126 to 149 of 149 C# Jobs in the Thames Valley

Lead C# Engineer - Core Trading Systems - Global Multi-Asset Investment Firm - London - Up to £400k TC

Hiring Organisation
Mondrian Alpha
Location
Slough, Berkshire, UK
Employment Type
Full-time
Lead C# Engineer – Core Trading Systems - Global Multi-Asset Investment Firm - London - Up to £400k TC Our client is a globally recognized, multi-asset investment firm managing over $25 billion in assets on behalf of a major philanthropic foundation and select institutional partners. Operating as both a family office … high-performance applications. Contribute to the modernization of legacy systems by migrating infrastructure to AWS and Snowflake, improving scalability and maintainability. Develop solutions using C#, Python, SQL Server, and cloud-native tools, alongside modern UI frameworks such as React or Angular. Provide ongoing production support for mission-critical systems during ...

Software Engineer - £60k ID45265

Hiring Organisation
Humand Talent
Location
Oxfordshire, England, United Kingdom
skilled C++ or C# developer with a passion for high-performance systems? Keen to work on cutting-edge engineering challenges that combine software, automation, and advanced hardware? Ready to help build the digital backbone of tomorrow’s aerospace innovations? Our client is seeking a driven Software Engineer to play … problem-solving are part of the daily rhythm. About You You’ll be working on... A high-tech design platform developed in C C# and Python. Cloud-based infrastructure integrating advanced simulation and design tools. Projects that interface with mechanical and thermal analysis tools like FEA and CFD. Opportunities ...

Tester

Hiring Organisation
Proactive Appointments
Location
Wokingham, Berkshire, England, United Kingdom
Employment Type
Full-Time
Salary
£32,000 - £35,000 per annum
Mobile and Tablet Strong Testing Experience in Non-Functional testing Experience of working with Test Management tools like JIRA, TFS, ALM Familiar with C# .NET, HTML, SQL & Java Good Experience of working with SQL and SQL Management Studio. Excellent knowledge in Postman & SOAP UI for API Testing Must be able … maintaining automation frameworks and scripts in line with coding standards will be an added advantage Demonstrated experience writing test scripts from scratch in C# .net will be an added advantage Experience working with Selenium Webdriver Previous work experience within the logistics industry ISTQB Advance level Test Analyst or equivalent certification ...

Senior C# Developer - Head of Core Platforms | Hedge Fund | London

Hiring Organisation
Undisclosed
Location
Slough, Berkshire, UK
Employment Type
Full-time
will develop and consolidate systems, write software, guide a team of developers, and take ownership of several critical platforms. This includes an in‐house C# PnL and Risk system that performs real‐time portfolio valuation, alongside other components that will be integrated into a cohesive, modernised core platform. You will … date) accounting reconciliations Particular interest in candidates with Fixed Income and Rates experience Technical Skills Strong computer science fundamentals Hands‐on development experience in: C# and .NET (essential for this role) Python within quant or data environments The client will also consider exceptional engineers from other OOP backgrounds such ...

C# Senior Software Engineer (VP) - Up to £130k + Bonus

Hiring Organisation
Hunter Bond
Location
Slough, Berkshire, UK
Employment Type
Full-time
title: C# Senior Software Engineer (VP) Client: Investment Firm Experience Level: 5+ years' Salary: - Up to £130k + Bonus Location: London (Hybrid) An elite investment client are searching for Senior C# Developers to join a group of the highest-regarded talent around! Role This is to build … latest frameworks within .Net Skills/Experience Proven experience working as a Software Engineer within the financial services domain Knowledge of C# .Net core Degree in Computer Science/Engineering is preferred! Experience with any web technologies including WPF or React is sought after ...

Dotnet Developer

Hiring Organisation
Harrington Starr
Location
Slough, Berkshire, UK
Employment Type
Full-time
seeking an experienced .NET Developer to join our Business Intelligence IT team. You will develop and support SMBC BI business applications using C# and MS .NET Framework, working across SQL Server and Oracle databases. This role involves both new development and maintenance of existing applications, ensuring stability and compliance with … change management procedures. Key Responsibilities Develop and maintain C#/.NET applications for BI systems. Analyse business requirements and design technical solutions. Write and optimise T-SQL and PL/SQL scripts for data analysis. Collaborate with DBAs and infrastructure teams in London and New York. Support production environments, troubleshoot ...

.Net Engineer

Hiring Organisation
numi
Location
Slough, Berkshire, UK
Employment Type
Full-time
involved in challenging, complex development for industry leading companies, as well as smaller start up projects Centered on a tech stack that includes C# .NET, React AWS, and event-driven microservices, this position is tailored for engineers ready to thrive in modern cloud-based ecosystems. As an Engineer you will … growth and excellence. Ideal candidates hold a Bachelor's or Master's degree in Computer Science, Engineering, or a related field. A .NET, C# and backend or full-stack development is essential, complemented by strong problem-solving skills, an agile mindset, and excellent communication. What You'll Get: Competitive salary ...

Platform Engineering Manager

Hiring Organisation
Cocentric
Location
Slough, Berkshire, UK
Employment Type
Full-time
BRING Strong experience with Service Fabric and Kubernetes Proven experience architecting and scaling B2B SaaS platforms Strong full-stack technical expertise – especially across C#, JavaScript, and React Experience integrating with APIs and identity platforms (e.g. Microsoft Entra ID/Azure AD) Solid understanding of cloud infrastructure – ideally Azure and Service … hands-on approach to problem-solving and decision-making Background in IAM or SSO is a bonus OUR TECH STACK Frontend: React, JavaScript Backend: C#, .Net, Azure Service Fabric Infrastructure: Azure, Service Fabric, Cosmos DB WHY COCENTRIC Be a key part of a product that's transforming how the frontline ...

Contract Software Engineer

Hiring Organisation
Morson Edge
Location
High Wycombe, Buckinghamshire, UK
Employment Type
Full-time
/d - Outside IR35 - Fully Remote Great opportunity for an experience Contractor to join an eCommerce client as they migrate a legacy C# product to modern Typescript. The ideal candidate will have worked with all listed technologies below and have past experience of migrating legacy systems. Key Skills: Typescript, Node … Nest.js) React/Next.js C#/.Net (legacy) Postgres AWS The contract will be an initial 6 months with a very high likelihood of extension and is outside IR35. If you're interested in the opportunity please apply via the link and I'll be in touch ASAP Please note ...

Contract Software Engineer

Hiring Organisation
Morson Edge
Location
Reading, Berkshire, UK
Employment Type
Full-time
/d - Outside IR35 - Fully Remote Great opportunity for an experience Contractor to join an eCommerce client as they migrate a legacy C# product to modern Typescript. The ideal candidate will have worked with all listed technologies below and have past experience of migrating legacy systems. Key Skills: Typescript, Node … Nest.js) React/Next.js C#/.Net (legacy) Postgres AWS The contract will be an initial 6 months with a very high likelihood of extension and is outside IR35. If you're interested in the opportunity please apply via the link and I'll be in touch ASAP Please note ...

Contract Software Engineer

Hiring Organisation
Morson Edge
Location
Slough, Berkshire, UK
Employment Type
Full-time
/d - Outside IR35 - Fully Remote Great opportunity for an experience Contractor to join an eCommerce client as they migrate a legacy C# product to modern Typescript. The ideal candidate will have worked with all listed technologies below and have past experience of migrating legacy systems. Key Skills: Typescript, Node … Nest.js) React/Next.js C#/.Net (legacy) Postgres AWS The contract will be an initial 6 months with a very high likelihood of extension and is outside IR35. If you're interested in the opportunity please apply via the link and I'll be in touch ASAP Please note ...

Contract Software Engineer

Hiring Organisation
Morson Edge
Location
Milton Keynes, Buckinghamshire, UK
Employment Type
Full-time
/d - Outside IR35 - Fully Remote Great opportunity for an experience Contractor to join an eCommerce client as they migrate a legacy C# product to modern Typescript. The ideal candidate will have worked with all listed technologies below and have past experience of migrating legacy systems. Key Skills: Typescript, Node … Nest.js) React/Next.js C#/.Net (legacy) Postgres AWS The contract will be an initial 6 months with a very high likelihood of extension and is outside IR35. If you're interested in the opportunity please apply via the link and I'll be in touch ASAP Please note ...

Senior .Net Integration Developer

Hiring Organisation
Rise Technical Recruitment Limited
Location
Maidenhead, Berkshire, South East, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£70,000
site & 2 from home) £50,000 - £70,000 + Holiday + Pension + Training + Private Health Plan Excellent opportunity for an experienced C# .NET looking to join a stock market listed business, renowned for their supportive culture and award-winning training opportunities. This company are a well-established, international … work across financial, telematics, and mapping APIs, ensuring solutions are secure, scalable, and aligned with modern cloud architecture. You will use your expertise in C#/.NET and modern APIs (REST, WebAPI, JSON, OAuth2) to build fault-tolerant, event-driven integrations, support customers and partners with API usage, and deliver ...

C# Engineer - Up to £140,000 + Bonus + Package

Hiring Organisation
Hunter Bond
Location
Slough, Berkshire, UK
Employment Type
Full-time
Leading Engineering Team at an Elite Financial Institution A top-tier FinTech firm is growing its elite engineering team and is seeking exceptional C# Engineers to help drive innovation in a fast-paced, technology-first environment. What Makes This Opportunity Stand Out? Engineering-Driven Culture – Collaborate with top minds from … London-based office. Your Role Design, build, and optimize high-performance, low-latency systems for real-time financial applications. Develop scalable, efficient software using C#/.NET, with hands-on involvement in architecture and system design. Partner with Front Office, DevOps, and Quant teams to deliver robust solutions. Explore advanced ...

Senior Software Engineer

Hiring Organisation
Platform Recruitment Limited
Location
Oxford, Oxfordshire, South East, United Kingdom
Employment Type
Permanent
Salary
£65,000
Senior Design Engineer Development of real-time machine control software in C#/.NET, integrating lasers, motion control, robotics, and industrial systems. Location: Oxfordshire (On-site) Contract: Full-time Salary: Competitive Were looking for a Software Software Engineer to help build and maintain high-performance software for advanced industrial systems. … Responsibilities Build and maintain C#/.NET software (operator tools + backend services) Develop control software integrating hardware subsystems (automation, sensors, motion) Focus on performance and reliability (multithreading, low latency) Integrate with industrial systems via EtherCAT/OPC UA/Modbus (or similar) Support testing, commissioning/deployment, and write ...

VP of Engineering (Spatial Computing)

Hiring Organisation
Imvizar
Location
Slough, Berkshire, UK
Employment Type
Full-time
design. Strong background in architecting and building scalable platforms, ideally in no-code/low-code environments. Proficiency in programming languages such as C++, C#, Python, or JavaScript (WebGL, Three.js, etc.). Deep understanding of networking, cloud computing, and backend systems that support immersive experiences. Experience in Unity, C# ...

Software Engineer - Aerospace - Oxfordshire

Hiring Organisation
Bond Williams Limited
Location
Kidlington, Oxfordshire, South East, United Kingdom
Employment Type
Permanent
Engineer to develop this platform. Working alongside Aerothermal Designers and Mechanical Engineers, you'll productionize internal code, wrap commercial simulation tools in C++/C# modules, and integrate everything into automated cloud-based workflows. Key requirements for Software Engineer: A high calibre degree in Engineering, Computer Science or Physics from … University Excellent technical skills with C++ or C#, and Python with several years demonstrable commercial industry experience Natural problem-solver with eagerness to learn Self-motivated and organized, capable of independently managing complex projects Along with highly interesting and technical work, a clear career progression path and a fantastic culture ...

Full-Stack Engineer | AI Startup | London - £60k-£75k

Hiring Organisation
Venchr
Location
Slough, Berkshire, UK
Employment Type
Full-time
their first hires — someone ready to shape the platform from the ground up. What You'll Do Build APIs and backend services in C#/.NET 8+ Develop frontend experiences using Next.js and TypeScript Work in a modern Azure environment (Functions, Container Apps, Event Grid, Service Bus) Influence architecture, performance … iteratively and continuously Experiment with AI to solve problems creatively Who You Are 3+ years as a full-stack or backend engineer Strong in C#/.NET and Next.js/TypeScript Experienced with serverless or containerized applications (Azure experience is a plus) Comfortable working with autonomy, ownership, and a fast ...

Junior Software Engineer - up to £50,000 - ID44703

Hiring Organisation
Humand Talent
Location
Oxford, Oxfordshire, UK
Employment Type
Full-time
robotics technology, including embedded systems, all within a Linux environment. Hands on skills in one of the following programming languages is preferable: C, C++, C#, or Go. Knowledge of multiple languages is a significant advantage, and familiarity with scripting languages like Python is a plus. What We're Looking …/Unix/BSD environments. An eagerness to learn and adapt to new challenges. Proficiency in at least one of the following: C, C++, C#, or Go, with a willingness to expand your skillset. Familiarity with scripting languages like Python. An exposure of version control systems like Git and experience ...

Junior Software Engineer - up to £50,000 - ID44703

Hiring Organisation
Humand Talent
Location
Oxfordshire, England, United Kingdom
robotics technology, including embedded systems, all within a Linux environment. Hands on skills in one of the following programming languages is preferable: C, C++, C#, or Go. Knowledge of multiple languages is a significant advantage, and familiarity with scripting languages like Python is a plus. What We're Looking …/Unix/BSD environments. An eagerness to learn and adapt to new challenges. Proficiency in at least one of the following: C, C++, C#, or Go, with a willingness to expand your skillset. Familiarity with scripting languages like Python. An exposure of version control systems like Git and experience ...

Back End Integration Engineer

Hiring Organisation
Primus Connect
Location
Slough, Berkshire, UK
Employment Type
Full-time
reusable and scalable integration assets to improve delivery speed and consistency Produce clean, secure, and maintainable backend code using modern development languages such as C# or Python Support automated build, test, and deployment processes, including peer code reviews Deliver work within iterative, agile-based development cycles Assist with incident investigation … messaging, event driven, orchestration) Experience with cloud integration services such as Azure API Management, Service Bus, Event Grid, Functions Proficiency in back end development (C# or Python) with a strong focus on secure coding Experience with CI/CD, automated testing, and modern engineering practices Strong problem solving skills ...

C# Developer - Up to £100k + Bonus + Package

Hiring Organisation
Hunter Bond
Location
Slough, Berkshire, UK
Employment Type
Full-time
Title: C# Developer - Leading Trading Firm - Up to £100k + Bonus + Package Client: Elite FinTech Firm Experience Level: 2+ years' Salary: Up to £100k + Bonus + Package Location: London (Flexible Working) An elite fintech firm are searching for C# Developers to join a group of the highest-regarded … high performance tools - utilising cutting edge technology across a diverse range of greenfield projects Tech driven environment - most recent versions/frameworks of C# used daily Skills/Experience Strong knowledge of C# STEM degree - strong computer science fundamentals (Preferred ...

Senior C# Engineer - Risk Technology (Global Hedge Fund)

Hiring Organisation
Selby Jennings
Location
Slough, Berkshire, UK
Employment Type
Full-time
Senior C# Engineer - Risk Technology (Global Hedge Fund) Location: London (4 days on-site) About the Firm Our client is a leading global multi-strategy hedge fund, investing across equities, commodities, and systematic strategies. We are seeking a Senior C# Engineer to design and build high-performance risk analytics platforms … with technologists and risk managers to deliver robust, maintainable software. What We're Looking For 10-20 years of software development experience. Expert in C#/.NET 8+ with strong system design skills. Professional experience in risk modeling and analytics across equities; experience with MSCI RiskMetrics or similar systems ...

Test Lead

Hiring Organisation
La Fosse
Location
Slough, Berkshire, UK
Employment Type
Full-time
Test Lead - £700-£750 per day inside IR35 - London (hybrid 3 days per week in the office) - C# experience Please note: This role requires candidates to be able to commute into the London office 3 days per week. La Fosse have partnered with a global organisation to recruit a Test … Lead into an established team. The SDET will own the automation strategy, develop and maintain test scripts using C# and Selenium, implement behaviour-driven testing with a BDD framework, and ensure comprehensive test coverage aligned with business requirements Key requirements: Strong C# skills for building automated tests Experience using Selenium ...