil or Structural Engineering is essential.

Experience:

• A minimum of 5 years of experience in a Designer role is required.

• Extensive experience working within highly regulated environments such as Nuclear, Rail, Bridge Construction, Offshore, Petrochemical, etc., is mandatory.

• Proven experience delivering projects within multi-disciplinary design teams, with a focus on brownfield sites and asset care, is highly desirable.

Required Skills:

• Proficiency in AutoCAD, Revit, and/or Civil 3D for detailed engineering design and drafting.

• Strong understanding of Civil & Structural engineering principles, including reinforced concrete, steel, and masonry design.

• In-depth knowledge of British Standards and Eurocodes relevant to structural engineering.

• Familiarity with relevant legislation and engineering best practices.

• Ability to work proactively and independently, demonstrating a solution-focused mindset.

• Excellent detailing skills with a keen eye for accuracy and precision in technical drawings.

• Strong interpersonal, written, and verbal communication skills for effective collaboration and stakeholder engagement.

Preferred Skills:

• Experience using Revit specifically for steel-framed structures, building alterations, and refurbishment projects.

• Knowledge of the Sellafield Enterprise Management System (SEMS) and SL/Axiom processes.

• Experience in civil/structural safety design.

• SQEP (Suitable Qualified and Experienced Person) for SR0754 Designer.

• Monitored Worker status.

• Familiarity with Document Management Systems (DMS).

• Experience translating nuclear industry-specific standards (e.g., SL standards) into design outputs.

📝 Enhancement Note: The qualifications highlight a blend of formal education, extensive practical experience in regulated sectors, and specific technical proficiencies in CAD software and structural design standards. The explicit mention of nuclear-specific knowledge and clearance requirements is critical for candidates to note.

📊 Process & Systems Portfolio Requirements

Portfolio Essentials:

• Showcase a minimum of 5 years of experience in Civil & Structural design, with a strong emphasis on projects within regulated industries.

• Include examples of detailed technical drawings and design packages produced using AutoCAD, Revit, and/or Civil 3D, demonstrating proficiency across different project stages (concept, preliminary, detailed design).

• Present case studies that highlight your ability to collaborate effectively within multi-disciplinary teams and integrate CS&A designs with other engineering disciplines.

• Demonstrate a clear understanding of how to implement engineering best practices and adhere to quality assurance protocols within your design work.

Process Documentation:

• Exhibit examples of how you have translated project requirements and industry standards (e.g., British Standards, Eurocodes, nuclear-specific guidelines) into executable design processes and documentation.

• Showcase your approach to reviewing project files for compliance and ensuring adherence to company protocols and legislative requirements.

• Include documentation or descriptions of your workflow for managing design changes, incorporating feedback, and ensuring the successful delivery of design solutions throughout the project lifecycle.

• Provide insights into your experience with Document Management Systems (DMS) and how you ensure efficient document control and accessibility.

📝 Enhancement Note: For a Principal Designer role, a portfolio is crucial. It should not only display technical drawing skills but also demonstrate an understanding of process, quality, collaboration, and regulatory compliance, especially within the nuclear context. Candidates should be prepared to discuss the methodologies behind their documented processes.

💵 Compensation & Benefits

Salary Range:

Benefits:

• Pension Scheme: Assystem likely offers a robust pension scheme, potentially with employer contributions, to support long-term financial planning.

• Health & Wellbeing: Comprehensive health insurance, potentially including dental and vision coverage, along with access to wellbeing programs and mental health support resources.

• Professional Development: Opportunities for continuous learning, training, and professional development, including support for further qualifications, certifications, and participation in industry conferences.

• Annual Leave: Generous annual leave entitlement, likely exceeding statutory minimums, to promote work-life balance.

• Security Clearance Support: Assistance and support in obtaining and maintaining the required Nuclear SC Clearance.

• Life Assurance: A life assurance policy providing financial security for dependents.

Working Hours:

• The standard working hours for this full-time, on-site role are expected to be around 40 hours per week. While a core schedule will be in place, some flexibility may be offered to accommodate project deadlines, with potential for overtime to be managed in line with company policy and project demands.

📝 Enhancement Note: Salary is estimated based on typical UK nuclear engineering roles at this level and location. Benefits are inferred from standard offerings by large engineering firms in regulated sectors. Candidates should confirm exact details during the interview process.

🎯 Team & Company Context

🏢 Company Culture

Industry: Nuclear Engineering, Infrastructure Projects, Defence, Energy. Assystem operates at the forefront of highly regulated sectors, supporting critical national infrastructure. Their work in nuclear engineering is particularly significant, requiring an unwavering commitment to safety, security, and quality.

Company Size: Assystem is a global entity employing approximately 8,000 experts across 13 countries. This scale provides stability, extensive resources, and opportunities for international exposure, while still allowing for specialized teams to operate with agility.

Founded: Assystem has over 60 years of experience, indicating a long-standing reputation and deep expertise in its core markets. This history suggests a culture built on sustained technical excellence and long-term client relationships.

Team Structure:

• The CS&A Principal Designer will be part of the Civil & Structural Engineering team, which is a key component of Assystem's broader engineering services.

• This team likely comprises various roles, including other designers, engineers, and potentially project managers, working collaboratively on specific design packages.

• The role reports to the CS&A Responsible Engineer, indicating a clear reporting line and a structure that emphasizes technical oversight and accountability.

Methodology:

• Assystem's approach is characterized by a commitment to engineering excellence, rigorous quality assurance, and adherence to stringent safety and security protocols, particularly in the nuclear sector.

• Data-driven decision-making is implicit, with a focus on detailed analysis and precise execution throughout the project lifecycle.

• Workflow planning and optimization are critical, especially when dealing with complex infrastructure projects and tight deadlines, requiring efficient use of resources and technology.

• Automation and efficiency practices are likely employed where applicable, though the core of this role involves manual design and detailing.

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

📝 Enhancement Note: Assystem's established presence in high-stakes industries like nuclear engineering suggests a culture that values precision, safety, and technical expertise. The company's global reach offers significant career development potential.

📈 Career & Growth Analysis

Operations Career Level: This role is positioned as a "Principal Designer," indicating a senior individual contributor level. It signifies a high degree of technical expertise, autonomy, and responsibility within the Civil & Structural design domain. A Principal Designer is expected to mentor junior staff, lead design efforts on complex packages, and be a subject matter expert.

Reporting Structure: The Principal Designer reports directly to the CS&A Responsible Engineer. This structure ensures clear technical guidance and oversight, with the Responsible Engineer likely acting as the primary technical authority for the design work packages.

Operations Impact: The Principal Designer's work directly impacts the successful execution of critical infrastructure projects, particularly within the nuclear sector. High-quality, compliant designs are essential for project safety, regulatory approval, and overall project success, contributing significantly to Assystem's reputation and client satisfaction.

Growth Opportunities:

• Technical Specialization: Deepen expertise in specific areas of Civil & Structural engineering within the nuclear context, potentially becoming a recognized subject matter expert or lead for particular design aspects.

• Leadership Development: Progress into roles such as CS&A Responsible Engineer, Project Engineer, or Design Manager, where leadership and project oversight responsibilities increase.

• Cross-functional Mobility: With proven performance and understanding of nuclear projects, opportunities may arise to move into related operational roles or project management positions within Assystem's broader GTM functions.

• Professional Certifications: Pursue advanced certifications or chartered engineer status, supported by Assystem, to enhance professional standing and career progression.

• Mentorship Roles: Take on formal or informal mentorship roles for junior designers and engineers, developing leadership and training skills.

📝 Enhancement Note: The "Principal" title signifies a significant career step for designers, moving beyond pure execution to encompass leadership and strategic input within their domain. Growth opportunities are geared towards increasing technical authority, project responsibility, and leadership capabilities.

🌐 Work Environment

Office Type: This is an on-site role based in Whitehaven, UK. Assystem likely operates modern office facilities designed to support engineering teams, featuring collaborative workspaces and dedicated areas for technical work.

Office Location(s): The primary location is Whitehaven, a key hub for the UK's nuclear industry. This proximity to major nuclear sites offers direct engagement with industry challenges and opportunities.

Workspace Context:

• The workspace will be designed to facilitate collaboration among engineers and designers. Expect shared CAD workstations, meeting rooms for design reviews, and access to project documentation and IT systems.

• Access to relevant operations tools and technology, including advanced CAD software, project management platforms, and potentially specialized nuclear design software, will be provided.

• Opportunities for direct interaction with the CS&A team, other engineering disciplines, and potentially client representatives will be frequent, fostering a dynamic and integrated work environment.

Work Schedule: A standard 40-hour work week is typical for this role. The schedule will likely involve core working hours to ensure team availability for collaboration and project coordination. Flexibility may be available, particularly around project deadlines, but the nature of the work requires consistent presence and responsiveness on-site.

📝 Enhancement Note: The on-site requirement in Whitehaven is critical for a role involving nuclear SC clearance and direct collaboration on sensitive projects. The environment is expected to be technically focused and highly collaborative.

📄 Application & Portfolio Review Process

Interview Process:

• Initial Screening: A review of your CV and application to assess against the core requirements, particularly experience in regulated environments and proficiency in required CAD software.

• Technical Interview: This stage will likely involve a discussion with the CS&A Responsible Engineer or a senior member of the design team. Expect questions on your experience with specific CAD tools, your understanding of structural design principles, British Standards, Eurocodes, and your experience in regulated sectors. You may be asked to walk through specific examples from your portfolio.

• Portfolio Review: A dedicated session to present and discuss selected projects from your portfolio. Be prepared to articulate your role, the challenges faced, the solutions implemented, and the outcomes achieved. Focus on how you applied best practices and managed design complexities.

• Competency-Based Interview: Questions assessing your problem-solving skills, ability to work proactively, collaborative approach, and how you handle pressure and deadlines. Behavioral questions (e.g., "Tell me about a time when...") will be common.

• Security Clearance Discussion: A conversation regarding your eligibility and willingness to undergo the necessary UK security clearance (SC Clearance).

• Final Interview/Offer: Potentially a final discussion with a hiring manager or senior stakeholder, followed by an offer if successful.

Portfolio Review Tips:

• Curate Strategically: Select 3-4 of your most relevant projects that best showcase your skills in Civil & Structural design, CAD proficiency (AutoCAD, Revit, Civil 3D), and experience in regulated industries like nuclear.

• Highlight Your Role: Clearly define your specific contributions to each project. Use "I" statements where appropriate to emphasize your individual impact.

• Process & Problem-Solving: For each project, explain the design challenges, the engineering principles you applied, the standards you adhered to (e.g., British Standards, Eurocodes), and the specific solutions you developed.

• Showcase Technical Detail: Include examples of detailed drawings, schematics, or 3D models. Annotate them to explain key design features or complexities.

• Quantify Impact: Where possible, quantify the impact of your design work (e.g., efficiency gains, cost savings, adherence to stringent safety requirements).

• Tailor to Assystem: Research Assystem's work in the nuclear sector and try to align your portfolio examples with their known project types or challenges.

Challenge Preparation:

• CAD Proficiency Test: You might be given a short practical test to assess your speed and accuracy in AutoCAD, Revit, or Civil 3D. Practice common commands and workflows.

• Design Scenario: Be prepared for a hypothetical design problem related to structural integrity, load-bearing calculations for concrete/steel, or adapting designs for brownfield sites. Think about how you would approach the problem, what standards you would consult, and what information you would need.

• Standards Application: Practice explaining how you would apply specific British Standards or Eurocodes to a given structural design scenario.

📝 Enhancement Note: The interview process for a role requiring SC Clearance and specialized technical skills will be rigorous. A well-prepared portfolio and clear articulation of technical expertise and process adherence are essential for success.

🛠 Tools & Technology Stack

Primary Tools:

• AutoCAD: Essential for 2D drafting and design. Proficiency in creating detailed plans, sections, and elevations.

• Revit: Required for Building Information Modeling (BIM) and 3D design, particularly for steel-framed structures and building alterations/refurbishments.

• Civil 3D: Necessary for site design, grading, and infrastructure elements, likely used for external works or site-specific infrastructure within nuclear facilities.

Analytics & Reporting:

CRM & Automation:

• Document Management Systems (DMS): Critical for managing project documentation, revisions, and approvals. Experience with specific systems like Axiom or similar enterprise DMS is highly valued.

• Project Management Software: Familiarity with tools used for project scheduling, task management, and collaboration (e.g., Microsoft Project, Primavera P6, or similar) is beneficial for understanding project timelines and dependencies.

• Integration Tools: Understanding how CAD outputs integrate with other engineering software or project management platforms is an advantage.

📝 Enhancement Note: The core technical tools are CAD-based. Proficiency in these is non-negotiable. Experience with specific nuclear industry software and document management systems will be a significant advantage.

👥 Team Culture & Values

Operations Values:

• Safety & Security First: Paramount in the nuclear industry. Every design decision must prioritize the safety of personnel, the public, and the security of the facility.

• Technical Excellence & Precision: A commitment to high-quality, accurate, and detailed engineering design is expected, meeting and exceeding industry standards.

• Collaboration & Teamwork: Working effectively within a multi-disciplinary team is crucial for integrated design solutions. Open communication and mutual support are key.

• Integrity & Compliance: Adherence to all relevant legislation, company protocols, and client requirements is non-negotiable.

• Efficiency & Pragmatism: While maintaining high standards, finding practical and efficient design solutions that meet project timelines and budgets is important.

Collaboration Style:

• Cross-functional Integration: Expect close collaboration with other engineering disciplines (process, mechanical, electrical), safety officers, project managers, and potentially client representatives. Regular design review meetings and workshops are common.

• Process Review Culture: A continuous improvement mindset, where design processes are reviewed and refined to enhance efficiency and quality. Feedback is actively sought and given.

• Knowledge Sharing: A culture that encourages sharing of technical knowledge, best practices, and lessons learned across the team and wider organization. Mentorship is often a part of this.

📝 Enhancement Note: Assystem's culture, especially in the nuclear sector, will heavily emphasize safety, quality, and rigorous adherence to procedures. A collaborative, solution-oriented approach is vital for success.

⚡ Challenges & Growth Opportunities

Challenges:

• Navigating Complex Regulations: Understanding and applying stringent nuclear industry regulations, standards (e.g., SL standards), and company-specific protocols (e.g., SEMS, Axiom) can be demanding.

• Brownfield Site Integration: Designing for existing nuclear facilities presents unique challenges related to space constraints, legacy systems, and integration with operational assets.

• Multi-Disciplinary Coordination: Ensuring seamless integration of CS&A designs with other engineering disciplines, managing interdependencies and resolving conflicts effectively.

• Security Clearance Requirements: The process of obtaining and maintaining SC Clearance is rigorous and requires meeting specific residency and background checks.

• Tight Project Deadlines: Delivering high-quality designs within challenging project timelines, requiring strong time management and prioritization skills.

Learning & Development Opportunities:

• Nuclear Design Specialization: Gain in-depth expertise in the specific design challenges and requirements of the nuclear industry, becoming a go-to expert for CS&A in this sector.

• Advanced CAD & BIM Training: Opportunities to enhance skills in Revit, Civil 3D, and potentially explore advanced BIM workflows and tools relevant to nuclear projects.

• Project Management Fundamentals: Develop an understanding of project lifecycle management, risk assessment, and stakeholder engagement, which can be a stepping stone to project-focused roles.

• Leadership and Mentorship: Grow into leadership positions, mentoring junior designers and contributing to the strategic direction of the design team.

• Industry Conferences & Seminars: Participation in events focused on nuclear engineering, structural design, or advanced construction technologies to stay abreast of industry trends and network.

📝 Enhancement Note: The challenges are inherent to working in a high-stakes, complex industry. Assystem's structured environment offers clear pathways for professional development and growth within specialized technical domains.

💡 Interview Preparation

Strategy Questions:

• Design Philosophy: "Describe your design philosophy for Civil & Structural elements in a nuclear environment. How do you balance safety, constructability, and cost?"

• CAD Workflow: "Walk me through your typical workflow for creating a detailed structural drawing in Revit, from initial concept to final issuance. How do you ensure accuracy and compliance?"

• Collaboration Scenario: "Tell me about a time you had to resolve a design conflict with another engineering discipline. What was the issue, how did you approach it, and what was the outcome?"

• Standards Application: "How would you apply British Standard BS EN 1992 (Eurocode 2 for concrete structures) to a specific design challenge, such as designing a foundation for heavy equipment in a nuclear facility?"

Company & Culture Questions:

• Assystem's Role: "What do you know about Assystem's work in the nuclear sector? What interests you about contributing to projects like these?"

• Team Dynamics: "How do you contribute to a positive and productive team environment, especially when working under pressure?"

• Quality Assurance: "Describe your understanding of quality assurance in a highly regulated engineering context. How have you ensured compliance in your previous roles?"

Portfolio Presentation Strategy:

• Storytelling: Frame your portfolio projects as narratives. Start with the challenge, detail your problem-solving approach, explain the technical solutions, and conclude with the successful outcome.

• Visual Aids: Use high-quality images, drawings, and 3D models. Annotate them clearly to highlight key design features and your specific contributions.

• Focus on Relevance: Emphasize projects that demonstrate your experience with nuclear, regulated environments, and your proficiency in AutoCAD, Revit, and Civil 3D.

• Q&A Readiness: Anticipate questions about your design choices, your understanding of standards, and how you handle challenges. Be prepared to defend your technical decisions.

📝 Enhancement Note: Interview preparation should focus on demonstrating technical depth, regulatory awareness, collaborative skills, and a proactive, safety-conscious mindset, all supported by concrete examples from your portfolio.

📌 Application Steps

To apply for this CS&A Principal Designer position:

• **Submit