.net software engineer jobs in Cardiff

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...

You will tackle technical challenges that bridge software engineering with real-world manufacturing processes. This role blends hands-on technical expertise with leadership responsibilities, offering both team mentorship and active involvement in architecture, design, process improvement, and code review.

About the Job This position is for a Senior Software Engineer with a minimum of 5 years of experience in backend development and a passion for building robust, scalable systems. We are looking for an engineer with a strong background in the C# .NET ecosystem, and a preference for candidates with significant experience on AWS. Are you ready for a challenge? We’re looking for a dynamic software...

You will work as part of a collaborative R&D team focused on delivering high-quality features, and developing the services architecture. This role is ideal for an engineer who thrives in complex systems and is looking to develop new services that exploit a cloud-native ecosystem while modernizing legacy services into a containerized, cloud-native ecosystem.

Software Engineer Tech Stack: C# / .NET / Git / Azure Location: Fully Remote (no office travel required) Salary: £55,000 – £65,000 + Benefits This is an excellent opportunity to join a small but growing insurance software company, as they look to expand their development team. You’ll work across a variety of initiatives, including their core product development, system migrations, and...

You will be working closely with the Machine Learning team; however, you are not required or expected to have background in Machine Learning. This is an applied role, and we are looking to hire a software engineer with experience in cloud computing and distributed systems. In this role, you will:

About The Role Deadline for applications: 11:59pm on 31st October 2025 Applying for this role is straight forward Scroll down and click on Apply to be considered for this position. Were looking for a Principal Software Engineer to shape the technical direction of high-profile projects and lead the delivery of modern, scalable software. xujxxms We use technology to create impactful,...

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...

Senior Front-End Developer Location: Edinburgh (Remote-first, with occasional office visits) Salary: £50,000 – £60,000 per year + competitive benefits About the Role We’re looking for a Senior Front-End Developer to join our engineering team and help build an advanced resource planning tool. You’ll focus on creating scalable, high-performing, and user-friendly interfaces that deliver an...

Software Engineer Document Management & Workflow Systems Please ensure you read the below overview and requirements for this employment opportunity completely. Details: - Initial6-month contract - Fully remote, EU working hours - Start end of Feb / early March Were looking for an experienced Software Engineer (Contractor) to support a regulated banking client on their Document Management &...

You will design and build APIs that enable products, partners and AI services to work together, including: Building RESTful APIs using C# .

You will likely bring: Strong experience building backend services in C# .

You will collaborate closely with cross-f...

Role: Software Engineer (.NET / C#) Working hours: 10am-6pm (aligned to US team) Fully Remote (UK-based) Salary: £50,000 - £60,000 p/annum CPS Group are partnering with a Data Consultancy to hire a Software Engineer to support their expanding US-facing development team. This role sits within a highly collaborative engineering function and reports directly into the Director of Development, who...

You will play a pivotal role in enhancing sustainability efforts within the Built Environment, coordinating across various disciplines and supporting high-profile projects.

Senior Software Engineer (Robotics) 🤖 London (On-site, 5 days/week) Permanent role with excellent on-site benefits We’re looking for a Senior Software Engineer to help turn our advanced robotics stack into a dependable, real-world product. This is a hands-on role where you’ll write production code, integrate subsystems, and work directly with robots in both simulation and hardware environments...

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,...

Job title: C++ 20/23 Software Engineer Client: Elite FinTech Firm Salary: Up to £150k + Bonus Location: London (Hybrid Working) Sells: Cutting-edge tech, ownership of multiple greenfield projects, no red tape, gold medal Olympiads, exceptional technologists, option to research and develop your own models, a friendly/collaborative environment, beautiful offices. An Elite Tech Firm is looking...

You will work on complex software projects, contributing to the architecture, development, and improvement of software systems. This role involves mentoring junior engineers, collaborating with cross-functional teams, and driving the adoption of best practices in software development.

You will work as part of a collaborative R&D team focused on delivering high-quality features, and developing the client architecture using the latest UI patterns.