work across a variety of technologies and will need to be comfortable doing so. Our teams have used Java, Ruby, Python, ES6 with React, as well as C# with .NETCore, and plenty more stacks. We don't limit ourselves as a company to particular technologies and we expect all our engineers to be keen on learning More ❯
work across a variety of technologies and will need to be comfortable doing so. Our teams have used Java, Ruby, Python, ES6 with React, as well as C# with .NETCore, and plenty more stacks. We don't limit ourselves as a company to particular technologies and we expect all our engineers to be keen on learning More ❯
Wales, Yorkshire, United Kingdom Hybrid / WFH Options
Made Tech Limited
work across a variety of technologies and will need to be comfortable doing so. Our teams have used Java, Ruby, Python, ES6 with React, as well as C# with .NETCore, and plenty more stacks. We don't limit ourselves as a company to particular technologies and we expect all our engineers to be keen on learning More ❯
Swansea, Wales, United Kingdom Hybrid / WFH Options
Made Tech Limited
work across a variety of technologies and will need to be comfortable doing so. Our teams have used Java, Ruby, Python, ES6 with React, as well as C# with .NETCore, and plenty more stacks. We don't limit ourselves as a company to particular technologies and we expect all our engineers to be keen on learning More ❯
Greater London, England, United Kingdom Hybrid / WFH Options
ByteHire
Job Role: Product Engineer (backend C# .netcore) Reference: BH-355p Job Type: Permanent Location: Hybrid, West Hampstead, London (2 days/week in-office) Salary: up to £75-£80k per annum About The Client: Our client builds AI-driven voice automation for regulated industries, helping companies reduce costs while meeting strict compliance standards. Founded by experienced … founders, their team combines deep technical expertise with a fast-moving, execution-focused approach. Overview: We’re hiring on behalf of our client for a Product Engineer (backend C# .netcore) to join their growing team. The role will focus on backend development for a platform that blends telephony, voice AI, and LLMs to create next-generation … environment, this role is for you. Key Responsibilities: Communicate clearly, seek clarification when needed. Navigate ambiguity and working with minimal supervision. Develop and maintain backend services using C# and .NET Core. Design and test REST APIs with JWT-based authentication (OAuth is desirable for the future). Write performant SQL for PostgreSQL databases; help design schemas and queries. Build More ❯
Reigate, Surrey, South East, United Kingdom Hybrid / WFH Options
Client Server
Backend Software Engineer/Developer (C# .NetCore Azure SaaS) Reigate/WFH to £90k Are you a backend focussed C# technologist with an indepth knowledge of Azure? You could be progressing your career in a senior, hands on role at a global InsurTech business that is producing game changing technology. As a Backend Software Engineer you … in the Reigate office twice a week for team meet-ups and stakeholder meetings with the other three days work from home. About you: You have expertise with C# .NetCore backend software development, having worked on large, scalable systems with complexity You're an advocate of creating, clean, reusable and maintainable code and have a good … and Life Assurance Training and career development Social events and a range of other perks Apply now to find out more about this Backend Software Engineer/Developer (C# .NetCore Azure SaaS) opportunity. At Client Server we believe in a diverse workplace that allows people to play to their strengths and continually learn. We're an More ❯
service platform that automates contact operations across voice, email, chat and SMS, enabling humans in the loop where necessary. Overview: We’re hiring for a Product Engineer (backend C# .netcore) to join our founding team. The role will focus on backend development that blends email, chat, telephony, voice AI and LLMs. You’ll play a key … environment, this role is for you. Key Responsibilities: Communicate clearly, seek clarification when needed. Navigate ambiguity and working with minimal supervision. Develop and maintain backend services using C# and .NET Core. Design and test REST APIs with JWT-based authentication (OAuth is desirable for the future). Write performant SQL for PostgreSQL databases; help design schemas and queries. Build … ChatGPT, and ElevenLabs. Maintain compliance and security in systems handling sensitive financial or personal data. Requirements/experience: 5+ years of software engineering experience. Proven backend experience with C# (.NETCore) in Linux-based production environments. Comfortable navigating ambiguity and working with minimal supervision. Strong SQL knowledge, with experience using PostgreSQL in live systems. REST API development More ❯
City of London, London, United Kingdom Hybrid / WFH Options
VoxOps AI
service platform that automates contact operations across voice, email, chat and SMS, enabling humans in the loop where necessary. Overview: We’re hiring for a Product Engineer (backend C# .netcore) to join our founding team. The role will focus on backend development that blends email, chat, telephony, voice AI and LLMs. You’ll play a key … environment, this role is for you. Key Responsibilities: Communicate clearly, seek clarification when needed. Navigate ambiguity and working with minimal supervision. Develop and maintain backend services using C# and .NET Core. Design and test REST APIs with JWT-based authentication (OAuth is desirable for the future). Write performant SQL for PostgreSQL databases; help design schemas and queries. Build … ChatGPT, and ElevenLabs. Maintain compliance and security in systems handling sensitive financial or personal data. Requirements/experience: 5+ years of software engineering experience. Proven backend experience with C# (.NETCore) in Linux-based production environments. Comfortable navigating ambiguity and working with minimal supervision. Strong SQL knowledge, with experience using PostgreSQL in live systems. REST API development More ❯
City of London, London, United Kingdom Hybrid / WFH Options
VirtueTech Recruitment Group
C# | .NET | SQL | Commodity/FX Trading | £700/Day OUTside IR35 | 6-month | Hybrid LDN Our client is looking for a C# .NET Engineer for a 6-month rolling project, working at a leading Cross Asset Trading and Broking house. This client deals in both physical and non-physical commodities as well as acting as a risk … and come into the team as an established FX specialist developer as well as leading and up-skilling peers around them in the domain knowledge on FX. This C# .NET role will require previous experience in microservices architecture, Real-Time systems, strong SQL server, and containerisation through docker. Having previous commercial experience in the FX Trading space is going … to be essential for this role. This backend C# .NET engineering role is: 💸 This role is paying up to £700/day Outside IR35 💻 This hybrid role is 3 days in office 📍 The office is in Central London Technology Stack/Experience: C# NET 5/.NetCore SQL Server Microservices Docker experience (Containerisation) Previous FX More ❯
C# | .NET | SQL | Commodity/FX Trading | £700/Day OUTside IR35 | 6-month | Hybrid LDN Our client is looking for a C# .NET Engineer for a 6-month rolling project, working at a leading Cross Asset Trading and Broking house. This client deals in both physical and non-physical commodities as well as acting as a risk … and come into the team as an established FX specialist developer as well as leading and up-skilling peers around them in the domain knowledge on FX. This C# .NET role will require previous experience in microservices architecture, Real-Time systems, strong SQL server, and containerisation through docker. Having previous commercial experience in the FX Trading space is going … to be essential for this role. This backend C# .NET engineering role is: 💸 This role is paying up to £700/day Outside IR35 💻 This hybrid role is 3 days in office 📍 The office is in Central London Technology Stack/Experience: C# NET 5/.NetCore SQL Server Microservices Docker experience (Containerisation) Previous FX More ❯
Newcastle Upon Tyne, Tyne and Wear, North East, United Kingdom Hybrid / WFH Options
Client Server
Quantitative Developer (C# .Net SQL Maths) Newcastle onsite to £150k+ Are you a mathematically minded Quantitative Developer with a first class education and strong programming skills? You could be progressing your career, working on complex and interesting systems at a FinTech start-up, they have secure backing and an established Hedge Fund client as a partner. As a Quantitative … integrating the mathematical models built by Investment Quants, creating scalable, performant and supportable cross asset class applications including APIs, UIs and tools. You'll be mainly using backend C# .Net and SQL. There's an Agile, collaborative team environment with plenty of problem solving, learning opportunities and career development as the company scales. Location/WFH: You'll join … university), backed by A grades at A-level You have commercial experience in a Quantitative Developer position at a buyside institution or Tier 1 bank You have advanced C# .Net programming skills including .NetCore (will also consider Java, Python or C++ background if happy to use C# going forward) You have a strong knowledge of More ❯
London, England, United Kingdom Hybrid / WFH Options
Client Server
Software Developer/Engineer (C# .Net SQL) *London onsite* to £180k+ Are you a technologist with a record of academic achievement? You could be progressing your career working on complex and challenging systems at a Hedge Fund with over $17 billion under management. As a Software Developer you'll collaborate with a team of highly intelligent technologists and finance … 2.1 in a STEM discipline from a top tier university (i.e. Russel Group or top 100 global university), backed by A grades at A-level You have advanced C# .Net programming skills including .NetCore (will also consider Java, Python or C++ background if happy to use C# going forward) You have a strong knowledge of … as care for elderly relatives Various social groups including sports teams Private healthcare and wellness activities Apply now to find out more about this Software Developer/Engineer (C# .Net SQL) 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 More ❯
Staffordshire, United Kingdom Hybrid / WFH Options
Uniting Ambition
stuck into meaningful projects where your technical input truly matters. Upskilling Opportunities – As the team modernises the stack, you'll have the chance to learn and work with Go , .NETCore , microservices, and cloud-first architectures. Tech-Led Culture – Join a collaborative team that lives and breathes quality software development, driven by best practices and a passion … for building resilient, high-performing systems. Tech You'll Work With Core : C#/.NET Framework transitioning to .NETCore UI : WPF (Windows Presentation Foundation) Database : MS SQL Server, T-SQL Environment : Windows-based desktop applications Coming Soon : Microservices, Go, Cloud technologies What You’ll Need Strong experience with C# and .NET Proficiency More ❯
London, England, United Kingdom Hybrid / WFH Options
Orla Rose Associates
design, develop, and deploy high-quality software solutions. Participate in architectural decisions and contribute to the continuous improvement of the tech stack. Skills & Experience Required: Strong working knowledge of .NET based CMS products (Umbraco, Optimizely/Episerver). Tech Stack You’ll Be Working With: .NET Framework, .NETCore (with an upcoming shift to .NET 8.0). ASP.NET MVC/ASP.NET Core MVC. Web API/Web API 2 and OAuth 2.0. Relational and NoSQL databases. Transact-SQL (T-SQL). CSS: SASS and understanding of task runners like GULP/GRUNT. Please get in touch for full details. Seniority level Mid-Senior level Employment type Full-time Job function Advertising, Administrative More ❯
stuck into meaningful projects where your technical input truly matters. Upskilling Opportunities - As the team modernises the stack, you'll have the chance to learn and work with Go , .NETCore , microservices, and cloud-first architectures. Tech-Led Culture - Join a collaborative team that lives and breathes quality software development, driven by best practices and a passion … for building resilient, high-performing systems. Tech You'll Work With Core : C#/.NET Framework transitioning to .NETCore UI : WPF (Windows Presentation Foundation) Database : MS SQL Server, T-SQL Environment : Windows-based desktop applications Coming Soon : Microservices, Go, Cloud technologies What You'll Need Strong experience with C# and .NET Proficiency More ❯
North West London, London, United Kingdom Hybrid / WFH Options
ByteHire
Job Role: Product Engineer (backend C# .netcore) Reference: BH-355p Job Type: Permanent Location: Hybrid, West Hampstead, London (2 days/week in-office) Salary: up to £75-£80k per annum About The Client: Our client builds AI-driven voice automation for regulated industries, helping companies reduce costs while meeting strict compliance standards. Founded by experienced … startup founders, their team combines deep technical expertise with a fast-moving, execution-focused approach. Overview: Were hiring on behalf of our client for a Product Engineer (backend C# .netcore) to join their growing team. The role will focus on backend development for a platform that blends telephony, voice AI, and LLMs to create next-generation … environment, this role is for you. Key Responsibilities: Communicate clearly, seek clarification when needed. Navigate ambiguity and working with minimal supervision. Develop and maintain backend services using C# and .NET Core. Design and test REST APIs with JWT-based authentication (OAuth is desirable for the future). Write performant SQL for PostgreSQL databases; help design schemas and queries. Build More ❯
Brighton, Sussex, United Kingdom Hybrid / WFH Options
ARC IT Recruitment
and UX Designers. Initially about 60% of your role will be working on VB.NET but over time as Legacy software is upgraded you will be working on more C#, .NETCore applications. Requirements include the following: VB.NET required to work on Legacy software C# and .NETCore SQL (ideally MS SQL Server) Unit Testing More ❯
City of London, London, United Kingdom Hybrid / WFH Options
developrec
Senior .NET Engineer - Fully Remote (with quarterly visits to London) - Up to £100k We're working with a leading Fintech company that specialises in developing payment platforms across a range of industries. As they continue to grow, they're looking to strengthen their .NET development team to drive forward exciting greenfield projects. With nearly a decade in the … industry, they have an impressive portfolio of clients. This role is ideal for Senior to Principal .NET Engineers who are eager to engage in architectural decisions, contribute to innovative designs, and challenge requirements with a proactive mindset, all while showcasing exceptional engineering skills. Key Responsibilities: Collaborate with stakeholders to refine and enhance solution design Develop scalable, reliable, and high … technologies and methodologies Evaluate application performance to ensure optimal user experiences Document workflows and track performance metrics Manage and resolve incidents Required Skills & Experience: Expertise in C# Proficient with .NETCore and later (currently using .NET8) Hands-on experience with Azure and microservices Strong knowledge of API development and integration Familiarity with Terraform Solid experience in unit More ❯
Senior .NET Engineer - Fully Remote (with quarterly visits to London) - Up to £100k We're working with a leading Fintech company that specialises in developing payment platforms across a range of industries. As they continue to grow, they're looking to strengthen their .NET development team to drive forward exciting greenfield projects. With nearly a decade in the … industry, they have an impressive portfolio of clients. This role is ideal for Senior to Principal .NET Engineers who are eager to engage in architectural decisions, contribute to innovative designs, and challenge requirements with a proactive mindset, all while showcasing exceptional engineering skills. Key Responsibilities: Collaborate with stakeholders to refine and enhance solution design Develop scalable, reliable, and high … technologies and methodologies Evaluate application performance to ensure optimal user experiences Document workflows and track performance metrics Manage and resolve incidents Required Skills & Experience: Expertise in C# Proficient with .NETCore and later (currently using .NET8) Hands-on experience with Azure and microservices Strong knowledge of API development and integration Familiarity with Terraform Solid experience in unit More ❯
Position: .NET Developer Location: London/Hybrid Duration: 6 months Start Date: Immediate Day Rate: £500-£550 (Outside IR35) Primis are actively searching for a .NET Developer looking for their next challenge! Do you thrive in collaborative environments and have a passion for building scalable software solutions? I have an exciting 6-month contract role based in the … deliver high-quality software solutions. Maintain and improve existing applications, ensuring performance, scalability, and security. Troubleshoot and resolve issues across the software development lifecycle. Requirements: Proven experience as a .NET Developer (Mid to Senior level). Strong expertise in .NET Framework/.NETCore and C# . Solid understanding of SQL Server and relational databases. … vital role in the growth of the business. You’ll collaborate with other talented developers and engineers as part of a supportive, innovative team. If you’re a proactive .NET Developer looking for your next role to start immediately – apply now! Research indicates that men will apply to a role when they meet only 50-60% of the requirements More ❯
City of London, London, United Kingdom Hybrid / WFH Options
Primis
Position: .NET Developer Location: London/Hybrid Duration: 6 months Start Date: Immediate Day Rate: £500-£550 (Outside IR35) Primis are actively searching for a .NET Developer looking for their next challenge! Do you thrive in collaborative environments and have a passion for building scalable software solutions? I have an exciting 6-month contract role based in the … deliver high-quality software solutions. Maintain and improve existing applications, ensuring performance, scalability, and security. Troubleshoot and resolve issues across the software development lifecycle. Requirements: Proven experience as a .NET Developer (Mid to Senior level). Strong expertise in .NET Framework/.NETCore and C# . Solid understanding of SQL Server and relational databases. … vital role in the growth of the business. You’ll collaborate with other talented developers and engineers as part of a supportive, innovative team. If you’re a proactive .NET Developer looking for your next role to start immediately – apply now! Research indicates that men will apply to a role when they meet only 50-60% of the requirements More ❯
Role - C#/API Developer Duration - 3 months with very likely extension Location - Remote Rate - £500 per day (Inside IR35) Tech C#, .NET/.NETCore/.NET Framework Experience with REST APIs Ability to work with SQL query syntax with SQL Server and Oracle To create technical specifications and test plans Provide technical support More ❯
Senior C# Developer - Fixed Income Key Technologies: C#, .NET, .NETCore, Azure, SQL London Perm Role | Hybrid Working Structure £80,000 - £110,000 Harrington Starr has partnered with a global Investment Bank who are looking to hire a seasoned Senior C# Developer with extensive experience developing Front Office trading systems - specifically Fixed Income . Key Responsibilities More ❯
City of London, London, United Kingdom Hybrid / WFH Options
Harrington Starr
Senior C# Developer - Fixed Income Key Technologies: C#, .NET, .NETCore, Azure, SQL London Perm Role | Hybrid Working Structure £80,000 - £110,000 Harrington Starr has partnered with a global Investment Bank who are looking to hire a seasoned Senior C# Developer with extensive experience developing Front Office trading systems - specifically Fixed Income . Key Responsibilities More ❯
Manchester, North West, United Kingdom Hybrid / WFH Options
Oscar Associates (UK) Limited
Mid-Level Software Developer, Manchester, C#,.Net, £35K-£45K, 3 days working from home, Flexible working hours, 25 days holiday + BH, Clear progression pathways, Training and development, Free parking, Quarterly socials, + a range of brilliant company benefits! We are looking for an ambitious and motivated .Net Developer to join an exciting Manchester based company, providing software … developers, project managers, and cross-functional teams to analyse business requirements and implement effective solutions. Key duties will include writing clean, scalable, and efficient code in C# or other .NET languages, participating in code reviews, debugging, and troubleshooting issues. You will be responsible for integrating various systems or external APIs and … ensure that all parts of the application work cohesively, leveraging your understanding of both front-end and back-end systems. Requirements Confident around C# and .Net technologies, ideally .NetCore Confident working with API'S Some knowledge of modern frontend technologies (React/Angular) Working knowledge of Cloud technologies, specifically Azure would be beneficial What they're offering Salary of More ❯