Senior Developer

Senior Developer

Location: Hybrid/Swindon (mostly home-based, with occasional travel to Swindon HQ)Package: Competitive salary + full benefits

At tmGroup, we're taking conveyancing into a brighter, smarter, and simpler future with our award-winning technology.

From instant quote tools and seamless client onboarding to comprehensive searches and robust risk management, we use our expertise in data, tech, and conveyancing to empower our clients to move forward with confidence.

We're looking for a Senior Developer to design, build, and enhance the next generation of our platforms and applications that power the UK Legal and Property sectors.

This is a full-stack role where you'll work across modern and legacy technologies to deliver high-performing, secure, and scalable software. You'll lead projects end-to-end-from concept to deployment-while championing best practice, mentoring developers, and contributing to our strong engineering culture.

Working within an Agile environment, you'll collaborate with Product, Architecture, and cross-functional teams to deliver new features, improve code quality, drive innovation, and continually enhance the developer experience.

What you'll do

• Design, develop, and maintain high-quality applications using a diverse tech stack (.NET, C#, TypeScript/JavaScript, SQL/Postgres, AWS).
• Lead on technical delivery of new features and greenfield development across our platforms.
• Engage in Agile planning, estimation, and design discussions to shape solutions and deliver to agreed timeframes.
• Contribute to code reviews and promote engineering excellence, performance, security, and reliability.
• Troubleshoot, investigate, and resolve complex technical issues across our systems.
• Support out-of-hours deployments during scheduled release cycles.
• Mentor junior developers-coaching, pairing, and fostering a growth mindset across the team.
• Take part in YAK Days every 5th week - dedicated time to fix those "cookie jar" bugs, explore innovations like AI or automation, and prototype new ideas that will benefit the team and business.

About you

• A well-rounded full-stack developer with strong experience across modern web technologies.
• Proficient in:
  • .NET / C# and Web API
  • SQL & PostgreSQL
  • TypeScript/JavaScript and frameworks (e.g., NestJS, React, Angular)
  • AWS and cloud-based development environments
• Familiar with Agile practices and modern DevOps principles.
• Able to work across modern and legacy codebases (including VB.NET) with a continuous improvement mindset.
• Strong problem-solving capability with an eye for code quality, performance, and reusability.
• A great communicator and collaborator-able to influence, challenge positively, and work effectively with non-technical stakeholders.
• Passionate about personal and team growth; curious, proactive, and always looking ahead to what's next.

Desirable:

• Experience with automated testing, CI/CD, and modern deployment pipelines.
• Exposure to mentoring or leading in a technical capacity.

What we offer

• Competitive salary + full benefits
• Hybrid/home working with flexibility
• 25 days holiday (increasing with service), private health, pension, life assurance
• Flexible benefits scheme covering financial, wellness, legal, and medical support
• Rewards platform with a wide range of options
• YAK Days - protected innovation time every 5th week
• A clear engineering development pathway: choose a people-leadership or technical-expert route, including progression up to Staff Engineer
• Opportunity to work on greenfield projects and modern tech, without industry-specific experience required

At tmGroup, we're doing things differently-and we're looking for people who want to be part of that journey.

If you're a Senior Developer who thrives in a collaborative, curious, continuous-learning environment, we'd love to hear from you - apply today.