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        3 API jobs in Republic of Ireland + 20 miles

        .NET Developer - Hybrid - SaaS - Ireland

        Anson Mccade
        Republic of Ireland
        Unspecified
        Strong experience developing, maintaining, and debugging web applications and API endpoints
        Strong experience developing, maintaining, and debugging web applications and API endpoints
        PREMIUM
        Build and support REST API integrations with backend and ERP systems * Strong understanding of RESTful API development and integration
        Build and support REST API integrations with backend and ERP systems * Strong understanding of RESTful API development and integration
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        PREMIUM

        Automation Engineer

        Drebbelogic Limited
        Dublin, County Dublin
        From £50 to £55 per hour
        Manufacturing automation experience in biopharmaceutical Formulation/Fill/Finish or Active Pharmaceutical Ingredient (API) facilities
        Manufacturing automation experience in biopharmaceutical Formulation/Fill/Finish or Active Pharmaceutical Ingredient (API) facilities
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        Senior Software Developer

        Sanderson Recruitment
        London
        £60000 - £65000 per annum + Some flexibility + £15-£20k in bonus
        Senior Software Engineer (Python/Java, AWS) From a technical standpoint, the team is looking for experienced software engineers with strong skills in either Python or Java alongside AWS, with the ability to work across a modern cloud environment. London, Manchester or Cheltenham - primarily on site £60,000-£65,000 per annum basic salary, with some flexibility at the top end for the right candidate £15,000-£20,000 per annum in additional compensation related to clearance and wider benefits - No clearance required to apply, but eligibility for enhanced DV clearance is essential - Sanderson Government and Defence are partnered with a major organisation in the UK Defence and National Security space as they look to strengthen their engineering capability delivering into a highly secure government programme. This role can be based in London, Manchester or Cheltenham, and we are open to candidates ...
        Senior Software Engineer (Python/Java, AWS) From a technical standpoint, the team is looking for experienced software engineers with strong skills in either Python or Java alongside AWS, with the ability to work across a modern cloud environment. London, Manchester or Cheltenham - primarily on site £60,000-£65,000 per annum basic salary, with some flexibility at the top end for the right candidate £15,000-£20,000 per annum in additional compensation related to clearance and wider benefits - No clearance required to apply, but eligibility for enhanced DV clearance is essential - Sanderson Government and Defence are partnered with a major organisation in the UK Defence and National Security space as they look to strengthen their engineering capability delivering into a highly secure government programme. This role can be based in London, Manchester or Cheltenham, and we are open to candidates ...
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        FEATURED

        Senior Software Engineer (£75k + benefits)

        Morson Edge
        City Centre, Manchester (M2), m1
        £65k - 75k per year + benefits
        Great opportunity for a Senior Software Engineer to join a private equity backed tech company in Manchester as they scale in 2026. You’d join a product-based squad within a larger engineering department and would be given the opportunity to be involved in all aspects of the systems you work on, from design through to deployment and supporting them in production. Each squad decides the methodologies and practices they use, as the business has created an experimental culture, following a build, measure and learn approach to get quick feedback and deliver valuable increments. The existing group are very open minded; they value teamwork over individual heroics and focus on engineering best practice like TDD, CI/CD and Pair Programming. * C#, .NET, React * REST APIs, Microservices, Event Driven Systems * AWS, Terraform, Docker * CI/CD, TDD, Pair Programming
        Great opportunity for a Senior Software Engineer to join a private equity backed tech company in Manchester as they scale in 2026. You’d join a product-based squad within a larger engineering department and would be given the opportunity to be involved in all aspects of the systems you work on, from design through to deployment and supporting them in production. Each squad decides the methodologies and practices they use, as the business has created an experimental culture, following a build, measure and learn approach to get quick feedback and deliver valuable increments. The existing group are very open minded; they value teamwork over individual heroics and focus on engineering best practice like TDD, CI/CD and Pair Programming. * C#, .NET, React * REST APIs, Microservices, Event Driven Systems * AWS, Terraform, Docker * CI/CD, TDD, Pair Programming
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        PREMIUM

        Senior Software Engineer

        Sanderson Government and Defence
        UK
        £50000 - £95000 per annum + Great benefits.
        Developing and deploying software which typically includes low level development (eg real-time software, drivers, embedded software etc.) and requires an understanding of the underlying hardware systems. * Ability to produce high-quality software * Modern software development methodologies such as Agile and Test Driven Development * Proven track record of successfully delivering high quality software solutions - What you will be doing (role duties and responsibilities) * High performance application design and development in C++ and related languages. * Managing technical tasks/projects and people * Be involved in product delivery, sometimes to challenging deadlines. * Customer-facing technical consultancy * Have a strong interest in expanding technical knowledge both in areas of core expertise and more generally. * Work towards gaining the experience required to take technical lead roles.
        Developing and deploying software which typically includes low level development (eg real-time software, drivers, embedded software etc.) and requires an understanding of the underlying hardware systems. * Ability to produce high-quality software * Modern software development methodologies such as Agile and Test Driven Development * Proven track record of successfully delivering high quality software solutions - What you will be doing (role duties and responsibilities) * High performance application design and development in C++ and related languages. * Managing technical tasks/projects and people * Be involved in product delivery, sometimes to challenging deadlines. * Customer-facing technical consultancy * Have a strong interest in expanding technical knowledge both in areas of core expertise and more generally. * Work towards gaining the experience required to take technical lead roles.
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        FEATURED

        Software Developer

        Oscar Associates (UK) Limited
        Warrington (WA1)
        £45000 - £50000 per annum
        I'm currently working with a specialist UK software provider that's looking to add a Software Developer to their development team to help support and enhance a suite of established products while contributing to the development of new solutions. This is a great opportunity for a developer who enjoys working across both desktop and web applications, solving complex problems, and supporting systems that are relied upon by organisations delivering critical services. * Completing unit testing before releasing new software or updates * Experience developing software within the Microsoft technology stack - This is a great opportunity to join a stable and established software company where you'll work on systems that support real-world processes used across the public sector. You'll have the chance to take ownership of development work, contribute ideas for improvements, and build deep ...
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        Lead Developer, .NET, C#, React, Azure, DevOps, Mainly Remote

        Carrington Recruitment Solutions Limited
        West End, Central London (W1), W1A 1AB
        From £80,000 to £89,000 per annum Good benefits
        Lead Developer, Full Stack Engineering, Azure, .NET, C#, React, Mainly Remote - We need a hands-on full stack Lead Developer who can also lead people, set standards and deliver real outcomes. Good understanding of Azure DevOps processes, in-depth understanding of Azure Resource Management. Lead Developer required for a fast growing and forward thinking Professional Services organisation. C#, .NET platform, JavaScript, HTML/CSS, Azure PaaS (Azure Functions, Azure Logic Apps, Cosmos DB, Azure App Service, ARM/Bicep templates), SharePoint and React - Applying modern DevOps and exploring emerging technologies such as artificial intelligence and machine learning. This is mainly remote, with occasional office time in Central London when genuinely needed. Please read in full before applying. This is not a role for someone who "just writes code".
        Lead Developer, Full Stack Engineering, Azure, .NET, C#, React, Mainly Remote - We need a hands-on full stack Lead Developer who can also lead people, set standards and deliver real outcomes. Good understanding of Azure DevOps processes, in-depth understanding of Azure Resource Management. Lead Developer required for a fast growing and forward thinking Professional Services organisation. C#, .NET platform, JavaScript, HTML/CSS, Azure PaaS (Azure Functions, Azure Logic Apps, Cosmos DB, Azure App Service, ARM/Bicep templates), SharePoint and React - Applying modern DevOps and exploring emerging technologies such as artificial intelligence and machine learning. This is mainly remote, with occasional office time in Central London when genuinely needed. Please read in full before applying. This is not a role for someone who "just writes code".
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        If youre a seasoned Senior Software Engineer passionate about building scalable solutions, and want your skills to make a real difference, wed love to hear from you. They are now looking for a Senior Software Engineerto take a key role in rebuilding and modernising their software landscape. Senior Fullstack Software Engineer UK Remote * Mentor engineers and foster a culture of collaboration and high performance - Are you ready to put your technical expertise to work in transforming services that directly improve lives across the UK? Our client provides emergency accommodation and vital support for some of the countrys most vulnerable people including survivors of domestic abuse, refugees, and individuals seeking asylum. Their mission is to create safe environments and deliver innovative solutions that protect and empower those most in need.
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        .NET Developer

        Hyperloop Recruitment
        Liverpool, Merseyside, L3 4AD
        £55,000
        Software Developer (.NET) Hyperloop are working with an established Liverpool-based client who are looking for a Software Developer (.NET) to join their growing team. Joining a small yet emerging team of like-minded developers, you will contribute to the design, development and maintenance of our clients' cutting-edge software platform and products, working on brand-new features and greenfield projects. The role would suit a mid/senior-level .NET focused Software Developer looking for an exciting next step in their career with 3+ years' commercial experience working on C#. £55,000 (DOE) Liverpool (hybrid) * 3+ years experience in software development focused on C#, .NET Core * MVC design patterns and practices * Full-stack skills working with HTML and JavaScript technologies * CSS / SASS * SQL Server or MySQL databases * MS Azure * Agile * CI/CD pipelines * Test-driven development * RESTful / SOAP APIs
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        My client is seeking a talented C#Senior Softwar Developer to join their Preston-based team. This role offers an exciting opportunity to lead projects, mentor junior developers, and work on high-impact, secure banking solutions. This role is ideal for developers with strong technical expertise who are looking to grow into leadership or team management responsibilities. * Opportunity to mentor and lead junior developers You will be a key contributor to web portal and API development, ensuring performance, security, and reliability in a dynamic environment. Key Responsibilities * Develop and maintain web portals using ASP.NET MVC / .NET Core * Design and integrate REST APIs with internal and third-party services * Implement secure authentication mechanisms (JWT, OAuth2, API Keys) * Connect applications to relational databases using Entity Framework Core (DbContext, LINQ, Migrations)
        My client is seeking a talented C#Senior Softwar Developer to join their Preston-based team. This role offers an exciting opportunity to lead projects, mentor junior developers, and work on high-impact, secure banking solutions. This role is ideal for developers with strong technical expertise who are looking to grow into leadership or team management responsibilities. * Opportunity to mentor and lead junior developers You will be a key contributor to web portal and API development, ensuring performance, security, and reliability in a dynamic environment. Key Responsibilities * Develop and maintain web portals using ASP.NET MVC / .NET Core * Design and integrate REST APIs with internal and third-party services * Implement secure authentication mechanisms (JWT, OAuth2, API Keys) * Connect applications to relational databases using Entity Framework Core (DbContext, LINQ, Migrations)
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        Senior .NET Developer (£70k + benefits)

        Morson Edge
        City Centre, Manchester (M2), m1
        £60k - 70k per year + benefits
        Great opportunity for a Senior .NET Developer to join a SaaS scale-up in Manchester. This role sits within the team responsible for developing their flagship software platform and as a Senior .NET Developer you'll be given the opportunity to build, test and ship super-fast in a team that cares about engineering best practice, pairing and continuous improvement. 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 across the globe. The technology department is made up of 5 product teams responsible for developing a suite of cloud based, web and mobile apps. Each team is cross-functional and works in a truly agile way, delivering small increments of value to their customers very frequently. * C#, .NET, REST APIs * Azure Cloud - Azure Functions, Logic Apps, Service Bus, CosmosDB
        Great opportunity for a Senior .NET Developer to join a SaaS scale-up in Manchester. This role sits within the team responsible for developing their flagship software platform and as a Senior .NET Developer you'll be given the opportunity to build, test and ship super-fast in a team that cares about engineering best practice, pairing and continuous improvement. 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 across the globe. The technology department is made up of 5 product teams responsible for developing a suite of cloud based, web and mobile apps. Each team is cross-functional and works in a truly agile way, delivering small increments of value to their customers very frequently. * C#, .NET, REST APIs * Azure Cloud - Azure Functions, Logic Apps, Service Bus, CosmosDB
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        Technical Lead Developer

        Pardoe Wray
        UK
        From £90,000 to £120,000 per annum Company Benefits
        Overview - We are seeking a Technical Lead / Senior Developerto join aimplementation team, delivering end-to-end client engagements. This role is a hands-on technical position responsible for deploying, configuring, and integrating the productwithin client Allegro environments, while supporting and training client teams to operate independently. * Provide technical troubleshooting across the delivery pipeline * Experience in a senior technical role, including mentoring or training teams - Key Responsibilities * Deploy and configuretest suites within client environments * Integrate the productwith client Allegro installations, including API connectivity and database schema mapping * Build and automate client-specific regression test suites using SpecFlow (Reqnroll) / Gherkin * Work with SQL and databases to validate test results and troubleshoot data issues * Deliver hands-on training to client test teams
        Overview - We are seeking a Technical Lead / Senior Developerto join aimplementation team, delivering end-to-end client engagements. This role is a hands-on technical position responsible for deploying, configuring, and integrating the productwithin client Allegro environments, while supporting and training client teams to operate independently. * Provide technical troubleshooting across the delivery pipeline * Experience in a senior technical role, including mentoring or training teams - Key Responsibilities * Deploy and configuretest suites within client environments * Integrate the productwith client Allegro installations, including API connectivity and database schema mapping * Build and automate client-specific regression test suites using SpecFlow (Reqnroll) / Gherkin * Work with SQL and databases to validate test results and troubleshoot data issues * Deliver hands-on training to client test teams
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        Full Stack Engineer

        Searchability (UK) Ltd
        London
        £50000 - £75000 per annum
        Due to continued growth, they're looking for a Full Stack Engineer with 3+ years' experience to take ownership across both frontend and backend development. * Experience building and deploying full-stack applications - Python, FastAPI, PostgreSQL, React, Next.js, AWS, Docker, Full Stack Development, Software Engineering, Real-Time Applications, Sports Analytics * Ownership across the full development lifecycle * Salary up to £75,000 * Hybrid working - 3 days per week in Waterloo, London * Python, FastAPI, PostgreSQL, React or Next.js * End-to-end ownership across frontend and backend - We're working with an ambitious AI-driven organisation building advanced analytics products within the sports sector. This is a role for someone who enjoys autonomy, thrives in a small team, and wants to help shape product and technical direction in a fast-evolving environment. * Hybrid working (3 days per week in Waterloo)
        Due to continued growth, they're looking for a Full Stack Engineer with 3+ years' experience to take ownership across both frontend and backend development. * Experience building and deploying full-stack applications - Python, FastAPI, PostgreSQL, React, Next.js, AWS, Docker, Full Stack Development, Software Engineering, Real-Time Applications, Sports Analytics * Ownership across the full development lifecycle * Salary up to £75,000 * Hybrid working - 3 days per week in Waterloo, London * Python, FastAPI, PostgreSQL, React or Next.js * End-to-end ownership across frontend and backend - We're working with an ambitious AI-driven organisation building advanced analytics products within the sports sector. This is a role for someone who enjoys autonomy, thrives in a small team, and wants to help shape product and technical direction in a fast-evolving environment. * Hybrid working (3 days per week in Waterloo)
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        Senior Software Engineer (C# / WPF)

        Oscar Associates (UK) Limited
        Oxford (OX1)
        £55000 - £60000 per annum + Annual Bonus
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        Lead .Net Developer x 2

        Hays
        London
        £800.0 - £850.0 per day + Up to £850pd Umbrella
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        I am currently working with a London-based Financial Services client who are actively seeking multiple Senior .Net Developers to work on a long-term, business-critical data-orientated project. * Extensive C# .Net Development experience ideally within financial services, on data-heavy projects. * Extensive SQL server experience - Must Have. * Solid experience in database modelling, performance tuning, and optimisation. * Thorough knowledge of application programming for data intensive applications on SQL Server using Stored Procedures / tSQL. * Good knowledge of cloud platforms, ideally AWS. * Good working knowledge of AI - Nice to have. * Knowledge of * Initial contract until end of year with extensions. * Up to £850pd Umbrella. * London-based hybrid working. If you're interested in this role, click 'apply now' to forward an up-to-date copy of your CV, or call us now.
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        Senior Software Engineer

        OTA Recruitment Limited
        Southwark, South East London (SE1), SE1
        From £75,000 to £110,000 per annum Plus attractive bonus on top
        Were looking for a Senior Software Engineer to join the Modelling & Data Engineering group at a rapidly expanding sports-technology business. * Developing high-quality, maintainable software using .NET technologies. * Experience collaborating with Data Scientists or Data Engineers. Salary: £75k-£110k (plus attractive bonus on top) Location: London or Leeds (relaxed about hybrid or remote working, if preferred) My client is a specialist provider of sports pricing and trading technology, developing advanced simulation-based models and risk tools that underpin the performance of major sports brands. Role Overview - This is a hands-on role in a fast-moving environment where youll help shape new modelling tools, improve existing systems, and contribute to the technical foundations that support the companys growth. What youll be working on
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        Software Engineer

        Fuel Recruitment
        South East
        From £50,000 to £60,000 per annum
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        As Senior Software Engineer, you'll be part of our experienced Software Engineering function, working in a cross-functional team, delivering and deploying critical software across a variety of business areas. Raytheon UK have a full time, perm opportunity for a Senior Software Engineer to join our specialist teams in Manchester, Gloucester or London working fully onsite. We have opportunities for Software Engineers at every level within a team, so your Recruiter will discuss the great opportunities for development or challenges we offer based off your professional profile. * Design and build software using industry best practice * Collaborate with stakeholders and other engineers Due to the interesting work we do and the sector this team is working in, we require all candidates to currently hold eDV clearance. Responsibilities
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        Lead .Net Developer

        Halian Technology Limited
        Central London (W1)
        From £75,000 to £85,000 per annum Plus bonus and benfits
        Senior / Lead .Net Mobile App Developer - £75,000 - £85,000 - Fully Remote - We are seeking an experiencedSenior / Lead .NET Backend Developerto join ourmobile applications development team. While the role is ideally suited to aLead .NET Developer,we would also consider an experiencedSenior .NET Developerwho is ready to step into a leadership role. Lead the design and development of scalable backend services and APIs supporting mobile applications. Collaborate closely with mobile developers, product teams, and platform engineers. Experience mentoring developers or contributing to technical leadership. Opportunity to lead backend development for mobile platforms - Overview - This role will provide technical leadership in the design, development, and optimisation of backend services andAPIsthat support modern mobile and enterprise applications.
        Senior / Lead .Net Mobile App Developer - £75,000 - £85,000 - Fully Remote - We are seeking an experiencedSenior / Lead .NET Backend Developerto join ourmobile applications development team. While the role is ideally suited to aLead .NET Developer,we would also consider an experiencedSenior .NET Developerwho is ready to step into a leadership role. Lead the design and development of scalable backend services and APIs supporting mobile applications. Collaborate closely with mobile developers, product teams, and platform engineers. Experience mentoring developers or contributing to technical leadership. Opportunity to lead backend development for mobile platforms - Overview - This role will provide technical leadership in the design, development, and optimisation of backend services andAPIsthat support modern mobile and enterprise applications.
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        Senior Software Developer

        Oscar Associates (UK) Limited
        Newcastle Upon Tyne (NE1)
        £60000 - £70000 per annum
        They are looking for a Senior Full Stack Engineer to play a key role in delivering the first iteration of a strategic cloud platform that will expand under a 'fail fast' innovation model. This is an excellent opportunity for a senior engineer who thrives in structured, security-focused environments and enjoys building clean, scalable systems from the ground up. You'll join a senior engineering team delivering a greenfield platform consisting of a .NET MAUI mobile application (iOS & Android), an Angular 21 web application, and Azure-hosted backend services built using clean architecture principles. * At least 5 years' commercial software engineering experience - Full Stack Engineer - UK (Remote) - £60k-£70k - I'm working with a UK-based organisation that is building a secure, offline-capable property visiting platform using modern Microsoft technologies. The Opportunity
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        Currently looking to recruit a Senior .NET Developer in data a product analytics. Were working with a Bristol based tech co. a leading worldwide supplier of software to health insurers, with an extensive platform consisting of Core back office automation, Open API and integration suite and Digital solutions serving the insurance value chain. Hybrid working role - The role will combine hands-on feature development in the core stack with a strong focus on data analysis, instrumentation, and product analytics. The successful candidate will help establish the businesses product analytics capability from the ground up, enabling the Product Manager and wider business to make data-driven decisions on roadmap, feature design, and resource allocation. You will work as a core member of the Scrum team (3-week sprints) building and enhancing the policy and claims management platform for health ...
        Currently looking to recruit a Senior .NET Developer in data a product analytics. Were working with a Bristol based tech co. a leading worldwide supplier of software to health insurers, with an extensive platform consisting of Core back office automation, Open API and integration suite and Digital solutions serving the insurance value chain. Hybrid working role - The role will combine hands-on feature development in the core stack with a strong focus on data analysis, instrumentation, and product analytics. The successful candidate will help establish the businesses product analytics capability from the ground up, enabling the Product Manager and wider business to make data-driven decisions on roadmap, feature design, and resource allocation. You will work as a core member of the Scrum team (3-week sprints) building and enhancing the policy and claims management platform for health ...
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        Lead Software Developer

        Oscar Associates (UK) Limited
        Warrington (WA1)
        £65000 - £70000 per annum
        Full Stack Technical Lead - Remote - £65k-£70k (DOE) I'm working with an exciting organisation that is looking for a Full Stack Technical Lead to take ownership of modern cloud-based applications and lead development within a defined architectural framework. * 7+ years' commercial software engineering experience * 2+ years operating as a Technical Lead This is an excellent opportunity for a senior full-stack engineer who enjoys remaining hands-on while influencing architecture, enforcing engineering standards, and driving secure development practices across a high-performing team. Key Responsibilities * Designing and developing scalable backend services using .NET 10.0.2 and ASP.NET Core Web APIs * Building and maintaining Angular 21 front-end applications using DevExpress DevExtreme v25 components * Leading secure, Azure-native cloud implementations
        Full Stack Technical Lead - Remote - £65k-£70k (DOE) I'm working with an exciting organisation that is looking for a Full Stack Technical Lead to take ownership of modern cloud-based applications and lead development within a defined architectural framework. * 7+ years' commercial software engineering experience * 2+ years operating as a Technical Lead This is an excellent opportunity for a senior full-stack engineer who enjoys remaining hands-on while influencing architecture, enforcing engineering standards, and driving secure development practices across a high-performing team. Key Responsibilities * Designing and developing scalable backend services using .NET 10.0.2 and ASP.NET Core Web APIs * Building and maintaining Angular 21 front-end applications using DevExpress DevExtreme v25 components * Leading secure, Azure-native cloud implementations
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        .NET Core Backend Developer

        EXL Service
        The City, City of London (EC3), EC3N 1DD
        A competitive salary with a generous bonus and additional benefits
        Role Title:.NET Core Backend Developer EXL is seeking an experienced.NET Core Backend Developerto join our Analytics team in London. * Design, develop and maintain backend services using .NET and .NET Core EXL was founded in 1999 with the core values of innovation, collaboration, excellence, integrity and respect. You will design and build secure, scalable backend services and RESTful APIs that power enterprise-grade SaaS and analytics solutions, primarily within theinsurance domain. * 5+ years of experience as a .NET developer * Strong expertise in .NET and .NET Core with solid object-oriented programming knowledge - EXL (NASDAQ: EXLS)is a global data and artificial intelligence ("AI") company that offers services and solutions to reinvent client business models, drive better outcomes and unlock growth with speed. EXL harnesses the power of data, AI, and deep industry knowledge to transform businesses, ...
        Role Title:.NET Core Backend Developer EXL is seeking an experienced.NET Core Backend Developerto join our Analytics team in London. * Design, develop and maintain backend services using .NET and .NET Core EXL was founded in 1999 with the core values of innovation, collaboration, excellence, integrity and respect. You will design and build secure, scalable backend services and RESTful APIs that power enterprise-grade SaaS and analytics solutions, primarily within theinsurance domain. * 5+ years of experience as a .NET developer * Strong expertise in .NET and .NET Core with solid object-oriented programming knowledge - EXL (NASDAQ: EXLS)is a global data and artificial intelligence ("AI") company that offers services and solutions to reinvent client business models, drive better outcomes and unlock growth with speed. EXL harnesses the power of data, AI, and deep industry knowledge to transform businesses, ...
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