Software Engineer Key Technologies: C#, SQL, React, Bloomberg, Fidessa, FactSet APIs London Perm Role | 4 Days Onsite £55,000 - £65,000 Harrington Starr has partnered with a well-established London based Investment Bank to find a Full Stack Developer at the Associate level. This is a hands-on development role, supporting a range of internal systems across trading and business … operations. Key Responsibilities: Develop and maintain software using C#, SQL, and React Integrate real-time and historical data from third-party APIs Follow agile sprint plans and deliver reliable, secure solutions Ensure systems meet regulatory and cybersecurity standards Key Benefits: Salary up to £65,000 depending on experience 4 days onsite in a central London office Exposure to front-to … back office technology and teams Strong bonus and benefits package Key Requirements: Experience in financial services or trading environments Proficiency in C#, SQL Server, and front-end development (React preferred) Experience working with APIs and market data (e.g. Bloomberg, Fidessa) Strong communication, problem-solving, and collaboration skills Other Information: Agile working culture in a fast-paced environment No visa sponsorship More ❯
Burton-on-Trent, Staffordshire, England, United Kingdom
Crimson
modules to deliver comprehensive technology solutions. Facilitate workshops and training sessions for stakeholders to enhance understanding of D365 CE functionalities. Demonstrate a strong command of Microsoft technologies such as C#, .NET, SQL Server, and Azure for the effective development, integration, and customization of Dynamics 365 CE solutions. Possess experience in developing custom plugins using C# within the Dynamics 365 CE More ❯
Burton-On-Trent, Staffordshire, Burton upon Trent, United Kingdom Hybrid / WFH Options
Crimson
modules to deliver comprehensive technology solutions. Facilitate workshops and training sessions for stakeholders to enhance understanding of D365 CE functionalities. Demonstrate a strong command of Microsoft technologies such as C#, .NET, SQL Server, and Azure for the effective development, integration, and customization of Dynamics 365 CE solutions. Possess experience in developing custom plugins using C# within the Dynamics 365 CE More ❯
Bletchley, Buckinghamshire, United Kingdom Hybrid / WFH Options
hireful
with the support, tools, and flexibility to thrive. Role: Lead Software Developer, Senior .Net Developer, Software Engineering Manager, Senior Full Stack Developer, Lead .Net Developer, Lead Software Engineer, Senior C# Developer Salary: £65k - £75k base + Bonus Benefits: 5% pension, 25 days holiday, 2 wellbeing days, Christmas shutdown, private healthcare, life assurance, cinema tickets & more Location: Milton Keynes Hybrid … days a week in office) If you ve got strong .Net (C#) experience and skills in GitHub, APIs, Postman, Angular, AWS, BDD (SpecFlow), Docker, MS SQL or MongoDB we want to hear from you. Like what you see? Click apply and send us your CV today. More ❯
Milton Keynes, Buckinghamshire, South East, United Kingdom Hybrid / WFH Options
Hireful
with the support, tools, and flexibility to thrive. Role: Lead Software Developer, Senior .Net Developer, Software Engineering Manager, Senior Full Stack Developer, Lead .Net Developer, Lead Software Engineer, Senior C# Developer Salary: £65k - £75k base + Bonus Benefits: 5% pension, 25 days holiday, 2 wellbeing days, Christmas shutdown, private healthcare, life assurance, cinema tickets & more Location: Milton Keynes – Hybrid … days a week in office) If you've got strong .Net (C#) experience and skills in GitHub, APIs, Postman, Angular, AWS, BDD (SpecFlow), Docker, MS SQL or MongoDB — we want to hear from you. Like what you see? Click apply and send us your CV today. More ❯
helping government organizations communicate critical information - from health updates to policy changes - reaching thousands of users daily. What You'll DoBuild and scale high-performance applications using React, TypeScript & C# Shape architectural decisions in a microservices environment Work with cutting-edge tech including Docker and modern DevOps practices Collaborate with brilliant minds solving complex technical challenges What You Need5+ years … software development experience (SaaS preferred) Strong skills in React, JavaScript, TypeScript, C# Experience with microservices, containerization (Docker) Knowledge of SQL & NoSQL databases CI/CD pipeline experience What's In It For You?Clear career progression to Lead Developer roles Health insurance (year 2+) & pension Flexible working post-probation Continuous learning & mentorship opportunities Work on software that genuinely matters to More ❯
helping government organizations communicate critical information - from health updates to policy changes - reaching thousands of users daily. What You'll DoBuild and scale high-performance applications using React, TypeScript & C# Shape architectural decisions in a microservices environment Work with cutting-edge tech including Docker and modern DevOps practices Collaborate with brilliant minds solving complex technical challenges What You Need5+ years … software development experience (SaaS preferred) Strong skills in React, JavaScript, TypeScript, C# Experience with microservices, containerization (Docker) Knowledge of SQL & NoSQL databases CI/CD pipeline experience What's In It For You?Clear career progression to Lead Developer roles Health insurance (year 2+) & pension Flexible working post-probation Continuous learning & mentorship opportunities Work on software that genuinely matters to More ❯
to work with modern technologies, gain valuable experience, and grow your career in software engineering. The Role Collaborate on the development of our platform and products using .NET 8 C# and TypeScript Build modern, responsive React applications Work with SQL and NoSQL databases to manage and process data Gain exposure to infrastructure as code (IaC) and cloud services Contribute to … code following best practices Learn from and be mentored by experienced engineers Core Skills & Experience A passion for software development and eagerness to learn new technologies Some experience with C#/.NET, TypeScript/JavaScript, and React (through coursework, projects, or internships) Familiarity with databases (SQL and/or NoSQL) Interest in cloud and distributed architectures Basic understanding of version More ❯
to work with modern technologies, gain valuable experience, and grow your career in software engineering. The Role Collaborate on the development of our platform and products using .NET 8 C# and TypeScript Build modern, responsive React applications Work with SQL and NoSQL databases to manage and process data Gain exposure to infrastructure as code (IaC) and cloud services Contribute to … code following best practices Learn from and be mentored by experienced engineers Core Skills & Experience A passion for software development and eagerness to learn new technologies Some experience with C#/.NET, TypeScript/JavaScript, and React (through coursework, projects, or internships) Familiarity with databases (SQL and/or NoSQL) Interest in cloud and distributed architectures Basic understanding of version More ❯
Leeds, West Yorkshire, Yorkshire, United Kingdom Hybrid / WFH Options
WRK DIGITAL LTD
Senior Software Developer - Digital and Customer Experience Location: Leeds - Hybrid (UK-based) Level: Senior/Lead Developer Tech Stack: C# .NET | Azure | Blazor | Modern Front-End | DevOps | AI Tools Salary : Up to 80,000 + Benefits Are you a passionate and experienced developer who wants to make a real impact in an award-winning, innovation-driven environment? WRK digital are … and more secure innovative solutions. ?? About the Role: As a Senior Software Developer, you'll: Lead the design and development of scalable, high-performance applications using the Microsoft stack (C# .NET, Azure) Drive front-end development to deliver intuitive and visually engaging user experiences Mentor junior developers and provide technical leadership across the team Collaborate with product, design, and architecture … opportunity to step into a leadership role while staying hands-on with the code. ?? What We're Looking For: A Senior or Lead Software Developer with: Deep expertise in C# .NET and Azure Modern Front End Application Development with Blazor or React A strong focus on UI/UX, with a belief that great design elevates functionality A passion for More ❯
Warrington, Cheshire, England, United Kingdom Hybrid / WFH Options
Oscar Technology
Backend Developer - C# .NET/SQL/AWS - Warrington - £45,000 The Role An established and forward-thinking organisation is looking for a skilled Backend Developer to join their growing technology team. As the business continues to invest heavily in digital innovation, you'll play a key role in building and maintaining robust, scalable systems that keep operations and customer … systems, as well as working on greenfield projects from scratch, getting full ownership of the products. Requirements Minimum 3 years' experience in a Software Development position Strong proficiency in C# .NET Solid SQL Server skills (schema design, queries, optimisation) Experience with REST API design and integration Familiarity with version control (Git), agile workflows, automated testing, and CI/CD Desirable … developer who wants to build technology that powers a growing and respected organisation, then this is the role for you! Apply today and don't miss out! Backend Developer - C# .NET/SQL/AWS - Warrington - £45,000 Oscar Associates (UK) Limited is acting as an Employment Agency in relation to this vacancy. To understand more about what we do More ❯
Software Developer | Charity Sector | C#, SQL, ASP.NET | Scotland/Remote £35,000 - £40,000 Lend your expertise to a good cause! We are looking for a Software Developer with good knowledge of the Microsoft stack to support a leading, historic Charity in the Central Belt of Scotland. This role is an ideal position if you are immediately available, or eager … a Software Developer to join them in-house and work closely with the CEO. We are looking for a Developer skilled in: SQL, T-SQL, SQL Server 2012-present C# Entity Framework Classic ASP/ASP.NET/MVC/.NET Typical tasks and projects would involve: Designing and building an API to call information from a SQL Server registry of More ❯
Birmingham, West Midlands, United Kingdom Hybrid / WFH Options
Data Careers
project teams to translate business requirements into effective technical solutions. Maintain and evolve development standards, documentation, and best practice processes. Contribute hands-on to coding and development activities in C#, TypeScript, and Power Platform. About You You're a seasoned Dynamics 365 Developer who enjoys leading by example - technically strong, collaborative, and passionate about continuous improvement. You'll bring: Strong … hands-on experience developing and customising solutions using C#, TypeScript , and Power Platform (Power Pages, Power Apps, Power Automate). Proven experience managing or mentoring developers in an Agile, DevOps environment. Experience with Azure DevOps , CI/CD pipelines, and test-driven development. Knowledge of data migration, integration , and service-oriented architecture. Excellent communication skills, with the ability to collaborate More ❯
role suited to someone with a passion for software craftsmanship and continuous improvement. Key Responsibilities Enhance features and functionality of core products Design and implement scalable backend systems using C# (.NET 5+ preferred) Write clean, maintainable, and testable code using TDD/BDD principles Create and maintain RESTful and GraphQL APIs Collaborate with POs, BAs, and stakeholders to define solutions … Mentor junior developers and promote best practices Drive improvements in development processes and tools What You Bring 5+ years of backend development experience Expertise in C#, .NET (preferably .NET 6+), and SQL Server Deep understanding of SOLID and OOP principles Skilled in Git, Unit Testing (NUnit), and API development Familiarity with CI/CD pipelines and agile methodologies Strong communication More ❯
Front end tools can be either web dashboards or Excel tools backed by robust libraries or web services. Design and build data solutions and ETLs (using SQL, no-SQL, C#, and Python) for market data, quant analytics and alpha generation. 3-5 years of relevant experience Bachelor's degree, preferably in a quantitative degree Excellent quantitative reasoning and software design … with the highest degree of ethics and integrity Nice to have Knowledge of financial instruments & data: FX, Futures, Interest Rates derivatives, Options Proficiency in another programming language such as C#, Java or C++ Web development skills Experience with AWS More ❯
Software Developer Charity Sector C#, SQL, ASP.NET Scotland/Remote £35,000 - £40,000 Lend your expertise to a good cause! We are looking for a Software Developer with good knowledge of the Microsoft stack to support a leading, historic Charity in the Central Belt of Scotland. This role is an ideal position if you are immediately available, or eager … a Software Developer to join them in-house and work closely with the CEO. We are looking for a Developer skilled in: SQL, T-SQL, SQL Server 2012-present C# Entity Framework Classic ASP/ASP.NET/MVC/.NET Typical tasks and projects would involve: Designing and building an API to call information from a SQL Server registry of More ❯
Do you have a couple of years commercial coding experience under your belt with Python, Java, .NET/C#, C++ or similar? Are you now looking to take those skills forward, working on AI software application development in Python? If yes, we have a good new home for you to continue your software engineering career, at a successful, AI focused … not required; as we believe that a good Software Engineer can turn their hand to any language, given support & time. Our last 2 hires have been primarily experienced in C# (.Net), for example. If all the above sounds good to you, please hit apply, or get in touch for a conversation. I hope to hear from you soon More ❯
Do you have a couple of years commercial coding experience under your belt with Python, Java, .NET/C#, C++ or similar? Are you now looking to take those skills forward, working on AI software application development in Python? If yes, we have a good new home for you to continue your software engineering career, at a successful, AI focused … not required; as we believe that a good Software Engineer can turn their hand to any language, given support & time. Our last 2 hires have been primarily experienced in C# (.Net), for example. If all the above sounds good to you, please hit apply, or get in touch for a conversation. I hope to hear from you soon More ❯
Leeds, West Yorkshire, Yorkshire, United Kingdom Hybrid / WFH Options
WRK DIGITAL LTD
architecture, youll work on meaningful, business-critical projects that are transforming how legal services are delivered. What youll be doing: - Designing and developing scalable applications using the Microsoft stack (C# .NET, Azure) - Creating seamless, engaging user interfaces with a strong focus on usability and design - Collaborating with cross-functional teams to shape architecture and implement DevOps practices - Staying hands-on … clearly to both technical and non-technical audiences What were looking for: ? A creative problem-solver with strong engineering skills and a passion for user experience ? Solid experience with C# .NET and Azure cloud technologies ? A commitment to clean, maintainable code and agile development ? Strong communication skills and a collaborative mindset ? Curiosity about emerging tech (including AI tools like GitHub More ❯
Leeds / Work from home, West Yorkshire, United Kingdom Hybrid / WFH Options
hireful
Do you have a couple of years commercial coding experience under your belt with Python, Java, .NET/C#, C++ or similar? Are you now looking to take those skills forward, working on AI software application development in Python? If yes, we have a good new home for you to continue your software engineering career, at a successful, AI focused … not required; as we believe that a good Software Engineer can turn their hand to any language, given support & time. Our last 2 hires have been primarily experienced in C# (.Net), for example. If all the above sounds good to you, please hit apply, or get in touch for a conversation. I hope to hear from you soon More ❯
Employment Type: Permanent
Salary: £35000 - £45000/annum Up to £45K basic + Bonus + Benefits
Security Clearance to work on National Security projects. WE NEED THE SOFTWARE DEVELOPER TO HAVE....* Enhanced DV Security Clearance.* Experience one or multiple modern programming languages (Java, Python, C++, C#).* Experience working with cloud technologies (preferably AWS)* Experience with Microservices. TO BE CONSIDERED....Please either apply by clicking online or emailing me directly to For further information please call me … just search Laura Jackson. I look forward to hearing from you. SOFTWARE DEVELOPER - EDV CLEAREDKEY SKILLS:SOFTWARE ENGINEER/DEVOPS/FULL STACK/JAVA/PYTHON/C C#/MICROSERVICES/VERSION CONTROL/UNIT TESTING/INTEGRATION TESTING/AWS/DV CLEARED/DV CLEARANCE/DEVELOPPED VETTING/DEVELOPED VETTED/DEEP VETTING/DEEP More ❯
South East London, London, United Kingdom Hybrid / WFH Options
Certain Advantage
commodities trading solutions. Leverage strong proficiency in Python, including use of numerical and scientific libraries such as Pandas, NumPy, SciPy etc. Utilize a second strongly typed programming language (e.g., C#, C++, Rust, or Java) as needed. Implement application architecture and DevOps best practices, including Infrastructure as code, Kubernetes, Docker, and automation testing frameworks. Apply software design patterns to ensure robust … especially within trading, finance, or quantitative domains. Proficiency with major Python numerical libraries (e.g., pandas, numpy, scipy, stats). Experience with at least one additional strongly typed programming language (C#, C++, Rust, Java, etc.). Strong background in Azure cloud application development, including security, observability, storage, and database resources. Solid understanding of data engineering tools and technologies (Databricks, PySpark, Lakehouses More ❯
Southampton, Hampshire, South East, United Kingdom Hybrid / WFH Options
Spectrum It Recruitment Limited
a forward-thinking technology business, working on a diverse range of bespoke applications, APIs, and databases that underpin both customer-facing products and internal systems. Senior Software Engineer - Delphi & C# Location: Hybrid (office in Southampton, Hampshire) Salary: Circa £55,000 - £56,000 + up to 15% discretionary bonus Benefits: Bonus scheme, pension, healthcare, EV car scheme, volunteering day, career progression … problem-solver, with the ability to work across both legacy and modern technology. To succeed, you will have: 5+ years' experience in software engineering. Strong expertise in Delphi and C# . Experience with APIs, Oracle, SQL, Git, Agile/Scrum, and cloud platforms (Azure/AWS). The ability to act as a technical lead and mentor within a team. More ❯
portsmouth, hampshire, south east england, united kingdom Hybrid / WFH Options
Spectrum IT Recruitment
a forward-thinking technology business, working on a diverse range of bespoke applications, APIs, and databases that underpin both customer-facing products and internal systems. Senior Software Engineer - Delphi & C# Location: Hybrid (office in Southampton, Hampshire) Salary: Circa £55,000 - £56,000 + up to 15% discretionary bonus Benefits: Bonus scheme, pension, healthcare, EV car scheme, volunteering day, career progression … problem-solver, with the ability to work across both legacy and modern technology. To succeed, you will have: 5+ years' experience in software engineering. Strong expertise in Delphi and C# . Experience with APIs, Oracle, SQL, Git, Agile/Scrum, and cloud platforms (Azure/AWS). The ability to act as a technical lead and mentor within a team. More ❯
Start Date: Immediate/ASAP Rate: £500 per day (Inside IR35) Location: Dorset : on-site ?? Responsibilities ??? Design, code, and test microservice-based solutions on Android & .NET platforms (primarily in C# ). ?? Collaborate in a Scrum team , actively participating in all Agile ceremonies. ?? Coordinate with Delivery Lead & management to report progress and provide technical summaries. ?? Work with multiple Agile teams towards … lead software designs , presenting clear solutions and guiding developers. ?? Review code & resolve issues across the project lifecycle. ?? Support technical sales & effort estimation for new initiatives. ? Essential Experience ?? 5+ years C#/.NET development (including Android). ?? 5+ years REST/RESTful API development . ?? Strong OOP, UML, Design Patterns, SOLID principles. ?? 5+ years in Agile (Scrum, Kanban, agile mindset) . More ❯