Principal Backend Developer (C#/.NET/Playwright) The Opportunity This is a career-defining role for a Principal Backend Developer who wants to be at the forefront of a growing SaaS organisation. You'll be joining a company that's scaling rapidly, building innovative products that make a real difference to its customers. This role offers the chance … robust, scalable, and future-proof. Working closely with product owners, testers, and front-end teams, you'll bring engineering excellence into every decision. With a stack centred on C#, .NET, cloud services, and automation frameworks, you'll be both hands-on in coding and guiding others to deliver their best work. Day-to-day responsibilities Architect and build scalable … backend services in C#/.NET Drive adoption of clean coding practices, design patterns, and SOLID principles Mentor engineers, fostering a culture of growth, learning, and high performance Collaborate with product owners to refine requirements and translate them into technical solutions Integrate automation testing (Playwright) and CI/CD pipelines to ensure code quality Lead technical discussions, setting direction More ❯
Nottingham, Nottinghamshire, East Midlands, United Kingdom Hybrid / WFH Options
Oscar Associates (UK) Limited
Senior Developer (C#, .Net) - Nottingham/hybrid remote - Salary up to £75K DOE plus flexible hours, hybrid working (2 days a week in office), 25 days holiday + bh, latest technologies, excellent progression and more! The Role A unique and exciting new opportunity has arisen for an experienced Senior Software Developer (C#, .Net) to join a rapidly growing … role is 2 days a week of your choice in the office including flexible hours (their core hours are between 10am - 3pm). As a Senior Software Developer (C# .Net) you will be responsible for a wide range of innovative projects from development of their innovative cloud-based software solutions which are used across the world. You will spend … are a talented Software Developer looking to become part of a team focused on being the best, then this could be the right move for you. Senior Developer (C#, .Net) - Nottingham/hybrid remote - Salary up to £75K DOE plus flexible hours, hybrid working (2 days a week in office), 25 days holiday + bh, latest technologies, excellent progression More ❯
Warwickshire, England, United Kingdom Hybrid / WFH Options
Oscar Technology
Lead Software Developer - Hybrid - Warwickshire - C# .Net/Azure - £60,000 - £65,000 The Role An innovative software house with over a 50% market share within their industry are looking for an experienced Lead Software Developer to spearhead their talented development team, whilst producing sophisticated software solutions in a hands on role. You will be leading a team of … the team. Progression pathways will be introduced immediately with plans for this position to grow into director and C-suite level. Requirements Minimum 5 years' experience coding with C# .NET, SQL Server, JavaScript etc Experience leading/mentoring other team members Ability to lead projects, perform 1 to 1s, code reviews and more Liaising with technical and non-technical … stakeholders to translate requirements into sophisticated software solutions Desirables Supply Chain/Logistics industry experience .NET MAUI Azure The Company The company produce a range of solutions across the globe and have been able to establish a strong position within the market. Their unique and bespoke software packages improve efficiency across the globe when it comes to the logistical More ❯
Banbury, Oxfordshire, South East, United Kingdom Hybrid / WFH Options
Oscar Associates (UK) Limited
Developer - Hybrid - Salary £50k (DOE) We are currently working with a growing SaaS company based in Oxfordshire, who have an exciting opportunity for a Software developer experienced with C#, .NET Core, and ASP.NET to join their growing Agile Development team. You will be designing, developing, and optimising backend services and RESTful APIs. Also, you will be managing and developing … Conduct thorough testing, including unit and integration tests, to ensure code quality. Ensure projects are completed on time and meet technical specifications. Essential Experience: Strong proficiency in C# and .NET Core Experienced with ASP.NET Core MVC and Web API Experienced with Entity Framework Core and LINQ Proven experience designing and implementing RESTful APIs Understanding of API versioning documentation (e.g. … architecture Benefits: Competitive base salary Hybrid working Private healthcare 33 days holiday 37.5-hour work weeks This is a great opportunity for an experinced Software Developer skilled with the .NET technological stack to join a growing company offering a spectacular benefits package. Please apply for immediate consideration. Many thanks, Iona Oscar Associates (UK) Limited is acting as an Employment More ❯
pressure, solving challenging problems, and explaining technical details clearly to audiences with varying expertise. Essential Skills & Experience Implementation or systems engineering for complex data solutions. Strong scripting skills (PowerShell, .NET, C#, Java, etc.). API integration experience (REST, SOAP) using tools like Postman or Fiddler. Solid RDBMS knowledge (MS SQL) and data handling expertise. Proficiency with Windows server/… client environments. Excellent written and verbal communication skills. Desirable - Programming experience (e.g., C#). - Knowledge of .NET framework and Azure Cloud technologies. - Experience in policing, criminal justice, or public sector IT. Security Requirements Due to the nature of the work, you must have been a UK resident for the last 5 years and be eligible to obtain NPPV3 + More ❯
Milton Keynes, Buckinghamshire, South East, United Kingdom Hybrid / WFH Options
Hays
a talented team of developers, designers, and product managers to deliver cutting-edge solutions that drive real value. Responsibilities Build and maintain interactive, scalable web applications using Blazor and .NET technologies. Collaborate with cross-functional teams to define, design, and implement new features. Ensure code quality through code reviews, unit testing, and adherence to best practices. Troubleshoot and resolve … issues across the full stack. Contribute to technical discussions and share knowledge with the wider team. What you'll need to succeed Strong proficiency in C# and the .NET ecosystem. Blazor experience is essential - candidates without hands-on Blazor experience will not be considered. Solid understanding of front-end technologies including HTML, CSS, and JavaScript. Experience working with RESTful More ❯
Employment Type: Contract, Work From Home
Rate: £350.0 - £400.0 per day + £350 - 400 per day Outside IR35
our tech platform connects tens of millions of customers with hundreds of thousands of restaurant, grocery and convenience partners across the globe. About this role As a Senior C# .NET Software Engineer within our Grocery & Retail Domain, your work will be the face of one of the world's leading food delivery companies, primarily for our customer-facing apps. … unlock new opportunities for our partners and enhance our customers' experience. This will include creating and improving various back-end components for company projects, utilizing technologies such as C#, .NET, GitHub CI, and AWS cloud infrastructure. These are some of the key ingredients to the role Master the craft of writing high-quality, thoroughly tested code within a high … in production Generate and implement creative ideas to improve the applications What will you bring to the table? Skills to develop and maintain robust applications using C# and modern .NET frameworks, writing clean, reusable, and well-documented code. Understanding of engineering principles (OOP, data structures, design patterns) and modern architectural patterns (microservices, event-driven) to build scalable and maintainable More ❯
Southampton, Hampshire, South East, United Kingdom Hybrid / WFH Options
Spectrum It Recruitment Limited
high-performing development team Drive the end-to-end design and build of SaaS products, from initial architecture to delivery Remain technically involved and hands-on, particularly in C#, .NET, and Azure Implement engineering best practices: Agile/Scrum, CI/CD pipelines, and code quality standards Collaborate cross-functionally with product and business stakeholders to translate requirements into … both a technical leader and mentor, fostering a culture of innovation and accountability About You Proven experience building SaaS products from the ground up Strong technical background in C#, .NET, and Azure Experience managing and mentoring small development teams while remaining technically hands-on Solid understanding of modern software development practices, cloud architecture, and Agile delivery Excellent communication skills More ❯
Chilworth, Hampshire, United Kingdom Hybrid / WFH Options
Spectrum IT Recruitment
high-performing development team Drive the end-to-end design and build of SaaS products, from initial architecture to delivery Remain technically involved and hands-on, particularly in C#, .NET, and Azure Implement engineering best practices: Agile/Scrum, CI/CD pipelines, and code quality standards Collaborate cross-functionally with product and business stakeholders to translate requirements into … both a technical leader and mentor, fostering a culture of innovation and accountability About You Proven experience building SaaS products from the ground up Strong technical background in C#, .NET, and Azure Experience managing and mentoring small development teams while remaining technically hands-on Solid understanding of modern software development practices, cloud architecture, and Agile delivery Excellent communication skills More ❯
high-performing development team Drive the end-to-end design and build of SaaS products, from initial architecture to delivery Remain technically involved and hands-on, particularly in C#, .NET, and Azure Implement engineering best practices: Agile/Scrum, CI/CD pipelines, and code quality standards Collaborate cross-functionally with product and business stakeholders to translate requirements into … both a technical leader and mentor, fostering a culture of innovation and accountability About You Proven experience building SaaS products from the ground up Strong technical background in C#, .NET, and Azure Experience managing and mentoring small development teams while remaining technically hands-on Solid understanding of modern software development practices, cloud architecture, and Agile delivery Excellent communication skills More ❯
portsmouth, hampshire, south east england, united kingdom Hybrid / WFH Options
Spectrum IT Recruitment
high-performing development team Drive the end-to-end design and build of SaaS products, from initial architecture to delivery Remain technically involved and hands-on, particularly in C#, .NET, and Azure Implement engineering best practices: Agile/Scrum, CI/CD pipelines, and code quality standards Collaborate cross-functionally with product and business stakeholders to translate requirements into … both a technical leader and mentor, fostering a culture of innovation and accountability About You Proven experience building SaaS products from the ground up Strong technical background in C#, .NET, and Azure Experience managing and mentoring small development teams while remaining technically hands-on Solid understanding of modern software development practices, cloud architecture, and Agile delivery Excellent communication skills More ❯
SQL Developer Trowbridge- £70,000- £75,000 + Excellent benefits package. SQL Developer, Stored Procedures, .Net Core, HTML, Bath, Bradford-on-Avon, Chippenham, Swindon This established market leader is looking to add an experienced SQL Developer to their collaborative development team. You will be responsible for the development and maintenance of the companys in-house systems, database integrity and … The role requires someone to work from the office. Required: Strong SQL Server skills. Complex queries & Stored Procedures knowledge Storing, migrating and structuring data for multiple applications Experience with .Net Core & OOP. Version control using Git Desirable: HTML, JavaScript & CSS PHP The role will see you join an advanced development team where you will see the effect of your More ❯
Worcester, Worcestershire, England, United Kingdom
Searchability
cross-platform development (Windows, Linux, Android, iOS, Mac) using CMake. Utilize unit testing frameworks like GTest/Catch and open-source libraries such as Boost and OpenCV. Work with .NET Core and Restful API, and proficiency in scripting languages like Python. Implement complex object-oriented patterns, public interfaces, and architectural patterns. Demonstrate genuine passion for problem-solving and issue … in a commercial environment. Strong proficiency in modern C++ development and cross-platform development. Familiarity with unit testing frameworks, open-source libraries, and code review processes. Working knowledge of .NET Core, Restful API, and scripting languages. Passion for problem-solving and a commitment to continuous improvement. Experience in Version Control System (preferably GIT) and agile methodologies. More ❯
Role: Senior Mobile Developer Location: Leeds (office-based) Salary: £45,000 - £47,500 per year Are you an experienced Mobile Developer with strong .NET skills and a passion for building scalable, mobile-first solutions? Do you enjoy working across multiple platforms and mentoring others while delivering high-quality applications? If so, this is your opportunity to make a real … development Oversee deployment processes and ensure robust release quality Mentor junior developers and share technical expertise Ensure compliance with security and industry best practice Requirements: 5+ years' experience with .NET and C# Proven track record delivering mobile solutions across multiple platforms Strong knowledge of React Native, Xamarin, Blazor and Objective-C Solid understanding of REST API design and development More ❯
Exeter, Devon, England, United Kingdom Hybrid / WFH Options
Reed
Design: Collaborate with business stakeholders, IT teams, and external partners to gather requirements and define workflows. Design data mappings, transformations, APIs, and message schemas. Development and Implementation: Utilize C#, .NET, or similar languages to develop, test, and deploy integration solutions. Build RESTful APIs and backend services and configure connectors with robust error handling. Integration Platforms and Tools: Work with … objectives. Required Skills & Qualifications: Proven experience as an Integration Developer or in a similar role with a strong focus on system integration and API development. Proficiency in C#/.NET or equivalent programming languages, and experience with API development and consumption. Experience with integration tools like SSIS, Azure Logic Apps, and Azure Data Factory. Strong knowledge of SQL databases More ❯
Hereford, Herefordshire, West Midlands, United Kingdom Hybrid / WFH Options
allpay.net
About The Role allpay Limited are one of the fastest growing Fintech companies in the UK and are experts in the payment and financial services arena. We now have a fantastic opportunity for Software Engineer to join us on a More ❯
Guidewire Developer Location: London/Hybrid (2 days in the office, 3 days from home) Salary: £55,000 - £65,000 A Guidewire developer is required for a leading Lloyd's of London Insurance organisation, implementing a Guidewire Claims system. This More ❯
.NET Developer - Contract - Outside IR35 Hybrid, Loughborough - 6 Months - £200 - 275/day We're working with a growing AI Consultancy who are looking for multiple enthusiastic .NET Developers to join them on an initial 6 Month Contract basis. Ideally, you will have 3+ years' experience in .NET, experience using Blazor & some exposure to Financial Auditing. Key More ❯
.NET Developer - Contract - Outside IR35 Hybrid, Loughborough - 6 Months - £200 - 275/day We're working with a growing AI Consultancy who are looking for multiple enthusiastic .NET Developers to join them on an initial 6 Month Contract basis. Ideally, you will have 3+ years' experience in .NET, experience using Blazor & some exposure to Financial Auditing. Key More ❯
.Net Azure GenAI Principal Engineer/Technical Lead - £100-120k London/Hybrid My prestigious global legal client requires a Development Tech Lead/Principal Engineer to join their innovation function working across a wide range of initiatives and projects You will be the technical lead for a dispersed development team with experience of coaching and mentoring team … members Core Skills: - .Net - Azure - Generative AI Other Skills: - IaC - Azure DevOps - CI/CD As well as first class communication skills you will possess demonstrable experience across strategic thinking, taking a holistic approach to seeing the bigger picture when developing solutions You will be confident and credible when liaising with senior management to interrogate requirements and devise appropriate … solutions. You will be adept at working with vendors and across the wider business to build solutions and tackle problems .Net Azure GenAI Principal Engineer/Technical Lead - £100-120k London/Hybrid In accordance with the Employment Agencies and Employment Businesses Regulations 2003, this position is advertised based upon DGH Recruitment Limited having first sought approval of More ❯
Great opportunity for a Principal .NET Developer to join a SaaS scale-up in Manchester. Since their inception in 2015 this company has grown from start-up to scale-up, they now employ almost 200 people and have over 50,000 clients using their software around the world. The technology department is made up of product teams responsible for … agile way, delivering small increments of value to their customers very frequently. This role sits across the teams responsible for developing their flagship software platform and as a Principal .NET Developer, you'll be given the opportunity to lead teams that build, test and ship super-fast in an environment where people value engineering best practice, pairing and continuous … improvement. Skills: C#, .NET, REST APIs Azure Cloud - Azure Functions, Logic Apps, Service Bus, CosmosDB TDD, CI/CD, SOLID The money is good too – up to £80k plus benefits for the right person. If you're interested in this opportunity and would like to know more, please apply through this advert and I will contact you ASAP. InterQuest More ❯
liaise with other application support team staff. Following the existing team programming policy to keep a common development style to be shared in team members. Updating versions of MS .Net Framework and MS Visual .NET platform to include any necessary changes of existing systems running in Production. Liaising with the relevant support teams such as other Development sections More ❯
dunfermline, north east scotland, united kingdom Hybrid / WFH Options
Change Digital – Digital & Tech Recruitment
Software Developer – Permanent – Edinburgh – up to £60K plus benefits (Hybrid working) (ASP.Net/.Net Core/C#/PostgreSQL/Angular/Kubernetes/Git/CI/CD and WebAPI) Change Digital are working closely with an established software company in Edinburgh to support their development growth plans and ongoing business. As a result of this, we are … now looking for an experienced and proficient .NET developer to join a small, friendly team based in Edinburgh, but mostly working from home. You will be the core of a team tasked with redeveloping and merging the core back-office business systems and B2B applications into a single new application. As such, you will have great freedom to work … support, assistance, and expertise of a time-served team who know the market and audience well. A key requirement for this position is experience in developing web APIs in .Net Core. The company is building their new applications in .Net, Angular and PostgreSQL, hosting a microservice architecture within a Kubernetes environment. They do not expect in-depth experience More ❯
up to £65 000 depending on experience BENEFITS: Private healthcare, share options, income protection, pension, life cover. Ideally, you will have: Experience in developing web-based applications using C# .NET Strong skill and experience with SQL Server An understanding of frontend JavaScript frameworks A good appreciation of design, usability and interactivity Experience using microservices If you feel this exciting More ❯
Evesham, Worcestershire, West Midlands, United Kingdom
Oscar Associates (UK) Limited
Software Developer - C# .Net/JavaScript/SQL - Evesham - £35k - £45k DOE The Role An innovative software solutions provider in the Manufacturing sector is looking to grow its development team after securing exciting new projects. In this role, you'll work across the full SDLC across differet domains including Web based, desktop, mobile, internal and customer facing applications. These … be part of a collaborative team where your ideas will help shape technical direction, and you'll gain exposure to a wide range of platforms and technologies. Requirements C# .NET JavaScript, HTML + CSS WinForms/WebForms VB.NET Desirables .NET MAUI (iOS/Android development) Industry experience within manufacturing/automation The Company This is a well-established … this is the role for you! Apply now and don't miss out! The initial teams interview can be set up almost immediately so apply now! Software Developer - C# .Net/JavaScript/SQL - Evesham - £35k - £45k DOE Oscar Associates (UK) Limited is acting as an Employment Agency in relation to this vacancy. To understand more about what we More ❯