Senior .net Developer jobs in Wales

C# Developer / Full Stack Engineer (.Net Core JavaScript) St Albans / WFH to £100k Do you have expertise with C# .Net backend development combined with JavaScript skills? You could be progressing your career in a senior hands-on role at a technology driven trading company that invest in Sports betting markets with a flat structure where you will get your voice heard and can make a real impact...

Job SummaryAviation. It connects our world, brings people together, provides opportunities, accelerates economic growth, and is just so very cool! Come work for NAVBLUE, a leading services company owned by Airbus, dedicated to Flight Operations, Air Traffic Management solutions and services for airlines, airports, and Air Navigation Service Providers. We combine aircraft manufacturer expertise,...

You will join a cross-functional product engineering team working on the evolution and modernisation of a core SaaS platform. The focus is on building scalable, cloud-native services while improving reliability, performance, and long-term maintainability.

You will play an integral role in supporting the decarbonisation of the regions system in a way that brings in investment, creates jobs and sustainable growth. The role will also have the opportunity to collaborate with a wide range of stakeholders in the sector, including local authorities, government, the private sector and our universities and colleges.

As a Full Stack Engineer with expertise in .NET and Vue, you'll take on a hands-on role in building web applications while working vertically in both the frontend and the backend. Your responsibilities will involve designing, developing, and fine-tuning web applications, using .NET 6+, MediaTR, EF.Core and VueJS 2/3 to create engaging and user-friendly interfaces. You'll work closely with the...

Job Description Pleasenote:Applicants should review all aspects of this advert to ensure a thorough understanding. If reviewing via a screen reader, please note that the Job summary, Job description, Person specification, Benefits and Things you need to know sections have been emphasised Senior Dynamics Developer The IPO is a modern organisation which depends on its IT services to operate and...

A global engineering firm in Cardiff is seeking an experienced Sustainability Consultant to lead sustainable building solutions for high-profile projects. The role involves coordinating sustainability delivery across teams, developing project approaches, and enhancing client relationships to meet sustainability goals. Ideal candidates will possess a degree in a related field and experience in...

🚀 About Webigence and Spark Travel Webigence has 25 years of experience crafting UX‑first, often highly complex software. Our engineers pair forward‑thinking agile practices with an obsession for intuitive design, shipping products that feel effortless even when the logic underneath is anything but. Alongside a handful of long‑standing third‑party clients, we’re scaling our own SaaS...

Location: Bristol In House/Hybrid (must be within commutable distance of Bristol) Employment Type: Full-time Experience Level: Senior Salary: £60k - £80k About the Role We are seeking a highly skilled Senior Backend Web Developer with expertise across multiple backend technologies such as Python, .NET, and PHP to join our growing development team working on our AI communications platform. In...

Job Description Dynamics Developer - up to £59,000 - Hybrid (Flexible working - Newport Based) This role requires SC Clearance, so only candidates who have been in the UK for longer than 5 years and have full right to work in the UK will be considered. The Opportunity Yolk Recruitment Public Sector & Not-for-Profit team has partnered with an interesting civil service organisation who...

Department: Support Reports To: Application Software Support Manager Location: Remote Salary: £55k - £60k /yr (depending on experience) Contract Type: Permanent – Full Time Role Summary We're looking for an experienced full-stack .NET developer to join our team in a new and exciting role. This role will initially be supporting an array of clients, helping our support team to continue to...

You will be working on true innovation in an ethical industry - if that sounds of interest to you then please apply, or reach out to for more information. Senior Full Stack Developer | Oracle PL/SQL | ColdFusion | Digital Transformation | 1 day every 2 week into Cardiff | £50,000-£55,000 + benefitsRSG Plc is acting as an Employment Agency in relation to this vacancy.

C# Developer / Full Stack Engineer (.Net Core JavaScript) St Albans / WFH to £100k Do you have expertise with C# .Net backend development combined with JavaScript skills? You could be progressing your career in a senior hands-on role at a technology driven trading company that invest in Sports betting markets with a flat structure where you will get your voice heard and can make a real impact...

🚀 About Webigence and Spark Travel Webigence has 25 years of experience crafting UX‑first, often highly complex software. Our engineers pair forward‑thinking agile practices with an obsession for intuitive design, shipping products that feel effortless even when the logic underneath is anything but. Alongside a handful of long‑standing third‑party clients, we’re scaling our own SaaS...

You will join a cross-functional product engineering team working on the evolution and modernisation of a core SaaS platform. The focus is on building scalable, cloud-native services while improving reliability, performance, and long-term maintainability.

As a Full Stack Engineer with expertise in .NET and Vue, you'll take on a hands-on role in building web applications while working vertically in both the frontend and the backend. Your responsibilities will involve designing, developing, and fine-tuning web applications, using .NET 6+, MediaTR, EF.Core and VueJS 2/3 to create engaging and user-friendly interfaces. You'll work closely with the...

Job Description Pleasenote:Applicants should review all aspects of this advert to ensure a thorough understanding. If reviewing via a screen reader, please note that the Job summary, Job description, Person specification, Benefits and Things you need to know sections have been emphasised Senior Dynamics Developer The IPO is a modern organisation which depends on its IT services to operate and...

A leading engineering firm in the United Kingdom is seeking an Associate/Technical Director Sustainability Consultant to lead sustainable building initiatives. The role requires individuals to develop sustainable strategies, manage projects, and engage with clients across diverse sectors. Applicants should have a relevant degree, experience in sustainability assessments, and strong communication...

Department: Support Reports To: Application Software Support Manager Location: Remote Salary: £55k - £60k /yr (depending on experience) Contract Type: Permanent – Full Time Role Summary We're looking for an experienced full-stack .NET developer to join our team in a new and exciting role. This role will initially be supporting an array of clients, helping our support team to continue to...

Job Description Dynamics Developer - up to £59,000 - Hybrid (Flexible working - Newport Based) This role requires SC Clearance, so only candidates who have been in the UK for longer than 5 years and have full right to work in the UK will be considered. The Opportunity Yolk Recruitment Public Sector & Not-for-Profit team has partnered with an interesting civil service organisation who...