Senior AI Data Scientist in Welwyn Garden City

Senior AI Data Scientist in Welwyn Garden City

Welwyn Garden City Full-Time 36000 - 60000 ÂŁ / year (est.) No home office possible
Tesco Technology

At a Glance

  • Tasks: Create innovative AI solutions to enhance customer experiences and optimise operations.
  • Company: Join Tesco Technology, a leader in retail innovation and inclusivity.
  • Benefits: Enjoy competitive salary, annual bonuses, generous holiday, and private medical insurance.
  • Why this job: Make a real impact with cutting-edge AI technology in a collaborative environment.
  • Qualifications: Experience with LLMs and a passion for solving complex business challenges.
  • Other info: Flexible working patterns and a culture of continuous learning await you.

The predicted salary is between 36000 - 60000 ÂŁ per year.

About the Role

At Tesco, our Data Science team builds scalable solutions to complex business challenges across stores, online, supply chain, marketing and Clubcard. We apply advanced machine learning, generative AI, and large language models (LLMs) to personalise customer experiences, optimise operations and drive innovation. We work across several business domains, including customer experience, online, fulfilment, distribution, commodities, store operations and technology. Team members rotate across domains to broaden their expertise and impact. We foster a culture of continuous learning, dedicating 10% of the working week to personal development. Our team benefits from academic partnerships, regular knowledge‑sharing events and a collaborative, inclusive environment that values work‑life balance and professional growth.

Responsibilities

We are seeking a Senior AI Data Scientist to operate within a fast‑pacing team, to create new customer growth. Expect end‑to‑end ownership—rapid experimentation, fast shipping, and leaning in wherever the work takes you, beyond your job title. If you’re ambitious, hard‑working, and excited to build 0→1 against tall ambitions, you’ll thrive here. You will be designing and shipping production‑grade LLM systems and shared platform capabilities that power experiences for millions, solving cross‑cutting pain points with smart build‑vs‑buy decisions. You’ll work end‑to‑end—from rapid prototypes to production code—accelerating GenAI use cases across the business. While existing knowledge is valuable, a strong ability to learn quickly and apply new skills effectively is essential. The ideal candidate will be solution‑oriented, eager to stay current with the latest developments, and comfortable in a fast‑paced environment with ample room for creativity and problem‑solving.

Qualifications

  • Practical experience applying LLMs, including:
  • Managing context windows effectively
  • Selecting appropriate models for specific tasks
  • Implementing safety guardrails and alignment techniques
  • Decomposing complex tasks into model‑friendly components
  • In‑depth understanding of LLM architectures, training methodologies, and usage patterns.
  • Strong experience in evaluating and validating data pipelines and ML systems.
  • Familiarity with AI‑specific evaluation methods, including both quantitative metrics and qualitative assessments.
  • Ability to make well‑reasoned decisions grounded in technical understanding and real‑world constraints.
  • Pragmatic approach to experimentation and solution design.
  • Proven ability to understand complex business challenges and translate them into actionable AI solutions.
  • Track record of explaining complex technical concepts in a clear, concise manner to non‑technical audiences, including senior stakeholders and business leaders.
  • Experience guiding junior team members, fostering a culture of learning, and promoting best practices in AI.
  • Ability to work effectively with colleagues from diverse disciplines, such as software engineering, UX design, data analysis, product management, and business leadership.
  • Skilled at influencing decision‑making and gaining buy‑in, even in ambiguous or challenging environments.
  • Benefits

    • 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 (after 1 year’s service) 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.

    About Us

    Our vision at Tesco is to become every customer's favourite way to shop, whether they are at home or out on the move. Our core purpose is “Serving our customers, communities and planet a little better every day”. Serving means more than a transactional relationship with our customers. It means acting as a responsible and sustainable business for all stakeholders, for the communities we are part of and for the planet. We are proud to have an inclusive culture at Tesco where everyone truly feels able to be themselves. At Tesco, we not only celebrate diversity, but recognise the value and opportunity it brings. We're committed to creating a workplace where differences are valued, and make sure that all colleagues are given the same opportunities. We’re proud to have been accredited Disability Confident Leader and we’re committed to providing a fully inclusive and accessible recruitment process. For further information on the accessibility support we can offer, please click here. We’re a big business and we can offer a range of diverse full‑time & part‑time working patterns across our many business areas, which means that we can find something that works for you. We work in a more blended pattern – combining office and remote working. Our offices will continue to be where we connect, collaborate and innovate.

    Senior AI Data Scientist in Welwyn Garden City employer: Tesco Technology

    At Tesco Technology, we pride ourselves on being an exceptional employer that champions innovation and personal growth. Our Data Science team thrives in a collaborative environment where continuous learning is encouraged, offering 10% of the workweek for personal development, alongside competitive benefits such as an annual bonus scheme, generous holiday allowance, and comprehensive health support. With a commitment to inclusivity and a flexible working culture, we empower our employees to make a meaningful impact while enjoying a balanced work-life experience.
    Tesco Technology

    Contact Detail:

    Tesco Technology Recruiting Team

    StudySmarter Expert Advice 🤫

    We think this is how you could land Senior AI Data Scientist in Welwyn Garden City

    ✨Tip Number 1

    Network like a pro! Reach out to current or former Tesco employees on LinkedIn. A friendly chat can give you insider info and maybe even a referral, which can really boost your chances.

    ✨Tip Number 2

    Prepare for the interview by diving deep into Tesco's recent projects and innovations in AI. Show us that you’re not just another candidate; you’re genuinely interested in how you can contribute to their mission.

    ✨Tip Number 3

    Practice your problem-solving skills! Be ready to tackle real-world scenarios during interviews. We love candidates who can think on their feet and come up with creative solutions.

    ✨Tip Number 4

    Don’t forget to apply through our website! It’s the best way to ensure your application gets seen. Plus, it shows you’re serious about joining the Tesco team.

    We think you need these skills to ace Senior AI Data Scientist in Welwyn Garden City

    Machine Learning
    Generative AI
    Large Language Models (LLMs)
    Data Pipeline Evaluation
    Technical Decision-Making
    Experimentation
    Solution Design
    Communication Skills
    Mentoring
    Cross-Disciplinary Collaboration
    Problem-Solving
    Adaptability
    Continuous Learning
    Stakeholder Engagement

    Some tips for your application 🫡

    Tailor Your CV: Make sure your CV is tailored to the Senior AI Data Scientist role. Highlight your experience with LLMs and any relevant projects that showcase your skills in machine learning and data science. We want to see how you can bring value to our team!

    Craft a Compelling Cover Letter: Your cover letter is your chance to shine! Use it to explain why you're excited about the role at Tesco Technology and how your background aligns with our mission. Don’t forget to mention your passion for continuous learning and innovation.

    Showcase Your Problem-Solving Skills: In your application, give examples of how you've tackled complex business challenges with AI solutions. We love candidates who can think critically and creatively, so share those experiences that demonstrate your ability to make well-reasoned decisions.

    Apply Through Our Website: We encourage you to apply directly through our website. It’s the best way to ensure your application gets the attention it deserves. Plus, you’ll find all the details you need about the role and our company culture there!

    How to prepare for a job interview at Tesco Technology

    ✨Know Your LLMs Inside Out

    Make sure you brush up on your knowledge of large language models (LLMs) before the interview. Be ready to discuss how you've managed context windows, selected models for specific tasks, and implemented safety guardrails. This will show that you not only understand the theory but can also apply it practically.

    ✨Showcase Your Problem-Solving Skills

    Prepare examples of how you've decomposed complex tasks into manageable components in previous roles. Tesco is looking for someone who can tackle business challenges with a pragmatic approach, so be ready to share your thought process and the outcomes of your solutions.

    ✨Communicate Clearly with Non-Techies

    Since you'll need to explain complex concepts to non-technical stakeholders, practice articulating your ideas in simple terms. Think about how you can convey technical details without jargon, making it relatable to those outside the AI field.

    ✨Emphasise Continuous Learning

    Tesco values a culture of continuous learning, so highlight any recent courses, workshops, or self-study you've undertaken. Discuss how you stay current with industry trends and how you plan to keep evolving in your role as a Senior AI Data Scientist.

    Senior AI Data Scientist in Welwyn Garden City
    Tesco Technology
    Location: Welwyn Garden City

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