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Locations
Locations
Salaries
Date posted
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*outside iR35* What You'll Be Doing * Designing and developing enterprise-grade solutions in an Agile team. * Building and maintaining middleware services using C#, REST APIs, FIX messaging, XML, and Microservices. * Leading architecture discussions, code reviews, and release management. * Collaborating with users and cross-functional teams to define and execute testing strategies. * Mentoring junior developers and contributing to internal best practices. What You Bring * A strong academic background in Computer Science, Engineering, or a related field. * Proven experience in commodities trading, especially with derivatives and platforms like ICE, CME, NASDAQ, Trayport, or TT. * Deep knowledge of C# .NET, RESTful services, and microservice architecture. * Hands-on experience with FIX messaging, XML, AMQ, and ideally nHibernate, OData, and TDD.
*outside iR35* What You'll Be Doing * Designing and developing enterprise-grade solutions in an Agile team. * Building and maintaining middleware services using C#, REST APIs, FIX messaging, XML, and Microservices. * Leading architecture discussions, code reviews, and release management. * Collaborating with users and cross-functional teams to define and execute testing strategies. * Mentoring junior developers and contributing to internal best practices. What You Bring * A strong academic background in Computer Science, Engineering, or a related field. * Proven experience in commodities trading, especially with derivatives and platforms like ICE, CME, NASDAQ, Trayport, or TT. * Deep knowledge of C# .NET, RESTful services, and microservice architecture. * Hands-on experience with FIX messaging, XML, AMQ, and ideally nHibernate, OData, and TDD.
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*outside iR35* What You'll Be Doing * Designing and developing enterprise-grade solutions in an Agile team. * Building and maintaining middleware services using C#, REST APIs, FIX messaging, XML, and Microservices. * Leading architecture discussions, code reviews, and release management. * Collaborating with users and cross-functional teams to define and execute testing strategies. * Mentoring junior developers and contributing to internal best practices. What You Bring * A strong academic background in Computer Science, Engineering, or a related field. * Proven experience in commodities trading, especially with derivatives and platforms like ICE, CME, NASDAQ, Trayport, or TT. * Deep knowledge of C# .NET, RESTful services, and microservice architecture. * Hands-on experience with FIX messaging, XML, AMQ, and ideally nHibernate, OData, and TDD.
*outside iR35* What You'll Be Doing * Designing and developing enterprise-grade solutions in an Agile team. * Building and maintaining middleware services using C#, REST APIs, FIX messaging, XML, and Microservices. * Leading architecture discussions, code reviews, and release management. * Collaborating with users and cross-functional teams to define and execute testing strategies. * Mentoring junior developers and contributing to internal best practices. What You Bring * A strong academic background in Computer Science, Engineering, or a related field. * Proven experience in commodities trading, especially with derivatives and platforms like ICE, CME, NASDAQ, Trayport, or TT. * Deep knowledge of C# .NET, RESTful services, and microservice architecture. * Hands-on experience with FIX messaging, XML, AMQ, and ideally nHibernate, OData, and TDD.
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Lead Salesforce Developer Contract (Outside IR35) Fully Remote - Day Rate: Competitive, open to negotiation - Duration: 6 months+ Working Arrangements: Fully Remote - Interview: 1 Video Call - About the Role - We are seeking an experienced Lead Salesforce Developer for a hands-on leadership role within a fast-growing, innovative financial services environment. You will take ownership of the Salesforce platform, leading a small, talented team and driving technical excellence across the business. What Youll Do * Lead the design, development, and deployment of Salesforce solutions * Collaborate with stakeholders to gather requirements and deliver tailored functionality * Manage and mentor a team of Salesforce professionals (Administrators, Analysts, and Developers) * Ensure data integrity, oversee integrations, and manage complex data models
Lead Salesforce Developer Contract (Outside IR35) Fully Remote - Day Rate: Competitive, open to negotiation - Duration: 6 months+ Working Arrangements: Fully Remote - Interview: 1 Video Call - About the Role - We are seeking an experienced Lead Salesforce Developer for a hands-on leadership role within a fast-growing, innovative financial services environment. You will take ownership of the Salesforce platform, leading a small, talented team and driving technical excellence across the business. What Youll Do * Lead the design, development, and deployment of Salesforce solutions * Collaborate with stakeholders to gather requirements and deliver tailored functionality * Manage and mentor a team of Salesforce professionals (Administrators, Analysts, and Developers) * Ensure data integrity, oversee integrations, and manage complex data models
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Role: Contract Senior Software Engineer - Backend - Rate: C.£550 Outside IR35 Per day - Location: Bradford - Hybrid (2x days on site) Length: 3-6 months - We are working with a growing, forward-thinking technology company dedicated to building scalable, reliable, and high-performing solutions for our customers. As a Senior Software Engineer, you will be responsible for designing, developing, and maintaining server-side applications and services. You'll work closely with cross-functional teams to ensure our systems are performant, secure, and deliver a great user experience. * Design, implement, and maintain backend services, APIs, and databases. * Collaborate with product managers, frontend engineers, and other stakeholders to deliver features end-to-end. * Ensure systems are scalable, reliable, and maintainable. * Write clean, testable, and efficient code following b
Role: Contract Senior Software Engineer - Backend - Rate: C.£550 Outside IR35 Per day - Location: Bradford - Hybrid (2x days on site) Length: 3-6 months - We are working with a growing, forward-thinking technology company dedicated to building scalable, reliable, and high-performing solutions for our customers. As a Senior Software Engineer, you will be responsible for designing, developing, and maintaining server-side applications and services. You'll work closely with cross-functional teams to ensure our systems are performant, secure, and deliver a great user experience. * Design, implement, and maintain backend services, APIs, and databases. * Collaborate with product managers, frontend engineers, and other stakeholders to deliver features end-to-end. * Ensure systems are scalable, reliable, and maintainable. * Write clean, testable, and efficient code following b
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Job Title: Site Reliability Engineer - 12 Month Contract - No Sponsorship Available - Job Description - Our client are hiring a Site Reliability Engineering to join their Site Reliability Engineering group whose main objective is to ensure their services are consistently reliable for their customers. As part of adynamicand self-organizing team, you will have the opportunity to work with modern programming languages and manage software within public cloud environments. Our clients cross-functional teams cover the entire technology stack, from front ends to APIs and databases, providing the resources to build, deploy, and operate their own software. Responsibilities * Support applications in production, including responding to incidents and conducting post-incident reviews. * Apply observability engineering to proactively detect system degradation, understand system sta
Job Title: Site Reliability Engineer - 12 Month Contract - No Sponsorship Available - Job Description - Our client are hiring a Site Reliability Engineering to join their Site Reliability Engineering group whose main objective is to ensure their services are consistently reliable for their customers. As part of adynamicand self-organizing team, you will have the opportunity to work with modern programming languages and manage software within public cloud environments. Our clients cross-functional teams cover the entire technology stack, from front ends to APIs and databases, providing the resources to build, deploy, and operate their own software. Responsibilities * Support applications in production, including responding to incidents and conducting post-incident reviews. * Apply observability engineering to proactively detect system degradation, understand system sta
PREMIUM
Rest API's and Microservice architecture * Restful API Design and development fundamentals * Good SQL knowledge
Rest API's and Microservice architecture * Restful API Design and development fundamentals * Good SQL knowledge
Rest API's and Microservice architecture * Restful API Design and development fundamentals * Good SQL knowledge
Rest API's and Microservice architecture * Restful API Design and development fundamentals * Good SQL knowledge
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Back End: REST Services: REST API, Node.js
Back End: REST Services: REST API, Node.js
NEW
Were seeking a Senior Automation Tester for our public sector client on an initial 5-month contract paying up to £750 per day Inside IR35. You will need to either hold a current Security Clearance (SC) or have the ability to pass it. This role offers remote working and the opportunity to work on innovative projects involving cloud, automation, and AI technologies. Youll be responsible for building and maintaining automated test frameworks, ensuring quality across front-end and back-end systems, and collaborating within a multi-disciplinary Agile team. The successful Senior Automation Tester will possess proven skills working with the following - * C#, Selenium, BDD, MSTest, RestSharp, JavaScript * Azure, Azure DevOps, GitHub * JMeter or Azure Load Test * SQL and test automation from scratch * Agile delivery experience
Were seeking a Senior Automation Tester for our public sector client on an initial 5-month contract paying up to £750 per day Inside IR35. You will need to either hold a current Security Clearance (SC) or have the ability to pass it. This role offers remote working and the opportunity to work on innovative projects involving cloud, automation, and AI technologies. Youll be responsible for building and maintaining automated test frameworks, ensuring quality across front-end and back-end systems, and collaborating within a multi-disciplinary Agile team. The successful Senior Automation Tester will possess proven skills working with the following - * C#, Selenium, BDD, MSTest, RestSharp, JavaScript * Azure, Azure DevOps, GitHub * JMeter or Azure Load Test * SQL and test automation from scratch * Agile delivery experience
NEW
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Use Postman for API testing and PowerShell to support automation.
Use Postman for API testing and PowerShell to support automation.
FEATURED
Configure and support Axway solutions, including API management and B2B gateway. * Working knowledge of Axway technologies, particularly API management and B2B gateway.
Configure and support Axway solutions, including API management and B2B gateway. * Working knowledge of Axway technologies, particularly API management and B2B gateway.
FEATURED
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REST API development
REST API development
NEW
Experience in using API testing tools like Postman, Insomnia
Experience in using API testing tools like Postman, Insomnia
NEWFEATURED
Senior Security Engineer Defender PurView Sentinel
Senior Security Engineer Defender PurView Sentinel
Invitise Ltd
EC1A, City of London
Up to £500 per day Outside IR35
PowerShell scripting and use of Microsoft Graph API
PowerShell scripting and use of Microsoft Graph API
NEW
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Hands-on experience integrating external data sources into internal systems using ETL pipelines and API-driven data exchange.
Hands-on experience integrating external data sources into internal systems using ETL pipelines and API-driven data exchange.
NEW
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Experience with API development, web scraping/crawling, and data integration.
Experience with API development, web scraping/crawling, and data integration.
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Designing and executing automated and exploratory tests, particularly in RESTful API environments
Designing and executing automated and exploratory tests, particularly in RESTful API environments
NEW
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Sharepoint SPFx Developer (SC CLEARED)
Sharepoint SPFx Developer (SC CLEARED)
Yolk Recruitment
Cardiff, South Glamorgan
£500 - £550 per day + INSIDE IR35
Exposure to SharePoint REST API and modern development practices.
Exposure to SharePoint REST API and modern development practices.
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• Understanding of C#, ASP.NET MVC/Core/Blazor, Web API, and Entity Framework for backend development.
• Understanding of C#, ASP.NET MVC/Core/Blazor, Web API, and Entity Framework for backend development.
NEW
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Develop iOS applications (Swift or Objective-C) with RESTful API integrations.
Develop iOS applications (Swift or Objective-C) with RESTful API integrations.
NEWFEATURED
Microsoft 365 Technical Consultant (SC CLEARED)
Microsoft 365 Technical Consultant (SC CLEARED)
Yolk Recruitment
Cardiff, South Glamorgan
£500 - £600 per day + INSIDE IR35
Experience with SharePoint REST API and modern development practices.
Experience with SharePoint REST API and modern development practices.
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SharePoint REST API: Integration with SharePoint lists and libraries
SharePoint REST API: Integration with SharePoint lists and libraries
Generate scripts for automating functions and interfacing systems such as Rest API etc.
Generate scripts for automating functions and interfacing systems such as Rest API etc.
FEATURED
)
Experience in developing, debugging, and maintaining with technologies and frameworks such as Java, J2EE, Microservices, Spring Boot, Spring Cloud, Angular, JavaScript, and REST API.
Experience in developing, debugging, and maintaining with technologies and frameworks such as Java, J2EE, Microservices, Spring Boot, Spring Cloud, Angular, JavaScript, and REST API.
NEW
5+ years REST/RESTful API development.
5+ years REST/RESTful API development.
NEWFEATURED