At a Glance
- Tasks: Design and deliver new features using .NET technologies in a collaborative team.
- Company: Join Advanced Secure Technologies, a fast-growing company focused on document fraud protection.
- Benefits: Enjoy a competitive salary, 25 days holiday, training budgets, and a fun office culture.
- Other info: Dynamic office environment with excellent career growth opportunities and flexible working options.
- Why this job: Make a real impact by shaping the future of enterprise applications with cutting-edge tech.
- Qualifications: 7+ years in C# .NET development and experience mentoring other developers.
The predicted salary is between 55000 - 65000 £ per year.
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.
Requirements
- Proven experience operating successfully at senior developer/engineer level within commercial software teams, making strong hands‑on technical contributions as a senior individual contributor.
- 7+ years commercial experience delivering modern C# .NET solutions.
- Strong commitment to engineering best practices, including writing clean, maintainable and testable code, with experience applying unit and integration testing standards within modern development teams.
- Experience of Clean Architecture or similar modern approaches, such as hexagonal or onion architecture, beyond traditional N‑tier designs.
- Strong problem‑solving skills, attention to detail, excellent organisation and clear communication skills, with the ability to collaborate effectively across diverse engineering teams and the wider business.
- Experience mentoring, guiding and supporting other developers, helping them grow through collaboration, technical guidance and knowledge sharing.
Bonus Points For
- Working with enterprise‑scale software, microservices, event‑driven architecture or SaaS product development.
- Experience with TDD, DDD, secure coding/OWASP practices, Azure DevOps, CI/CD pipelines and cloud platforms like Azure.
- Experience with some of the tech we use: .NET Blazor, EF Core, SQL, Redis, Elasticsearch, RabbitMQ, Docker, Kubernetes or Blockchain.
- Experience using AI tools to improve developer effectiveness, team productivity and the quality or speed of software delivery.
Benefits
- Competitive salary £55,000 - £65,000 (DOE) + monthly performance bonus.
- A clear career pathway through our Senior Developer grades and beyond with mentoring and skill development support.
- 25 days holiday + Bank Holidays.
- Training and development time, plus training budgets for courses/exams.
- Free gym, secure parking, free eyecare and a fully stocked kitchen.
- Access to PerkBox significant retailer discounts.
- Free Private online GP.
- Employee Assistance Programme including specialist clinical support.
- Company car and cycle‑to‑work schemes.
- A fun, supportive culture with birthday treats and epic office events.
Interview Process
- Introductory call (45 min): A chance for us to get to know you, and for you to get to know us. We’ll cover your experience, a few competency‑based questions, and some light technical discussion.
- Technical assessment (90 min): Technical questions and discussion around your approach and problem‑solving, includes a 30‑minute practical coding exercise focused on real‑world problem solving.
- Final conversation (20 min): Meet our Managing Director for an informal chat about the role, the team, your potential impact, and the growth opportunity available to you.
Location and hours
- Onsite, Eastern Business Park, St Mellons, Cardiff, Wales.
- Min Hours 37.5 hrs per week, 8.30 am to 5 pm Monday to Friday, with up to one hour for lunch.
On Site Working
We’re an office‑based team because our culture thrives on collaboration and hands‑on support, especially as we grow quickly and onboard new team members. While we don’t offer fully remote or fixed hybrid work, we’re flexible when life happens – ad hoc home working is always an option.
Diversity & Inclusion
Advanced Secure Technologies is an equal opportunity employer, proud of our ongoing efforts to foster diversity and inclusion. We welcome applicants from all backgrounds and process your personal data in accordance with our Privacy Notice.
Contact Details:
Advanced Secure Technologies | B Corp™ Recruitment Team
StudySmarter Expert Advice🤫
We think this is how you could land Senior Software Developer in Dinas Powys
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✨Tap into Online Developer Communities
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We think you need these skills to ace Senior Software Developer in Dinas Powys
Some tips for your application 🫡
Show off your coding skills:When applying for a software engineering role, it's super important to showcase your coding skills. Make sure your CV includes your tech stack, any relevant programming languages you’re comfortable with, and examples of projects you've worked on. If you have a GitHub profile, link it up! We love to see code in action.
Tailor your portfolio:For a full-time role, we’d expect to see some solid examples of your work in your portfolio. Make sure to include at least two or three projects that highlight your problem-solving skills and your ability to work with different technologies. Focus on the projects that are most relevant to the position at Advanced Secure Technologies | B Corp™.
Craft a killer cover letter:Your cover letter is your chance to stand out—make it personal! Explain why you want to work at Advanced Secure Technologies | B Corp™ and how your skills align with the role. Show us your passion for software development. We dig enthusiastic candidates who understand the value of collaboration and continuous learning!
Be clear and concise:When it comes to writing your CV and cover letter, clarity is key. Avoid jargon that could confuse us and stick to simple, direct language. Highlight your achievements with quantifiable results where possible, and keep everything easy to read. A well-organised application goes a long way!
How to prepare for a job interview at Advanced Secure Technologies | B Corp™
✨Brush Up on Your Coding Skills
For a full-time software engineering role, it's crucial that we stay sharp with our coding abilities. Expect technical questions that might involve solving problems on the spot or discussing algorithms. Practise on platforms like LeetCode or HackerRank to get comfortable with the types of questions that often come up.
✨Know Your Tools and Frameworks
Make sure we’re well-acquainted with the tools and technologies listed in the job description. Familiarise ourselves with any specific frameworks or programming languages mentioned. If Advanced Secure Technologies | B Corp™ uses React or Node.js, for instance, be ready to discuss how we’ve used them in previous projects or coursework.
✨Showcase Your Projects
Bring along a portfolio that highlights our best work. This could be code samples, GitHub repositories, or any side projects we’ve built. Make sure we can talk through our thought process for each project, especially the challenges we faced and how we solved them—this shows our problem-solving skills in action.
✨Prepare for Behavioural Questions
While technical skills are key, full-time positions also require cultural fit. Be ready to discuss our previous experiences and how we handle teamwork, conflict, and deadlines. Brush up on the STAR method—Situation, Task, Action, Result—to clearly articulate our past experiences when discussing how we've contributed to a team.
