Senior FS Engineer

Our client is a forward-thinking PropTech platform dedicated to transforming how the property industry accesses insights and intelligence. The organization fosters a collaborative and innovative culture, encouraging team members to take ownership of complex projects and leverage cutting edge tools like AI to enhance development workflows. This is a permanent, full time role ideal for a senior developer seeking to contribute to a growing company with a focus on quality, security, and technological advancement.

The role involves taking technical ownership of a flagship public facing platform, working across the full stack to improve system robustness and deliver new features. You will be responsible for maintaining and enhancing a multi component, live production system that serves thousands of users, with specific focus areas including expanding test coverage, implementing CI/CD pipelines, addressing security vulnerabilities, and leveraging AI assisted development tools.

As a Senior FS Engineer, you will lead the technical direction of a high traffic public platform, ensuring system stability, performance, and security. You will collaborate with cross functional teams to deliver reliable and innovative solutions, driving improvements in code quality and deployment processes. Your contribution will be vital in maintaining a secure, scalable, and efficient environment that supports the organization's growth.

• 4-6 years of professional software development experience
• Strong proficiency in TypeScript
• Demonstrable experience with AI coding tools (e.g., GitHub Copilot, Claude Code, Cursor)
• Experience in maintaining and improving existing codebases
• Familiarity with full stack development across multiple layers
• Knowledge of security best practices for web applications and infrastructure

• Take technical ownership of a multi component public facing platform serving thousands of users
• Maintain and enhance a SolidStart (TypeScript) web application with features like mapping and search
• Manage data flows across PostgreSQL, DuckDB, and Elasticsearch
• Expand test coverage and establish CI/CD quality gates to ensure deployment confidence
• Identify and resolve security vulnerabilities across the tech stack
• Leverage AI assisted development tools daily for coding, reviewing, and refactoring
• Collaborate with the Head of Software Engineering and other teams to align on architecture and priorities
• Work within an AWS environment, including Lambda functions, ECS, S3, and S3 infrastructure management tools

• Right to work in the UK
• On site availability in London for monthly team days
• 4-6 years of relevant professional experience
• Proficiency in TypeScript and full stack development
• Experience with AI assisted coding tools
• Ability to learn new languages and frameworks efficiently, especially with AI support
• Excellent code reading and understanding skills

• Experience with spatial data (PostGIS, GIS formats, mapping libraries)
• Familiarity with reactive frontend frameworks such as React, Svelte, or Vue
• Experience with AWS serverless architecture (Lambda, ECS, S3)

This is an excellent opportunity for a hands on, experienced developer to lead technical initiatives within a dynamic, innovative environment. If you are passionate about improving existing systems, security, and leveraging AI to elevate development practices, we encourage you to apply.