151 to 175 of 196 C# Jobs in Berkshire

Lead C# Engineer – Core Trading Systems - Global Multi-Asset Investment Firm - London - Up to £500k 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 and institutional-grade asset manager, the firm combines the long-term … teams to deliver user-centric, 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 trading hours and end-of … of a unified, scalable trade platform. Ideal Candidate Profile 5–10 years of experience developing and supporting Order Management (OMS) and Execution Management Systems (EMS). Strong proficiency in C# or Python, with advanced SQL and database design expertise. Hands-on experience with AWS, Snowflake, and modern software architecture. Solid grasp of data structures, concurrency, and memory management. Experience developing More ❯

to architectural decisions that directly impact performance and reliability What we’re looking for A few years commercial experience in software engineering with strong experience in Python, Java, or C# Proven track record of performance tuning in large-scale, distributed systems Expertise in profiling tools, memory management, and debugging complex performance issues Strong database optimisation skills (Postgres, SQL Server, or … to shape system architecture and mentor future engineering leaders Flexible Hybrid working in Central London up to £85,000 basic plus market leading bonus structures Tech Stack: Python, Java, C#, Postgres, Kubernetes, Docker, AWS, Azure, k6, JMeter, Gatling If you’re passionate about pushing the boundaries of performance engineering and building software that scales effortlessly, we’d love to hear More ❯

intelligence platform - spanning OBD diagnostics, API-based vehicle integrations, and real-time energy data streams. The Role We’re looking for a skilled Backend Developer with strong experience in C# and the .NET ecosystem to help us scale and evolve our core data and API infrastructure. You’ll play a central role in designing, building, and optimising services that power … scalability, and data integrity. Help evolve our internal tools and services to support ClearWatt’s growing product suite. What We’re Looking For 2+ years of professional experience with C# and .NET Core . Experience building REST APIs or microservices at scale. Familiarity with cloud-native design and Azure services . Understanding of async programming, dependency injection, and distributed systems. More ❯

C#.Net, Data Driven | Fintech – Greenfield Event-Driven Data build | 12 Month contract roles | £700/Day OUTside IR35 C#.Net Core, engineers are needed for a new team in a Fintech client. The client are embarking on a transition from off More ❯

Senior C# Engineer | Renewable Energy Trading | £600-700 OUTside IR35 | 6 Months rolling | Hybrid (London) A Senior C# Engineer is required for a Renewable Energy Trading company that’s leading the charge in sustainable energy production, optimisation, and trading technology. With the UK committing over £24Bn to Renewable Energy , this is an opportunity to play a key part in the … the boundaries of technology to accelerate the shift to clean energy. 💰 £600–700 per day | OUTside IR35 📑 6-month rolling contract 📍 Hybrid – 2-3 days per week, London ⚡ Senior C# Engineer - Energy Trading experience required As a Senior C# Engineer , you’ll be working on the design and build of real-time trading and analytics platforms , leveraging microservices architecture and … ll collaborate closely with traders, data engineers, and DevOps specialists to deliver event-driven solutions that power trading decisions and optimise market operations. Experience required: Strong commercial experience with C# and .NET Core Proven experience building microservices-based architectures Strong knowledge of Azure Cloud Services (Functions, Service Bus, Event Hub, Kubernetes, etc.) Experience with event-driven/message-based systems More ❯

Now Hiring: Junior C# Quantitative Developer | Hedge Fund | London (Hybrid) Are you a talented C# developer with a passion for finance, data, and quantitative problem-solving ? Join a leading hedge fund where technology and mathematics drive every decision. We’re looking for a Junior Quantitative Developer to work alongside experienced quants, traders, and engineers — building and optimizing the systems that … power our trading strategies. 💼 What You’ll Do Develop and maintain high-performance C# applications used in research, risk, and trading Collaborate with quants to implement pricing models and backtesting frameworks Enhance data processing pipelines and contribute to performance optimization Gain exposure to financial markets, trading systems, and quantitative research 🧠 What We’re Looking For Strong programming skills in C# More ❯

Senior C# Developer – Endur Transition | Commodities Trading House | £120k + Bonus + Benefits | 2-3 Days Hybrid/Week in London A hands-on Senior C# Developer is required for a global trading company operating across energy, chemicals, metals, machinery, infrastructure, food, and financial services. With a strong footprint in energy trading , this client is highly active in the procurement … oil, natural gas, LNG, and renewables . They are looking to bring someone on who is keen on learning and picking up on Endur for their ETRM systems. This C# Developer role will focus on building, enhancing, and optimising the company’s Energy Trading and Risk Management (ETRM) platform. You’ll be designing and implementing new solutions within Endur, driving … looking for a developer who can deliver immediate impact — coding, configuring, and optimising Endur to ensure scalability and performance when upgrading them from version 18 to 25. As a C# Developer focusing on Endur, you’ll work closely with business users, analysts, and other technologists to deliver solutions across front, middle, and back office , particularly around pricing, risk, and P More ❯

V19-V23 preferred), as well as API design and development fundamentals and with API testing using tools such as Swagger Good SQL/Sybase skills; building modern applications with C# Strong hands-on development experience with: AVS, OpenJVS, Open Components, Java, SQL, C#, Python Connex Gateways for trade booking and market data integration Real-Time Position Engine (RTPE) and Automated More ❯

Our Investment Banking client is looking for a highly skilled C# Fullstack Developer to join their London team in a permanent capacity. Skills required: Key Responsibilities: Collaborate with middle and back office teams to understand requirements and deliver robust technical solutions. Develop and maintain fullstack applications using modern technologies. Contribute to DevOps processes and CI/CD pipelines. Work with … large data models and multithreaded systems. Essential Skills: Strong proficiency in C# and backend development. Frontend experience with Angular and AG Grid . Solid understanding of SQL Server and database design. Familiarity with Jenkins or other DevOps tools. Ability to build strong relationships with stakeholders and communicate technical concepts clearly. Desirable: Experience in PnL systems , multithreading , or large data models More ❯

Senior Software Engineer Key Technologies: C#, .NET, React, AWS, Docker, Kubernetes City of London, United Kingdom Perm Role: £80,000 - £120,000 Harrington Starr has partnered with a Global Financial Services Vendor and they are looking for a Senior C#, .NET Software Engineer to join their growing team! This role provides the perfect opportunity to launch your career in a … Pension scheme. Hybrid working in Central London. Excellent salary base of up to £120,000 based on experience. Key skills, experience and qualifications required: Excellent knowledge and experience with C#, .NET and React.. Experience with cloud technology – specifically AWS. Knowledge of TDD/BDD. Excellent communication skills. Unrestricted right to work in the UK. This role offers hybrid working, with … an office location based in the City of London. This role will suit a Senior Software Engineer, with expert C#, .NET experience and commercial use of React having a direct impact from the get-go. Apply below and if you have any questions, please contact me via LinkedIn or email – ollie.bluck@harringtonstarr.com. More ❯

Job Title: C# Software Developer Client: Elite Quant Trading Firm Salary: Up to £120K Base + Exceptional Bonus Location: London (Hybrid) What’s on offer: Cutting-edge technology, direct front-office exposure, and a highly technical environment We’re working with a leading quant trading firm that’s looking to bring top-tier C# Software Engineers into their world-class More ❯

systems communicate, scale, and deliver value across the business. The Role You’ll be responsible for designing and developing high-performance integrations that connect core systems and partners, using C#, Python, and Azure cloud technologies . This is a hands-on engineering role that also offers the opportunity to influence architecture, best practices, and technology direction. What You’ll Be … Doing Designing, building, and maintaining high-throughput, reliable integration components using C# and Python Developing and optimising SQL interactions that underpin APIs and message-driven workflows Implementing asynchronous messaging via Azure Service Bus (or similar) to decouple systems and ensure scalability and resilience Building workflow automations with Azure Logic Apps to orchestrate processes and connect enterprise systems Managing API exposure … long-term maintainability Championing best practices around API versioning, secure messaging, error handling, monitoring, and CI/CD automation What We’re Looking For Strong hands-on experience with C# and Python in production settings Proven proficiency in SQL – from database design to performance tuning Practical experience with Azure Service Bus (queues, topics) or comparable enterprise messaging technologies Experience using More ❯

Software Developer - C# Software Developer required by a leading Cloud Technology company based in Bracknell. The company are working on cutting-edge technology including AI and propensity modelling. This is a brand-new position due to growth and will join a well-established, high calibre development team. The company operate on a hybrid model which involves 3 days in the … and 2 days from home. Essential experience: Degree in Computer Science or other STEM subject ideally from a Russell Group University 3+ years' experience in a software development role C# SQL Server Source control, ideally Git Experience working within an Agile environment Any experience in the following would be advantageous: .NET 5/6 JavaScript, TypeScript and frameworks such as More ❯

industry SaaS platform. You will be 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 design scalable systems, write … engineers to cultivate a culture of 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 and benefits package. Hybrid More ❯

to continuous improvement WHAT YOU’LL 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 Fabric A collaborative mindset … and client delivery A pragmatic, 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 workforce connects Help shape the More ❯

Managers. Title: Test Automation Engineer - QA Company: Consultancy - Financial Location: London Hybrid (often 3 days a week in office) Salary: £50,000-£65,000 + benefits Tech essentials : Backend (C#/Java/Python) SQL, Specflow/BDD Nice to have: CI/CD pipes, GitHub Actions, YAML, Powershell Interview process: 1 stage remote video interview Why should you be … endless and they are active looking for future leaders Why they’ll be interested in you - You have solid Programming experience, with a keen interest in Software Quality & Testing C# or Python or Java knowledge needed You probably have a relevant degree at 2:1 level or above You may have 1-3 years commercial experience, but they're open More ❯

ensuring issues are resolved efficiently. Collaborate closely with the development team to rapidly identify, report, and fix bugs, improving product reliability and user satisfaction. Contribute to feature development using C#, Angular, and SQL, enhancing product performance and functionality. Leverage AI-powered tools to streamline support, automate repetitive tasks, and boost team efficiency. Create clear, reusable documentation for processes, common solutions … explain technical concepts to both technical and non-technical users. Comfortable working independently and as part of a collaborative team in a fast-paced environment. Hands-on experience with C#, Angular, and SQL, with a willingness to deepen expertise. Familiarity with version control systems (Git) and modern development practices. Desirable Skills & Experience Curiosity about or experience with AI-powered development More ❯

Lead Cloud Engineer Hybrid Working – London – 2 days a week on site. Financial Services Lorien's leading banking client is looking for a Lead Cloud Engineer to lead their engineering teams on a long-term Infrastructure Modernisation Programme. You’ll More ❯

day brings a new challenge, a new skill to learn, and the chance to see your work make a real difference. What You’ll Be Doing Developing solutions in C# (and occasionally Dart and other languages) Designing user-friendly interfaces for technical operators and engineers Creating tools for real-time monitoring, control, and experimentation Collaborating closely with experts in hardware … excited by the crossover of software and hardware, and who thrives in a collaborative environment. You’ll fit well if you bring: 2+ years of professional development experience Strong C# skills (extra kudos if you’ve touched other languages) Experience working with Git or similar tools A problem-solving mindset and a methodical approach to debugging Good communication and a More ❯

day brings a new challenge, a new skill to learn, and the chance to see your work make a real difference. What You’ll Be Doing Developing solutions in C# (and occasionally Dart and other languages) Designing user-friendly interfaces for technical operators and engineers Creating tools for real-time monitoring, control, and experimentation Collaborating closely with experts in hardware … excited by the crossover of software and hardware, and who thrives in a collaborative environment. You’ll fit well if you bring: 2+ years of professional development experience Strong C# skills (extra kudos if you’ve touched other languages) Experience working with Git or similar tools A problem-solving mindset and a methodical approach to debugging Good communication and a More ❯

Looking to excel your career in a start-up environment? C# Developer – VC-backed Cloud Security 💰 Salary up to £120k + equity 📍 London 5 days in office 🌎 Visa sponsorship available We have recently partnered with a rapidly growing VC-backed startup who develop technology to identify and minimize the effect of security incidents, with the aim of cutting response times … to minutes. Their solution is built for rapid deployment and ease of use, enabling organisations to handle threats far more effectively. They are now on the hunt for a C# Developer to work on the system that platform processes billions of events every week, powered by modern cloud infrastructure and innovative methods. 👀 Experience required as a C# Developer: Russell Group … university 1st Class Degree in Computer Science (or related – Maths, Physics, Engineering) 2-6 years experience in C# (also open to Python & Go engineers) Strong computer science fundamentals End-to-end project experience (from design, to build, to deployment) 💡 What you’ll do: Write clean, scalable code in C# Drive innovation using AWS and GCP Build and scale platform capabilities More ❯

Title: C#/.NET Developer Client: Elite Buy-Side Fund Salary: Up to £70,000 + Bonus + Benefits Location: London (Hybrid) The Opportunity: Seeking a Junior C#/.NET Developer to join their high-performing engineering team. This is an exceptional opportunity to work alongside experienced technologists and investment professionals building mission-critical systems that drive trading, research, and … technologies, machine learning and cutting edge tools to advance competitive edge. Who You Are: Recent graduate with stellar academics and 1-5 years of relevant experience Strong proficiency in C# and .NET Experience with multithreading, asynchronous programming, and SQL Server Proven ability to tackle complex challenges with initiative and agility in high-pressure environments Apply now or reach out directly More ❯

Principal JavaScript Performance Engineer (with C++/Java/C# exposure) Location: London (Hybrid – 2 days WFH) Salary: £150,000 - £200,000 (Permanent)pension, private healthcare, gym membership, 25 days + 8 BH holiday allowance, tech/hardware budget. A high-growth software company is building the gold standard in UI frameworks and data-intensive visualisation technology . With millions … and iterate. Contribute to a product used by developers and enterprises worldwide. What you’ll bring Mastery of vanilla JavaScript and TypeScript , with additional exposure to C++, Java, or C# . Strong knowledge of data structures, algorithms, and performance optimisation . Experience with frameworks like React, Angular, or Vue , and a deep understanding of DOM internals and rendering pipelines . More ❯

Backend Software Engineer/Developer (Windows C/C++, C#) London to £70k FTC Are you a skilled Backend Software Engineer with strong C++ skills? You could be progressing your career in a senior, hands-on role at a global market data provider whilst enjoying a range of perks and benefits. As a Backend Software Engineer you will join an … software systems that require real-time and low latency, maintaining data feeds and developing key underlying transport protocols for data transmission. The platform has been built with C++ and C# deploying to AWS and requires high scalability and low latency - they currently handle 40 billion messages per day. Location/WFH: You'll join colleagues in the City office three … career development including personalised budget Gain valuable finance/exchange connectivity experience Apply now to find out more about this Backend Software Engineer/Developer (Windows C/C++, C#) opportunity. At Client Server we believe in a diverse workplace that allows people to play to their strengths and continually learn. We're an equal opportunities employer whose people come More ❯

eFX Algo IT team. The team develops the pricing, hedging and low latency order and price distribution team systems for the eFX desk. The team consists of Java and C# developers, developing server-side and UI components, respectively. This role is specifically a low-latency Java role, encompassing pricing work, hedging work, market connectivity work and associated services around that. … FATCA, EMIR, MiFID), Pricing & Valuation, Organizational Transformation & Process Improvement. IT & Information systems consulting: Business Analysis, Project Management, Change management, Front Office Support (functional and technical), Development (e.g C++, Python, C#, Java, VBA), Financial Software (e.g. Sophis, Murex, Summit, Calypso), IT Transformation & Innovation. As part of Quanteam Group, Quanteam UK & PL has today more than 80 consultants, working for major Capital More ❯