Software Developer Backend jobs in Cardiff

ITOL Recruit

Trainee Coding Programme – No Experience Needed Future-proof your career in Coding – starting today. Looking for a career change? Maybe you’re already working but want a more technical role with better long-term prospects. Or you could be between jobs and ready for a fresh start in tech. The ITOL Re

Ofgem

Successful candidates may be based in any of our office locations – Cardiff, Glasgow or London. We especially welcome applicants from Cardiff and Glasgow. Job SummaryOfgem is working at the forefront of the fight to modernise and strengthen the UK's energy systems, driving digital innovation that wi

About the Project Outlier helps the world’s most innovative companies improve their AI agents by providing human feedback. Do you want to shape the future of autonomous agents like OpenClaw? We collaborate with leading AI organizations to train Large Language Models (LLMs) to function as proactive,

Hays Technology

Hays are now looking for an SC Cleared Software Developer for one of our local clients: £600 p/d Inside IR35 1-2 Days onsite, rest is WFH Location is Cardiff Must hold current SC Clearance You'll join an Agile delivery team, building and supporting secure, high-quality software services used by inte

ProAmpac

ProAmpac is seeking a UK based, talented, and flexible full stack developer to join our progressive and collaborative team. In this role, you will maintain and enhance a wide range of internal business systems, including internet/intranet applications and Azure based solutions. Our technology stack

About Esenda Esenda powers over £1.5bn of inbound and outbound payments annually, in the education space - from tuition and catering fees to supplier payments and payroll. We’re a revenue-generating startup with strong product-market fit, and we’re growing fast. Join us now and you’ll work on impact

ITOL Recruit

Job Description Trainee Coding Programme – No Experience Needed Future-proof your career in Coding – starting today. Maybe you’re already working but want a more technical role with better long-term prospects. Or you could be between jobs and ready for a fresh start in tech. The ITOL Recruit Coding

Ofgem

Ofgem is seeking a Junior Software Developer to enhance and maintain digital services at our Cardiff office. This permanent role involves working with technologies like C#, ASP.NET, and SQL Server in a fast-paced environment. Responsibilities include code writing, debugging, and supporting applicati

IT Online Learning

Trainee Software Developer £27,000£65,000 Job Programme This is a self-funded programme that leads to employment, fees apply. Job Guarantee Complete the programme and get a job, or get your course fees back. Location: UK Wide (Remote Opportunities Available) Looking to start a career in Software Dev

CPS Group (UK) Limited

CPS Group (UK) Limited is seeking a Software Engineer (Java) to join their collaborative team in Cardiff. The role focuses on designing and maintaining backend applications while contributing to full-stack development in an agile environment. Key skills include strong Java experience, familiarity wi

Graduate Software Developer - Remote, Train in C#, SQL, PHP, Azure £25,000 + Bonus | Full Training MUST HAVE (read before applying): Already graduated (no 2026 students) First-Class Computer Science degree (Top 40 UK university) Full UK working rights No visa sponsorship / no Student or Graduate (PS

Ascendion

About the Role: We are hiring a Java Backend Developer to join a leading banking client in the UK. The role involves building and modernizing scalable backend systems, working on microservices architecture, and contributing to high-performance, secure financial applications. Key Responsibilities: De

Sherborne Talent Solutions

I am currently recruiting for multiple skilled Backend Developer's to join a growing and dynamic development team for my highly successful international client. These roles have come about due to continuous growth and expansion within a key area for my client, offering excellent opportunities to exp

Relevance Lab

Senior Software Developer Location: Newcastle Upon Tyne, England, United Kingdom Hybrid, 2 days onsite 1 yr. contract The tech stack spans Node.js and React-style front ends with Spring Boot microservices, cloud deployment on AWS (and some Azure exposure) supported by Git-based CI/CD (GitLab and too

Turing

About Us: Based in San Francisco, California, Turing is the world’s leading research accelerator for frontier AI labs and a trusted partner for global enterprises deploying advanced AI systems. Turing supports customers in two ways: first, by accelerating frontier research with high-quality data, ad

Python Software Engineer (Mid to Senior) – Backend Focus Remote (Ireland / Northern Ireland) | 1 day per month on site Company Overview A technology-driven digital business operating a large-scale consumer platform with significant daily user activity. This is a small IT function within a broader or

IO Associates

Title: Senior Backend Engineer (Node, TypeScript, AWS) Salary: Up to £80,000 plus bonus Location: Fully Remote (UK) Are you a Senior Backend Developer who wants to own features end-to-end and build products used at scale? We're working with a fast-growing, product-led tech business looking for a Nod

TALENT INTERNATIONAL UK LTD

Job Description: Senior Business Central Developer Looking for your next big challenge in Business Central? We've got a brand-new senior developer role up for grabs! You'll be leading development on key projects and BAU enhancements, working closely with a tight-knit team of senior developers, and h

ITOL Recruit

£28,000 - £35,000 /year

Are you looking to benefit from a new career in Software Development? Skills shortages in the IT sector is driving the need for qualified, entry-level career seekers and career changers. We help place graduates from this programme in top UK companies and organisations needing to employ entry-level s

Sourced

Role: Software Engineer III - OpenXR Developer Location: Remote Employment Type: Full-time Compensation: Competitive salary commensurate with experience, qualifications, and location. Indicative range: $130,000 – $200,000 (USD equivalent), plus benefits. Role Overview We are hiring a Software Engine