Find your next tech and IT Job or contract .NET

Front and Backend C# Dot Net Javascript Software Developer with Umbraco Our Client is an established leader in the travel industry. They are looking to recruit a Full Stack Dot Net Software Developer to work on a major transformation programme for this award-winning Luxury Travel Company. Projects will include designing and implementing web based tools to automate operational tasks and improve accuracy of pricing and management information and web site enhancements. We are seeking an individual who is looking to take on the technical design and implementation of technical solutions for the business. The Client works with a number of third party suppliers and the candidate will also liaise and work closely with our vendors to help deliver solutions, as required. Depending on your expertise you will have the opportunity to take on the management of projects involving multiple stakeholders and vendors. You will be responsible for: Design and implementation of web based tools to automate a variety of business processes Implementation of enhancements to the company website (built on Umbraco) Interfacing with business systems and data warehouse to implement the required functionality Analysing and identifying ways to automate processes working alongside the business lead Designing and validating the technical suitability of proposed solutions including database design and software approaches proposed by vendors Taking on complex business change projects that involve multiple stakeholders and suppliers Potential for managing suppliers tightly to ensure delivery of our requirements within budget and on time Risk and issue management to ensure a pro-active approach is taken to managing these Skills and Experience: The Client would ideally like to see some experience with specific retail Travel Industry domain knowledge Track record of delivering projects involving in-house resources and/or third party suppliers Ability to design and architect technical solutions to complex business problems Full Stack development experience (ASP.NET, C#, HTML, CSS, JavaScript, JQuery, ReactJS, AngularJS, MS SQL Server) CMS experience e.g. with Umbraco – experience of Umbraco would be a plus Continuous Delivery skills, tools and techniques (e.g. Git, Github, Jenkins, Docker, Vagrant, Chef, Puppet, Selenium, etc.) Familiar with Azure cloud services & setting up/managing resources/deploying apps Experience in implementing business process automation Capable of working with (and developing) multiple (REST) APIs documented with e.g. OpenAPI/swagger PowerBI, PowerQuery, Dax & M Other API messaging formats e.g. JSON, XML, SOAP Experience of structured testing and quality assurance approaches (e.g. Test Driven Development and Behaviour Driven Development) A positive and cooperative individual who will work effectively across departments and within a team Ability to understand and document business requirements This is an exciting new role at this organisation – salary range £50K - £65K. The company is based in London. Please send your CV to us in Word format along with your salary and availability.

Senior Backend Developer with Umbraco C# .net Working as part of the Digital team, you'll be responsible for the ongoing development and improvements to an eCommerce website as well as other internal applications for this award-winning Travel Company. You will be responsible for: Leading the eCommerce web and application development from a technical perspective Collaborating with the front end developer and design resource to deliver improved UI & UX A problem solver - you'll need to be able to analyse and suggest improvements to existing website features Analysing and identifying ways to automate processes working alongside the business lead Implementing automated regression testing for the software developed Skills and Experience: Excellent working knowledge of ASP.NET, C#, HTML, JavaScript, jQuery, React Framework, MS SQL Server, Mongo DB, Elasticsearch Understanding of SOLID development principles Worked previously on projects using the Umbraco CMS Continuous Delivery skills, tools and techniques (e.g. Git, Github, Team City, Octopus, Jenkins, Selenium, etc.) Familiar with Azure cloud services & setting up/managing resources/deploying apps Familiar with JIRA and Confluence Capable of working with (and developing) multiple (REST) APIs documented with e.g. OpenAPI/swagger and other API messaging formats e.g. JSON, XML, SOAP Experience of PowerBI, PowerQuery and R Experience of structured testing and quality assurance approaches (e.g. Test Driven Development and Behaviour Driven Development) A positive and cooperative individual who will work effectively across departments and within a team Worked in an agile/Kanban environment and familiar with JIRA and confluence Not afraid to challenge existing thinking in order to improve processes The salary for this role will be in the range £55K to £75K per year depending on experience. The Client is based in Central London and this role will be working remotely. Do send your CV to us in Word format along with your salary and availability.

Dot .net Software Engineer with Azure Devops Our Client is an international company who are looking to recruit a Lead Software Developer with Dot net technology coupled with SQL Server and Azure and Devops. You must have at least 5 years solid expertise in software engineering using .net Core. The following are the key skills that the Client will require: Proficient in .Net Core, ASP.Net Core. C#, WPF, Web API, WCF, SQL Server (T-SQL), PowerShell, HTML, JavaScript Should have working knowledge on Azure Service Bus and Rabbit MQ Proficient in CI/CD and release management using Azure pipeline (Infrastructure as Code using ARM templates). Should have experience in the implementation of microservice/micro database projects. Good working knowledge of Azure cloud services and moving on-prem applications to the Cloud. Should have good knowledge of PowerShell, Reporting Services (SSRS) Good knowledge about Containerization (Kubernetes/Docker). The duration of this assignment will be between 6 to 12 months. The position will be based in Victoria London albeit remote for the next few weeks. Please do send your CV to us in Word format along with your daily rate and availability.

The Department for Energy Security and Net Zero (DESNZ) is hiring a content design leader to shape how critical information is delivered to the public, supporting the UK’s mission to become a clean energy superpower. About the role You’ll lead and develop the department’s content strategy, ensuring content is clear, accessible and meets the needs of users across a wide range of services. Working closely with senior stakeholders and multidisciplinary teams, you’ll shape how DESNZ communicates complex policy in a way that is simple, usable and impactful. What you’ll be doing Developing and delivering a department-wide content strategy aligned to key priorities Leading and managing a team of content designers Driving large-scale content improvement projects across Ensuring content is clear, accessible and user-focused Advising stakeholders and influencing decisions at a senior level Improving processes, workflows and ways of working across the team Championing best practice in content design and user-centred design Supporting innovation as digital content evolves, including new technologies

Senior Backend Developer with C# .net Framework Working as part of the Digital team, you'll be responsible for the ongoing development and improvements to an eCommerce website as well as other internal applications for this award-winning Travel Company. You will be responsible for: Leading the eCommerce web and application development from a technical perspective Collaborating with the front end developer and design resource to deliver improved UI & UX A problem solver - you'll need to be able to analyse and suggest improvements to existing website features Analysing and identifying ways to automate processes working alongside the business lead Implementing automated regression testing for the software developed Skills and Experience: Excellent working knowledge of ASP.NET, C#, HTML, JavaScript, jQuery, React Framework, MS SQL Server, Mongo DB, Elasticsearch Understanding of SOLID development principles Worked previously on projects using the Umbraco CMS Continuous Delivery skills, tools and techniques (e.g. Git, Github, Team City, Octopus, Jenkins, Selenium, etc.) Familiar with Azure cloud services & setting up/managing resources/deploying apps Familiar with JIRA and Confluence Capable of working with (and developing) multiple (REST) APIs documented with e.g. OpenAPI/swagger and other API messaging formats e.g. JSON, XML, SOAP Experience of PowerBI, PowerQuery and R Experience of structured testing and quality assurance approaches (e.g. Test Driven Development and Behaviour Driven Development) A positive and cooperative individual who will work effectively across departments and within a team Worked in an agile/Kanban environment and familiar with JIRA and confluence Not afraid to challenge existing thinking in order to improve processes The Client will consider candidates with solid Backend development skills without Umbraco. The salary for this role will be in the range £50K to £80K per year depending on experience. The Client is based in Central London and this role will be working remotely. Do send your CV to us in Word format along with your salary and availability.

At the Department for Education (DfE), you’ll help build and modernise services that support the allocation of over £75bn in funding for education and training. Working in a cloud-first environment, you’ll play a key role in designing scalable, secure systems that improve how funding reaches schools, colleges and learners. About the role As a Senior Technical Architect , you’ll lead the technical direction for services within the Funding Service Delivery team, ensuring they are resilient, efficient and built to modern standards. You’ll work in multidisciplinary agile teams, collaborating with developers, product managers and policy experts to design systems that meet real user needs. This is a high-impact role where you’ll shape long-term technical strategy while delivering practical solutions at pace. What you’ll be doing Define and lead the technical strategy across services Design scalable, cloud-first architectures Lead technical delivery across multiple projects and services Ensure systems are secure, resilient and user-centred Guide teams in building modern web services in agile environments Communicate complex technical ideas to technical and non-technical audiences Challenge existing approaches and drive digital transformation Support and contribute to the DfE architecture community Help establish and promote best practice, standards and guidance

This role is an opportunity to work on high-profile content that helps the public understand energy policy, access services, and engage with one of the government’s most important priorities. What you’ll be doing You’ll lead on creating and improving user-centred content for , ensuring it is clear, accessible and easy to use. Working across a range of teams, you’ll manage both day-to-day publishing and strategic projects, helping shape content that supports complex policies and services. You’ll collaborate with stakeholders, guide teams on best practice, and continuously improve the quality and consistency of content across the department.

C# .NET Software Developer with FX and Fixed Income Our Client is a niche boutique broker specialising in FX. They are looking to recruit a C# .NET Software Developer with at least 3 to 5 years proven track record of developing with C# .NET. The Client would like meet candidates ideally with some understanding Trading Floor projects to include Fixed Income, Risk Management, Swap Options and FX. You need to be resilient as you will be working closely with traders and developing financial trading systems so an understanding of FX instruments would be very useful. The Company is a fast growing dynamic brokerage firm, specialising in currency options and interest rate swaps. They are seeking a talented technologist to join the London team. You will be working in a fast paced, delivery focused environment where you will get the opportunity to make a genuine impact on the business rather than just ‘making up the numbers’. Initially reporting to the CTO, the successful candidate will become a key member of the global team. There will be a large amount of autonomy in the role, giving the candidate the opportunity to showcase their development talents, Responsibilities :- Re-architecting and building the in-house middle office platform and integrating with a new trading platform. Developing pricing toolsets Integrating to external reporting/tradeflow and pricing APIs. Maintaining the company’s daily operation on the existing platforms. Essential skills :- Minimum 3 to 5 years experience of Microsoft web technologies ( C#, Core MVC ) Relational database experience (SQL Server) Proactively able to build relationships with stakeholders:- sales, brokers, middle office, external vendors. Ability to produce clean, well-written, fully tested production ready software. Desirable skills :- Knowledge of the FIX protocol Knowledge of FX trade processing Basic knowledge of Foreign exchange products (vanilla/exotic options, fx cash) ( training will be given) Qualifications: Computer Science related degree preferred At least 3 years experience in a comparable development role. The Client is based in the City of London. The salary for this role will be £60K - £75K. Please do send your CV to us in Word format along with your salary and availability.

At CGI, we operate and enhance critical digital platforms that support national regulatory services and deliver real-world impact. As a Lead Software Engineer within a key Managed Service team, you will play a central role in evolving a modern digital platform, balancing feature innovation with operational excellence. Working across a full-stack environment, you will guide technical direction, strengthen engineering practices and ensure resilient, high-performing services for our public sector client. This is an opportunity to shape platform strategy, mentor talented engineers and drive continuous improvement within a collaborative environment where your expertise directly contributes to secure, reliable digital services. CGI was recognised in the Sunday Times Best Places to Work List 2025 and has been named a UK ‘Best Employer’ by the Financial Times. We offer a competitive salary, excellent pension, private healthcare, plus a share scheme (3.5% + 3.5% matching) which makes you a CGI Partner not just an employee. We are committed to inclusivity, building a genuinely diverse community of tech talent and inspiring everyone to pursue careers in our sector, including our Armed Forces, and are proud to hold a Gold Award in recognition of our support of the Armed Forces Corporate Covenant. Join us and you’ll be part of an open, friendly community of experts. We’ll train and support you in taking your career wherever you want it to go. Due to the secure nature of the programme, you may be required to undergo UK Security Clearance. This is a hybrid position.

C# .NET Software Developer with FX and Fixed Income Our Client is a niche boutique broker specialising in FX. They are looking to recruit a C# .NET Software Developer with at least 3 to 5 years proven track record of developing with C# .NET. The Client would like meet candidates ideally with some understanding Trading Floor projects to include Fixed Income, Risk Management, Swap Options and FX. You need to be resilient as you will be working closely with traders and developing financial trading systems so an understanding of FX instruments would be very useful. The Company is a fast growing dynamic brokerage firm, specialising in currency options and interest rate swaps. They are seeking a talented technologist to join the London team. You will be working in a fast paced, delivery focused environment where you will get the opportunity to make a genuine impact on the business rather than just ‘making up the numbers’. Initially reporting to the CTO, the successful candidate will become a key member of the global team. There will be a large amount of autonomy in the role, giving the candidate the opportunity to showcase their development talents, Responsibilities :- Re-architecting and building the in-house middle office platform and integrating with a new trading platform. Developing pricing toolsets Integrating to external reporting/tradeflow and pricing APIs. Maintaining the company’s daily operation on the existing platforms. Essential skills :- Minimum 3 to 5 years experience of Microsoft web technologies ( C#, Core MVC ) Relational database experience (SQL Server) Proactively able to build relationships with stakeholders:- sales, brokers, middle office, external vendors. Ability to produce clean, well-written, fully tested production ready software. Desirable skills :- Knowledge of the FIX protocol Knowledge of FX trade processing Basic knowledge of Foreign exchange products (vanilla/exotic options, fx cash) ( training will be given) Qualifications: Computer Science related degree preferred At least 3 years experience in a comparable development role. The Client is based in the City of London. The salary for this role will be £50K - £75K. Please do send your CV to us in Word format along with your salary and availability.

C# .NET Software Developer with FX and Fixed Income Our Client is a niche boutique broker specialising in FX. They are looking to recruit a C# .NET Software Developer with at least 3 to 5 years proven track record of developing with C# .NET. The Client would like meet candidates ideally with some understanding Trading Floor projects to include Fixed Income, Risk Management, Swap Options and FX. You need to be resilient as you will be working closely with traders and developing financial trading systems so an understanding of FX instruments would be very useful. The Company is a fast growing dynamic brokerage firm, specialising in currency options and interest rate swaps. They are seeking a talented technologist to join the London team. You will be working in a fast paced, delivery focused environment where you will get the opportunity to make a genuine impact on the business rather than just ‘making up the numbers’. Initially reporting to the CTO, the successful candidate will become a key member of the global team. There will be a large amount of autonomy in the role, giving the candidate the opportunity to showcase their development talents, Responsibilities :- Re-architecting and building the in-house middle office platform and integrating with a new trading platform. Developing pricing toolsets Integrating to external reporting/tradeflow and pricing APIs. Maintaining the company’s daily operation on the existing platforms. Essential skills :- Minimum 3 to 5 years experience of Microsoft web technologies ( C#, Core MVC ) Relational database experience (SQL Server) Proactively able to build relationships with stakeholders:- sales, brokers, middle office, external vendors. Ability to produce clean, well-written, fully tested production ready software. Desirable skills :- Knowledge of the FIX protocol Knowledge of FX trade processing Basic knowledge of Foreign exchange products (vanilla/exotic options, fx cash) ( training will be given) Qualifications: Computer Science related degree preferred At least 3 years experience in a comparable development role. The Client is based in the City of London. The salary for this role will be £80K - £100K. Please do send your CV to us in Word format along with your salary and availability.

C# .NET Software Developer with FX and Fixed Income Our Client is a niche boutique broker specialising in FX. They are looking to recruit a C# .NET Software Developer with at least 3 to 5 years proven track record of developing with C# .NET. The Client would like meet candidates ideally with some understanding Trading Floor projects to include Fixed Income, Risk Management, Swap Options and FX. You need to be resilient as you will be working closely with traders and developing financial trading systems so an understanding of FX instruments would be very useful. The Company is a fast growing dynamic brokerage firm, specialising in currency options and interest rate swaps. They are seeking a talented technologist to join the London team. You will be working in a fast paced, delivery focused environment where you will get the opportunity to make a genuine impact on the business rather than just ‘making up the numbers’. Initially reporting to the CTO, the successful candidate will become a key member of the global team. There will be a large amount of autonomy in the role, giving the candidate the opportunity to showcase their development talents, Responsibilities :- Re-architecting and building the in-house middle office platform and integrating with a new trading platform. Developing pricing toolsets Integrating to external reporting/tradeflow and pricing APIs. Maintaining the company’s daily operation on the existing platforms. Essential skills :- Minimum 3 to 5 years experience of Microsoft web technologies ( C#, Core MVC ) Relational database experience (SQL Server) Proactively able to build relationships with stakeholders:- sales, brokers, middle office, external vendors. Ability to produce clean, well-written, fully tested production ready software. Desirable skills :- Knowledge of the FIX protocol Knowledge of FX trade processing Basic knowledge of Foreign exchange products (vanilla/exotic options, fx cash) ( training will be given) Qualifications: Computer Science related degree preferred At least 3 years experience in a comparable development role. The Client is based in the City of London. The rate will be in the range £450 per day to £600 per day. The duration of this contract will be 12 months. Please do send your CV to us in Word format along with your salary/rate and availability.

C# .net Lead Software Developer with SQL and Azure Our Client is an international company who are looking to recruit a Lead Software Developer with Dot net technology coupled with SQL Server and Azure and Devops. You must have at least 5 years solid expertise in software engineering using .net Core. The following are the key skills that the Client will require: Proficient in .Net Core, ASP.Net Core. C#, WPF, Web API, WCF, SQL Server (T-SQL), PowerShell, HTML, JavaScript Should have working knowledge on Azure Service Bus and Rabbit MQ Proficient in CI/CD and release management using Azure pipeline (Infrastructure as Code using ARM templates). Should have experience in the implementation of microservice/micro database projects. Good working knowledge of Azure cloud services and moving on-prem applications to the Cloud. Should have good knowledge of PowerShell, Reporting Services (SSRS) Good knowledge about Containerization (Kubernetes/Docker). The duration of this assignment will be between 6 to 12 months. The position will be based in Victoria London albeit remote for the next few weeks. Please do send your CV to us in Word format along with your daily rate and availability.

Dans le cadre d'un projet avec l'un de nos client dans l'énergie, nous sommes à la recherche d'un développeur en .Net. In this context, we are 2 teams of information system architects and software developers working together with business colleagues to analyze, design, develop, maintain and support several products. •Kiwi enables to exploit the flexibility of many small assets and to offer demand-side management services. It is connected to these assets with an edge device or through an API. •Real-time asset services ensure notably the real-time aFRR steering and the real-time data collection from the assets. The primary focus of the present mission is real-time asset services. •aFRR dispatcher receives every 2 to 4 seconds the aFRR amount requested by the TSO (= grid operator), calculates in real-time the optimal allocation towards the aFRR bids and power assets (batteries, renewable parks, power plants in general) and sends every 2 to 4 seconds the individual setpoints to the concerned connectivity solutions. •TimeFlux connects the physical reality of power assets to forecasters and optimizers. Concretely, it collects and processes the real-time data from power assets, with a low-latency streaming architecture, and exposes it to other software systems in the organization (e.g., forecasters, optimizers). •GENCO connects the software systems with the industrial SCADA systems. Main activities As a software developer, you will contribute with the team to all activities: -Clarify with functional analysts and with domain experts. -Design technically and make architectural proposals, documented in diagrams, including APIs, services, front-end and back-end interactions. -Subdivide the proposal into agile progressive development upgrades. -Implement builds and associated testing and maintenance tools. -Develop back-end services and APIs. -Write tests in collaboration with business colleagues. -Document and develop user manuals. -Provide user assistance and support. -Monitor systems and provide level 2 support, incident resolution, and troubleshooting (root causes of recurring incidents). Hard Skills Required: at least 4+ years of software engineering on software solutions with complex technical features. The following do NOT count: web sites, digitalized workflows, database-oriented applications, enterprise CRUD applications. Education: a master as polytechnic engineer is a strong plus. The following abilities are required: - Proficiency in C# -Hands-on experience with Azure cloud (if experience with AWS cloud, willingness to learn & switch to Azure) and ideally Kubernetes/AKS (deployment, autoscaling) -Hands-on experience in developing and operating event-driven architectures (Kafka, Azure Event Hub, MQTT and/or Azure Service Bus) and distributed systems -Strong testing culture: unit tests, integration tests, and production validation -Production-grade observability: metrics, logging, alerting (Grafana, Prometheus, or equivalent) -Familiarity with agile development practices -PostgreSQL, Redis -CI/CD: GitHub Actions, Continuous Deployment -Experience with one of these technologies is a plus: oScala (for KiWi cloud) oRust (for KiWi edge) oPython (to collaborate with other teams and to refactor some Python code to C#). Soft Skills The following abilities are also required: -Proactive mindset with a collaborative spirit and a willingness to support team delivery. -Ability to break down complex problems and propose pragmatic, scalable solutions. -Empathy, humility, and a sense of ownership and accountability.- Good communication and interpersonal skills. Languages: Fluent in English.