25 of 25 Senior Applications Developer Jobs

technology implementation, integration, optimization and customization. We enable some of the most well-known companies, nonprofits and federal agencies in the United States to intelligently plan and develop their applications, modernize their infrastructure and manage their data. We are currently seeking an experienced, skilled, and passionate Senior Web Application Developer to support development projects at … solutions. Ideal candidates possess the technology skills, curiosity, and experience to drive web development through all parts of the application lifecycle. Role and Responsibilities: Maintain, modernize, and refactor web applications for improved scalability, performance, and maintainability. Develop clean, efficient, and modular code following best practices in React.js, Node.js, JavaScript, HTML, and CSS. Refactor and optimize legacy code, improving readability … reducing technical debt, and enhancing maintainability. Enhance data-driven applications, building dashboards, automated workflows, and visualizations. Optimize SQL queries and database performance while ensuring security and best practices (SQL Server and Oracle). Collaborate with stakeholders to define technical requirements and implement scalable, modern solutions. Work within Agile methodologies (Scrum, XP, Kanban) to deliver high-quality solutions efficiently. Conduct More ❯

in our core values. We're a high-energy, high-growth team and we love to win. Senior Application Developer The Senior Application Developer will design, develop, refactor, enhance, test and evaluate, and support software applications currently hosted on-premises to be hosted within the AWS GovCloud instance compliant with FBI … appropriate solution. Candidates shall be skilled in multiple web application languages, reverse engineering, and have a strong background in building scalable, user intuitive, high-quality and high performing web applications ranging from a high mid-level and a senior. The Electronic Surveillance (ELSUR) Logistics Technology Unit (ELTU) application enhancements or modifications may include business and process changes to ELTU … applications/systems as well as coordination with other integrated and non-ELTU software systems. The contractor shall work alongside infrastructure, development, and managerial team members to troubleshoot and resolve issues. In this role, you will: Support the Government's effort to obtain and maintain an authority-to- operate (ATO) and protect the security posture of the program systems More ❯

Title: Advanced Sr IT Applications Developer KBR is a global provider of differentiated, professional services and technologies delivered across a wide government, defense, and industrial base. Drawing from its rich 100-year history and culture of innovation and mission focus, KBR creates sustainable value by combining engineering, technical, and scientific expertise with its full life cycle capabilities … to date with the latest web development trends. This role involves providing application software development services or technical support for defined projects. Responsibilities include developing program logic for new applications, modifying and analyzing existing applications, coding, testing, debugging, documenting, implementing, and maintaining software applications. The role requires experience and knowledge of standard concepts within the field, with core … Job Responsibilities Analyzing possible solutions using standard procedures while developing advanced skills Performing assignments requiring experience and knowledge of standard concepts within their field Developing program logic for new applications, modifying, analyzing existing logic, coding, testing, debugging, documenting, implementing, and maintaining software applications Providing application software development services or technical support for defined projects Making key system design More ❯

Title: Advanced Senior IT Applications Developer KBR is a global provider of differentiated, professional services and technologies delivered across a wide government, defense and industrial base. Drawing from its rich 100-year history and culture of innovation and mission focus, KBR creates sustainable value by combining engineering, technical and scientific expertise with its full life … our joint ventures), with customers in more than 80 countries, and operations in 40 countries, across two synergistic global businesses. Job Description We are seeking a highly skilled Senior Dotnet Developer with expertise in Blazor to support our team of developers in designing and implementing complex web applications. The successful candidate will have a proven track … procedures while developing advanced skills Under general supervision, and occasional direct supervision, performs assignments requiring experience and knowledge of standard concepts within their field Develops program logic for new applications, modify, and analyze existing application logic. Codes, tests, debugs, documents, implements, and maintains software applications Provides application software development services or technical support, typically for a defined project More ❯

SUMMARY Reporting to the R&D Programme Manager, the Lead Software Application Developer will guide the software development team in creating and maintaining scalable, high-performance software applications that meet the needs of the business, powering it’s Mass Spectroscopy analytical instrumentation. This role requires hands-on development skills, leadership and mentoring capabilities, a deep understanding of … delivery of functionality within project timeframes and scope. • Collaborate with project managers to identify and mitigate potential risks in the development cycle. • Architect, design and develop high-quality, scalable applications using C#, .NET framework and related technologies. • Maintain and enhance existing applications. • Write clean, maintainable, and efficient code in alignment with best practice and coding standards. • Perform code reviews … to ensure quality and adherence to standards. • Ensure software applications are thoroughly tested and perform as expected across different environments. • Provide leadership and technical guidance for resolution of complex technical issues and reported bugs. • Provide technical guidance and recommendations on tools, frameworks, and technologies to optimize the software development processes. • Stay updated on the latest industry trends, programming languages More ❯

Duties and Responsibilities: • Web-based programming using XML/HTML/JavaScript • Developing .NET applications with C# and Visual Studio • Model View Controller (MVC) development • Performing code reviews, unit testing, and quality control testing on all products prior to release • Developing and integrating business intelligence and data visualization techniques and tools into • the application to enable users to analyze … experience plus a Master s degree OR 8+ years experience plus a Bachelor s degree. • Experience with web-based programming using XML/HTML/JavaScript • Experience developing .NET applications with C# and Visual Studio • Software/system development lifecycle • SQL Database Management System and programming, plus relational database concepts • Experience with memory management, caching and performance management • MS More ❯

Jobs Senior Applications Developer Apply Now Salary Up to £500 per day Expires 08/07/2025 Location England, Essex, Chelmsford Job Type Interim Senior Applications Developer Contract: 4 Months, Temporary Working Hours: Full-Time Salary: £384.14 PAYE/£500.00 Umbrella, daily rate Closing Date: Monday 7th July … Understanding of application lifecycle management (ALM) in Power Platform Knowledge of JSON, Power Fx, JavaScript, HTML and SQL. Qualification or high level of demonstrable capability with relevant vendor business applications Desirable: Able to demonstrate a clear understanding of, and capability to work within, relevant ICT related standards including HMG Security Policy Framework, IITIL V3, ISO/IEC 38500, ISO … to our success. If you have any queries regarding this role, or require anything further, please email OR To apply please click the Apply Now link below. Apply forSenior Applications Developer This role expires08/07/2025. Apply Now Help us break the news - share your information, opinion or analysis word word word word word word More ❯

Senior Applications Developer Contract: 4 Months, Temporary Working Hours: Full-Time Salary: £384.14 PAYE/£500.00 Umbrella, daily rate Closing Date: Monday 7th July 2025 Working Arrangements: Hybrid Location: Chelmsford, Essex About the role Essex County Council is ambitious and by 2030 it will be one of the most forward looking, effective and financially sustainable … by experience in a relevant subject. • Hold relevant Microsoft certifications such as PL-100: Power Platform App Maker, PL-200: Power Platform Functional Consultant, PL-400: Power Platform Developer, PL-600: Power Platform Solution Architect. • Proven experience with Microsoft Power Automate Desktop and DevOps. • Solid understanding of Microsoft 365, Dataverse, and Azure Services … Understanding of application lifecycle management (ALM) in Power Platform • Knowledge of JSON, Power Fx, JavaScript, HTML and SQL. • Qualification or high level of demonstrable capability with relevant vendor business applications Desirable: • Able to demonstrate a clear understanding of, and capability to work within, relevant ICT related standards including HMG Security Policy Framework, IITIL V3, ISO/IEC 38500, ISO More ❯

by experience in a relevant subject. Hold relevant Microsoft certifications such as PL-100: Power Platform App Maker, PL-200: Power Platform Functional Consultant, PL-400: Power Platform Developer, PL-600: Power Platform Solution Architect. Proven experience with Microsoft Power Automate Desktop and DevOps. Solid understanding of Microsoft 365, Dataverse, and Azure Services … Understanding of application lifecycle management (ALM) in Power Platform Knowledge of JSON, Power Fx, JavaScript, HTML and SQL. Qualification or high level of demonstrable capability with relevant vendor business applications Desirable: Able to demonstrate a clear understanding of, and capability to work within, relevant ICT related standards including HMG Security Policy Framework, IITIL V3, ISO/IEC 38500, ISO More ❯

capable of achieving incredible things. We're looking for an experienced Senior React Native Developer to join our small, focused Scrum team working on mobile applications for both iOS and Android. You'll be responsible for building new apps and maintaining existing ones using React Native with TypeScript and GraphQL. You'll need a strong … is a temporary role, likely lasting around 6 months, with a view to extending beyond this if needed. WHAT YOU'LL DO: Design, develop, and maintain cross-platform mobile applications using React Native Build new applications and features, while supporting and improving existing apps Consume GraphQL APIs in the mobile stack Collaborate with designers and backend engineers to … GraphQL APIs Good knowledge of iOS (Swift/Objective-C) and Android (Kotlin/Java) Native Development for platform-specific customisation Proven track record of delivering high-quality mobile applications to production Experience working in a Scrum/Agile team environment Familiarity with mobile testing, debugging, and performance optimisation tools Clear understanding of app publishing processes on both App More ❯

Flynn Group of Companies , North America's leading building envelope contractor is looking to hire a Sr. Web Application Developer to work in our Toronto, Canada office. This is a permanent relocation opportunity to relocate to Canada. In-house, licensed Immigration team at Flynn who will assist you with the following: -Work permit application (at no cost to … mix of Java, Swift, and Xamarin for our mobile apps. Responsibilities Will be a core member of the team to design, architect, develop, code reviews and test our key applications Design new application features and integrations in collaboration with team members to deliver complex changes Design and implement scalable and resilient cloud solutions with security and disaster recovery in … as required Participate in a rotating weekly on-call schedule What we are Seeking 10+ years of recent experience, with at least 5 years in a Sr. Web Developer or similar senior role Post-secondary education in Computer Science/IT or related field Experience in .NET/.NET Framework and C# Experience in entity framework More ❯

The Analytical Calculation Engine (ACE) Development Team is a group within Citi Financial Risk Technology, responsible for developing and implementing the applications used for derivatives credit risk and exposure calculations Firm-wide. The team's primary focus is the … development, testing, deployment, and maintenance of the production derivatives credit risk application, used for internal risk management and regulatory capital purposes. The Counterparty Credit Risk Senior Application Developer position is a senior role that will interface closely with Quant and Front Office technology teams to integrate pricing models and workflow enhancements within the ACE … There will be exposure to a wide range of technological frameworks, including distributed computing architecture. The role will involve tasks such as: Developing and maintaining the Counterparty Credit Risk applications, leveraging in-house Python and C++ model libraries. Supporting and improving CI/CD (build, testing and release management) of the credit risk application. Contributing to the codebase to More ❯

Senior Application Developer - Data page is loaded Senior Application Developer - Data Bewerben locations London, United Kingdom time type Full time posted on Gestern ausgeschrieben job requisition id J-047731 IDEXX is looking for a Senior Data Engineer to join the Veterinary Software team in London! This is an exciting opportunity … and secure movement of legacy and modern systems. As a senior engineer, you'll design, develop, and optimise scalable and efficient data pipelines integrating PHP, and C applications using .NET framework backend services and React frontends. You'll utilise tools such as Terraform for infrastructure-as-code ( IaC ), AWS (Lambda, EC2, EKS, Step Functions, VPC etc.) for … of Git, CI/CD pipelines, and containerization (Docker/Kubernetes). Experience working in environments with AI/ML components or interest in learning data workflows for ML applications . Bonus if you have e xposure to Kafka, Spark, or Flink . Experience with data compliance regulations (GDPR). What you can expect from us: Salary More ❯

Job Description Who we are looking for. We are looking for a highly skilled Senior Application Developer/Lead with 10+ years' experience to join our Portfolio Analytics Technology Solutions team. The candidate will play a key role in designing and optimizing software applications, providing innovative solutions and co-ordinate work effort with other teams.The … you want to make your mark in global asset management and make an impact on the world's investors What you will be responsible for Design, develop and maintain applications leveraging Python, PySpark, and SQL leveraging cloud native architecture principles and technologies. Lead the design and development of scalable and robust software application architecture, ensuring alignment with business goals More ❯

Senior Mobile and Wallet Android App Developer - GDS - G7 The Government Digital Service (GDS) is the digital centre of government - we are responsible for setting, leading and delivering the vision for a modern digital government. Our priorities are to drive a modern digital government, by: joining up public sector services harnessing the power of AI for … solve some of the nation's highest-priority digital challenges, helping millions of people access services they need You'll join the GOV.UK One Login programme as a Senior Android Developer. You'll build and maintain the GOV.UK One Login Android app, as part of a multidisciplinary team. The app is written in Kotlin with XML layouts and … Jetpack Compose, with support going back to Android 10. As a SeniorAndroid App Developer,you'll: work as part of a multi-disciplinary agile team, getting involved with every part of the lifecycle of the application, from user research to releasing the application build accessible Android apps, taking responsibility for the quality of code you produce build automated More ❯

of the nation's highest-priority digital challenges, helping millions of people access services they need Job description You'll join the GOV.UK One Login programme as a Senior Android Developer. You'll build and maintain the GOV.UK One Login Android app, as part of a multidisciplinary team. The app is written in Kotlin with XML layouts and … Jetpack Compose, with support going back to Android 10. As a Senior Android App Developer, you'll: work as part of a multi-disciplinary agile team, getting involved with every part of the lifecycle of the application, from user research to releasing the application build accessible Android apps, taking responsibility for the quality of code you … code review and version control experience working in a collaborative environment, and an understanding of the benefits of agile and multi-disciplinary approaches In addition to the above Senior Developers will also: experience supporting others in applying modern development standards experience in management, helping colleagues with their career development and coaching more junior staff members More ❯

iOS/Android Mobile Apps Developer Guildford, Surrey (Office-Based) £70000 - £120000 + 25% Bonus, 10% Pension, Private Medical. Must haves: - Must work 5 days per week in the office in Guildford. - Must have Native App examples for enterprise organisations live in the App Store. Your new company This leading Software provider are looking to bolster their engineering … team an Mobile Apps Developer to work on iOS and Android native products. You will be working in their state-of-the-art offices in the heart of Guildford 5 days per week, close to the University and with excellent transport links to London and the surrounding areas in Surrey. You'll join a well-established business with … new role Working for a business that is recognise as the dominant player in their industry, you'll be contributing to the Development of 2 best-in-class existing applications for iOS and Android platforms, as well as leading the charge for exciting new cross platform app developments for the organisation. You'll work end to end on projects More ❯

solve some of the nation's highest-priority digital challenges, helping millions of people access services they need. Job description We have vacancies for both Mobile Developers and Senior Mobile Developers. We are running a single campaign and will offer one of the two roles based on performance at interview. As a Developer or Senior … you can expect to have a central role in multidisciplinary teams building the future of government services. We are building in two main areas. Native iOS and Android applications power our identity proving service, allowing for a quick, easy and highly trusted way to prove your identity to government. We also building a new Wallet application, allowing users … the engineering community. All whilst doing work that improves government services for millions of users across vital services. You'll join the GOV.UK One Login programme as a Senior iOS Developer. You'll build and maintain the GOV.UK One Login iOS app, as part of a multidisciplinary team. The app is written in Swift with UIKit, with support More ❯

Are you a Senior Cloud Application Developer looking to … work for a company that makes products that save lives? If so, then this is the role for you! My client is a global leader in Fire & Security prevention applications based in Coventry. This job will be responsible for development and maintenance of their AWS-based SaaS platform as well as supporting and enhancing existing cloud applications. This is … application development, particularly in .NET, Angular, and serverless frameworks. A key role which will see the successful candidate have skills as a DevOps Engineer as well as a Cloud Applications Developer. Hybrid working available. Key skills & experience required for Senior Cloud Application Developer based in Coventry include: Extensive experience with Python Strong AWS experience and More ❯

Are you a Senior Cloud Application Developer looking to … work for a company that makes products that save lives? If so, then this is the role for you! My client is a global leader in Fire & Security prevention applications based in Coventry. This job will be responsible for development and maintenance of their AWS-based SaaS platform as well as supporting and enhancing existing cloud applications. This is … application development, particularly in .NET, Angular, and serverless frameworks. A key role which will see the successful candidate have skills as a DevOps Engineer as well as a Cloud Applications Developer. Hybrid working available. Key skills & experience required for Senior Cloud Application Developer based in Coventry include: Extensive experience with Python Strong AWS experience and More ❯

My client in Essex are looking to appoint a talented Senior Applications Developer on a Contract basis. This role will lead, monitor, optimise and continuously improve the delivery of software components so that the organisation can provide simple user experiences and achieve better outcomes for people and businesses. What's on offer: Salary: £500 per … and optimising software components that simplify user experiences Writing clean, accessible, open-by-default code that's easy to maintain and reuse Managing the end-to-end delivery of applications that support real outcomes for communities and businesses Collaborating with technical and non-technical stakeholders to ensure solutions meet user needs and business goals About you: You will have … SQL. Local Authority experience is essential How to apply Once your CV is received, if you are successful you will be contacted. Due to the extremely high number of applications, it may not be possible to contact every applicant. As such, if you are not contacted please assume you have not been successful on this occasion. About Spencer Clarke More ❯

About the role: As part of our team, you will focus on developing best-in-class mobile applications using React Native. Our apps are built with a modern tech stack that emphasizes cross-platform functionality while maintaining native performance and feel. Experience with native iOS/Android development is highly valued as it enables deeper platform integration and optimization. … for continuous learning Excellent communication and collaboration abilities A focus on producing high-quality code and exceptional user experiences If you are a motivated and talented React Native developer who … thrives in a collaborative environment and has experience with native mobile development, we would love to hear from you. Join our team and contribute to building cutting-edge mobile applications that make a difference. Please include examples of your work or links to your portfolio with your application. More ❯

iOS/Android Mobile Apps Developer A high number of candidates may make applications for this position, so make sure to send your CV and application through as soon as possible. Guildford, Surrey (Office-Based) £70000 - £120000 + 25% Bonus, 10% Pension, Private Medical. Must haves: - Must work 5 days per week in the office in Guildford. … Native App examples for enterprise organisations live in the App Store. Your new company This leading Software provider are looking to bolster their engineering team an Mobile Apps Developer to wor... JBLK1_UKTJ More ❯

Job Description iOS/Android Mobile Apps Developer Guildford, Surrey (Office-Based) £70000 - £120000 + 25% Bonus, 10% Pension, Private Medical. Must haves: - Must work 5 days per week in the office in Guildford. - Must have Native App examples for enterprise organisations live in the App Store. Your new company This leading Software provider are looking to bolster … their engineering team an Mobile Apps Developer to wor... ZIPC1_UKTJ ... More ❯

Are you a Senior Cloud Application Developer looking to … work for a company that makes products that save lives? If so, then this is the role for you! My client is a global leader in Fire & Security prevention applications based in Coventry. Make sure to apply with all the requested information, as laid out in the job overview below. This job will be responsible for development and maintenance More ❯