Jobs, fresher vacancy - Lead Software Engineer • Cardiff County

Company: Sadler Recruitment Ltd

Cardiff County

Job title: Lead Software Engineer Location: Cardiff, South Wales Salary: £60,000 - £90,000 per annum The company A start-up fast-growth software company has built a proof of concept, and they are driven to automate and use AI to manage risk for insurance companies. Their processes are powered by AI agentic workflows, enabling autonomous decision-making using CrewAI/LangGraph. They use Coheres Re-Rank technology to ensure people get the most relevant answers quickly, rather than having to dig through noise and Pinecone to surface the most relevant information from large datasets. In what is an exciting time for the business, they are ready to take the product onto the AWS marketplace and have been selected to be part of the Lloyds lab cohort. The CI/CD is in place, DevOps has been done, and there are plans for working in more insurance lines. We're seeking a Lead Software Engineer to deliver advanced insuretech features using agentic workflows and contextual engineering. You'll work closely with AI engineers and product owners to scale the platform into production across global insurers. The Lead Software Engineer needs to be well-read, passionate, and ideally have experience with LLMs and AI solutions. Tech Stack Frontend: React / TypeScript Backend: Golang (primary), Python (supportive for AI integrations) AI Layer: OpenAI, AWS Bedrock, RAG pipelines, CrewAI Infrastructure: AWS (ECS, S3, Lambda, CloudFormation, Route53) Database: MongoDB, Postgres, DocumentDB Responsibilities Lead development of front-end and backend features for the app Integrate GenAI pipelines into production-grade endpoints Collaborate with UX designers and AI teams Drive code quality, performance, and testing standards Experience Extensive experience as a Senior Full Stack Developer Agnostic coding skills Genuine passion/experience with LLMs and agentic architectures (e.g. CrewAI) Experience in document processing OR similar Comfortable with AWS-based scalable architecture Ability to lead the future state What We Offer This is a rare chance to take full ownership of the technical direction in a small, ambitious company where your decisions directly shape the product and the business. Youll have the autonomy to build with modern AI tools (and make changes), influence strategy at the highest level, and see the immediate impact of your work every day. This role is ideal for a skilled software engineer who's ready to lead a future team in building impactful, high-quality solutions. Remuneration Package Permanent contract Up to £90,000 per annum Stock options (can be discussed) Flexible working hours 37.5-hour working week If interested, please send your CV in today.Hybrid Working - 1 to 2 days in the office