876 to 900 of 988 C# Jobs in London

Graduate Software Engineer - Portfolio Management £45K - £55K + Bonus + Bens A small, high-performance team at the centre of a specialist reinsurance group are looking for several Computer Science/Maths graduates to join them in London. You will More ❯

C#.NET, .NET Core, Entity, API's, SQL Server, GIT, Agile, Windows Server, EDI New Permanent Developer role. Office-based 3-4 days, candidates must live within an easy commute of the office location in Croydon/Purley Our client is More ❯

C#.NET, .NET Core, Entity, API's, SQL Server, GIT, Agile, Windows Server, EDI New Permanent Developer role. Office-based 3-4 days, candidates must live within an easy commute of the office location in Croydon/Purley Our client is More ❯

C#.NET, .NET Core, Entity, API's, SQL Server, GIT, Agile, Windows Server, EDI New Permanent Developer role. Office-based 3-4 days, candidates must live within an easy commute of the office location in Croydon/Purley Our client is More ❯

tools. Create and update documentation, FAQs, and support material for new releases. Assist with other administrative and enablement tasks that improve the overall customer support experience Skills, Qualifications & Experience C# (.NET 8): working knowledge to read code, map logs to code paths, and support basic debugging SQL (SQL Server): comfortable writing queries with joins and grouping; validate data fixes safely … and processes A self starter who enjoys both customer interaction and technical investigation Nice to have JavaScript/AngularJS: use browser DevTools to capture errors and surface actionable details C# (.NET 8): deeper debugging, reading stack traces, mapping logging entries to code paths Azure operations: inspect app and container logs, run safe read-only queries against Azure SQL databases, review More ❯

tools. Create and update documentation, FAQs, and support material for new releases. Assist with other administrative and enablement tasks that improve the overall customer support experience Skills, Qualifications & Experience C# (.NET 8): working knowledge to read code, map logs to code paths, and support basic debugging SQL (SQL Server): comfortable writing queries with joins and grouping; validate data fixes safely … and processes A self starter who enjoys both customer interaction and technical investigation Nice to have JavaScript/AngularJS: use browser DevTools to capture errors and surface actionable details C# (.NET 8): deeper debugging, reading stack traces, mapping logging entries to code paths Azure operations: inspect app and container logs, run safe read-only queries against Azure SQL databases, review 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 ❯

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 ❯

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 ❯

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 ❯

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 ❯

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 ❯

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 ❯

senior developer to build on their experience in a trading company in this successful Commodities Trading company. The role is a combination of technical leadership, hands on development (.NET C#), and mentoring and some line management of 2 less experienced team members. This varied role therefore suits someone who enjoys interacting with different parts of an organisation and taking a … lead on decision making. Package: £140-175k p.a. The Senior Software Engineer will have significant prior experience as a Senior Software Engineer/Senior Developer working as C# Developer in a trading type environment where they will have gained knowledge of the full trade life-cycle and feel comfortable speaking directly to traders and senior stakeholders in the business … work on as the company continues to expand into new product areas including renewable energy trading and asset optimisation. Prior experience in a ltechnical leadership position is ideal, but C# Developers with excellent experience and aptitude to step up into a leadership role will also be considered. The company is in the process of moving to the cloud, so Azure 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 ❯

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 ❯

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 ❯

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 ❯

Job Title: Front Office C#/Angular Developer Client: Quantitative Trading Firm – Elite, technology-led, and performance-driven Salary: Up to £85k + Exceptional Bonus + Package Location: London (Hybrid) Length: 6 Month FTC An elite global trading firm is seeking an experienced Front Office C#/Angular to join their front-office technology team in London on an initial … Experience 4+ years experience as a Quant Developer, Software Engineer, or similar front-office role within trading or hedge funds (also open to a vendor) Strong coding skills in C# and Angular (Python experience also valuable) Degree (or higher) in Computer Science, Engineering, or a related quantitative field Self-motivated, delivery-focused, and confident working in high-pressure environments Sells More ❯

Job Title: Front Office C#/Angular Developer Client: Quantitative Trading Firm – Elite, technology-led, and performance-driven Salary: Up to £85k + Exceptional Bonus + Package Location: London (Hybrid) Length: 6 Month FTC An elite global trading firm is seeking an experienced Front Office C#/Angular to join their front-office technology team in London on an initial … Experience 4+ years experience as a Quant Developer, Software Engineer, or similar front-office role within trading or hedge funds (also open to a vendor) Strong coding skills in C# and Angular (Python experience also valuable) Degree (or higher) in Computer Science, Engineering, or a related quantitative field Self-motivated, delivery-focused, and confident working in high-pressure environments Sells More ❯

Job Title: Front Office C#/Angular Developer Client: Quantitative Trading Firm – Elite, technology-led, and performance-driven Salary: Up to £85k + Exceptional Bonus + Package Location: London (Hybrid) Length: 6 Month FTC An elite global trading firm is seeking an experienced Front Office C#/Angular to join their front-office technology team in London on an initial … Experience 4+ years experience as a Quant Developer, Software Engineer, or similar front-office role within trading or hedge funds (also open to a vendor) Strong coding skills in C# and Angular (Python experience also valuable) Degree (or higher) in Computer Science, Engineering, or a related quantitative field Self-motivated, delivery-focused, and confident working in high-pressure environments Sells More ❯

Job Title: Front Office C#/Angular Developer Client: Quantitative Trading Firm – Elite, technology-led, and performance-driven Salary: Up to £85k + Exceptional Bonus + Package Location: London (Hybrid) Length: 6 Month FTC An elite global trading firm is seeking an experienced Front Office C#/Angular to join their front-office technology team in London on an initial … Experience 4+ years experience as a Quant Developer, Software Engineer, or similar front-office role within trading or hedge funds (also open to a vendor) Strong coding skills in C# and Angular (Python experience also valuable) Degree (or higher) in Computer Science, Engineering, or a related quantitative field Self-motivated, delivery-focused, and confident working in high-pressure environments Sells More ❯

with a willingness to take on responsibilities and challenges. · Work comfortably and proactively from design briefs rather than water-tight specification Software/language skills: Essential (proven experience required) · C# .Net Core application development (at least 2 years) · Microsoft Entity Framework · LinQ · Microsoft Visual Studio IDE (v17 upwards (2022)) Preferred · C# WebAPI development (OAuth2) · Microsoft SQL Server · Knowledge of GIT 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 ❯