Mission Statement & Summary
We’re hiring a Lead AI Engineer to own the design and delivery of AI systems across the business.
This is a hands-on role focused on building production-grade solutions using LLMs and agentic systems, embedding AI directly into core business processes rather than building isolated prototypes. You’ll take high-value problems and turn them into scalable, reliable systems used in real workflows, driving measurable business outcomes.
You’ll have ownership of technical direction, architecture, and implementation, translating defined business priorities into robust, production-ready systems. You’ll make key technical decisions and work hands-on alongside engineers to deliver solutions that are reusable, scalable, and built for long-term impact.
How You’ll Contribute
Own the technical direction, architecture, and implementation of AI systems end-to-end
Design and build LLM-powered and agent-based solutions from concept to production
Establish engineering standards, patterns, and reusable components across use cases
Own key technical decisions on models, tooling, infrastructure, and system design
Ensure systems are robust, observable, and production-ready (evaluation, monitoring, guardrails)
Provide technical leadership and direction to engineers contributing to AI initiatives
We're Looking For These Essential Skills
Proven track record of owning the technical direction and delivery of production-grade AI systems end-to-end
Experience designing and delivering complex AI systems across multiple use cases or domains
Deep expertise in generative AI / LLMs, including orchestration, prompting, and evaluation
Experience building agentic or multi-step AI systems
Strong software engineering fundamentals including APIs, system design, and cloud-based architectures
Ability to drive technical direction in ambiguous or fast-moving problem spaces
Experience influencing engineering standards and practices across multiple projects
Its a Plus If You Also Have These Skills
Experience building AI platforms or reusable frameworks and patterns
Familiarity with LLMOps / MLOps and production evaluation practice
Experience embedding AI into core business processes or enterprise systems
Experience working in large-scale or regulated enterprise environments
What's in it for you?
- 26 days holiday, rising to 30 with service
- A holiday buy scheme (up to 5 extra days)
- Double matched pension, with up to 14% from NewDay
- Generous annual performance bonuses
- Private medical insurance with Bupa, including mental health support and cancer care
- 26 weeks paid maternity, adoption and shared parental leave
- Free breakfast and lunch in the office every day, provided by our in-house chefs
…and more, which you can explore here!
At NewDay, we value all types of diversity. We’re an equal opportunity employer and believe that our differences create a vibrant, authentic working culture. We want all our colleagues to feel able to bring their whole selves to work. We don’t discriminate on the basis of protected characteristics or identities. We make sure that every job is crafted to be inclusive and that people with disabilities or caring responsibilities can take part in the application and interview process.
Tell us if you need accommodations: We’ll put reasonable adjustments in place to support you.
We work with Textio to make our job design and hiring inclusive.
PermanentSkills Required
- Proven experience leading the development and deployment of GenAI systems in enterprise environments
- Deep hands-on expertise with LLMs, RAG architectures, vector databases, and orchestration frameworks
- Strong understanding of prompt design, context management, and GenAI-specific risks
- Experience integrating GenAI solutions with enterprise systems and cloud platforms
- Excellent communication and stakeholder engagement skills
What We Do
At NewDay, our business is focused on a single, clear and defining purpose: to help people move forward with credit. We provide nearly 4 million customers with responsible access to credit, underpinned by best-in-class customer service and exceptional user experience. Our in-house, highly scalable digital platform alongside our proprietary credit decisioning capability unlocks our competitive advantage. Our broad credit product offering enables instalment finance, BNPL, 0% finance and carded and digital revolving credit. We operate multiple direct-to-consumer products and a range of credit solutions with some of the UK’s most loved brands. Our underwriting capability and experience allow us to responsibly say yes to more UK customers making us a merchant partner of choice. We partner to harness the power of data to drive commerce across the UK, creating value at scale.
