26 to 50 of 194 Permanent Senior Software Developer Jobs

Senior Software Developer JavaScript/React Manchester up to £65K We've partnered with one of the most exciting tech-driven companies in Manchester (and beyond) to help them find a Senior Software Developer with strong JavaScript and React experience. They've grown massively … phase of their journey, which is significant. What you'll be doing: You'll work closely with the Head of Development and an external software consultancy as they transition to a fully in-house team, building out multiple squads. This is the perfect opportunity for a senior developer … brand new mobile app project What they're looking for: Strong experience with JavaScript, React, and modern frontend best practices Comfortable working in a senior, hands-on capacity Able to collaborate across squads and guide technical decisions A proactive mindset - you enjoy solving tough problems and running with ideas More ❯

Senior AI Software Developers required for worldwide AI projects and locations Are you ready to shape the future of AI and Machine Learning web applications as a Senior AI Software Developer ? The WOW Adventure Ltd is on the lookout for visionary Senior AI Engineers … join our global team in the UK, USA, Canada, Australia, Italy, Norway, Finland, New Zealand, South Africa, India, Bangladesh, and Kenya. Key Responsibilities as Senior AI Software Developer: Lead and manage AI and Machine Learning projects at a senior project management level. Develop cutting-edge web … Drive innovation and collaborate with cross-functional teams to deliver exceptional results. Utilise your expertise to transform complex requirements into scalable solutions. Qualifications: Proven senior-level experience in AI and Machine Learning project management. Proficiency in Python, JavaScript, and the latest AI technologies. Strong problem-solving skills and a More ❯

MarathonTS is seeking a Sr. Software Developer to support our Federal customer in the Washington, DC area. We are seeking a skilled Sr. Software Developer to help with the development of our current projects. Your duties will primarily revolve around building software by writing code … as well as modifying software to fix errors, adapt it to new requirements, improve its performance, or upgrade interfaces. Engage in all phases of the software development lifecycle which include gathering and analyzing user/business system requirements, responding to outages, and creating application system models. Participate in … and debug programs to meet business needs and interact and sometimes direct third-party partners in the achievement of business and technology initiatives. Sr. Software Developer We are seeking a skilled Sr. Software Developer to help with the development of our current projects. Your duties will More ❯

Senior Software Developer (PYTHON/AWS/REACT) - Health tech - tech for good, make a positive impact on the world Highly successful and fast growing organisation has an exciting opportunity for a Senior Software Developer (PYTHON/AWS/REACT). They are looking … for a talented individual who will design, implement, and maintain their publishing software, systems, and customer-facing digital products. Requirements Design and implement systems and software to meet requirements using appropriate tools and methods. Promote the creation of high-quality code by commitment to practices such as test … driven development, pair programming and code review. Be responsible for the technical development of all stages of software creation, including testing; ensure that implementation meets security, performance, and safety requirements. Suggest improvements to the code base, development processes, tooling and working practices. Encourage innovation by identifying, evaluating and adoption More ❯

Senior Software Developer | Manchester | ASP.NET Core | £50K - £60K | Hybrid Our client is a fast growing software development company that partners with clients to build custom apps, platforms, and digital experiences. They're all about using smart technology to solve real-world problems - and having fun while … Their team is packed with talented developers, designers, and innovators who love working on exciting projects across different industries. They're looking for a Senior .NET Developer to join their crew and help take their projects to the next level. The role Build and maintain high-quality web … Pension scheme Health insurance APPLY NOW! Sound like the role for you? Interviews are commencing from the start of next week, so apply now! Senior Software Developer | Manchester | ASP.NET Core | £50K - £60K | Hybrid Oscar Associates (UK) Limited is acting as an Employment Agency in relation to this More ❯

We are seeking a Mandarin-speaking Software Developer with a passion for creativity and a demonstrable record of delivering software solutions. A strong knowledge of PHP/Lavarel is a must, as well as enjoying leading and managing peers and third parties. Client Details Our client is … are a small UK based team with a global network who have a reputation for delivering top-notch scientific solutions. Description Develop high-quality software design and architecture. Identify, prioritise and execute tasks in the software development life cycle. Develop tools and applications by producing clean, efficient code. … validation and verification testing. Collaborate with internal teams and vendors to fix and improve products. Document development phases and monitor systems. Profile A successful Senior Software Developer must have: Mandarin fluency. Proven experience as a Software Developer in a business environment. Experience in software More ❯

Senior Software Developer - C# Senior Software Developer required by a leading Cloud Technology company based in Bracknell. The company are working on cutting-edge technology including AI and propensity modelling. This is a brand-new position due to growth and will join a well … days from home. Essential experience: Degree in Computer Science or other STEM subject ideally from a Russell Group University 5+ years' experience in a software development role C# SQL Server Source control, ideally Git Experience working within an Agile environment Any experience in the following would be advantageous: .NET More ❯

Senior Software Developer - C# Senior Software Developer required by a leading Cloud Technology company based in Bracknell. The company are working on cutting-edge technology including AI and propensity modelling. This is a brand-new position due to growth and will join a well … days from home. Essential experience: Degree in Computer Science or other STEM subject ideally from a Russell Group University 5+ years' experience in a software development role C# SQL Server Source control, ideally Git Experience working within an Agile environment Any experience in the following would be advantageous: .NET More ❯

Senior Software Developer - C# Senior Software Developer required by a leading Cloud Technology company based in Bracknell. The company are working on cutting-edge technology including AI and propensity modelling. This is a brand-new position due to growth and will join a well More ❯

Job Number: R Software Developer, Senior The Opportunity: As a Software Developer, you can resolve a problem with a complete end-to-end solution in a fast, agile environment. If you're looking for the chance to not just develop sof tware, but to create … a system that will make a difference, we need you on our team. We're looking for an experienced Developer like you with the skills needed to develop sof tware and systems from vision to production ready. This role is more than just coding. As a Senior Software Developer at Booz Allen, you'll use your passion to master new tools and te chn iques and identify needed system improvements. You'll help clients overcome their most difficult challenges using the latest architectural approaches, tools, and te chn ologies. You'll make sure the solution developed More ❯

Senior Full-Stack Software Developer Position (UK) London, United Kingdom Type: Full-Time (hybrid - min. 3 days per week in office) Longevity Partners is seeking a Senior Full-Stack Developer with an interest in leading innovative digital transformation projects, particularly focused on sustainability and climate … change. The Senior Developer will lead on implementation for Longevity's digital transformation work and will work closely with and report to the Head of Data - Digital Transformation Lead. The role will enable the successful candidate to have a measurable impact on climate change mitigation and offers opportunities … for growth and progression within the firm. The Senior Developer would be responsible for line managing a Junior Developer to come on board in Q1 2025. The individual should be enthusiastic, keen to learn, and have an interest in contributing solutions to the climate change crisis. A More ❯

Position Title: Software Developer (Senior) Location: Remote with occasional travel to Washington, DC Position Overview: Marathon TS is seeking a Senior Software Developer to join our elite team of low-code aficionados. As the senior developer, you will play a pivotal role … practices. Developing requirements, generating conceptual design and detailed design documentation, and driving the implementation of a modernization projects Facilitating design discussions and reviews with Senior IT leadership to solicit feedback and gain concurrence. Excellent problem-solving skills, with the ability to analyze complex issues and provide effective solutions. Exceptional More ❯

Senior Java Software Developer. Are you an experienced Senior Software Developer looking to take on a design authority role? Join a dynamic and growing team delivering cutting-edge cloud-based analytics solutions. With award-winning technology and strong partnerships in the IT & Telecoms sector, including … Cisco, this is an exciting opportunity to work on high-performance applications at the forefront of innovation. The Role As a Senior Software Developer, you'll take ownership of key technical areas, ensuring best practices in design and development. You'll collaborate closely with product teams, lead … architectural decisions, and play a pivotal role in enhancing our web application. This position offers full involvement in the software development lifecycle, from design and coding to testing and deployment. Key Responsibilities Design Authority - Lead architectural decisions and guide team members on best practices. Back-End Development - Build and More ❯

Senior Developer (ASP.Net Core, C#) - Nottingham/hybrid remote - Salary £60K - £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 … Software Developers (ASP.Net Core, C#, AWS) to join a rapidly growing specialised development house based in Nottingham right nearby the border of Derbyshire - this is easily commutable from the East & West Midlands. The expectation for this role is 2 days a week of your choice in the office including … flexible hours (their core hours are between 10am - 3pm). As a Software Developer (ASP.Net Core, AWS, C#) you will be responsible for a wide range of innovative projects from development of their innovative cloud-based enterprise system to internal systems. You will spend the majority of your More ❯

Senior Software Developer Opportunity - SaaS Remote-first Forward-thinking Tech Culture We're working with a hugely exciting software company that's transforming how enterprise teams manage and optimise their operations. Their core product is already used by household names across the globe - and with major … packed full of innovation (think: AI, cloud-native architecture, and intelligent automation), they're now scaling their development team. They're looking for a Senior Software Developer to join a highly collaborative, cross-functional team made up of developers, technical architects, and QA engineers. The team is … platform makes. What they're looking for: Familiarity with Agile, CI/CD pipelines (Azure DevOps), and RESTful API architecture Someone comfortable in a senior-level role, offering mentorship and bringing strong development practices to the table Curiosity around modern trends like Rust, Python, or AI/ML is More ❯

Senior Software Developer | .Net, Azure, Kubernetes | £70K DOE | Lancashire | 1 day in the office Our client are a high-growth, innovation-led software company delivers full-stack development solutions across a wide range of sectors, with a strong focus on AI, machine learning, and image recognition … States. Sectors served include mass participation events, law enforcement, defence, and more. The role We are seeking a highly skilled and experienced Full Stack Developer to join its small, collaborative team. This role requires someone who can contribute across both front-end and back-end development, lead projects, and … junior team members. The ideal candidate is curious, solutions-driven, and excited by cutting-edge technologies. Key Responsibilities: Designing, building, and maintaining full-stack software applications Leading development on client projects, from architecture to deployment Participating in agile processes, including daily stand-ups and sprints Conducting code reviews and More ❯

Permanent £50,000 - £80,000 Site Based Cambridge, Cambridgeshire, United Kingdom Updated on: 04-04-2025 ROLE OVERVIEW We are currently looking for a Senior Bioinformatics Software Developer to join a leading biotechnology company based in the Cambridge area. As the Senior Bioinformatics Software Developer … equivalent experience). Proven industry experience working with genomic data within a cloud environment. A working knowledge and practical experience with writing production-level software in Python or Go. Key Words: Senior Bioinformatics Software Developer/Bioinformatics/Software Development/Genomic Data/Cloud More ❯

Senior Software Developer - Mathematical Solutions Position Description Are you a passionate Software Developer looking to work on impactful projects that improve lives while being part of a globally recognised, award-winning employer? If so, we have an exciting opportunity for you! CGI was recognised in … prepared to undergo National Security Vetting (NSV) to Baseline Personnel Security Standard (BPSS) level as a minimum. Your future duties and responsibilities As a Senior Java/Python Developer within CGI Space, you will play a crucial role in delivering a mission-critical software suite for a … will involve implementing complex algorithmic solutions that drive high-availability and high-reliability systems. You will be responsible for developing and maintaining high-quality software solutions that meet our clients' rigorous requirements. You will also manage the automated subsystem test suite, ensuring the reliability and accuracy of software More ❯

Our client is looking for a Senior Software Architect and Developer. The role will be responsible for designing and developing innovative software solutions, with a focus on microservice architectures, cloud computing and orchestration with Kubernetes. The ideal candidate will have a strong background in Java programming and … will demonstrate leadership skills in managing the development team. €40,000 - €45,000 DOE Responsibilities for the Senior Software Architect/Developer Role include: Design and develop distributed architectures based on microservices, ensuring performance, scalability, and security Manage the application life cycle, including development, development, testing, release … requirements into high-quality technical solutions. Lead and support a team of developers, fostering their professional development and promoting good development practices. For the Senior Software Architect/Developer role, you will need: At least 4 years of proven experience in software development, with a focus More ❯

Position Details: Senior AI and Web App Software Developer Location: Southampton, Hampshire Openings: 1 Salary Range: Description: Senior AI Software Developers required for worldwide AI projects and locations Are you ready to shape the future of AI and Machine Learning web applications as a Senior AI Software Developer? Our global client is on the lookout for visionary Senior AI Engineers to join our global team from the UK, USA, Canada, Australia, Italy, Norway, Finland, New Zealand, South Africa, India, Pakistan, Bangladesh, and Kenya. Key Responsibilities as Senior AI Software Developer: Lead and manage AI and Machine Learning projects at a senior project management level. Drive innovation and collaborate with cross-functional teams to deliver exceptional results. Utilise your expertise to transform complex requirements into scalable solutions. Qualifications: Proven senior-level experience in AI and Machine More ❯

Senior Software Developer (Java/Python) Location: Tampa Clearance: SECRET Job Description We are seeking a highly skilled Senior Software Developer with expertise in Java and Python to join our team. The successful candidate will be responsible for designing, developing, and maintaining software applications that meet the needs of our clients. Responsibilities Design, develop, and maintain software applications using Java and Python Collaborate with cross-functional teams to identify and prioritize software features. Write clean, efficient, and well-documented code. Perform code reviews and provide feedback to other developers. Participate … in the full software development lifecycle, including requirements gathering, design, development, testing, and deployment. Stay up to date with emerging trends and technologies in software development. Requirements Bachelor's degree in Computer Science or a related field 5+ years of experience in software development using Java and More ❯

JOB TITLE: Senior Software Developer - Freelance - Outside IR35 COMPANY: PPC Creative Limited REPORTING TO: Chief Operating Officer DEPARTMENT: Technical Support LOCATION: Remote COMPANY OVERVIEW Picture Production Company is a leading International Creative Production agency that combines a dedicated award-winning creative team with unparalleled post-production facilities. … our passion, and our attention to detail can be seen on-screen in every job we do. ROLE OVERVIEW We are seeking an experienced Senior Software Developer to join our development team. In this role, you will design, develop, and maintain high-quality software solutions. MAIN … RESPONSIBILITIES Lead the design and implementation of complex software systems. Collaborate with product managers and stakeholders to define technical requirements. Write clean, maintainable, and efficient code. Conduct thorough code reviews and provide constructive feedback. Troubleshoot and resolve complex technical issues. Introduce and advocate for best practices in software More ❯

Functional Responsibilities: The SD - Senior shall possess an active and transferable U.S. TOP-SECRET (with SSBI). The Senior-Level Software Developer is a highly skilled professional responsible for designing, developing, and maintaining high-quality software solutions. With extensive experience in Agile environments, they play … a key role in leading development efforts, implementing best practices, and collaborating with cross-functional teams to deliver value-driven software increments. This role requires advanced technical expertise, leadership abilities, and a deep understanding of Agile principles to drive successful software development projects. The Contractor shall provide Senior-Level Software Developer services, working alongside the Government Supervisors, Product Owners, and developers. These services shall include: Software Development: Design, develop, and maintain software applications, modules, and components using appropriate programming languages, frameworks, and technologies, ensuring adherence to coding standards and best practices. Agile Collaboration More ❯

JOB TITLE: Senior Software Developer (Short-term Contract) COMPANY: PPC Creative Limited REPORTING TO: Chief Operating Officer DEPARTMENT: Technical Support LOCATION: Soho, London (Remote/Office-Based) CONTRACT LENGTH: 4 to 8 weeks COMPANY OVERVIEW Picture Production Company is a leading International Creative Production agency that combines … our passion, and our attention to detail can be seen on-screen in every job we do. ROLE OVERVIEW We are seeking an experienced Senior Software Developer to join our development team. In this role, you will design, develop, and maintain high-quality software solutions. MAIN … RESPONSIBILITIES Lead the design and implementation of complex software systems. Collaborate with product managers and stakeholders to define technical requirements. Write clean, maintainable, and efficient code. Conduct thorough code reviews and provide constructive feedback. Troubleshoot and resolve complex technical issues. Introduce and advocate for best practices in software More ❯

JOB TITLE: Senior Software Developer (Short-term Contract) COMPANY: PPC Creative Limited REPORTING TO: Chief Operating Officer DEPARTMENT: Technical Support LOCATION: Soho, London (Remote/Office-Based) CONTRACT LENGTH: 4 to 8 weeks COMPANY OVERVIEW Picture Production Company is a leading International Creative Production agency that combines … our passion, and our attention to detail can be seen on-screen in every job we do. ROLE OVERVIEW We are seeking an experienced Senior Software Developer to join our development team. In this role, you will design, develop, and maintain high-quality software solutions. MAIN … RESPONSIBILITIES Lead the design and implementation of complex software systems. Collaborate with product managers and stakeholders to define technical requirements. Write clean, maintainable, and efficient code. Conduct thorough code reviews and provide constructive feedback. Troubleshoot and resolve complex technical issues. Introduce and advocate for best practices in software More ❯