Backend Developer Contract Jobs in Cardiff
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1,599 Contract jobs sorted by:
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1,599 Contract jobs
Software Engineer - .NET Core, C#, SQL
Posted Today by LA International Computer Consultants Lt...
Azure SQL: Should be able to write complex queries, T SQL, normalize SQL tablesNet Core WEB API, C#, Azure Functions, Az...
- Rate £300 per day
- Category Undetermined
- Work type Undetermined
- Location Coventry, Warwickshire, UK
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Sign UpSoftware Engineer - Kotlin & Coroutines, OUTSIDE IR35, REMOTE
Posted Today by Gravitas Recruitment Group Ltd
Senior Software Engineer - Kotlin & Coroutines. £500/day LTD CO OUTSIDE IR35. 100% REMOTE. An interest in AI (Agenti...
- Rate £500 per day
- Category Outside
- Work type Remote
- Location London, UK
Java Developer (Trade Clearing) - Contract Opportunity! (London)
Posted Today by Revolution Technology Ltd
Our client, a global consultancy are looking for a Java Developer to join one of their banking projects. This will be a...
- Rate £650 per day
- Category Inside
- Work type Hybrid
- Location London, UK
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About Our Backend Developer Contract Roles in Cardiff
What does a backend developer contractor do?
Backend Developer contractors are engaged to build, maintain, and improve the server-side logic, databases, and APIs that power web applications and digital services. The work typically involves developing RESTful or GraphQL APIs, designing and optimising database schemas, building integrations between systems, implementing business logic, and ensuring that applications perform reliably at scale. Backend Developer contractors are used across virtually every sector, from fintech startups building new payment platforms to large enterprises modernising legacy systems, and are engaged when a team needs additional development capacity or specialist server-side expertise for a defined project.
The technical skills expected vary depending on the technology stack in use. The most common languages in the UK backend contracting market are Python, Java, .NET, Node.js, and PHP, with Go and Rust growing in demand for high-performance systems. Proficiency in SQL and experience with relational databases such as PostgreSQL or SQL Server is expected across most roles, alongside familiarity with NoSQL databases such as MongoDB or Redis depending on the application. Experience with cloud platforms, particularly AWS or Azure, is increasingly expected even for primarily backend-focused roles, as most modern applications are deployed in cloud environments. Strong knowledge of software engineering principles including testing, version control, and API design is assumed at all but the most junior levels.
What is the market like for backend developer contractors?
Backend Developer contracting is one of the largest and most well-established and active segments of the UK technology contracting market, driven by the ongoing demand for application development across every sector. The market is deep in terms of both volume and variety, spanning everything from short-term feature development engagements to multi-year platform modernisation programmes. Python and Java remain the dominant languages in terms of contract volume, though Node.js and Go are growing. The market has remained broadly stable in terms of rates, with backend specialists who combine strong language skills with cloud platform experience consistently able to command rates at the upper end of the developer contracting market.
What is the contracting market like in Cardiff?
Devolved government makes Cardiff the administrative centre of Wales and a consistent source of programme management, policy, and digital delivery contracts. Insurance and financial services employers, several of whom have established significant operational centres in the city, provide a steady flow of IT, data, and change roles. An emerging technology sector around the city centre and Cardiff Gate business park has added software development and cloud engineering to the local mix, though volumes remain modest compared to larger English cities. The Welsh Government's investment in digital capability is a distinctive feature of the Cardiff market, creating opportunities in govtech and public service transformation that are structured and funded differently from equivalent programmes in England.
How much do backend developer contractors usually earn in Cardiff?
Contract rates for backend developer roles in Cardiff typically range from £450 to £765 per day, depending on the scope of the role, required expertise, and the delivery expectations of the engagement.
How many backend developer vacancies in Cardiff are there on Quality Contracts?
Over the past twelve months, we have tracked over 200 backend developer contract roles across the site, with Cardiff demonstrating consistent opportunities. Data reviewed up to June 2026.