Senior Full Stack Engineer
4 days ago
Bath
As our new Senior Full Stack Engineer, you will play a key role in the end-to-end delivery of products and services, owning a significant portion of each delivery from data and backend services through to user-facing interfaces. Working within a fast-paced, AI-first engineering team, you will help deliver high-quality, scalable, and supportable solutions at speed. This is a hands-on engineering role where you will actively design, build, test, and maintain software services. You will be responsible for writing production-quality code, conducting peer code reviews, validating solutions through automated and manual testing, and ensuring the reliability, performance, and maintainability of everything you ship. In this varied role, you will: • deliver services end to end - data through to interface, with their tests and evaluations - so that the team ships to done inside the time box, • build from harness scaffolding, rules files and the skills library so that the floor is inherited by default, • own the output of agentic workflows, whoever or whatever wrote it, so that the team ships work it understands and can stand behind, • keep progress legible and raise blockers and scope risk the day they appear so that a fixed time box is protected by honest, early signalling, • pay down debt and clear logged exceptions with the Architect at cooldown, and feed build reality into the harness backlog, so that every bet starts from a higher floor than the last, • take on harder work and a growing share of review cycle on cycle, so that capability deepens and delivery does not bottleneck on the leads, • proactively track industry trends, emerging tools and agentic engineering practice, and self-initiate the learning needed to apply them - trialling promising techniques and approaches in cooldown and sharing what works back into the harness, rules files and skills library. We are looking for: • strong, current full-stack engineering capability with hands-on delivery in an Azure and Azure DevOps (ADO) ecosystem, • fluent practical coding in Python and JavaScript/TypeScript, working comfortably across back-end services, front-end interfaces and automation scripting, • consideration for UI/UX best practices and emerging design trends, • the ability to take a slice from data through to interface, including its tests and evals, without waiting for it to be specified in detail, • comfortable building within CI/CD pipelines and infrastructure-as-code, to the secure, observable and tested defaults the pipeline enforces, • sound grounding in security, observability and test and evaluation automation, enough to leave a deliverable operable by a team that did not build it, • practical experience of AI-first, agentic delivery - working from rules files, known-good templates and a curated skills library, and writing evals for AI-generated output, • sound judgement on where agents help and where human design must come first, with the discipline to pace throughput to comprehension, • habit of honest, early signalling on progress, blockers and scope, and of contributing improvements back into shared tooling and standards, • a working knowledge across multiple AI tools and models, with the judgement to select the appropriate tool/model based on the development task, complexity, security requirements and expected outcome, • a strong prompt and context engineering skills, including creating effective instructions, rules and contextual information appropriate to the goal, • experience with agentic software engineering workflows, including orchestrating AI agents to perform multi-step development activities while maintaining appropriate human oversight., • A combined pension contribution of up to 20%., • Career progression and professional development opportunities., • 25 days’ holiday rising to 28 with length of service., • The opportunity to sell up to five days of holiday every year., • The opportunity to buy up to ten days of holiday each year (subject to conditions)., • A healthcare package that allows you to claim back healthcare costs., • Life assurance of up to eight times your salary., • The opportunity to lease a new electric car through salary sacrifice (subject to conditions)., • Cashback and discounts from more than 3,000 retailers., • One paid volunteering day each year., • Enhanced family leave and pay arrangements., • Access to an interactive health and wellbeing platform., • Support from trained mental health first aiders., • A £1,000 referral fee if you recommend someone who is successfully recruited by us. YTL UK is part of the international YTL Group based in Kuala Lumpur. The UK companies include: • Wessex Water - one of the top-performing water and sewerage companies in England and Wales, serving 2.9 million people across the South West, • YTL Developments - a major UK developer currently redeveloping a 450-acre former airfield into an award-winning, exciting mix of houses, apartments, schools, commercial space, restaurants and hotels, to make a truly sustainable new community, • YTL Construction UK - a top 20 UK contractor providing fully integrated services to infrastructure, residential, commercial, industry, energy and environmental sectors, • YTL Live - the development and operation of an entertainment complex that includes a 20,000-capacity arena, conferencing and exhibition space, • plus a number of other retail, environmental and specialist businesses. Our people tell us that YTL UK is a great place to work, which is why so many of them stay with us! You will have a unique opportunity to develop and progress your career within such a diverse group. We are passionate about diversity and inclusion - with that in mind, all applicants are welcome. We are delighted to have signed the Armed Forces Covenant and are a Disability Confident Employer. If you require reasonable adjustments to be made during the recruitment process, please inform a member of our Recruitment team. #J-18808-Ljbffr