Senior Full Stack Engineer in London

At AtkinsRéalis Nuclear, we’re developing digital products that are helping transform how complex nuclear infrastructure is designed, constructed, operated, maintained and decommissioned. We’re looking for a Senior Full Stack Engineer to help shape and develop a suite of extended reality (XR) products that connect field teams with project information, digital work packs, asset data, spatial models, evidence capture and remote expert support. You’ll combine hands-on full stack engineering with technical leadership, working across modern web applications, cloud services, APIs, data integrations and mobile deployment.

You’ll collaborate with product managers, designers, engineers, subject-matter experts and client stakeholders to turn promising ideas and existing capabilities into secure, scalable and maintainable products that deliver real-world value. As a senior member of the team, you’ll help shape technical direction and architecture while supporting others to develop their knowledge and confidence. You’ll have space to share your ideas, explore different approaches and contribute to engineering practices that enable our products and people to grow.

Your role as a Senior Full Stack Engineer includes:

• Developing and evolving full stack products, building modern applications using React, JavaScript, TypeScript, cloud-native services and well-structured back-end APIs.
• Helping shape our technical architecture, making thoughtful decisions that support scalable, secure and maintainable products across web, cloud, XR and engineering data workflows.
• Supporting mobile deployment, contributing to applications built for Android and iOS using Capacitor or similar technologies.
• Connecting products, data and engineering workflows, developing integrations with document, model, asset and information sources, including FME or comparable data transformation and automation tools.
• Developing and supporting cloud solutions, building and maintaining Azure-hosted services, deployment pipelines and supporting infrastructure for product development and delivery.
• Collaborating across disciplines, working with product managers, designers and domain specialists to understand user needs and translate complex construction, engineering and nuclear requirements into practical digital solutions.
• Championing good engineering practices, contributing to technical decisions, code reviews, testing strategies, CI/CD and secure development while sharing knowledge and supporting other engineers.
• Supporting products in real-world environments, contributing to demonstrations and pilot deployments, troubleshooting issues and continuously improving performance, reliability, usability and security.

You’ll have the opportunity to influence how the product suite evolves while remaining close to the technology and contributing directly to delivery.

We’re looking for someone with strong full stack engineering foundations who enjoys combining hands-on development with collaboration, technical leadership and problem-solving. You don’t need to have worked with every technology or industry area we use. What matters is that you bring the depth of experience and engineering judgement needed to make considered technical decisions, support others and help guide products from development into reliable real-world use.

You may thrive in this role if you:

• Have strong experience developing modern full stack applications, with hands-on knowledge of React, JavaScript and TypeScript and experience designing or integrating back-end services and REST APIs.
• Have experience developing and operating solutions in Microsoft Azure, alongside modern practices such as Git-based source control, automated testing and CI/CD.
• Have experience with mobile application deployment, ideally using Capacitor for Android and/or iOS, or bring transferable experience with comparable technologies.
• Understand software architecture, application security and maintainable engineering practices, and are comfortable making and communicating thoughtful technical decisions.
• Have experience integrating different sources of data, documents, models or workflows. Experience with FME, CAD, BIM, GIS, asset information or common data environments would be particularly valuable.
• Enjoy working collaboratively across disciplines, translating complex user or business needs into practical technical solutions and explaining your thinking clearly to both technical and non-technical colleagues.

We’d also welcome experience or an interest in XR, augmented or mixed reality, spatial computing, digital twins or real-time platforms such as Unity, NVIDIA Isaac Sim or Unreal Engine. These are valuable additions, but we don’t expect one person to bring experience in every area. Knowledge of containerisation, infrastructure as code, SaaS products or configurable enterprise platforms could also be useful, as could an interest in emerging technologies such as computer vision, AI, robotics, IoT and 3D visualisation. Experience within nuclear, construction, infrastructure or another regulated or safety-critical environment can be valuable, but we’re equally interested in relevant experience from other sectors and the different perspectives you could bring.

Most importantly, we’re looking for someone who is collaborative, thoughtful and curious, who enjoys sharing their knowledge and helping others develop, and who wants to build high-quality digital products that make a meaningful difference to how complex projects are delivered.

Explore the rewards and benefits that help you thrive – at every stage of your life and your career. Enjoy competitive salaries, employee rewards and a brilliant range of benefits you can tailor to suit your own health, wellbeing, financial and lifestyle choices. Make the most of a myriad of opportunities for training and professional development to grow your skills and expertise. And combine our hybrid working culture and flexible holiday allowances to balance a great job and fulfilling personal life.

This role may require security clearance and offers of employment will be dependent on obtaining the relevant level of clearance. If this is necessary, it will be discussed with you at interview. The vetting process is delivered by United Kingdom Security Vetting (UKSV) and may require candidates to provide proof of residency in the UK of 5 years or longer.

We are committed to creating a culture where everyone feels that they belong - a place where we can all be ourselves, thrive and develop to be the best we can be. So, we offer a range of family friendly, inclusive employment policies, flexible working arrangements and employee resource groups to support all employees. As an Equal Opportunities Employer, we value applications from all backgrounds, cultures and ability. As a Disability Confident Leader, we are committed to offering an interview to all applicants who have a disability and meet the essential criteria. If you would like to be considered under this commitment, please let us know at the application stage.