Python and/or JavaScript/TypeScript experience, strong AWS skills, Kubernetes, CI/CD, and experience with data platforms, high-volume processing, API development, and Terraform.
Python and/or JavaScript/TypeScript experience, strong AWS skills, Kubernetes, CI/CD, and experience with data platforms, high-volume processing, API development, and Terraform.
Senior Full Stack Developer, .Net Core Developer/ C# Developer, Full Stack Programmer, C#, Blazor, AWS, Cloud, Azure, .Net, Microsoft Stack, ASP.Net, MVC, WEB, NoSQL, SQL Server, API, up to 75K + package - This is an office based job.
Senior Full Stack Developer, .Net Core Developer/ C# Developer, Full Stack Programmer, C#, Blazor, AWS, Cloud, Azure, .Net, Microsoft Stack, ASP.Net, MVC, WEB, NoSQL, SQL Server, API, up to 75K + package - This is an office based job.
About Us - At Calisen, were leading the smart energy technology revolution. We own, finance, install, and service essential energy infrastructure assets that enable smarter energy for all. From smart metering and data services to EV charging and the electrification of heat, were helping to build a more sustainable, greener future. Our mission is to deliver smarter, more sustainable energy through innovation and collaboration. Were proud of our inclusive culture, where everyone is respected and empowered to make a difference. As we continue to grow, were looking for passionate individuals who share our values and want to be part of a team thats shaping the future of energy. About the Role - Were looking for a skilled and motivated Software Development Engineer in Test (SDET) to join our Digital team. This is a key role supporting business-critical IT transformation acr
About Us - At Calisen, were leading the smart energy technology revolution. We own, finance, install, and service essential energy infrastructure assets that enable smarter energy for all. From smart metering and data services to EV charging and the electrification of heat, were helping to build a more sustainable, greener future. Our mission is to deliver smarter, more sustainable energy through innovation and collaboration. Were proud of our inclusive culture, where everyone is respected and empowered to make a difference. As we continue to grow, were looking for passionate individuals who share our values and want to be part of a team thats shaping the future of energy. About the Role - Were looking for a skilled and motivated Software Development Engineer in Test (SDET) to join our Digital team. This is a key role supporting business-critical IT transformation acr
London - 2025-08-26T00:00:00Z - 170103 - Vanguard - Location: London or Manchester (Hybrid) About Vanguard - Vanguard is an investment company unlike any other. It was founded by Jack Bogle in the US in 1975 on a simple but revolutionary idea: that an investment company should manage its funds solely in the interests of its clients. Jack helped bring investing to the masses with the index fund. Index funds do not pick individual shares or bonds to beat the market. They track the performance of the entire market. Or as Jack put it, "Don't look for the needle in the haystack. Just buy the haystack!". We have stood for low-cost, uncomplicated investing ever since. Over the last 45 years people have come round to our way of thinking and more than 50 million investors worldwide now trust us with their money. About the Role
London - 2025-08-26T00:00:00Z - 170103 - Vanguard - Location: London or Manchester (Hybrid) About Vanguard - Vanguard is an investment company unlike any other. It was founded by Jack Bogle in the US in 1975 on a simple but revolutionary idea: that an investment company should manage its funds solely in the interests of its clients. Jack helped bring investing to the masses with the index fund. Index funds do not pick individual shares or bonds to beat the market. They track the performance of the entire market. Or as Jack put it, "Don't look for the needle in the haystack. Just buy the haystack!". We have stood for low-cost, uncomplicated investing ever since. Over the last 45 years people have come round to our way of thinking and more than 50 million investors worldwide now trust us with their money. About the Role
About THG Ingenuity - THG Ingenuity is a fully integrated digital commerce ecosystem, designed to power brands without limits. Our global end-to-end tech platform is comprised of three products: THG Commerce, THG Studios, THG Fulfilment. Each represents a single, unified solution, overcoming challenges and taking brands direct-to-consumer. Our client portfolio includes globally recognised brands such as Coca-Cola, Nestle, Elemis, Homebase, and Proctor & Gamble. As a Senior Software Engineer in our engineering team, you will play a key role in designing, developing, and delivering scalable microservices within THG Ingenuity's ecommerce platform. Leveraging modern technologies, predominantly Java 21, you will work as part of an agile team to architect and build highly available, distributed systems that are critical to the business.
About THG Ingenuity - THG Ingenuity is a fully integrated digital commerce ecosystem, designed to power brands without limits. Our global end-to-end tech platform is comprised of three products: THG Commerce, THG Studios, THG Fulfilment. Each represents a single, unified solution, overcoming challenges and taking brands direct-to-consumer. Our client portfolio includes globally recognised brands such as Coca-Cola, Nestle, Elemis, Homebase, and Proctor & Gamble. As a Senior Software Engineer in our engineering team, you will play a key role in designing, developing, and delivering scalable microservices within THG Ingenuity's ecommerce platform. Leveraging modern technologies, predominantly Java 21, you will work as part of an agile team to architect and build highly available, distributed systems that are critical to the business.
Experience of building useful, robust automated test suite to support a continuous deployment environment, implementing API's for internal and external use.
Experience of building useful, robust automated test suite to support a continuous deployment environment, implementing API's for internal and external use.
Own technical implementation of custom API integrations using HubSpot's API and middleware tools * Experience with HubSpot API and third-party integrations * Familiarity with JavaScript, JSON, or Python (for API and integration work)
Own technical implementation of custom API integrations using HubSpot's API and middleware tools * Experience with HubSpot API and third-party integrations * Familiarity with JavaScript, JSON, or Python (for API and integration work)
.NET Developer (C# 8, .NET, Azure / API Focus/ SQL/ NoSQL) This role is ideal for someone who thrives in an Agile environment, enjoys building API-first solutions from the ground up, and is passionate about leveraging Microsoft Azure to deliver scalable, secure, and high-performing digital products. * Build and deploy cloud-native applications using Microsoft Azure, including services like Azure Functions, App Services, API Management, and Azure DevOps.
.NET Developer (C# 8, .NET, Azure / API Focus/ SQL/ NoSQL) This role is ideal for someone who thrives in an Agile environment, enjoys building API-first solutions from the ground up, and is passionate about leveraging Microsoft Azure to deliver scalable, secure, and high-performing digital products. * Build and deploy cloud-native applications using Microsoft Azure, including services like Azure Functions, App Services, API Management, and Azure DevOps.
Ready to build smarter, faster, AI-driven solutions that transform digital marketing? Want a better work-life balance with our groundbreaking 4 day week model? At Ask BOSCO®, we're on a mission to help brands spend smarter with our award-winning predictive analytics platform. As our Lead Software Developer, you won’t just write code - you’ll shape the future of a high-growth MarTech product, lead technical strategy, and work directly with founders, data scientists, and clients to deliver impactful, intelligent solutions. If you're excited by ownership, innovation, and the chance to make a real mark in a scaling business, this is your opportunity - If you’re looking for a role where your voice matters, your technical leadership is valued, and your work directly influences product growth and innovation, we’d love to hear from you. Lead Python Software Developer
Ready to build smarter, faster, AI-driven solutions that transform digital marketing? Want a better work-life balance with our groundbreaking 4 day week model? At Ask BOSCO®, we're on a mission to help brands spend smarter with our award-winning predictive analytics platform. As our Lead Software Developer, you won’t just write code - you’ll shape the future of a high-growth MarTech product, lead technical strategy, and work directly with founders, data scientists, and clients to deliver impactful, intelligent solutions. If you're excited by ownership, innovation, and the chance to make a real mark in a scaling business, this is your opportunity - If you’re looking for a role where your voice matters, your technical leadership is valued, and your work directly influences product growth and innovation, we’d love to hear from you. Lead Python Software Developer
6 Month contract initially - Based: Hybrid - Bradford (Max 3 days p/w onsite) Rate: Market rates (via Umbrella company) We have a great opportunity with a world leading organisation where you will be provided with all of the support and development to succeed. A progressive organisation where you can really make a difference. We have a great opportunity for a Python Technical Architect. We are looking for a highly skilled Python Technical Architect to lead the design and development of scalable, high-performance applications and solutions. The ideal candidate will have strong technical leadership skills, deep Python expertise, and a passion for designing clean and robust architectures. Architect and design scalable, secure, and robust backend systems using Python. Define best practices and coding standards for development teams.
6 Month contract initially - Based: Hybrid - Bradford (Max 3 days p/w onsite) Rate: Market rates (via Umbrella company) We have a great opportunity with a world leading organisation where you will be provided with all of the support and development to succeed. A progressive organisation where you can really make a difference. We have a great opportunity for a Python Technical Architect. We are looking for a highly skilled Python Technical Architect to lead the design and development of scalable, high-performance applications and solutions. The ideal candidate will have strong technical leadership skills, deep Python expertise, and a passion for designing clean and robust architectures. Architect and design scalable, secure, and robust backend systems using Python. Define best practices and coding standards for development teams.
Role Title: Solution Architect - Location: Sheffield - Duration: 31/12/2025 - Rate: £330 per day - PAYE via Umbrella Only - We are seeking a highly skilled and experienced Solution Architect to design and implement scalable, secure, and high-performance IT solutions that align with our business goals. You will collaborate with cross-functional teams to translate business requirements into technical architectures and ensure successful delivery of complex systems. * Analyse business requirements and translate them into architectural blueprints. * Design end-to-end solutions that integrate with existing systems and platforms. * Lead technical teams in the implementation of architectural solutions. * Ensure solutions are scalable, secure, and aligned with enterprise architecture standards. * Collaborate with stakeholders, developers, and project managers to ensure alignme
Role Title: Solution Architect - Location: Sheffield - Duration: 31/12/2025 - Rate: £330 per day - PAYE via Umbrella Only - We are seeking a highly skilled and experienced Solution Architect to design and implement scalable, secure, and high-performance IT solutions that align with our business goals. You will collaborate with cross-functional teams to translate business requirements into technical architectures and ensure successful delivery of complex systems. * Analyse business requirements and translate them into architectural blueprints. * Design end-to-end solutions that integrate with existing systems and platforms. * Lead technical teams in the implementation of architectural solutions. * Ensure solutions are scalable, secure, and aligned with enterprise architecture standards. * Collaborate with stakeholders, developers, and project managers to ensure alignme
Were looking for a Senior Java Developer for our public sector client based in Leeds on an initial 12-month contract paying up to £700 per day Inside IR35. This role allows hybrid working with an expectation to attend the office 3 days per week. You will need to either hold current BPSS clearance or have the ability to pass it, and be eligible for SC clearance. The successful Senior Java Developer will possess proven skills working with the following * Java 21 (or later) * Test Driven Development (TDD) and Behaviour Driven Development (BDD) * Large microservice architectures * Agile environments and pair programming * Implementing APIs for internal and external use * Building automated test suites in CI/CD environments * Unix/Linux operating systems * Communicating technical concepts to non-technical audiences * Jackson, JAX-RS, Mockito * ActiveMQ or Kafka
Were looking for a Senior Java Developer for our public sector client based in Leeds on an initial 12-month contract paying up to £700 per day Inside IR35. This role allows hybrid working with an expectation to attend the office 3 days per week. You will need to either hold current BPSS clearance or have the ability to pass it, and be eligible for SC clearance. The successful Senior Java Developer will possess proven skills working with the following * Java 21 (or later) * Test Driven Development (TDD) and Behaviour Driven Development (BDD) * Large microservice architectures * Agile environments and pair programming * Implementing APIs for internal and external use * Building automated test suites in CI/CD environments * Unix/Linux operating systems * Communicating technical concepts to non-technical audiences * Jackson, JAX-RS, Mockito * ActiveMQ or Kafka
This is a 12 month contract, paying £700 per day, inside IR35, hybrid working (3 days per week onsite at the Leeds office). You'll work within an Agile, multidisciplinary team of Developers, Designers, and Analysts. You'll be expected to draw value from collaboration with others, actively seek input from colleagues and value a multidisciplinary team over hierarchy. Day-to-day, you'll be an integral part of that team in designing, creating and improving new and existing products, platforms and transactions across government. * Recent experience with Java 21 (or later). * Excellent understanding of TDD and BDD. * Experience with large microservice architectures. * Experience of working in an Agile environment. * Be willing to work in a pair programming environment. * Have experience in implementing APIs for internal and external use.
This is a 12 month contract, paying £700 per day, inside IR35, hybrid working (3 days per week onsite at the Leeds office). You'll work within an Agile, multidisciplinary team of Developers, Designers, and Analysts. You'll be expected to draw value from collaboration with others, actively seek input from colleagues and value a multidisciplinary team over hierarchy. Day-to-day, you'll be an integral part of that team in designing, creating and improving new and existing products, platforms and transactions across government. * Recent experience with Java 21 (or later). * Excellent understanding of TDD and BDD. * Experience with large microservice architectures. * Experience of working in an Agile environment. * Be willing to work in a pair programming environment. * Have experience in implementing APIs for internal and external use.
Job type: Contract - 12 months - Rate: £700 Umbrella - Location: Leeds (hybrid) x5 vacancies available - We are looking for an outstanding Java Developer, who can make a positive impact, and wants to contribute to the most demanding and exciting new digital service for the UK Government. Let's be clear about the impact of your work - better digital services in government will change the face of public services and have the potential to dramatically and positively transform the future of millions of people. We are looking for outstanding skills and you must be ready to quickly get to work within an Agile, multidisciplinary team of Developers, Designers, and Analysts focused on the the flagship welfare reform programme. We are looking for the kind of person who is unconcerned with titles and hierarchy; what really excites the successful candidate is problem-solving and
Job type: Contract - 12 months - Rate: £700 Umbrella - Location: Leeds (hybrid) x5 vacancies available - We are looking for an outstanding Java Developer, who can make a positive impact, and wants to contribute to the most demanding and exciting new digital service for the UK Government. Let's be clear about the impact of your work - better digital services in government will change the face of public services and have the potential to dramatically and positively transform the future of millions of people. We are looking for outstanding skills and you must be ready to quickly get to work within an Agile, multidisciplinary team of Developers, Designers, and Analysts focused on the the flagship welfare reform programme. We are looking for the kind of person who is unconcerned with titles and hierarchy; what really excites the successful candidate is problem-solving and
Join Our Cloud Platforms Team at Marsh McLennan! Are you a talented and motivated professional with a passion for cloud technology? Were seeking an experienced leader to join our dynamic Cloud Platforms team, based in Liverpool or Milton Keynes. This is an exciting opportunity to take on a pivotal role that will evolve into a management position. The ideal candidate will have proven experience in team management, a strong background in AWS, and a passion for driving innovative cloud solutions. * Operational Support for public cloud technology solutions, primarily focused on the AWS or Azure cloud platforms. * Obtain and maintain an in-depth understanding of AWS and Azure public cloud technologies to ensure all appropriate options are considered to support business initiatives. * Act as a consultant and subject matter expert for Project Managers, Developers, and Engine
Join Our Cloud Platforms Team at Marsh McLennan! Are you a talented and motivated professional with a passion for cloud technology? Were seeking an experienced leader to join our dynamic Cloud Platforms team, based in Liverpool or Milton Keynes. This is an exciting opportunity to take on a pivotal role that will evolve into a management position. The ideal candidate will have proven experience in team management, a strong background in AWS, and a passion for driving innovative cloud solutions. * Operational Support for public cloud technology solutions, primarily focused on the AWS or Azure cloud platforms. * Obtain and maintain an in-depth understanding of AWS and Azure public cloud technologies to ensure all appropriate options are considered to support business initiatives. * Act as a consultant and subject matter expert for Project Managers, Developers, and Engine