Senior FS Engineer

Senior FS Engineer

Full-Time 60000 - 80000 £ / year (est.) No working from home possible
Gravitas Group

At a Glance

  • Tasks: Lead technical direction of a high-traffic platform and enhance system performance.
  • Company: Forward-thinking PropTech platform transforming property industry insights.
  • Benefits: Permanent role with competitive salary and opportunities for growth.
  • Other info: Join a dynamic team focused on innovation and security in tech.
  • Why this job: Make a real impact using cutting-edge tech and AI in a collaborative environment.
  • Qualifications: 4-6 years in software development, strong TypeScript skills, and AI tool experience.

The predicted salary is between 60000 - 80000 £ per year.

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.

Role Overview

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.

Key Skills & Experience

  • 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

Key Responsibilities

  • 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

Requirements

  • 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

Nice to Have

  • 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.

Senior FS Engineer employer: Gravitas Group

Our client is an exceptional employer, offering a vibrant and innovative work culture that empowers Senior FS Engineers to take ownership of impactful projects within the PropTech sector. With a strong emphasis on professional growth, employees benefit from collaborative teamwork, cutting-edge technology, and opportunities to enhance their skills in a supportive environment located in London. The company prioritises quality and security, making it an ideal place for those looking to make meaningful contributions while advancing their careers.

Gravitas Group

Contact Details:

Gravitas Group Recruitment Team

StudySmarter Expert Advice🤫

We think this is how you could land Senior FS Engineer

Tip Number 1

Network like a pro! Reach out to people in the industry, attend meetups, and connect with potential colleagues on LinkedIn. You never know who might have the inside scoop on job openings or can put in a good word for you.

Tip Number 2

Show off your skills! Create a portfolio showcasing your projects, especially those involving TypeScript and AI tools. This will give potential employers a taste of what you can do and set you apart from the crowd.

Tip Number 3

Prepare for interviews by brushing up on your technical knowledge and soft skills. Practice coding challenges and be ready to discuss your past experiences, especially how you've tackled complex projects and improved system robustness.

Tip Number 4

Don't forget to apply through our website! It’s the best way to ensure your application gets seen by the right people. Plus, it shows you're genuinely interested in joining our innovative team.

We think you need these skills to ace Senior FS Engineer

TypeScript
AI Coding Tools
Full-Stack Development
Security Best Practices
PostgreSQL
DuckDB
Elasticsearch

Some tips for your application 🫡

Show Off Your Skills:Make sure to highlight your experience with TypeScript and AI coding tools in your application. We want to see how you've used these skills in real projects, so don’t hold back!

Tailor Your Application:Take a moment to customise your CV and cover letter for this role. Mention specific projects where you’ve taken ownership and improved system robustness, as that’s what we’re all about at StudySmarter.

Be Clear and Concise:When writing your application, keep it straightforward. We appreciate clarity, so make sure your points are easy to read and get straight to the point about your relevant experience.

Apply Through Our Website:We encourage you to apply directly through our website. It’s the best way for us to receive your application and ensures you’re considered for this exciting opportunity!

How to prepare for a job interview at Gravitas Group

Know Your Tech Stack

Make sure you’re well-versed in TypeScript and the full-stack development process. Brush up on your knowledge of PostgreSQL, DuckDB, and Elasticsearch, as these are key components of the role. Being able to discuss your experience with these technologies will show that you're ready to take ownership of the platform.

Showcase Your AI Skills

Since the role involves leveraging AI-assisted development tools, be prepared to discuss your experience with tools like GitHub Copilot or Claude Code. Share specific examples of how you've used these tools to enhance your coding efficiency or improve code quality in past projects.

Demonstrate Security Awareness

Security is a big focus for this position, so come equipped with knowledge about security best practices for web applications. Be ready to talk about any vulnerabilities you've encountered in previous roles and how you addressed them. This will highlight your proactive approach to maintaining a secure environment.

Collaborative Mindset

This role requires collaboration with cross-functional teams, so be prepared to discuss your experience working in team settings. Share examples of how you've contributed to team projects, aligned on architecture, or driven improvements in code quality. This will show that you can thrive in a collaborative and innovative culture.