Principal .NET Developer
Role details
Job location
Tech stack
Job description
I'm working with an award-winning, industry-leading PropTech company that's building pioneering technology for smart building management and digital tenant experiences. They're a fast-growing scale-up now looking for a Principal Engineer (C# .NET) to help shape their engineering direction and drive technical excellence across their core platform.
You'll lead the development of their Bookable Services systems - the technology behind meeting room, desk, parking, and amenities bookings for major commercial real estate clients. It's a hands-on, influential role where you'll work closely with the CTO and product leadership team to set the roadmap and mentor developers.
What you'll be doing
- Design, build, and maintain booking and analytics systems used by high-profile clients
- Champion engineering best practices, performance, and reliability
- Drive technical improvements and manage tech debt across systems
- Collaborate with other technical leads and senior stakeholders to align on architecture and delivery
- Mentor developers and foster a high-performing, collaborative team culture
Requirements
- Strong experience delivering complex solutions with C# .NET, SQL, and MongoDB (or similar)
- Strong understanding of software and system design patterns
- Experience working with cloud-native (AWS) distributed systems
- TDD/BDD approach with a passion for clean, maintainable code
- Excellent communication skills and ability to influence technical direction
- Bonus: experience with React and TypeScript, or large-scale booking systems
Benefits & conditions
- Salary: Up to £95,000 depending on experience (maybe scope for more)
- Location: Remote or hybrid, with occasional travel to London (Aldgate)
- Contract: Permanent, full-time
- Benefits: Private medical insurance, training and development budget, employee rewards and discounts, and the opportunity to help shape team culture and technical direction
If you're a seasoned engineer who enjoys technical ownership, mentoring others, and helping build smarter, more connected workspaces, this could be a great fit.
