Lead Software Engineer

Sadler Recruitment Ltd; Cardiff; On-site; GBP 70,000 - 90,000; Full time

Job summary

A fast-growth software company in Cardiff is seeking a Lead Software Engineer to deliver advanced insuretech features. In this role, you'll manage both frontend and backend development using React, Golang, and AWS technologies. Collaboration with AI engineers and UX designers is key, as you integrate GenAI pipelines and drive code quality. This is a unique opportunity to shape the technical direction in an ambitious firm that values innovation and autonomy, with a remuneration package up to £90,000 annually.

Benefits

Stock options

Qualifications

• Extensive experience as a Senior Full Stack Developer.
• Genuine passion/experience with LLMs and agentic architectures.
• Comfortable with AWS-based scalable architecture.

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.

Skills

React

TypeScript

Golang

Python

AWS

Tools

CloudFormation

Lambda

Job description

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.

• Frontend: React / TypeScript
• Backend: Golang (primary), Python (supportive for AI integrations)
• Infrastructure: AWS (ECS, S3, Lambda, CloudFormation, Route53)

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. You’ll 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)

If interested, please send your CV in today.

Required Skills:

Proof CI/CD Options Pipelines Ownership Salary React Decision-Making AWS Features DevOps Architecture Insurance Infrastructure TypeScript Strategy MongoDB Software Testing Engineering Python Business Leadership