At a Glance
- Tasks: Lead the development of innovative Data & AI products that transform user experiences.
- Company: Join Tesco, a leader in retail innovation with a focus on technology.
- Benefits: Enjoy competitive pay, health perks, hybrid work, and growth opportunities.
- Other info: Be part of a vibrant team with excellent career advancement potential.
- Why this job: Shape the future of AI while making a real impact in a dynamic environment.
- Qualifications: Experience in software engineering, especially with LLM applications and collaborative skills.
The predicted salary is between 70000 - 90000 € per year.
The Product & Engineering team is responsible for designing, building and scaling Data & AI products that power intelligent experiences, decisions and actions across the Tesco ecosystem. Working in close partnership with business and technology teams across Stores, Finance, People, Customer and Commercial, we enable the seamless build, integration and adoption of Data & AI capabilities that deliver measurable value.
This is an opportunity to play a leading role in shaping a new generation of Data & AI products, from problem definition through to launch and scale, driving meaningful impact for Tesco colleagues and the wider business. This is a hybrid role with the expectation of being based at our London and Welwyn Garden City offices 3 days a week.
The Software Development Engineer III is a senior, hands-on engineer specialising in building and operating GenAI powered products, including LLM based applications and agentic workflows that enable intelligent decision making and automation. The role spans the full product lifecycle, translating complex business problems into production grade solutions across data, backend services, APIs and user facing applications, with a strong focus on reliability, guardrails and real user impact. The role also provides technical leadership by designing shared GenAI capabilities, supporting live systems and raising engineering and AI delivery standards across the team through mentoring and rigorous design practice.
Responsibilities- Data & AI Product Development: Take ideas from discovery through rapid prototypes to production grade solutions that combine data, user facing applications and backend services.
- Work closely with product managers, designers, data science and engineering teams to translate business needs into well designed technical solutions.
- Design and deliver LLM based applications and AI agents that enable intelligent decision making and automation, applying pragmatic engineering patterns and appropriate guardrails.
- Design and consume APIs that support responsive, intuitive UIs, working across backend, data and frontend layers to deliver coherent, production-ready experiences.
- Build shared capabilities (libraries, templates, services, prompts/config patterns, evaluation suites) that reduce duplication and enable other squads to adopt GenAI safely and consistently.
- Support and operate live systems, troubleshoot complex issues, perform root cause analysis and continuously improve reliability, quality and speed of delivery.
- Build and maintain web-based user interfaces using React.js, modern JavaScript / TypeScript, HTML and CSS, enabling colleagues to interact effectively with data and AI based tools.
- Promote strong software engineering practices across backend and frontend development, including CI/CD, testing, secure by default development, performance optimisation and observability.
- Support and operate live systems, troubleshoot complex issues, perform root cause analysis and continuously improve reliability, quality and speed of delivery.
- Provide hands‑on technical leadership through design reviews, mentoring and knowledge sharing, helping raise engineering standards across the team.
- Strong experience as a senior software engineer delivering and operating production systems.
- Solid backend engineering experience (e.g. Python or similar), including API design, testing, CI/CD and operational support.
- Practical experience building LLM-powered applications (e.g. copilots, assistants, agent based workflows), with a focus on reliability and real user impact.
- Good working knowledge of React.js and modern JavaScript / TypeScript, with experience building and maintaining production web interfaces.
- Proficiency with HTML and CSS, and an understanding of usability, accessibility and performance considerations.
- Experience working across data, backend and UI layers, collaborating with others rather than owning every layer in isolation.
- Ability to make thoughtful technical trade offs, communicate clearly with both technical and non-technical stakeholders and work effectively in a product led team.
Software Development Engineer III employer: WeAreTechWomen
At Tesco, we pride ourselves on being an exceptional employer, offering a dynamic work culture that fosters innovation and collaboration. As a Software Development Engineer III, you'll have the opportunity to lead the development of cutting-edge Data & AI products in a hybrid role based in our vibrant London and Welwyn Garden City offices. We are committed to your professional growth, providing ample opportunities for mentorship and technical leadership, all while ensuring a supportive environment that values your contributions and encourages meaningful impact across the business.
StudySmarter Expert Advice🤫
We think this is how you could land Software Development Engineer III
✨Tip Number 1
Network like a pro! Reach out to folks in your industry on LinkedIn or at meetups. A friendly chat can lead to opportunities that aren’t even advertised yet.
✨Tip Number 2
Show off your skills! Create a portfolio or GitHub repo showcasing your projects, especially those related to GenAI and LLM applications. This gives potential employers a taste of what you can do.
✨Tip Number 3
Prepare for interviews by practicing common technical questions and coding challenges. We recommend using platforms like LeetCode or HackerRank to sharpen your skills before the big day.
✨Tip Number 4
Don’t forget to apply through our website! It’s the best way to ensure your application gets seen by the right people. Plus, we love seeing candidates who are proactive!
We think you need these skills to ace Software Development Engineer III
Some tips for your application 🫡
Tailor Your CV:Make sure your CV reflects the skills and experiences that align with the Software Development Engineer III role. Highlight your experience with LLM-powered applications and backend engineering, as these are key to what we’re looking for.
Craft a Compelling Cover Letter:Use your cover letter to tell us why you’re passionate about Data & AI products. Share specific examples of how you've tackled complex problems in the past and how you can contribute to our team at Tesco.
Showcase Your Technical Skills:Don’t forget to mention your proficiency in Python, React.js, and modern JavaScript/TypeScript. We want to see how you’ve applied these skills in real-world projects, so be specific about your contributions.
Apply Through Our Website:We encourage you to apply directly through our website. It’s the best way for us to receive your application and ensures you’re considered for this exciting opportunity to shape the future of Data & AI at Tesco.
How to prepare for a job interview at WeAreTechWomen
✨Know Your Tech Stack
Make sure you’re well-versed in the technologies mentioned in the job description, especially Python, React.js, and LLM applications. Brush up on your API design skills and be ready to discuss how you've implemented these technologies in past projects.
✨Showcase Your Problem-Solving Skills
Prepare to discuss specific examples where you've taken complex business problems and translated them into effective technical solutions. Use the STAR method (Situation, Task, Action, Result) to structure your answers and highlight your impact.
✨Demonstrate Collaboration
This role involves working closely with various teams, so be ready to share experiences where you’ve collaborated with product managers, designers, or data scientists. Emphasise your ability to communicate effectively with both technical and non-technical stakeholders.
✨Ask Insightful Questions
Prepare thoughtful questions about the team’s current projects, challenges they face, and their approach to building GenAI products. This shows your genuine interest in the role and helps you assess if it’s the right fit for you.
