Senior Software Developer
Where this role is available
Collapsed by default to keep the job description easy to scan.
- Saint Mellons, United Kingdom
- United Kingdom
- Cardiff, United Kingdom
Salary context for this role
JobGrid.eu combines visible employer pay, official public benchmarks, and current JobGrid listings for Back End Engineer.
Listed salary
GBP 55,000 - 65,000 / yearlySalary published on this job listing.
- Source
- Extracted from this visible public job listing
Role summary by JobGrid
Senior Software Developer at Advanced Secure Technologies: Saint Mellons, United Kingdom, United Kingdom, Cardiff, United Kingdom; On-site; Full time; IT; Back End Engineer. JobGrid adds normalized role facts, source context, and a path to the employer application page so candidates can compare the listing before applying.
- Location and workplace: Saint Mellons, United Kingdom, United Kingdom, Cardiff, United Kingdom, On-site
- Role classification: IT, Back End Engineer, Full time
- Employer salary shown on the listing: GBP 55,000 - 65,000 / yearly
- Source freshness: checked by JobGrid on 2026-05-29.
Senior Software Developer
Location: Cardiff (Office-based, 5 days a week)
Salary: £55,000 - £65,000 base (DOE) + up to £3,000 annual bonus
Start Date: Immediate start available, but willing to wait for the right candidate.
Are you an accomplished senior software developer with a proven track record in .NET?
Join us at an exciting time in our journey, where you’ll help shape the future of our products as we modernise our enterprise applications with latest .NET technologies and event-driven SaaS microservice architecture to deliver enterprise-scale solutions.
At Advanced Secure Technologies, we’re a fast-growing, innovative company on a mission to protect organisations from document fraud through cutting-edge security solutions. Based on site in St Mellons, Cardiff, we’re expanding and need another skilled senior developer to help us scale.
What you’ll do:
- Play a key role in the design and delivery of new features and platform improvements using .NET 10 and other modern technologies, contributing as a senior individual contributor within one of our collaborative engineering teams.
- Share ideas, solve complex technical problems, and help shape the future technical direction, architecture and engineering standards of our products.
- Take ownership of team sprint delivery, facilitating sprint activities, coordinating priorities, resolving blockers and helping ensure releases and wider project deliverables remain on track and delivered successfully.
- Support and mentor other developers through technical guidance, collaboration, code reviews and sharing best practice, while also supporting their career development and contributing to a collaborative, high-performing engineering culture.