51 to 75 of 127 Permanent Senior Software Developer Jobs

OASYS, INC., a Leading-Edge Government contractor, is seeking applicants for a Senior Software Developer position to join a diverse, multi-disciplined team at Fort Sill in the Lawton, Oklahoma area. With several offices across the Unites States engaging in the defense, cyber, and commercial fields, OASYS, INC. provides responsive, cost-effective engineering, scientific, and IT solutions. … Position Description: The Senior Software Developer will work as part of a S/W team in writing software code for models and simulations and perform vulnerability research of radio frequency (RF)/network protocols, software, and hardware technology used in customer systems. Candidate will also assist in the development of novel Cybersecurity and Electro … systems, open source and proprietary network protocols, and user space applications. Researching current and future cyber security threats against military systems. Minimum Requirements: 10+ years of professional experience with software development is preferred S/W Engineering Development Life Cycle experience Significant programming ability in C++, Python, and/or other equivalent languages Experience mentoring a technical development team More ❯

My client, a global fintech company disrupting the world of embedded finance, is seeking a Senior Software Developer to join their team. This is paying a market leading salary + benefits. It is a hybrid role and you will need to be in their Atlanta office 1-2 days per week (Remote will also be considered). … Company overview A global embedded financing platform for many of the world's leading e-commerce sites, tech companies, and payment services providers. Their software platform and APIs enable our partners to offer flexible financing products, in their desired branding, to their merchant base. Role overview We are seeking a Senior Software Developer with expertise in More ❯

Senior Developer | Chesterfield | 3 days office T&D | Bonus | 25 days | Co. Pension THE COMPANY Major IT & Digital are proud to be partnering with a leading international business with over 30 years industry experience delivering industrial IT solutions across both manufacturing and infrastructure businesses. Successfully achieved Investors in People award for the last 12 years and continue to … invest in self-development for all internal teams. My clients operates the software development arm of the business from a Chesterfield location. Due to the nature of the work involved you will be required to attend the Chesterfield office 3 days per week and 2 days working from home. THE ROLE As part of continued expansion within the software development team my client has immediate requirements for a senior software developer to support the development of new features, new applications and API integrations. This is an exciting opportunity to join a well established development team with at least 5 years commercial experience Iin developing .NET applications and features. You will address customer issues and maintain More ❯

you up for a challenging role where you'll tackle complex problems at a world-class level? If so, we're excited to offer a fantastic opportunity for a Senior Software Developer to join our team at Sunbelt Rentals UK. It's our vision to own the future of rentals and our mission to deliver a world … class experience. As a Senior Software Developer, you will be responsible for maintaining and developing both internal and customer facing, business critical and innovative applications, in both new and legacy technologies where required, and contribute to the architectural designs where necessary. You will also provide technical support over these applications to ensure any faults are resolved quickly More ❯

Senior Software Engineer (React Native Mobile App Developer) Senior Software Engineer (React Native Mobile App Developer) A bit about Net World Sports Join Net World Sports on our mission to become the world's leading sports equipment retailer. Nothing excites us more than finding hungry, talented individuals and unleashing them in a team 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 grasp of Native Mobile More ❯

Senior Software Developer - Companies House - HEO The basic salary is £40,398 with an additional, non-pensionable digital allowance of up to £11,000. Published on Full-time (Permanent) The basic salary is £40,398 with an additional, non-pensionable digital allowance of up to £11,000. Published on 23 July 2025 Deadline 10 August 2025 Location … passion for delivering user focused digital services and using the latest technology to deliver solutions to a global audience of millions? Are you enthusiastic about clean code, well designed software and mentoring others to enable them to work at their best? If the answer to the above is yes, we would love you to join us and be part … of our team to help us build the future of our Digital Services! We are looking for Software Developers with Java/Spring and/or Typescript/Node.js experience. Our current technology stack is: Java, Spring, Typescript, Node.js, Kafka, MongoDB, Oracle, AWS, Docker. Companies House offers a flexible and welcoming culture that promotes a healthy work life balance More ❯

Senior Technical Java and C# .net Software Developer We are currently recruiting a Java with C# .net Senior Software Developer ?" who can be the lead in the team. You must have at least 5 to 7 years proven track record of developing software with Java and C# .net framework coupled with SQL Server. … retail business acumen, and customer focus. · Provide governance for troubleshooting complex system issues as necessary · Develop or contribute to business cases, roadmaps and proposals which may include presentations to senior management. · Collaboration with Business, Technical, and Security Architects, to manage risk identification and risk mitigation tactics associated with the designs. Role-specific knowledge: · 5+ years of senior technical … lead. · 5+ years of strong hands-on experience as a developer working on JAVA or .NET Framework standards and technologies - C#.NET, ASP.NET, AngularJS, SQLServer, Web Services, Cloud Platforms, AJAX, JQUERY, XML/JSON, HTML, CSS · Retail/digital technology experience is essential · Experience in SalesForce Service and Marketing Clouds · Safety Knowledge: · Provides a consistent outstanding role model in relation More ❯

Senior Back-End Software Developer (C#, .NET, APIs, Azure, MACH, SQL) £60-72,000 based on experience Are you passionate about building robust, scalable back-end systems that power meaningful change? Join a leading non-profit organisation as a Senior Back-End Software Developer , where your technical expertise will directly contribute to impactful, mission More ❯

Senior Software Developer C#, .NET Core, Blazor, SQL Server Salary up to £65k Hybrid role - 2 days per week on-site in Warwick 25 days holidays plus bank holiday Opportunity to grow your career Call 0771 998 3823 or email to apply Based on the outskirts of Warwick we are a well established software house that … has received some big client wins so are now looking for senior developers to join the team We are a small but highly skilled team of software developers working on several greenfield projects. We pride ourselves on providing the best quality and service to our clients. We are long established in the area and count some huge names … amongst our client base. Responsibilities... Your role will centre on performing problem solving, conceptual skills, solving of production issues translating high level requirements from the business into software solutions. As a developer you will also be expected to keep abreast of new technologies and suggest any technologies you feel could work if implemented to current and new projects. More ❯

Senior Software Developer C#, .NET Core, Blazor, SQL Server Salary up to £65k Hybrid role - 2 days per week on-site in Warwick 25 days holidays plus bank holiday Opportunity to grow your career Call (phone number removed) or email (url removed) to apply Based on the outskirts of Warwick we are a well established software house that has received some big client wins so are now looking for senior developers to join the team We are a small but highly skilled team of software developers working on several greenfield projects. We pride ourselves on providing the best quality and service to our clients. We are long established in the area and count … huge names amongst our client base. Responsibilities... Your role will centre on performing problem solving, conceptual skills, solving of production issues translating high level requirements from the business into software solutions. As a developer you will also be expected to keep abreast of new technologies and suggest any technologies you feel could work if implemented to current and More ❯

Senior Software Developer The Role: This is a highly varied role giving the successful candidate the opportunity to work across multiple projects and at all stages of the Software Development Lifecycle. Whilst focused on software development, this role also provides the opportunity to participate in software design at all levels. This will include work … services, including our upcoming AI Assurance service offering. Engineering Services – Delivery of engineering services on behalf of clients, assisting them in the development of their solutions. Key Responsibilities: Leading Software Development Projects Act as part of a multidisciplinary team to develop products and services. This will include Systems Engineers, Security Engineers, Product Managers and others as required. Support the … wider team in project planning, requirements definition and requirements analysis. Lead software design, development, testing, deployment and maintenance for a range of AI and Computer Vision products. Providing Software Engineering Subject Matter (SME) Expertise Act as part of multidisciplinary teams in delivering engineering services to Synoptix clients. Provide technical documentation, briefings and presentations to internal and external stakeholders More ❯

Senior Software Developer in Test Based at client locations, working remotely, or based in our Godalming or Milton Keynes offices. Salary Negotiable, DoE, plus company benefits. About Us Triad Group Plc is an award-winning digital, data, and solutions consultancy with over 35 years' experience primarily serving the UK public sector and central government. We deliver high … products, with systems to track unsafe products Powering systems that help the government monitor and reduce greenhouse gas emissions from commercial transport Role Summary We are seeking an experienced Software Developer in Test to lead the development and implementation of robust test automation frameworks. This role is ideal for a self-driven individual with a strong background in … Cypress, and Selenium WebDriver, and the ability to work independently from the ground up. You will play a key role in ensuring the quality, accessibility, performance, and security of software products through comprehensive automated testing strategies. Working closely with cross-functional teams in an Agile environment, you'll be instrumental in driving continuous improvement in test practices and delivering More ❯

Senior Software Developer - PHP/Laravel Maidstone, KentSalary: Up to £55,000Full-time | Permanent | Office-based (with some flexibility) Are you a Senior Developer with strong Laravel experience Looking to lead complex projects and mentor others in a stable, growing team? We are recruiting on behalf of a well-established company in Maidstone, Kent, who … are expanding their internal development team. This is a hands-on senior role where you will take ownership of Laravel-based systems, shape architecture, and guide the development of scalable applications. The Role Design and build new web application features using PHP and Laravel Lead technical decision-making and influence architecture Work with stakeholders to gather requirements and develop More ❯

Senior Software Architect (Developer Experience) Department: Software Engineering Employment Type: Permanent - Full Time Location: Remote, UK Description The Senior Software Architect will play a strategic, high-visibility role within Hazelcast. You will serve as a thought leader and technology evangelist for Hazelcast, influencing architecture across our ecosystem, our customer base, and the broader developer … with internal stakeholders including Engineering , Product , Marketing , and Field Teams to align product vision with real-world applications and customer needs. WHAT YOU HAVE 10+ years of experience in software architecture or senior technical roles, ideally with experience in distributed systems, high-performance computing, or data platforms. Proficiency in Java , including deep understanding of the JVM . Solid More ❯

Are you an experienced .Net (C#) Developer, looking to take on a Lead Software Engineering role in a growing SaaS product company ? Keen to grow your technical skills around .Net 8, assist the CTO directly with the adoption of the latest AI/LLM dev tools (Cursor, v0) & act as lead/mentor to a Dev' team? If … yes to the above & you'd like to join a growing, recently invested in, actually bringing offshore, back onshore, UK Software company – we'd like to speak with you! Job title: Lead Software Developer or Senior Software Developer looking for a step up to Lead (we would need to see some small team Lead … package. We can be somewhat flexible though - so please just get in touch. You'll have the full support of an Agile Scrum Master, excellent technical product team & obviously software engineers in your team. Our tech stack, below. But, in the main, if you have solid experience in .Net (C#) at a senior or lead level, please get More ❯

Senior Software Developer The Role: This is a highly varied role giving the successful candidate the opportunity to work across multiple projects and at all stages of the Software Development Lifecycle. Whilst focused on software development, this role also provides the opportunity to participate in software design at all levels click apply for full More ❯

Senior Software Developer - Remote up to £85,000 per annum Full Time Mon-Fri Our Client provide remote diagnostic solutions and services to the automotive industry. They offer cutting-edge, expert diagnostics using both after-market and original equipment manufacturer tools to provide safe and accurate repairs. The company was founded in 2010 and is headquartered in … Plano, TX with UK offices in Peterlee and Bedfordshire. As more automotive software technologies emerge, including autonomous driving, advanced diagnostics, vehicle connectivity, digital cockpits the Company aims to gain a first-mover advantage by developing software solutions with the help of automotive software engineers. If the idea of making an impact on a project lifecycle sounds appealing … a key role within the IT team you will be responsible for the design, implementation and testing of the backend components that empowers customer and operational functions. During our software development life cycle, you will be expected to work with the rest of the team as well as a wider business including our offices in the US, completing development More ❯

Senior Full Stack Software Developer Summary Lead Forensics is a leading SAAS company with products in the B2B sales and marketing space. We're seeking a senior full stack software developer (8+ years' experience) to add to the teams that build our customer facing products. You'll be iterating quickly on our modern tech … assurance. An understanding of how to build systems that perform well at scale. Enthusiasm for building secure systems and implementing security best practices. Enthusiasm for driving high standards in software development and working with like-minded people towards achieving ever higher levels of efficiency and performance. For more senior applicants, experience of technically leading feature development work through More ❯

Senior Software Developer - Hybrid (3 Days Onsite) Feeling Stuck in Your Current Role? Ready to Step Up to Senior? If you're eager to take that next step and move into a senior role, this could be your chance! We're working with an exciting client in the early stages of a major project, involving … extensive migrations, integrations, and deployments. You'll join a tight-knit team of 7 developers, where you'll step in as a senior with a clear pathway to progress into a lead role within a year! Tech Stack: C# .NET SQL databases API Development Experience with modern JS frameworks - Angular or Vue preferred What Makes This Role Stand Out More ❯

Senior Software Developers specialising in trading systems required for an excellent client based in London. The successful Software Developer will join a extremely talented development team and you will be exposed to creating and maintaining our client's own applications based around a C#/.NET/SQL Server/ASP.NET universe. Many projects are greenfield … on.You will be given the opportunity to work with the some of the latest technologies possible and will be expected to produce excellent code for our clients in house software applications and trading platform.Our client offers a very collaborative working environment with all of the development team coming from excellent educational backgrounds from across Europe. This role is within More ❯

Senior Software Developers specialising in trading systems required for an excellent client based in London. The successful Software Developer will join a extremely talented development team and you will be exposed to creating and maintaining our client's own applications based around a C#/.NET/SQL Server/ASP.NET universe. Many projects are greenfield … on.You will be given the opportunity to work with the some of the latest technologies possible and will be expected to produce excellent code for our clients in house software applications and trading platform. Our client offers a very collaborative working environment with all of the development team coming from excellent educational backgrounds from across Europe. This role is More ❯

Senior Software Engineer Location: Remote (UK-based) or Hybrid from Nottinghamshire office Salary: £40,000 - £50,000 per annum Team: Cross-functional team of 12 Reports to: Development Manager Join a Global Leader in Hosting & Infrastructure We're looking for a Senior Software Engineer to join our dynamic, cross-functional team at a globally recognised hosting More ❯

The Sr. Software Developer will support the current mission in Aberdeen Proving Grounds, MD. The Sr. Software Developer will support the established team in the design, deployment, and integration of software build automation/continuous integration tools within the SEC SE2 that facilitate the postproduction support of software and the software development lifecycle … SDLC). This includes supporting the current Agile software development tools that facilitate continuous integration and continuous delivery of software maintained by SEC developers. Additionally, you will provide infrastructures services and support, troubleshooting and help desk services while interacting with users (tier 2&3) and applications administration. It can be expected that they will be asked to analyze … experience (such as Ansible) • 1+ yr working in application deployment and support in a Linux environment • Experience building cross-platform applications • Experience with the SDLC, to include use of software source code control systems, artifact repositories and code assessment tools • Excellent understanding of DevSecOps and best practices • Strong knowledge in planning and performing in an Agile work environment with More ❯

Senior Software Engineer - DevX SCAnS (Developer Experience) Location London Business Area Engineering and CTO Ref # Description & Requirements In Bloomberg, the Developer Experience (DevX) group provides services and tooling that empowers over 9,000 engineers with their productivity needs and enables them to write high quality, performant and secure code. What goes into making Bloomberg's … software? Where do these components come from? How will we know if any are defective? How can we protect Bloomberg from malicious actors while still benefiting from open source? These are the questions you'll help us answer! The Software Composition Analysis and Security (SCAnS) team in DevX plays a foundational role in securing Bloomberg's software supply chain (SSC) by enabling engineers to use open source and third party software safely, in an operationally resilient manner. Our products integrate with build and analysis systems to ensure software component metadata (as SBOMs) is available throughout the SSC to build a software inventory, affording license and vulnerability identification firm-wide. We control the ingress More ❯

Join us a Senior Software Developer at Peregrine Resourcing. How Specialist Talent Works: At Peregrine, we find the best talent for our clients. As a permanent employee of Peregrine, with access to all our standard benefits, you will be deployed across our portfolio of clients as a specialist consultant, working on a wide array of complex projects … across multiple industries. The Role: We have multiple roles based across the North of England as well as remote working for Software Developers to work on a massive Digital data project which is due to kick off soon. The software developers will play a key role in researching and designing the new systems and software providing a … combined way of working. Responsibilities: Develop and maintain software products that make up services and contribute towards their design. You will be responsible for the operational stability of the products you build and be able to affect change in the on-going resilience of those products. You will work within, and contribute to, the overall Software Development Lifecycle More ❯