Date posted
Commute time
Locations
Type of Company
Job types
Salaries
Locations
Locations
Popular searches nearby
Other popular locations
Salaries
Date posted
Type of Company
Job types
3 Contract API jobs in Gloucester + 10 miles
190 exact matches jobs are outside your preferred location
)
Are you an experienced Full Stack .Net (C#) Developer, with solid experience in API development, keen to take ownership of end-to-end development, contribute to product innovation, and grow in a tech-led, agile team that genuinely values your input?
Are you an experienced Full Stack .Net (C#) Developer, with solid experience in API development, keen to take ownership of end-to-end development, contribute to product innovation, and grow in a tech-led, agile team that genuinely values your input?
NEWFEATURED
)
Providing WAF focused SME support and advice on Web & API based attack methodologies, evasions and mitigation techniques. * Conduct detailed analyses and technical evaluations of various Web Application Firewall (WAF) solution rulesets and functionalities to confirm adherence to agreed baselines and to maximize detection of web, API, and other traffic-based security threats.
Providing WAF focused SME support and advice on Web & API based attack methodologies, evasions and mitigation techniques. * Conduct detailed analyses and technical evaluations of various Web Application Firewall (WAF) solution rulesets and functionalities to confirm adherence to agreed baselines and to maximize detection of web, API, and other traffic-based security threats.
PREMIUM
Are you an experienced .Net (C#) Developer, with some solid experience in API development, looking to take on your next Software Engineering role in a growing SaaS product company? Keen to grow your technical skills around .Net 8 / C# / API & MySQL development & look into new Generative AI / LLM dev' tools, too? Job title: .Net (C#) API Developer - But basically, if you have solid experience in .Net (C#) & solid experience in ASP.Net core WebAPI (RESTful API), then we'd like to hear from you! - ASP.NET Core MVC and Web API. - Understanding of API versioning, documentation (e.g., Swagger), and security best practices.
Are you an experienced .Net (C#) Developer, with some solid experience in API development, looking to take on your next Software Engineering role in a growing SaaS product company? Keen to grow your technical skills around .Net 8 / C# / API & MySQL development & look into new Generative AI / LLM dev' tools, too? Job title: .Net (C#) API Developer - But basically, if you have solid experience in .Net (C#) & solid experience in ASP.Net core WebAPI (RESTful API), then we'd like to hear from you! - ASP.NET Core MVC and Web API. - Understanding of API versioning, documentation (e.g., Swagger), and security best practices.
NEWFEATURED
)
Design and implement API integrations to integrate data
Design and implement API integrations to integrate data
)
Software API Developer - Hybrid - Salary £50k (DOE) * Experienced with ASP.NET Core MVC and Web API * Understanding of API versioning documentation (e.g. Swagger)
Software API Developer - Hybrid - Salary £50k (DOE) * Experienced with ASP.NET Core MVC and Web API * Understanding of API versioning documentation (e.g. Swagger)
FEATURED
)
£95,000 GBP - Hybrid WORKING - Location: Cardiff, Bristol, Birmingham, West Midlands - United Kingdom Type: Permanent - Overview - Our client is seeking an experienced Senior Data Scientist to join their Defence business unit. In this role, you will lead project teams delivering bespoke algorithms across the defence and national security sector. You'll be responsible for defining the data science approach, designing supporting software architectures, and ensuring best practices are applied throughout. This is a client-facing role with significant scope to shape technical direction, influence future projects, and strengthen stakeholder relationships. You will also play a key part in mentoring and developing other data scientists, while contributing to broader knowledge-sharing initiatives across the business. Key Responsibilities
£95,000 GBP - Hybrid WORKING - Location: Cardiff, Bristol, Birmingham, West Midlands - United Kingdom Type: Permanent - Overview - Our client is seeking an experienced Senior Data Scientist to join their Defence business unit. In this role, you will lead project teams delivering bespoke algorithms across the defence and national security sector. You'll be responsible for defining the data science approach, designing supporting software architectures, and ensuring best practices are applied throughout. This is a client-facing role with significant scope to shape technical direction, influence future projects, and strengthen stakeholder relationships. You will also play a key part in mentoring and developing other data scientists, while contributing to broader knowledge-sharing initiatives across the business. Key Responsibilities
PREMIUM
)
Senior Full Stack C# .Net Developer - Hybrid Remote
Senior Full Stack C# .Net Developer - Hybrid Remote
VERTECH GROUP (UK) LTD
OX4, Oxford
From £70,000 to £85,000 per annum + Bonus + Benefits
Senior Full Stack C# .Net Developer - Location:Home based / 1 day per month in Oxford - Salary:Circa 70K 85K DOE + Benefits - Senior Full Stack C# .Net Developerrequired by a well-established and fast-growing Top Tech company! This is a varied, challenging role building mission-critical, user-facing applications used at scale. Youll be developing new features, contribute to key technical decisions, and helping to shape the quality of code across the team * At least 5yrs development experience * Experience with high-traffic, responsive apps and sites * Expertise in C# .Net Core * RESTful APIs * TypeScript &JavaScript * Frameworks: Angular, Vue, or React * HTML5 and CSS3 * Familiarity with CI/CD tools * Version control: Git or similar * SQL Server & MySQL - Tremendous opportunity offering plenty of scope for career progression in a friendly, innovative environment where
Senior Full Stack C# .Net Developer - Location:Home based / 1 day per month in Oxford - Salary:Circa 70K 85K DOE + Benefits - Senior Full Stack C# .Net Developerrequired by a well-established and fast-growing Top Tech company! This is a varied, challenging role building mission-critical, user-facing applications used at scale. Youll be developing new features, contribute to key technical decisions, and helping to shape the quality of code across the team * At least 5yrs development experience * Experience with high-traffic, responsive apps and sites * Expertise in C# .Net Core * RESTful APIs * TypeScript &JavaScript * Frameworks: Angular, Vue, or React * HTML5 and CSS3 * Familiarity with CI/CD tools * Version control: Git or similar * SQL Server & MySQL - Tremendous opportunity offering plenty of scope for career progression in a friendly, innovative environment where
FEATURED
)
Experience with data migration, ETL processes, and API integrations.
Experience with data migration, ETL processes, and API integrations.
NEWFEATURED
)
Technical experience in areas suchas Azure, .NET frameworks, API integrations, MS SQL Server and SSRS.
Technical experience in areas suchas Azure, .NET frameworks, API integrations, MS SQL Server and SSRS.
NEWFEATURED
Role Title: Senior QA Lead - Duration: contract to run until 31/03/2026 - Location: Bristol, hybrid 1 day per month onsite - Rate: up to £570 p/d Umbrella inside IR35 - Clearance required: Sole UK National (No Dual Nationalities) with Active SC Clearance - Role purpose / summary - This is an opportunity to join the team as a senior QA. We experiment with AI to improve platform availably and drive productivity benefits across the Client. Project Background - The incumbent tool used by the client predicts the availability of assets depending on the parameters inputted. The team has undergone a discovery piece of work to assess the effectiveness of the tool and to design what a new tool could look like. We determined that the entire application will need to be rebuilt which will include rebuilding the application infrastructure, the simulation model and the UI.
Role Title: Senior QA Lead - Duration: contract to run until 31/03/2026 - Location: Bristol, hybrid 1 day per month onsite - Rate: up to £570 p/d Umbrella inside IR35 - Clearance required: Sole UK National (No Dual Nationalities) with Active SC Clearance - Role purpose / summary - This is an opportunity to join the team as a senior QA. We experiment with AI to improve platform availably and drive productivity benefits across the Client. Project Background - The incumbent tool used by the client predicts the availability of assets depending on the parameters inputted. The team has undergone a discovery piece of work to assess the effectiveness of the tool and to design what a new tool could look like. We determined that the entire application will need to be rebuilt which will include rebuilding the application infrastructure, the simulation model and the UI.
PREMIUM
Role Title: Senior QA Lead - Duration: contract to run until 31/03/2026 - Location: Bristol, hybrid 1 day per month onsite - Rate: up to £552 p/d Umbrella inside IR35 - Clearance required: Sole UK National (No Dual Nationalities) with Active SC Clearance - Role purpose / summary - This is an opportunity to join the team as a senior QA. We experiment with AI to improve platform availably and drive productivity benefits across the Client. Project Background - The incumbent tool used by the client predicts the availability of assets depending on the parameters inputted. The team has undergone a discovery piece of work to assess the effectiveness of the tool and to design what a new tool could look like. We determined that the entire application will need to be rebuilt which will include rebuilding the application infrastructure, the simulation model and the UI.
Role Title: Senior QA Lead - Duration: contract to run until 31/03/2026 - Location: Bristol, hybrid 1 day per month onsite - Rate: up to £552 p/d Umbrella inside IR35 - Clearance required: Sole UK National (No Dual Nationalities) with Active SC Clearance - Role purpose / summary - This is an opportunity to join the team as a senior QA. We experiment with AI to improve platform availably and drive productivity benefits across the Client. Project Background - The incumbent tool used by the client predicts the availability of assets depending on the parameters inputted. The team has undergone a discovery piece of work to assess the effectiveness of the tool and to design what a new tool could look like. We determined that the entire application will need to be rebuilt which will include rebuilding the application infrastructure, the simulation model and the UI.
PREMIUM
We're currently working with a growing SaaS company based in Banbury that are looking for a Senior Software Engineer skilled with C# ASP.NET, Angular, and SQL. This role will naturally grow in to a Lead Engineer position as the team grows. You will be working to develop and build their new payroll project, which will be rolling out nationally, and then internationally. This role is based in Banbury, and it will require you to be onsite a minimum of two days per week. * Professional software engineering experience (typically 5+ years) using C# / ASP.NET (Core & Framework) and modern JavaScript/TypeScript frameworks, particularly Angular (v8+). * Significant understanding and practical experience with relational databases (MySQL /PostgreSQL preferred). * Expertise in version control systems (Git) and branching strategies (Gitflow).
We're currently working with a growing SaaS company based in Banbury that are looking for a Senior Software Engineer skilled with C# ASP.NET, Angular, and SQL. This role will naturally grow in to a Lead Engineer position as the team grows. You will be working to develop and build their new payroll project, which will be rolling out nationally, and then internationally. This role is based in Banbury, and it will require you to be onsite a minimum of two days per week. * Professional software engineering experience (typically 5+ years) using C# / ASP.NET (Core & Framework) and modern JavaScript/TypeScript frameworks, particularly Angular (v8+). * Significant understanding and practical experience with relational databases (MySQL /PostgreSQL preferred). * Expertise in version control systems (Git) and branching strategies (Gitflow).
FEATURED
Experience with integration, E2E and API testing
Experience with integration, E2E and API testing
PREMIUM
)
Full Stack .NET Developer - Azure - Cardiff
Full Stack .NET Developer - Azure - Cardiff
Circle Group
CF1, Cardiff
£40000 - £50000 per annum + + Benefits
You should also have some development experience in the Cloud with Azure & third-party API integrations
You should also have some development experience in the Cloud with Azure & third-party API integrations
NEW
)
Solution Architect CDE BIM
Solution Architect CDE BIM
Belcan Technical Recruiting (UK) Ltd
Heathcote, CV34 6DA
£400 - £500 per day
Are you a strategic thinker with a passion for designing scalable, secure, and innovative SaaS solutions? We're looking for a Solution Architect to lead the technical vision and delivery of cutting-edge platforms, including Common Data Environments (CDE), Building Information Modelling (BIM), and enterprise integrations. Belcan Workforce Solutions are hiring on a 6 month basis - Inside IR35 - Hybrid working 3 days on our clients site in Warwick. About the Role - As our Solution Architect, you'll play a pivotal role in shaping the future of our digital ecosystem. * Developing business cases to evaluate SaaS options (market-based or in-house) * Gathering and translating functional and non-functional requirements * Leading RFP evaluations and vendor selection * Designing scalable, secure, and maintainable architecture * Ensuring compliance with security and IT controls
Are you a strategic thinker with a passion for designing scalable, secure, and innovative SaaS solutions? We're looking for a Solution Architect to lead the technical vision and delivery of cutting-edge platforms, including Common Data Environments (CDE), Building Information Modelling (BIM), and enterprise integrations. Belcan Workforce Solutions are hiring on a 6 month basis - Inside IR35 - Hybrid working 3 days on our clients site in Warwick. About the Role - As our Solution Architect, you'll play a pivotal role in shaping the future of our digital ecosystem. * Developing business cases to evaluate SaaS options (market-based or in-house) * Gathering and translating functional and non-functional requirements * Leading RFP evaluations and vendor selection * Designing scalable, secure, and maintainable architecture * Ensuring compliance with security and IT controls
)
DevOps Engineer
DevOps Engineer
Newton Blue
CF1, Cardiff
Up to £60,000 per annum dependent on experience plus excellent benefit
Rest API's and/or WCF services, working with JSON and SOAP
Rest API's and/or WCF services, working with JSON and SOAP
DevOps Engineer
DevOps Engineer
Newton Blue
BS1, Bristol
Up to £60,000 per annum dependent on experience plus excellent benefit
Rest API's and/or WCF services, working with JSON and SOAP
Rest API's and/or WCF services, working with JSON and SOAP
Technical Services Consultant
Technical Services Consultant
Newton Blue
CF1, Cardiff
Up to £60,000 per annum dependent on experience plus excellent benefit
Rest API's and/or WCF services, working with JSON and SOAP
Rest API's and/or WCF services, working with JSON and SOAP
Technical Services Consultant
Technical Services Consultant
Newton Blue
BS1, Bristol
Up to £60,000 per annum dependent on experience plus excellent benefit
Rest API's and/or WCF services, working with JSON and SOAP
Rest API's and/or WCF services, working with JSON and SOAP
Front End Games Developer - Hybrid Remote
Front End Games Developer - Hybrid Remote
VERTECH GROUP (UK) LTD
OX4, Oxford
From £55,000 to £75,000 per annum + Bonus + Benefits
Front End Game Developer - Location:Home Based / 1 day per week in Oxford - Salary:Circa 55K 75K + Bonus + Benefits - Senior Front End Games Developerrequired by fast-growing, Top Tech Company! This is a diverse, challenging role in a talented team where youll be building cutting-edge casino slot games, driving feature development, shaping the architecture, and mentoring junior developers * At least 5yrs development experience * Games development experience * Mobile-first mindset * HTML5, TypeScript * PixiJS, Phaser or similar * WebGL or Canvas 2D APIs * Git or similar * Maths, statistics, or physics background * 3D development experience - Tremendous opportunity offering plenty of scope for career progression in a friendly, innovative environment where youll be able to bring ideas, keep up-to-date with the latest technologies and enjoy a healthy work/life balance!
Front End Game Developer - Location:Home Based / 1 day per week in Oxford - Salary:Circa 55K 75K + Bonus + Benefits - Senior Front End Games Developerrequired by fast-growing, Top Tech Company! This is a diverse, challenging role in a talented team where youll be building cutting-edge casino slot games, driving feature development, shaping the architecture, and mentoring junior developers * At least 5yrs development experience * Games development experience * Mobile-first mindset * HTML5, TypeScript * PixiJS, Phaser or similar * WebGL or Canvas 2D APIs * Git or similar * Maths, statistics, or physics background * 3D development experience - Tremendous opportunity offering plenty of scope for career progression in a friendly, innovative environment where youll be able to bring ideas, keep up-to-date with the latest technologies and enjoy a healthy work/life balance!
FEATURED
)
Solution Architect - Hybrid (Travel to Warwick 1-2 days per month) £700 Outside - 6 months - We are seeking a skilled Solution Architect to join our team. In this role, you will be responsible for creating comprehensive business cases to identify and select the most suitable SaaS applications, either from existing market options or through in-house development. Your expertise will be crucial in gathering and analysing requirements, designing architectural solutions, evaluating proposals through Request for Proposals (RFP), and ensuring that Non-Functional Requirements (NFR) are met. You will address security and IT controls while creating architectural artefacts, leading the technical aspects of SaaS deployment across multiple domains, and integrating Identity Provider (IdP) Single Sign-On (SSO) solutions.
Solution Architect - Hybrid (Travel to Warwick 1-2 days per month) £700 Outside - 6 months - We are seeking a skilled Solution Architect to join our team. In this role, you will be responsible for creating comprehensive business cases to identify and select the most suitable SaaS applications, either from existing market options or through in-house development. Your expertise will be crucial in gathering and analysing requirements, designing architectural solutions, evaluating proposals through Request for Proposals (RFP), and ensuring that Non-Functional Requirements (NFR) are met. You will address security and IT controls while creating architectural artefacts, leading the technical aspects of SaaS deployment across multiple domains, and integrating Identity Provider (IdP) Single Sign-On (SSO) solutions.
Full Stack .NET Developer - Azure - Cardiff
Full Stack .NET Developer - Azure - Cardiff
Circle Group
CF1, Cardiff
£40000 - £50000 per annum + + Benefits
You should also have some development experience in the Cloud with Azure & third-party API integrations
You should also have some development experience in the Cloud with Azure & third-party API integrations
NEW
)
Understanding of data architecture and API design.
Understanding of data architecture and API design.
NEW
)
An understanding of API design and the creation of clear, stable abstractions for hardware/firmware interaction.
An understanding of API design and the creation of clear, stable abstractions for hardware/firmware interaction.
NEWFEATURED
)
Provide guidance and recommendations on system architecture, API design, and integration strategies to enable scalable, robust, and future-proof product solutions
Provide guidance and recommendations on system architecture, API design, and integration strategies to enable scalable, robust, and future-proof product solutions
NEW