Principal Electrical, Control and Instrumentation Engineer

AssystemWarrington

Hybrid Full-time

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Experience Level

Manager

Qualifications

Why Choose to Join Us? Over 55 years of experience in nuclear engineering. Recognized as one of the top three largest nuclear engineering firms. Comprehensive social benefits including an active Employee Committee and holiday bonuses. Continuous training opportunities with numerous career advancement pathways. 70% of our management positions are filled through internal promotions! Flexible work arrangements: 1-2 days remote per week.

About the job

Become a Key Player in the Fusion and Modular Nuclear Business Unit!

We invite you to join our dynamic team as a Principal Engineer specializing in Electrical, Control, and Instrumentation (EC&I) within the innovative field of small modular reactor (SMR) nuclear power plants. In this pivotal role, you will lead and coordinate engineering projects, ensuring the integration of essential safety systems. Collaborating with diverse multidisciplinary teams, you will leverage your expertise in project management and technical planning to achieve successful project delivery that meets stringent timelines and budgetary constraints. With a robust background in EC&I and a track record of managing complex, safety-critical programs, preferably in the nuclear sector, you will be instrumental in advancing excellence in the energy sector.

Your Responsibilities Include:

Technical Programme Development: Design and oversee EC&I technical programmes throughout the product lifecycle.
Methodical Task Planning: Execute detailed task planning while considering interdependencies with other areas.
Collaboration and Integration: Promote effective collaboration across varied work streams to deliver cohesive solutions.
Scope Management: Vigilantly track and adjust programme scopes as necessary.
Resource Coordination: Identify resource needs and support the Chief Design Engineer (CDE) in devising resourcing strategies.
Budget Management: Aid in formulating and managing budgets for EC&I initiatives.
Financial Monitoring: Keep an eye on work pack budgets, forecasts, and actual costs against expectations.
Risk Assessment: Proactively manage programme risks, addressing both challenges and opportunities.
Contract Staff Oversight: Manage and optimize resources for contract personnel.

About Assystem

Assystem is a global leader focused on propelling the energy transition forward. With a workforce of 7,500 across 12 countries, we take on the critical challenge of transitioning to low-carbon energy solutions. Our 55+ years of expertise in highly regulated environments enable us to provide superior engineering, project management, and digital solutions.

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EC&I Engineer Positions - All Levels Available

Assystem

Full-time|On-site|Warrington

Join our dynamic team at Assystem as an EC&I Engineer, where your expertise will contribute to innovative projects across various sectors. We are looking for passionate individuals at all levels of experience who are eager to drive engineering excellence and enhance our operational capabilities.

Jan 9, 2026

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Principal EC&I Engineer

Assystem

Full-time|On-site|Warrington

Role overview The Principal EC&I Engineer at Assystem leads project teams in Warrington, focusing on electrical, control, and instrumentation engineering. This role plays a key part in delivering solutions that meet both industry standards and client requirements. Main responsibilities Guide teams through the design and development of EC&I systems Collaborate with colleagues from other disciplines to deliver integrated engineering solutions Mentor junior engineers and help them develop technical expertise Monitor project schedules and support timely delivery Contribute to strategic planning within engineering projects Location This position is based in Warrington.

Apr 28, 2026

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Senior EC&I Engineer

Assystem

Full-time|On-site|Warrington

Role overview Assystem is looking for a Senior EC&I Engineer to join the team in Warrington. The role centers on developing and delivering engineering solutions for electrical, control, and instrumentation systems in the energy sector. What you will do Collaborate with multidisciplinary teams to support projects from initial concept through implementation. Offer technical expertise in electrical, control, and instrumentation systems. Contribute to initiatives aimed at improving operational efficiency and safety. About Assystem Assystem works within the energy sector, focusing on engineering excellence and providing safe, efficient solutions.

Apr 21, 2026

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EC&I Responsible Engineer

Assystem

Full-time|On-site|Warrington

Assystem is seeking a dedicated and skilled EC&I Responsible Engineer to join our team in Warrington. In this role, you will be responsible for overseeing electrical, control, and instrumentation engineering projects, ensuring compliance with all applicable regulations and standards. You will play a vital role in driving engineering excellence and innovation within our operations.

Apr 7, 2026

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Lead EC&I Engineer Opportunity

Assystem

Full-time|On-site|Warrington

Role overview Assystem needs a Lead EC&I Engineer to manage major engineering projects focused on electrical, control, and instrumentation. The role is based in Warrington and centers on providing direction for a team of engineers, making sure that all project work follows strict technical, safety, and quality standards. Main responsibilities Guide and mentor a team of engineers through all stages of project delivery Maintain compliance with technical requirements, safety protocols, and quality expectations Deliver project solutions on time and within budget What Assystem values This position is suited to an experienced leader in EC&I engineering who has a proven record of managing teams and projects to high standards. Assystem values individuals who move projects forward and support their teams in reaching successful outcomes.

Apr 28, 2026

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Principal EC&I Engineer / Protection Engineer

Assystem

Full-time|On-site|Warrington

Role overview The Principal EC&I Engineer / Protection Engineer will take a lead role in engineering projects based in Warrington. This position guides project delivery and upholds industry standards throughout each assignment. Day-to-day, the focus is on providing practical solutions for clients. Assignments may vary, but the expectation is to ensure technical quality and compliance from start to finish. Key responsibilities Lead engineering projects, setting direction and standards for the team Ensure all work meets relevant industry regulations and quality expectations Deliver solutions tailored to client needs across different projects Location This role is based in Warrington.

Apr 21, 2026

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Associate EC&I Engineer - Nuclear

AECOM

Full-time|On-site|Warrington

Launch Your Career with AECOM and Help Shape the Future of Nuclear Energy!Join our talented engineering team and contribute to groundbreaking projects in the Nuclear Industry.As an Associate EC&I Engineer within our esteemed Nuclear team, you will immerse yourself in a variety of exciting international and UK-based projects. This role encompasses participation in multi-disciplinary initiatives throughout all phases of the project lifecycle, from client consultancy to comprehensive turn-key solutions. Your role will include client interactions, developing bids and proposals, and ensuring project delivery aligns with AECOM's rigorous standards for quality, safety, and environmental stewardship.We seek individuals who can leverage their expertise both independently and collaboratively to deliver exceptional outcomes for our clients. Our projects are inherently multi-disciplinary, spanning from client consultancy support to complete turn-key solutions, frequently involving electrical system design, building services, and direct consultancy services.Your Key ResponsibilitiesLead and execute EC&I design and engineering tasks within the department, upholding high standards and compliance with nuclear regulations.Generate, review, and authorize design documentation, including schematics, wiring diagrams, instrument datasheets, and system specifications.Provide design substantiation and support for safety cases, design reviews, and regulatory submissions.Review and validate work produced by other engineers and designers, ensuring adherence to standards of consistency, accuracy, and compliance.Mentor and nurture the development of junior team members, enhancing technical capability within the EC&I team.Cultivate strong working relationships with clients, stakeholders, and internal teams to facilitate project delivery and drive business growth.Contribute to the strategic planning and development of the EC&I business, identifying avenues for innovation and improvement.Assist with site inspections, commissioning, and testing of EC&I systems as needed.Maintain technical records and document control in accordance with company and client quality procedures.Join Us and Grow!Become a vital member of our dynamic nuclear team, composed of leading industry experts. Collaborate with top-tier civil, mechanical, electrical, and process engineers to deliver captivating projects, from small initiatives to large-scale ventures, from concept to completion. At AECOM, you will thrive in an inclusive and innovative environment.

Mar 3, 2026

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Senior Principal EC&I Engineer

Assystem

Full-time|On-site|Warrington

We are seeking a highly motivated and experienced Senior Principal EC&I Engineer to join our dynamic team at Assystem in Warrington. In this pivotal role, you will be responsible for leading engineering projects, providing technical expertise, and ensuring compliance with industry standards. You will work closely with cross-functional teams to deliver innovative solutions that meet client needs and drive business success.

Apr 7, 2026

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Principal EC&I Engineer - Join Assystem in Warrington

Assystem

Full-time|On-site|Warrington

Assystem is seeking a talented and experienced Principal EC&I Engineer to join our dynamic team in Warrington. In this pivotal role, you will lead engineering projects, ensuring compliance with industry standards while driving innovation and excellence. Your expertise will be crucial in designing and implementing efficient electrical, control, and instrumentation systems.

Mar 21, 2025

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Lead Principal EC&I Engineer - Nuclear Projects

AECOM

Full-time|On-site|Warrington

Begin your journey here. Expand your horizons with us.“Are you prepared to become part of a skilled engineering team that is redefining the Nuclear Industry?”As a Principal EC&I Engineer within our established and growing Nuclear team, you will engage in an exciting variety of projects, both internationally and across the UK. This role allows you to be involved in multi-disciplinary ventures at different phases of their lifecycle, from client consultancy to full turnkey delivery. You will interact with clients, develop bids and proposals, and ensure project delivery adheres to AECOM's high standards for quality, safety, and environmental responsibility.We seek candidates who can leverage their expertise both independently and collaboratively to enhance project outcomes for our clients. Our projects span a range of activities, from client consultancy to comprehensive turnkey solutions, often featuring electrical system design, building services, and direct consultancy services.This position is ideal for a seasoned Principal EC&I Engineer eager to apply their skills individually or as part of a team to maximize client benefits. Our projects are inherently multi-disciplinary and cover all stages of the project lifecycle, catering to large-scale turnkey solutions.Join us at a pivotal moment for the Nuclear Team, with an interesting and expanding pipeline of projects in both international and UK settings.Key Responsibilities:Oversee the delivery of EC&I design and engineering within the department, including the production of design documentation, substantiation, and review/approval of fellow engineers' work.Lead, mentor, and cultivate a team that can drive the growth of the EC&I business. Strong determination and networking skills are essential.Execute moderate portions of broader assignments under the guidance of experienced engineers.Collect and correlate fundamental engineering data using established procedures.Engage in detailed or routine engineering tasks involving calculations and basic tests.Propose solutions to new challenges by modifying standard procedures from past assignments.Identify discrepancies in engineering outputs.Provide mentorship to entry-level engineers.Conduct tasks within the agreed budget and schedule, with minimal supervision.Independently complete all primary design elements required for engineering projects.

Mar 3, 2026

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Principal Electrical, Control and Instrumentation Engineer

Assystem

Full-time|Hybrid|Warrington

Become a Key Player in the Fusion and Modular Nuclear Business Unit! We invite you to join our dynamic team as a Principal Engineer specializing in Electrical, Control, and Instrumentation (EC&I) within the innovative field of small modular reactor (SMR) nuclear power plants. In this pivotal role, you will lead and coordinate engineering projects, ensuring the integration of essential safety systems. Collaborating with diverse multidisciplinary teams, you will leverage your expertise in project management and technical planning to achieve successful project delivery that meets stringent timelines and budgetary constraints. With a robust background in EC&I and a track record of managing complex, safety-critical programs—preferably in the nuclear sector—you will be instrumental in advancing excellence in the energy sector.Your Responsibilities Include: Technical Programme Development: Design and oversee EC&I technical programmes throughout the product lifecycle. Methodical Task Planning: Execute detailed task planning while considering interdependencies with other areas. Collaboration and Integration: Promote effective collaboration across varied work streams to deliver cohesive solutions. Scope Management: Vigilantly track and adjust programme scopes as necessary. Resource Coordination: Identify resource needs and support the Chief Design Engineer (CDE) in devising resourcing strategies. Budget Management: Aid in formulating and managing budgets for EC&I initiatives. Financial Monitoring: Keep an eye on work pack budgets, forecasts, and actual costs against expectations. Risk Assessment: Proactively manage programme risks, addressing both challenges and opportunities. Contract Staff Oversight: Manage and optimize resources for contract personnel.

Feb 23, 2026

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Electrical, Control & Instrumentation Engineer (Nuclear)

AECOM UK

Full-time|On-site|Warrington

Begin your journey with us. Advance your career here.“Are you excited to become a part of a team of skilled engineers and influence the future of the Nuclear Industry?”AECOM UK is on the lookout for a dedicated Electrical, Control & Instrumentation (EC&I) Engineer to join our dynamic Warrington office. In this role, you will be instrumental in delivering top-notch EC&I design and engineering services. Your responsibilities will encompass the creation of design documentation, ensuring design integrity, and conducting thorough checks on the work of fellow engineers and designers. This position presents a unique opportunity to engage in technically demanding projects within a collaborative, multi-disciplinary environment while also interacting directly with clients.Key Responsibilities:Lead the EC&I design and engineering efforts within the department, ensuring high standards of quality in all outputs.Develop Functional Design Specifications, Basis of Design, User Requirement Specifications, and related documentation.Review and approve engineering drawings and documents from colleagues to verify adherence to standards and project criteria.Work closely with mechanical, civil, and process engineers to guarantee integrated project delivery.Oversee small teams and manage workload distribution to ensure projects are completed on time and within budgetary constraints.Prioritize Health and Safety in all design considerations.Engage directly with clients, showcasing your professional and technical expertise.Electrical Responsibilities:Design for low voltage electrical distribution systems, including lighting, lightning protection, and fire alarm systems.Thorough understanding of interlocking systems is essential.Proficient in BS7671 standards (essential).Control & Instrumentation Responsibilities:Design control systems and instrumentation setups, including loop diagrams and instrument schedules.Expertise in Programmable Logic Controllers (PLC) hardware and software design.Develop I/O, alarm, and trip schedules.Design control panels, including general arrangements, schematic diagrams, wiring diagrams, and parts lists.Join our team and flourish.Become an integral part of our innovative nuclear team, composed of industry-leading experts. Collaborate with top civil, mechanical, electrical, and process engineers to execute a broad spectrum of exciting projects, ranging from small-scale initiatives to expansive endeavors, guiding them from concept through to completion. At AECOM, you will thrive in an inclusive and forward-thinking environment where your contributions are recognized and valued.We also offer a variety of core and personalized benefits tailored to support your well-being and future aspirations, designed to fit your lifestyle.

Mar 3, 2026

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Senior Electrical, Control & Instrumentation Engineer (Nuclear)

AECOM

Full-time|On-site|Warrington

Begin your journey with us and watch your career flourish.“Are you prepared to join a group of skilled engineers and influence the future of the Nuclear Industry?”As our Nuclear Team in Warrington expands, we invite passionate EC&I Engineers with a proven record in regulated and quality-compliant systems to apply. This is a remarkable opportunity to elevate your career with a leading industry innovator, offering an extensive and growing portfolio of projects.You'll become a vital member of a diverse and dynamic team, making significant contributions to project management and execution. Collaborating closely with AECOM's exceptional engineering team, you'll provide expert guidance and technical supervision in nuclear EC&I engineering. Your role will be critical in the design, development, and execution of Electrical, Control, and Instrumentation (EC&I) systems in nuclear facilities, ensuring the reliability, efficiency, and safety of nuclear operations and infrastructure. We seek individuals who excel in roles requiring sound design judgement and where engineering excellence is paramount.Key Responsibilities:Lead the design and engineering of EC&I systems for nuclear projects, ensuring compliance with regulatory standards and project specifications.Create detailed specifications, drawings, and technical documentation for EC&I systems, maintaining accuracy and adherence to safety standards.Offer technical leadership and mentorship to a team of engineers and technicians, promoting a culture of innovation and excellence.Work collaboratively with multidisciplinary teams to seamlessly integrate EC&I solutions within overall project frameworks.Conduct feasibility studies, risk assessments, and impact analyses to inform decision-making processes.Effectively manage project budgets, schedules, and resources to meet project milestones and objectives.Engage in the commissioning, testing, and validation of EC&I systems, ensuring functionality and performance align with operational requirements.Communicate with clients, stakeholders, and regulatory bodies to facilitate project approvals and compliance.Join us in our growth journey.Become part of our vibrant nuclear team, which features a collection of leading industry experts. Collaborate with top-notch civil, mechanical, electrical, and process engineers to deliver an array of compelling projects, ranging from small initiatives to large-scale ventures, from conception to completion. At AECOM, you’ll thrive in an inclusive and progressive environment where your contributions are highly valued.And let’s not overlook the advantages at AECOM. You will enjoy a variety of core and personalized benefits designed to support your future and well-being, tailored to fit your lifestyle.

Mar 3, 2026

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Assystem

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Principal Electrical, Control and Instrumentation Engineer

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