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Posted 12 August, 2026

Automation Tester

Teksystems
London, ENG, GB Full Time

Job Description

Quality Engineer (AI / Agentic QA) Contract Location: Burgess Hill (23 days onsite) OR Burgess Hill (2 days) + London (1 day) Start: ASAP Overview: A Tier 1 Investment bank is seeking a Quality Engineer with strong experience in AI/LLM testing to join a greenfield, high-impact initiative focused on building an intelligent, personalised AI Companion within its mobile application. This role sits at the intersection of AI, automation, and quality engineering , with a focus on ensuring the reliability, safety, and effectiveness of AI-driven user experiences .The Project: You will be working on a next-generation AI-powered companion for card members , designed to support users throughout their travel journey. Key capabilities include:Pre-trip: Personalised recommendations and alertsDuring trip: Real-time updates (e.g. weather, events, disruptions)Post-trip: Insights, suggestions, and follow-upsThis is a highly personalised, context-aware system , requiring a modern and thoughtful approach to testing AI behaviour rather than traditional deterministic testing. Key ResponsibilitiesDesign and implement testing strategies for AI/LLM-based systemsDevelop and apply evaluation frameworks for AI outputsAssess and validate: Accuracy and relevance of responsesConsistency and reliabilityHallucinations and edge casesWork with LLM-as-judge patterns and automated evaluation techniquesDefine quality standards for non-deterministic AI systemsCollaborate closely with engineering, product, and data teamsContribute to best practices for Agentic QA and AI quality engineeringRequired Skills & experienceProven experience testing AI/ML or LLM-driven systemsStrong understanding of: LLM evaluation techniquesBehavioural/output validation of AI systemsTesting non-deterministic systemsexperience with AI quality frameworks and evaluation methodologiesAbility to think beyond traditional QA (pass/fail) and focus on AI outcome qualityExcellent problem-solving and analytical skillsJob Title: Automation TesterLocation: Burgess Hill, UKRate/Salary: 225.00 - 275.00 GBP DailyJob Type: ContractTrading as TEKsystems. Allegis Group Limited, Maxis 2, Western Road, Bracknell, RG12 1RT, United Kingdom. No. 2876353. Allegis Group Limited operates as an Employment Business and Employment Agency as set out in the Conduct of Employment Agencies and Employment Businesses Regulations 2003. TEKsystems is a company within the Allegis Group network of companies (collectively referred to as "Allegis Group"). Aerotek, Aston Carter, EASi, Talentis Solutions, TEKsystems, Stamford Consultants and The Stamford Group are Allegis Group brands. If you apply, your personal data will be processed as described in the Allegis Group Online Privacy Notice available at https://www.allegisgroup.com/en-gb/privacy-notices.To access our Online Privacy Notice, which explains what information we may collect, use, share, and store about you, and describes your rights and choices about this, please go to https://www.allegisgroup.com/en-gb/privacy-notices.We are part of a global network of companies and as a result, the personal data you provide will be shared within Allegis Group and transferred and processed outside the UK, Switzerland and European Economic Area subject to the protections described in the Allegis Group Online Privacy Notice. We store personal data in the UK, EEA, Switzerland and the USA. If you would like to exercise your privacy rights, please visit the "Contacting Us" section of our Online Privacy Notice at https://www.allegisgroup.com/en-gb/privacy-notices for details on how to contact us. To protect your privacy and security, we may take steps to verify your identity, such as a password and user ID if there is an account associated with your request, or identifying information such as your address or date of birth, before proceeding with your request. If you are resident in the UK, EEA or Switzerland, we will process any access request you make in accordance with our commitments under the UK Data Protection Act, EU-U.S. Privacy Shield or the Swiss-U.S. Privacy Shield.TPBN1_UKTJ