Senior system engineer jobs in HertfordCreate job alerts

Tesco Technology seeks a Senior React Native Engineer to advance the Digital Design System for React Native, building reusable UI foundations used across Tesco’s digital estate. You’ll help shape component APIs, accessibility, testing, documentation, and migration tooling while mentoring teams. Collaborating with design, accessibility, product engineering, and platform peers, you’ll ensure consistency across iOS, Android, RN, and Web, and enable faster onboarding through robust tooling and #J-18808-Ljbffr

Tesco is seeking a Senior iOS Engineer to advance the Digital Design System (DDS) for iOS. You’ll own reusable UI foundations, APIs, accessibility, and documentation across Tesco’s digital estate, collaborating with design, product, and platform teams to ensure scalable, consistent experiences for millions of customers. You’ll build reusable components, improve tooling and onboarding, and contribute to modern design-to-development workflows using Figma, MCP integrations, and AI-assisted tooling. #J-18808-Ljbffr

We're looking for a Senior React Native Engineer to help build and evolve Tesco's Digital Design System (DDS) implementation for React Native. The DDS Engineering team maintains the shared user interface foundations behind Tesco's digital ecosystem, supporting experiences used by millions of customers and colleagues every day. This is a senior platform engineering role focused on reusable UI foundations: component APIs, accessibility, quality, documentation, release discipline, and developer experience for teams across Tesco's digital estate. Prior design system experience is valuable, but not required; we're most interested in strong platform engineers who enjoy building shared foundations used by many teams. You'll work closely with design, accessibility, product engineering, and DDS peers to keep Tesco experiences consistent, scalable, and easy to build. What is in it for you We're all about the little helps. That's why we make sure our Tesco colleague benefits package takes care of you - both in and out of work. • Annual bonus scheme of up to 20% of base salary., • Holiday starting at 25 days plus a personal day (plus Bank holidays)., • Private medical insurance., • 26 weeks maternity and adoption leave (12 months service required at the qualifying date) at full pay, followed by 13 weeks of Statutory Maternity Pay or Statutory Adoption Pay, we also offer 6 weeks fully paid paternity leave., • Free 24/7 virtual GP service, Employee Assistance Programme (EAP) for you and your family, free access to a range of experts to support your mental wellbeing. The above information is a shortened summary, refer to our policies for full details You will be responsible for You'll create reusable components, improve developer tooling and documentation, support consuming teams, and help shape modern design-to-development workflows; using Figma, MCP integrations, agentic cloud workflows and AI-assisted engineering tools. This is not an "AI for AI's sake" role: the goal is practical engineering impact, better component reuse, fewer inconsistencies, stronger accessibility, faster onboarding, and safer migrations. You will need • Build, maintain, and evolve Tesco DDS platform components for React Native, with clear APIs, strong test coverage, accessibility support, and release discipline., • Translate DDS design intent, tokens, component states, and interaction guidance into production-ready React Native implementation., • Improve developer experience for consuming teams through documentation, examples, onboarding, contribution guidance, support, and migration tooling., • Collaborate with design, accessibility, product engineering, and platform peers to keep DDS implementation aligned across iOS, Android, React Native, and Web., • Use AI-assisted engineering tools responsibly where they improve quality, speed, consistency, or developer self-service., • Help make DDS documentation and component metadata more useful to humans and AI agents through MCP-ready context, examples, and clear constraints., • Lead through senior engineering craft: architectural judgment, code review, mentoring, pragmatic delivery, technical clarity, and high-quality communication., • Relocation Help - professional service to secure relevant working permits and other necessary documents, • Learning opportunities - certified technical training and learning platforms like Udemy, Pluralsight, and O'Reilly, • Learning culture and excellent opportunities to develop your career within your chosen field or something altogether new, • Varied and exciting projects to play a part in, • there is always something new and exciting in the pipeline You might know us as a supermarket, technology company or even for our award-winning mobile network. Truth is, we're all of those things, and much more. Our colleagues work with one goal in mind, helping to make every day a little better for our customers, colleagues and communities all over the world. No two customers are the same, neither are our colleagues. At Tesco, we champion a balance that lets you thrive both in and out of work. Spend 60% of your week collaborating with colleagues at our office locations or local sites and the rest remotely. Whether you're just kicking off your career, juggling passions, or navigating big life events, we're here to support you. We always welcome a conversation about flexible working, so talk to us throughout your application about how we can support. #J-18808-Ljbffr

Tesco is seeking a Senior React Native Engineer to advance the Tesco Digital Design System (DDS) for React Native. You’ll build reusable components, ensure accessibility, and maintain high-quality APIs used across Tesco’s digital estate. You’ll work with design, accessibility, product engineering, and platform peers to align across iOS, Android, React Native, and Web, while shaping modern design-to-development workflows. #J-18808-Ljbffr

Tesco UK • Welwyn Garden City • Hybrid • Full-Time • Permanent • Working hours 36 Within Tesco Data & Analytics, we help our customers and the communities where we operate get the most value from data. We build and run Tesco's data platforms, we architect and engineer data onto these platforms, provide capabilities and tools to the analytics community across Tesco, and develop data products at scale. Our Data Science teams are involved in a broad range of projects, spanning across supply chain, logistics, store and online. These include projects in the areas of Operations Optimisations, Commercial Decision Support (e.g. Forecasting and Range Optimisation), Online (e.g. Search and Recommendation) and Intelligent Edge (e.g. Computer Vision). Our Machine Learning Engineers work alongside our data scientists, helping with everything from development of tools and platforms, code optimisations through to deployment of solutions on the edge, cloud and big-data environments. We're all about the little helps. That's why we make sure our Tesco colleague benefits package takes care of you - both in and out of work. to find out more! • Annual bonus scheme of up to 20% of base salary., • Holiday starting at 25 days plus a personal day (plus Bank holidays)., • Private medical insurance., • 26 weeks maternity and adoption leave (12 months service required at the qualifying date) at full pay, followed by 13 weeks of Statutory Maternity Pay or Statutory Adoption Pay, we also offer 6 weeks fully paid paternity leave., • Free 24/7 virtual GP service, Employee Assistance Programme (EAP) for you and your family, free access to a range of experts to support your mental wellbeing. The above information is a shortened summary, refer to our policies for full details As a Senior Machine Learning Engineer, you'll be a significant contributor to the delivery of products in one of Tesco's most strategic technology areas. You'll work with other engineers, data scientists, product managers, systems engineers, and analytics professionals to help deliver valuable and innovative outcomes for our customers. You'll work within and across our Engineering and Data Science teams, delivering scalable products that improve how we serve our customers and run our operations. • Participating in group discussions on system design and architecture., • Working with product teams to communicate and translate needs into technical requirements., • Working with Data Scientists, Engineers and Product teams across the software lifecycle., • Delivering high quality code and solutions, bringing solutions into production., • Performing code reviews to optimise technical performance of data science solutions., • Supporting production systems, resolving incidents, and performing root cause analysis., • Continually look for how we can evolve and improve our technology, processes and practices., • Sharing knowledge with the wider engineering community., • Applying SDLC practices to create and release robust software. You come from either an Engineering or Data Science background, with a good understanding of the Data Science Toolkit (Programming, Machine Learning, MLOps etc) and bringing data science solutions into production. You therefore tick the majority of the following points: • A higher degree in engineering, computer science, maths or science., • Customer focus with the right balance between outcome delivery and technical excellence., • The ability to apply technical skills and know-how to solving real world business problems., • Demonstratable experience of building scalable and resilient software systems., • Experience of leading a small team of engineers to meet the technical delivery and business outcomes., • Commercial experience contributing to the success of high impact Data Science projects within complex organisations., • Experience in MLOps practices and tooling would be an advantage e.g. feature stores and model lifecycle management., • Experience with different programming languages and a good grasp of at least one language. The ideal candidate is fluent in Python., • Understanding of common data structures and algorithms., • Use of version control (Git) and related software lifecycle tooling., • Experience with tooling for monitoring, logging and alerting e.g. Splunk, New Relic or Grafana., • Experience of technologies such as Apache Spark, Databricks, Snowflake, or BigQuery to transform big-data optimised for Tesco scale, • Experience building solutions that run in the cloud, ideally Azure., • Experience with software development methodologies including Scrum & Kanban. You might know us as a supermarket, technology company or even for our award-winning mobile network. Truth is, we're all of those things, and much more. Our colleagues work with one goal in mind, helping to make every day a little better for our customers, colleagues and communities all over the world. No two customers are the same, neither are our colleagues. At Tesco, we champion a balance that lets you thrive both in and out of work. Spend 60% of your week collaborating with colleagues at our office locations or local sites and the rest remotely. Whether you're just kicking off your career, juggling passions, or navigating big life events, we're here to support you. We always welcome a conversation about flexible working, so talk to us throughout your application about how we can support. We're proud to be an accredited Disability Confident Leader, where everyone's welcome. That's why we commit to providing a fully inclusive and accessible recruitment process. If you need support with your application, for more information. And if you're interested in joining our team but don't tick every box, don't let that hold you back from applying. #J-18808-Ljbffr

We’re looking for a Senior iOS Engineer to help build and evolve Tesco’s Digital Design System (DDS) implementation for iOS. The DDS Engineering team maintains the shared user interface foundations behind Tesco's digital ecosystem, supporting experiences used by millions of customers and colleagues every day. This is a senior platform engineering role focused on reusable UI foundations: component APIs, accessibility, quality, documentation, release discipline, and developer experience for teams across Tesco’s digital estate. Prior design system experience is valuable, but not required; we’re most interested in strong platform engineers who enjoy building shared foundations used by many teams. You’ll work closely with design, accessibility, product engineering, and DDS peers to keep Tesco experiences consistent, scalable, and easy to build. You’ll create reusable components, improve developer tooling and documentation, support consuming teams, and help shape modern design-to-development workflows; using Figma, MCP integrations, agentic cloud workflows and AI-assisted engineering tools. This is not an “AI for AI’s sake” role: the goal is practical engineering impact, better component reuse, fewer inconsistencies, stronger accessibility, faster onboarding, and safer migrations. • Build, maintain, and evolve Tesco DDS platform components for iOS, with clear APIs, strong test coverage, accessibility support, and release discipline., • Translate DDS design intent, tokens, component states, and interaction guidance into production-ready iOS implementation., • Improve developer experience for consuming teams through documentation, examples, onboarding, contribution guidance, support, and migration tooling., • Collaborate with design, accessibility, product engineering, and platform peers to keep DDS implementation aligned across iOS, Android, React Native, and Web., • Use AI-assisted engineering tools responsibly where they improve quality, speed, consistency, or developer self-service., • Help make DDS documentation and component metadata more useful to humans and AI agents through MCP-ready context, examples, and clear constraints., • Lead through senior engineering craft: architectural judgment, code review, mentoring, pragmatic delivery, technical clarity, and high-quality communication., • Relocation Help - professional service to secure relevant working permits and other necessary documents, • Learning opportunities - certified technical training and learning platforms like Udemy, Pluralsight, and O'Reilly, • Learning culture and excellent opportunities to develop your career within your chosen field or something altogether new, • Varied and exciting projects to play a part in - there is always something new and exciting in the pipeline You might know us as a supermarket, technology company or even for our award-winning mobile network. Truth is, we’re all of those things, and much more. Our colleagues work with one goal in mind, helping to make every day a little better for our customers, colleagues and communities all over the world. No two customers are the same, neither are our colleagues. At Tesco, we champion a balance that lets you thrive both in and out of work. Spend 60% of your week collaborating with colleagues at our office locations or local sites and the rest remotely. Whether you're just kicking off your career, juggling passions, or navigating big life events, we're here to support you. We always welcome a conversation about flexible working, so talk to us throughout your application about how we can support. We're proud to be an accredited Disability Confident Leader, where everyone’s welcome. That’s why we commit to providing a fully inclusive and accessible recruitment process. If you need support with your application, click here for more information. And if you're interested in joining our team but don't tick every box, don't let that hold you back from applying. #J-18808-Ljbffr

Within Tesco Data & Analytics, we help our customers and the communities where we operate get the most value from data. We build and run Tesco’s data platforms, we architect and engineer data onto these platforms, provide capabilities and tools to the analytics community across Tesco, and develop data products at scale. Our Data Science teams are involved in a broad range of projects, spanning across supply chain, logistics, store and online. These include projects in the areas of Operations Optimisations, Commercial Decision Support (e.g. Forecasting and Range Optimisation), Online (e.g. Search and Recommendation) and Intelligent Edge (e.g. Computer Vision). Our Machine Learning Engineers work alongside our data scientists, helping with everything from development of tools and platforms, code optimisations through to deployment of solutions on the edge, cloud and big-data environments. As a Senior Machine Learning Engineer, you’ll be a significant contributor to the delivery of products in one of Tesco’s most strategic technology areas. You’ll work with other engineers, data scientists, product managers, systems engineers, and analytics professionals to help deliver valuable and innovative outcomes for our customers. You’ll work within and across our Engineering and Data Science teams, delivering scalable products that improve how we serve our customers and run our operations. In this role, responsibilities will include: • Participating in group discussions on system design and architecture., • Working with product teams to communicate and translate needs into technical requirements., • Working with Data Scientists, Engineers and Product teams across the software lifecycle., • Delivering high quality code and solutions, bringing solutions into production., • Performing code reviews to optimise technical performance of data science solutions., • Supporting production systems, resolving incidents, and performing root cause analysis., • Continually look for how we can evolve and improve our technology, processes and practices., • Sharing knowledge with the wider engineering community., • Applying SDLC practices to create and release robust software. You come from either an Engineering or Data Science background, with a good understanding of the Data Science Toolkit (Programming, Machine Learning, MLOps etc) and bringing data science solutions into production. You therefore tick the majority of the following points: • A higher degree in engineering, computer science, maths or science., • Customer focus with the right balance between outcome delivery and technical excellence., • The ability to apply technical skills and know-how to solving real world business problems., • Demonstratable experience of building scalable and resilient software systems., • Experience of leading a small team of engineers to meet the technical delivery and business outcomes., • Commercial experience contributing to the success of high impact Data Science projects within complex organisations., • Experience in MLOps practices and tooling would be an advantage e.g. feature stores and model lifecycle management., • Experience with different programming languages and a good grasp of at least one language. The ideal candidate is fluent in Python., • Understanding of common data structures and algorithms., • Use of version control (Git) and related software lifecycle tooling., • Experience with tooling for monitoring, logging and alerting e.g. Splunk, New Relic or Grafana., • Experience of technologies such as Apache Spark, Databricks, Snowflake, or BigQuery to transform big-data optimised for Tesco scale, • Experience building solutions that run in the cloud, ideally Azure., • Experience with software development methodologies including Scrum & Kanban. You might know us as a supermarket, technology company or even for our award-winning mobile network. Truth is, we’re all of those things, and much more. Our colleagues work with one goal in mind, helping to make every day a little better for our customers, colleagues and communities all over the world. No two customers are the same, neither are our colleagues. At Tesco, we champion a balance that lets you thrive both in and out of work. Spend 60% of your week collaborating with colleagues at our office locations or local sites and the rest remotely. Whether you're just kicking off your career, juggling passions, or navigating big life events, we're here to support you. We always welcome a conversation about flexible working, so talk to us throughout your application about how we can support. We're proud to be an accredited Disability Confident Leader, where everyone’s welcome. That’s why we commit to providing a fully inclusive and accessible recruitment process. If you need support with your application,click here for more information. And if you're interested in joining our team but don't tick every box, don't let that hold you back from applying. #J-18808-Ljbffr

Tesco (Tesco UK) seeks a Senior Android Engineer to build and evolve the Digital Design System (DDS) for Android. You will create reusable components, ensure accessibility, and improve developer tooling and documentation across Tesco’s digital estate. You’ll collaborate with design, product engineering, and DDS peers to keep experiences consistent and scalable, while leading with architectural judgment and mentoring across teams. #J-18808-Ljbffr

We’re looking for a Senior Android Engineer to help build and evolve Tesco’s Digital Design System (DDS) implementation for Android. Collaborate with design, accessibility, product engineering, and platform peers to keep DDS implementation aligned across iOS, Android, React Native, and Web. This

Tesco UK is seeking a Senior iOS Engineer to advance the Digital Design System (DDS) for iOS. You will build reusable components, ensure accessibility, and improve developer tooling across Tesco’s digital estate. You’ll collaborate with design, product engineering, and DDS peers to keep experiences consistent and scalable, while mentoring colleagues and driving strong engineering practices. #J-18808-Ljbffr

We’re looking for a Senior iOS Engineer to help build and evolve Tesco’s Digital Design System (DDS) implementation for iOS. Translate DDS design intent, tokens, component states, and interaction guidance into production-ready iOS implementation. Collaborate with design, accessibility, product e

Tesco UK is hiring a Senior React Native Engineer to advance the Digital Design System for React Native, building reusable UI foundations across Tesco's digital estate.

As a Software Development Engineer 3 you are in a senior Individual Contributor engineering role at Tesco. You will need Programming System Design Development Practise Infrastructure Software Security Operations and Maintenance Core Technology Development Lifecycle Product Methodologies Retail Techn

We’re looking for a Senior React Native Engineer to help build and evolve Tesco’s Digital Design System (DDS) implementation for React Native. Build, maintain, and evolve Tesco DDS platform components for React Native, with clear APIs, strong test coverage, accessibility support, and release dis

Tesco UK is seeking a Senior iOS Engineer to evolve the Digital Design System (DDS) for iOS, building reusable components with strong APIs, accessibility, and release discipline. You’ll work across Tesco’s digital estate with design, accessibility, product engineering and DDS peers to ensure con

We’re looking for a Senior React Native Engineer to help build and evolve Tesco’s Digital Design System (DDS) implementation for React Native. Build, maintain, and evolve Tesco DDS platform components for React Native, with clear APIs, strong test coverage, accessibility support, and release dis

You will build reusable UI foundations, APIs, accessibility, and release discipline across iOS, Android, and Web, collaborating with design, product engineering, and DDS peers. Tesco is seeking a Senior React Native Engineer to advance the Digital Design System (DDS) for React Native. You’ll mento

We’re looking for a Senior iOS Engineer to help build and evolve Tesco’s Digital Design System (DDS) implementation for iOS. Build, maintain, and evolve Tesco DDS platform components for iOS, with clear APIs, strong test coverage, accessibility support, and release discipline. Translate DDS desi

The ideal candidate holds a degree in Electrical/Power Systems Engineering and has at least 5 years of relevant experience with PSCAD. A recruitment consultancy is seeking a Consultant to support electrical engineering projects. This contract role is based in London, England, offering a chance to co

A Systems Engineer/Architect with an understanding of complex systems (ideally Weapon/Missile Systems), constituent sub-systems, platforms, and the systems architecting of them. Become a Weapon System Architect with a holistic understanding of the constituent Sub-Systems that make up a Weapon System

Work closely with System Engineers, Embedded Software Developers, Hardware Engineers, Integration Engineers and Backend and Frontend teams. PE Global is currently recruiting for an experienced Senior System Engineer to join our client based in Cambourne, UK. Minimum of 5 years’ experience in Syste

Work closely with System Engineers, Embedded Software Developers, Hardware Engineers, Integration Engineers and Backend and Frontend teams. Minimum of 5 years' experience in Systems Engineering within multidisciplinary systems. PE Global is currently recruiting for an experienced Senior System Engin

A Systems Engineer/Architect with an understanding of complex systems (ideally Weapon/Missile Systems), their sub-systems, platforms, and their systems architecture. Systems Engineer position on a key multinational project for next generation weapon systems. The project features challenging technica

Join Our Team as a System Integration Engineer – Drive Innovation in Embedded Systems. Are you passionate about pushing the boundaries of technology through seamless system integration? We’re seeking a talented System Integration Engineer to play a vital role in delivering cutting‑edge manufac

With continued demand and innovation across their product range, they are hiring a Senior Systems Engineer to lead technical delivery on new and existing mission‑critical systems. Experience with Systems Engineering, System Architecture, RF Systems, Datalinks, Verification, Requirements Capture, S

HCLTech is seeking a Senior Power Systems Engineer to perform and lead electrical network analyses, power system studies, and renewable integration assessments for diverse projects. The role is UK-based with remote work options, permanent in nature, and requires a strong background in power engineer

As a Senior Systems Design Engineer in the System Design Missiles Function you will deliver systems engineering expertise to major programmes developing the latest Complex Weapons capabilities for the UK and allied Armed Forces in response to advanced threats across Air, Land and Sea domains. The Sy

MBDA is seeking a Senior Manufacturing Engineer for the PCBA team at our Stevenage site.

Seeking a Senior Systems Engineer to develop, validate, and manage requirements for safety-critical systems in defense, security, and aerospace. Responsibilities include architecting complex systems, integration, analysis, testing, and providing technical guidance.

Senior Systems Engineer needed to design and integrate advanced systems, with experience in multidisciplinary systems.

Their Systems Engineers are encouraged to gain a breadth of knowledge across these domains to become subject matter experts in one or more product domain, or systems engineering specialism. Developing complex system architectures and sub-systems using a Model Based Systems Engineering approach. Syst

As a Senior Systems Engineer, you'll transform complex ideas into lifesaving, real-world systems used across military and commercial platforms. At the cutting edge of flight and safety systems, our engineers don't just build technology — they craft precision, reliability, and innovation in every c

Seeking a Senior System Modelling Engineer to design, implement, and validate cutting-edge EW solutions. Responsibilities include creating high-level system representations, guiding development teams, and contributing to national defence programs.

Applications for this post will only be accepted from current employees of West Lothian Council (this includes casual and agency staff who are currently undertaking work for us).Secondment opportunities must be discussed with your current line manager prior to submitting an application for this post

We're looking for a kind, compassionate and resilient Specialist Behavioural Support Worker to join our learning disabilities service in Hertfordshire.Driving is mandatory and sleep in shifts will be required.Want to feel like you have an exciting future? You'll feel at home here.Making you feel at

Fixed Term until 15 August 2027.West Lothian Council reserve the right to close this post early depending on applicant response levels.Simpsons Primary School and Nursery Class is situated in Westerinch, Bathgate and is open 50 weeks per year with staff working flexibly across the opening hours.This

What youll be doing Designing Automated Test Equipment to support production and product verification Translating system and product requirements into test architectures and specifications Developing and reviewing test strategies including ICT, Functional Test, and Boundary Scan Designing mea

Ability to work autonomously, with limited oversight from Team Leaders and Management Ability to work within agreed timescales Ability to work in a team and perform under pressure Degree in STEM (Science, Technology, Engineering, Mathematics) or similar Desirable experience Knowledge of Air Traffic

To understand the principles of electronic lift control systems, diagnose faults on systems and effect repairs. Lift Engineer - Channel Islands Relocate to the Channel Islands! Job Type: Permanent Location: Relocation to Jersey, Channel Islands, United Kingdom Salary: £50,000 to £60,000 + Vehicle

Childrens Senior Residential Support Worker Malvern, Worcestershire WR14.

Reporting to the warehouse supervisor Working in a team environment in a safe manner adhering to site Health & Safety regulations and Safe Systems of Work Loading vehicles ready for customer deliveries Ensuring quality is of the highest standards and all stock is handled with care so it arrives at o

This role could suit someone from a background working as aTest Equipment Design Support Engineer, Test Equipment Design Engineer, Test Equipment Hardware Engineer, Test Development Engineer, Hardware Design Engineer, Electronics Hardware Engineer, Test Systems Engineer or Test Equipment Engineer. C

Job Description Kindred are looking for hardworking and reliable cleaners to be based in an educational building located in: Loughton.Schedule: Monday to Friday, 16:30-19:45 Location: Willingale Rd, Debden, Loughton IG10 2BQ Requirements: Successful candidates will be required to undertake an e