1 to 25 of 86 Senior Software Engineer Jobs in the South East

Senior Software Engineer/Developer (Full Stack JavaScript) London to £100k Opportunity to progress your career in a senior, hands-on Software Engineer role at a scale-up tech company, that enables smart matching for commercial van drivers and consumers, via job bidding and route optimisation, streamlining processes and delivering CO2 carbon neutral targets … established 10 years, with recent funding of £125 million. You'll be working on complex and interesting systems and can enjoy a range of benefits and perks. As a Senior Software Engineer you'll collaborate as part of an Agile technology team to design and develop, troubleshoot and solve complex software issues to help scale and … understanding of web development practices, tools and technologies You enjoy learning and picking up new things You're flexible and able to adapt to changing priorities You have full software development lifecycle experience including CI/CD and testing You're collaborative with Agile team experience, happy to mentor more junior developers You're likely to be degree educated More ❯

Senior Software Engineer - Cloud Services - £70-75k OQC is offering an opportunity for an experienced developer to work with a cross-functional team of skilled software innovators and domain experts to make accessible Quantum Computing a reality. Our well funded and expanding company takes pride in the development and growth opportunities we offer our team … members and in the rewarding work culture we cultivate at every level of the organisation. About You As an experienced senior software engineer and a self-starter who thrives in a collaborative environment that would enjoy mentoring and coordinating a team of motivated engineers, advocating for high standards of practice, whilst also remaining hands-on at coding. … a strong understanding of common data structures and design patterns Experience of taking ownership of projects and coordinating work within a team Demonstrated ability to design, develop, and test software using modern software development practices (e.g. automated testing, Agile framework, Continuous Integration, etc.) Strong problem solving, troubleshooting and analysis skills Technically versatile and able to learn new skills More ❯

leading investors so far, with $140 million raised in the last Series C funding round in January 2023. The role We are seeking a highly skilled and experienced C++ Software Engineer with expertise in developing robust mechanisms and pipelines which acquire metrics for real-time production autonomy software and evaluate its performance. You will be responsible for … will rely on your field expertise and knowledge of mobile Motion Planning systems to regularly collaborate with a variety of capability owners to innovate and drive progress. As a Senior Software Engineer in the Evaluators, Metrics and Tooling platform team, you will assess Motion Planning performance by: Developing and maintaining high quality processes and APIs to generate … and problem-solving skills in performing statistical analysis, data modeling, and predictive analytics. Professional experience in modern C++, including the STL and common testing frameworks Fluency in Python for software development Ability to develop high-quality APIs and code documentation Deep understanding of software development methodologies, code reviews, version control systems (e.g., Git), and agile practices Demonstrated leadership More ❯

Senior Software Engineer (JavaScript) ?? Colchester - Hybrid (2 days in-office, your choice) ?? £40,000 - £50,000 + flexible hours + award-winning culture Are you a strong JavaScript developer who's ready to take the next step into leadership? We're working with an award-winning Colchester-based business that partners with household name global clients , and … they're looking for a Senior Software Engineer to help lead their talented dev team. Why this role? Flexible working hours - work to your own rhythm, just be contactable between 10am and 4pm. Hybrid working - in the office just two days a week (you choose which ones). Step into leadership - lead a team of 5 developers … talented developers Supporting and mentoring junior team members Getting involved in architecture and sprint planning Innovating and contributing to tech strategy Building scalable systems for major global brands Senior Software Engineer (JavaScript) ?? Colchester - Hybrid (2 days in-office, your choice) ?? £40,000 - £50,000 + flexible hours + award-winning culture Oscar Associates (UK) Limited is acting More ❯

Our client, a fast-growing FinTech organisation delivering innovative digital financial solutions, is seeking a highly experienced Senior Software Engineer. This is a unique opportunity to join their dynamic tech team as they prepare to launch a brand-new mobile app in September 2025. The successful candidate will spearhead Python development, becoming the first permanent Python specialist within … collaborative team of Developers, Data Engineers, and Technology Experts. With a CEO who is a strong advocate of AI, experience and passion for AI technologies and their application in software development will be highly valued. Main Purpose of the Role:Lead and champion Python development within the organisation.Drive technical innovation across mobile app projects, backend development, and AI-driven … solutions.Collaborate closely with a multi-disciplinary technology team to deliver scalable, robust solutions. Key Responsibilities:Design, develop, and maintain high-quality software solutions using Python.Contribute to mobile app development, ensuring seamless integration with backend systems.Build and maintain CI/CD pipelines for efficient and secure deployments.Develop solutions on AWS cloud infrastructure, ensuring performance, security, and scalability.Support and contribute to More ❯

Role: Senior Software Engineer (Python) Salary: £100,000-£110,000 + Bonus WFH: Hybrid - 2-3 days/week in-office (Central London) Overview Our client is a profitable and fast-growing UK fintech helping over 800,000 customers improve their financial health. Backed by strong leadership and AI-driven innovation, the company is building a brand … new mobile app and scaling its engineering team to support rapid product delivery. They're now hiring a Senior Python Engineer to join this lean, high-impact team and help shape the future of fair, tech-driven credit products. Key Responsibilities Design, build and scale modern APIs and backend services in Python Lead technical delivery across greenfield and … Write maintainable, testable, high-performance code Influence architecture and mentor junior engineers Balance delivery with strategic thinking in a fast-moving environment Ideal Candidate 7+ years of experience in software engineering Strong Python (FastAPI, Flask, or Django preferred) AWS or Azure cloud exposure Frontend awareness (e.g. React) Agile mindset; thrives in lean, delivery-focused teams Passionate about AI and More ❯

SENIOR SOFTWARE ENGINEER (PYTHON) CENTRAL LONDON - HYBRID (2-3 DAYS PW) £100,000 - £110,000 + BONUS & BENEFITS Are you a Senior Software Engineer passionate about building robust, scalable Python applications in a fast-paced fintech environment? This is a critical hire for a rapidly growing UK fintech, aiming to transform the credit landscape … impacting customers, joining a team of around 100 people. Significant investment in their tech platform means your work will be at the forefront of innovation. THE ROLE: As a Senior Software Engineer, you'll be a key player in a dynamic ~8-person engineering team, reporting to the Engineering Manager. This is a hands-on, end-to … strategies, CI/CD pipelines, and influencing architectural decisions. Mentoring peers and championing rapid, iterative development in a lean, fast-paced culture. YOUR SKILLS AND EXPERIENCE: 7+ years in software development at a senior level. Strong backend Python engineering background (FastAPI, Flask, or Django preferred). Experience with AWS (Azure acceptable), Agile practices, and CI/CD. Some More ❯

Job Title: C++ Senior Software Engineer Day Rate: Via Umbrella Length of Contract: 6 months (huge potential for extension) Location: London About Client: A leading global financial technology organization is driving innovation across banking, payments, and capital markets. With a presence in over 50 countries, it processes trillions in transactions annually and supports some of the most … strategic acquisitions and operates from a state-of-the-art, sustainable headquarters that reflects its commitment to technology, collaboration, and employee experience. What you will be doing: As a Senior C++ Software Engineer, you will be involved in: Analysis of user requirements and translation into solution design Estimating and breaking down tasks into manageable chunks Implementation of … new features and feature enhancements Leading code reviews and enforcing best practice within a small, agile, focused team Mentoring junior colleagues What you will need: Extensive commercial software development experience using C++ SQL experience Unix/Linux experience Relevant degree in a numeric discipline, or equivalent work experience Excellent written and spoken English Added bonus if you have: Oracle More ❯

Title: Senior Software Engineer (C#) Department: Procode IT Location: Commutable distance of Chandlers Ford Salary: Circa £56,238 + 15% discretionary bonus scheme Are you an experienced Software Engineer with a strong track record in C#, .NET core & ASP.NET core? Do you enjoy guiding, mentoring and supporting others within a team? If so, then this … could be the role for you! About us We are a dynamic software company. Established in 2006, with a vision of helping the energy and utilities sectors improve customer experience and lower their cost to serve, using smarter process automation. Are you curious about what the future in tech holds? Do you have the drive to want to deliver … great solutions for customers? Then we have an exciting opportunity as a Senior Software Engineer (C#), where we aim to provide you with a uniquely inclusive and diverse workplace, which showcases the extraordinary in all of us, by enabling you to be the best you can be. Our promise is to put customers at the heart of More ❯

What will I be doing? You'll be joining a leading global financial institution to help shape and deliver the next generation of its international payments network. As a Senior Manager, Application Development , you'll lead a high-performing software engineering team responsible for end-to-end application ownership - from architecture and design through to delivery and continuous … technologies and practices, while also acting as a coach, mentor, and strategic partner to stakeholders across business and technology. What kind of work will I be doing? As a Senior Manager, Application Development, you will: Lead and inspire cross-functional teams to deliver innovative, high-quality software and services within a scaled agile framework. Own and oversee all … aspects of software development - from architecture and design through to build, test, deployment, and support Drive best practices in DevOps, continuous delivery, test automation (TDD/BDD), and cloud-native development. Provide architectural direction on Java-based microservices, RESTful APIs, and event-driven systems. Collaborate with technology and business stakeholders to translate strategic goals into clear technical roadmaps and More ❯

Job Title Senior Software Development Engineer - Fullstack Job Description In this role, you have the opportunity to Work on new product features, as well as maintenance of existing versions. You work in a modern environment, with state-of-the-art technologies. You collaborate on the software development with R&D Teams. You work in both English … and French. You apply the best practices, methods and techniques of modern software development following software regulations on medical devices. You are responsible for Design the technical solution that meets the functional specifications and potential risks. Supported by architects, participate in the technical choices in accordance with the architecture choices established by the project managers. Develop embedded applications … role, you should have the following skills and experiences: Master degree or equivalent in Computer Science Mastery of windows environment: installation, security and customisation 7 years of experience in Software development including 3 to 5 years in C#/.NET, package management (NuGet), dependency injection and unit testing on Visual Studio platforms. Knowledge in Web development (Angular) is a More ❯

Senior Software Engineer required by an established technology company located in Staines. Hybrid working - three days per week in the office. The Senior Software Engineer will focus on developing and maintaining SDKs for for four key products spanning JavaScript (TypeScript), Roku (BrightScript), Android (Java) and iOS (Objective-C). The Senior Software Engineer will be the "code owner" for JavaScript and Roku SDKs. Key Responsibilities Being "code owner" for JavaScript and Roku SDKs Analysing and defining new requirements Maintaining and improving CI/CD Ensuring feature parity and API alignment between different platforms SDK improvements where possible Helping define software development practices, policies & tooling Key Experience Strong JavaScript knowledge … Commercial experience with Java and/or Objective-C Version control and other core software engineering skills Experience in any of the following areas would be advantageous but is not a prerequisite Python or similar scripting language Roku Android and/or iOS React or similar web application framework Node XML/JSON If you are seeking a role More ❯

Senior Software Engineer required by an established technology company located in Staines. Hybrid working - three days per week in the office. The Senior Software Engineer will focus on developing and maintaining SDKs for for four key products spanning JavaScript (TypeScript), Roku (BrightScript), Android (Java) and iOS (Objective-C). The Senior Software Engineer will be the "code owner" for JavaScript and Roku SDKs. Key Responsibilities Being "code owner" for JavaScript and Roku SDKs Analysing and defining new requirements Maintaining and improving CI/CD Ensuring feature parity and API alignment between different platforms SDK improvements where possible Helping define software development practices, policies & tooling Key Experience Strong JavaScript knowledge … Commercial experience with Java and/or Objective-C Version control and other core software engineering skills Experience in any of the following areas would be advantageous but is not a prerequisite Python or similar scripting language Roku Android and/or iOS React or similar web application framework Node XML/JSON If you are seeking a role More ❯

Our client, a fast-growing FinTech organisation delivering innovative digital financial solutions, is seeking a highly experienced Senior Software Engineer to join their expanding technology team. This is an exceptional opportunity to work on a wide range of exciting projects, including playing a key role in the launch of a brand-new mobile app scheduled for September … maintain CI/CD pipelines to enable rapid and efficient deployments.Work on mobile app integration projects to ensure seamless backend connectivity.Incorporate AI technologies and models where applicable to enhance software capabilities.Promote coding best practices, automated testing, and continuous improvement.Collaborate with cross-functional teams to translate business requirements into technical solutions.Manage multiple projects simultaneously within a fast-paced FinTech environment. … What They Are Looking For:7+ years of senior-level software development experience.Deep commercial experience with C# development.Strong knowledge of AWS cloud services and infrastructure.Proven experience with CI/CD pipeline development and deployment automation.Experience contributing to mobile app development projects.Keen interest and practical experience in AI technologies and their application within software development.Excellent problem-solving abilities More ❯

Senior Full Stack Software Engineer Location : Home based Salary : £60,000-£91,000 Hours: Monday-Friday 40 hours per week 8.30am-5pm Contract Type : Permanent Purpose of the Role: Our client, a leading housing solutions provider, is seeking a Senior Full Stack Software Engineer to help modernise and rebuild their software environment. This … support strategic business goals. The ideal candidate is highly skilled in Azure cloud development, experienced in Agile and DevOps environments, and capable of leading development teams. Duties and Responsibilities: Software development, evaluating and improving codebases. Implement long-term development strategies with incremental improvements. Lead and mentor software engineers to enhance performance. Refine development processes, tools, and standards for … technical and non-technical stakeholders. Stay updated on industry standards, including version control, code reviews, testing, and CI/CD. Apply Agile methodologies in development practices. Required Skills: Extensive software development experience with a proven record of improving codebases. Skilled in C#, .NET, Azure, and SQL. Strong background in API development and provider application implementation. Capable of shaping long More ❯

and Middle East. About the Role:- Role-Golang Developer Mode-Hybrid-3 days from Office Location-BurgessHill, UK Type-Permanent Job Description: We’re looking for an enthusiastic diligent Senior Golang Software Engineer to work on the global Loyalty and Benefits platform The candidate should have excellent soft skills strong technical ability with an extensive passion to … and Benefits customer experience globally Built using modern tools such as Golang Kafka and Docker there is ample opportunity to drive innovation and grow knowledge and skills as an Engineer As a Software Engineer on an Scrum team you will be building and enhancing features in the Account domain You will also coordinate and work with other … tested and automated throughout the CICD pipeline to production Desired: Bachelor’s degree in computer science computer engineering or other technical discipline or equivalent work experience Experience in professional software development Solid understanding of test-driven development including unit component functional system integration and regression tests Knowledge of software engineering methodology Agile incl Scrum Kanban SAFe TestDriven Development More ❯

Senior Embedded Software Sustaining Engineer required for a manufacturer of life saving electronic solutions products. Part of a global group, this company offers rewarding careers, great benefits, and plenty of opportunities to grow in a supportive, energetic workplace. Hybrid working options (5 out of 10 days in the Rochester office). We are seeking a dedicated Software Engineer to take ownership of sustaining and enhancing existing embedded firmware and software product portfolio, primarily developed in C, with some C++ used for QT-based front ends. This is a new role within the R&D team, created to ensure the continuity and quality of support for mature products. The primary focus will be maintaining and … driver integration, allowing the core development team to focus on new product innovation. You will become a key knowledge holder across the product range and work closely with the software manager to plan and coordinate sustaining engineering tasks. While they operate a rotating schedule where software engineers take turns supporting legacy products, this role will act as the More ❯

Senior Software Engineer - (UK Remote) Our client, an innovative SaaS company, is looking for a Senior Software Engineer to join their remote team. This is an exciting opportunity to help shape a fully serverless platform built on AWS and Azure, using cutting-edge technologies such as React, TypeScript, and Node.js. You'll play a More ❯

We are currently partnering with a global technology leader seeking a Senior Java Developer. You will be at the forefront of cutting-edge technology, shaping the way millions of users experience seamless digital solutions. This is an opportunity to modernise and enhance industry-leading solutions, ensuring they remain reliable and scalable. As a Senior Java Developer , you will … provide technical guidance and mentor a team of developers, fostering technical excellence and delivering high-quality software solutions. Working in an agile environment, you’ll collaborate with cross-functional teams to define, design, and implement innovative features while mentoring junior engineers. Duties: Develop high-quality, performant, and reliable Java applications. Guide and mentor developers, including offshore teams and contractors. … Oversee software architecture, ensuring seamless integration with various platforms. Gather and analyse requirements, refining features and technical solutions. Lead the estimation process and ensure development work is accurately scoped. Debug existing code, maintain system performance, and drive best coding practices. Manage defects and oversee their resolution across the development team. Experience: 4+ years of experience in software engineering More ❯

analyze complex data, enabling governments, armed forces, and businesses to gain a digital advantage in demanding environments. What You'll Be Doing This role involves leading development across multiple software applications for complex customer systems. Due to the sensitive nature of the work, limited context can be provided. Responsibilities include designing solutions at system and component levels, acting as … Experience with Kotlin or Java Knowledge of UI testing frameworks like Cypress or Selenium Leadership experience or acting as Technical Authority Experience eliciting user requirements and designing customer-focused software Agile team experience Understanding of MDM technologies Experience with Next.js applications Security Clearance Applicants must have the right to work in the UK and will need to obtain SC More ❯

Senior Software Developer An exciting opportunity awaits a Senior Software Engineer to join a well-established design consultancy specializing in advanced signal and image processing technology. We are looking for an experienced professional to bring both expertise and innovative solutions to highly complex, cutting-edge projects. You will be at the forefront of product development … mentoring junior engineers, and collaborating closely with multidisciplinary teams to push the boundaries of software and embedded systems. With access to continuous learning opportunities and collaboration with industry leaders, this role is perfect for a senior engineer who thrives in a challenging, forward-thinking environment. Key Qualifications : 5+ years of experience in software development, with an … lead and mentor junior engineers Benefits : Competitive salary commensurate with experience 25 days of paid leave plus public holidays 10% pension contribution Comprehensive life insurance and income protection Position : Senior Software Developer – Signal/Image Processing Location : Surrey Apply : Send your CV to kristian AT enterpriserecruitment DOT com More ❯

Senior Software Engineer Rochester (Hybrid) 60,000 - 80,000 - Depending on experience and skills We support a range of commercial and military platforms, including fixed and rotary wing aircraft, ground vehicles, human-machine interfaces, and power management. Our systems operate in more than 100 countries with 25 air forces, 30 manufacturers and 280 airlines. Around … and outstanding customer responsiveness. We are a rapidly growing and successful part of one of the world's leading defence, security, and aerospace companies! What you'll be doing - Senior Software Engineer Development and implementation of embedded software, peripheral drivers, protocols, human-machine interfaces and associated supporting certification documentation Requirements analysis and definition, System/Software Architecture/Design, Modelling and Simulation, Systems/Software Integration, Verification and Validation, Safety Critical Development techniques Peer review and technically guide the work of others, produce size/re-use estimates, reliably estimate your own work Liaise with customers on technical issues, define processes/procedures, perform design review assessments, and make sound strategic technical decisions within More ❯

Senior Software Engineer Rochester (Hybrid) £60,000 - £80,000 - Depending on experience and skills We support a range of commercial and military platforms, including fixed and rotary wing aircraft, ground vehicles, human-machine interfaces, and power management. Our systems operate in more than 100 countries with 25 air forces, 30 manufacturers and 280 airlines. Around … and outstanding customer responsiveness. We are a rapidly growing and successful part of one of the world's leading defence, security, and aerospace companies! What you'll be doing - Senior Software Engineer Development and implementation of embedded software, peripheral drivers, protocols, human-machine interfaces and associated supporting certification documentation Requirements analysis and definition, System/Software Architecture/Design, Modelling and Simulation, Systems/Software Integration, Verification and Validation, Safety Critical Development techniques Peer review and technically guide the work of others, produce size/re-use estimates, reliably estimate your own work Liaise with customers on technical issues, define processes/procedures, perform design review assessments, and make sound strategic technical decisions within More ❯

Senior Software Engineer (AWS, Python, Angular) Location : 2 days a week in London Length : 6 months IR35 Status : Outside We are seeking a Senior Software Engineerto lead the orchestration, design, and delivery of complex product initiatives supporting our clients growth, who are a leading Insurance company in the UK. This role requires a hands-on … ensuring a seamless and scalable user experience. Ensure robust CI/CD pipelines, infrastructure as code (IaC), and deployment automation practices. Key Skills & Qualifications: 10+ years of experience in software engineering, with significant exposure to technical leadership and architecture. Proven expertise in AWS serverless architectures, including hands-on experience with key services. Strong proficiency in Python for backend development. … Experience building scalable front-end applications using Angular. Deep understanding of software design patterns, microservices architecture, and cloud-native principles. Hands-on experience with CI/CD pipelines, infrastructure as code (IaC) tools (e.g., Terraform, AWS CDK, or CloudFormation). Strong problem-solving skills, with an ability to navigate complex technical challenges. Excellent communication skills, capable of bridging the More ❯

Senior .NET Full Stack Developer Oxford | Remote | Competitive Salary (DOE) A leading software company based in Oxford is looking for a Senior .NET Full Stack Developer to join their growing team. This is a key role delivering high-quality software solutions for both UK-based and international clients. As a Senior Developer, you’ll be More ❯