Data Engineer
Confirmed on the employer's own hiring board on Oct 25, 2026. First seen by Alion on Jan 23, 2026. Assystem scores B on the Alion truth index.
About Assystem
At Assystem, our mission is to accelerate the energy transition worldwide. Our 8,000 Switchers blend historical engineering expertise with cutting-edge digital technologies to drive this change. Join us in revolutionizing the energy sector and making a significant global impact.
Why Join the Community of Switchers?
Be part of one of the top three largest nuclear engineering companies globally. At Assystem, you'll contribute to groundbreaking projects that push the boundaries of innovation and engineering excellence. Join a community committed to driving forward the future of energy.
The Job Mission
The Data Engineer is responsible for designing, building, testing, and operating robust data products that underpin Assystem’s analytics and reporting capability. Working as part of a multidisciplinary Information Management Pod, the role translates business and architectural designs into scalable, secure, and maintainable data solutions.
The Data Engineer works closely with Performance Analysts and Data Architects to deliver high-quality data pipelines and products that enable trusted insight and decision-making across major nuclear programmes.
Key Responsibilities
Review business objectives, requirements, and functional designs to assess feasibility and define appropriate technical implementation approaches
Design and engineer data products and services that integrate seamlessly with business systems and processes, aligned to architectural standards
Develop data products using Databricks, Power BI, and other appropriate technologies, applying robust, scalable, and maintainable engineering practices
Build and maintain ingestion, transformation, and load routines to support the organisation’s analytics platform
Test data products to ensure they meet functional, quality, performance, and security requirements
Operate and support live data products, improving cost, performance, and reliability through optimisation, monitoring, and continuous improvement
Support troubleshooting and resolution of data quality or performance issues across the data pipeline
Contextual Information
The Data Engineer operates within an Information Management Pod, delivering technical solutions based on architectures defined by the Data Architect and requirements captured by the Performance Analyst. The role is fundamental to ensuring that analytics platforms are supported by reliable, well-engineered data pipelines.
All activities are governed by the Information Design Authority (IDA) process, which ensures consistency between requirements, architecture, and technical delivery. Any deviations identified during development or operation must be formally captured and managed through the IDA governance framework.
This role suits an engineer who enjoys working in regulated, safety-critical environments and who can balance technical excellence with strong collaboration across business and delivery teams.
Qualifications, Knowledge & Skills
Essential
Experience designing and developing data pipelines and products within an analytics or reporting environment
Strong working knowledge of SQL or Python for data transformation, validation, and troubleshooting
Experience developing and supporting data visualisation solutions (Power BI preferred)
Understanding of data integration, reconciliation techniques, and data quality controls
Strong analytical and numerical skills, with the ability to communicate technical concepts clearly to non-technical stakeholders
Ability to work independently, manage multiple priorities, and collaborate effectively across multidisciplinary teams
Proficiency with Microsoft Office tools
General engineering knowledge or experience working in engineering, construction, or asset-intensive environments
Desirable
Experience using Databricks or similar cloud-based data platforms
Familiarity with data governance frameworks and working in highly regulated environments (e.g. nuclear, infrastructure, or safety-critical sectors)
Knowledge of advanced Power BI features and VBA for automation
Experience working within structured delivery environments with formal governance and change control
Why Apply?
Join Assystem and become a key player in delivering critical nuclear projects that shape the future of energy. Embrace this opportunity to excel in a dynamic environment where your expertise and leadership will drive global innovation.
Your Benefits Package
Hybrid Working - Flexibility to work from home and the office
25 Days Annual Leave + Bank Holidays
Buy & Sell Holiday - Make your time off work for you
8% Company Pension Contributions
Income Protection & 3x Salary Death-in-Service Cover
Competitive Sick Pay - Support when you need it
Healthcare Cash Plan - Claim back on dental, optical & more
Free Digital Gym Access - Expert-led fitness classes
Exclusive Discounts - Restaurants, days out & top brands
24/7 Employee Support Line - Mental health, financial & legal help
Cycle to Work Scheme - Save money & go green
Free Flu Jabs & Eye Test Vouchers
Paid Professional Membership Fees
Volunteer Days - Make a difference on company time
We are committed to equal treatment of candidates and promote, as well as foster all forms of diversity within our company. We believe that bringing together people with different backgrounds and perspectives is essential for creating innovative and impactful solutions. Skills, talent, and our people’s ability to dare are the only things that matter!.
Bring your unique contributions and help us shape the future.
We are committed to equal treatment of candidates and promote, as well as foster all forms of diversity within our company. We believe that bringing together people with different backgrounds and perspectives is essential for creating innovative and impactful solutions. Skills, talent, and our people’s ability to dare are the only things that matter !. Bring your unique contributions and help us shape the future.