76 to 100 of 278 Software Engineer Jobs in the South East

Role: Principal Software Engineer Location: Berskhire (Onsite) Industry: Intelligence, Defence Salary: Competitive + Allowance + Bonus + Benefits Join a cutting edge engineering team developing high-performance embedded and application software for complex systems in the Intelligence/Cyber world. As a Lead Software Engineer, you’ll provide technical leadership across the full software lifecycle from requirements and architecture through to design, implementation, and test. Key Responsibilities: Lead and contribute to software design, development, and verification for embedded and application systems. Define architectures, review code, and ensure delivery to quality, cost, and schedule. Apply modern engineering practices (CI/CD, DevSecOps, TDD/BDD). Mentor junior engineers and drive best practice … About You: Degree (or equivalent) in Engineering, Computer Science, or related field. Strong experience in C/C++ and embedded or Linux development. Skilled in object-oriented design and software lifecycle management. Familiar with real-time systems, testing frameworks, and modern development tools. What’s on offer: Competitive salary, bonus & allowance. Strong pension and flexible benefits. Hybrid working and More ❯

Principal Software Engineer - Lead the Future of UK GovTech Innovation Up to £100,000 + Premium Benefits Package Remote-First | Just 1 Day Onsite Every 2 Weeks SC Clearable | British Citizens Only Where Technology Meets Purpose Are you ready to lead engineering efforts that directly impact national security, public services, and digital transformation across the UK? This is … more than just a job-it's a chance to build technology that matters , in a space where innovation meets mission-critical delivery. We're looking for a Principal Software Engineer to join a high-performing team at the forefront of UK GovTech. You'll architect secure, scalable platforms, mentor elite engineers, and shape technical strategy across programmes … that serve millions of citizens and protect national interests. Your Mission As a Principal Engineer, you'll be a technical leader, strategic thinker, and hands-on problem solver. You'll work closely with delivery teams, stakeholders, and government partners to ensure solutions are robust, secure, and future-proof. What You'll Be Doing: Architect cloud-native platforms using modern More ❯

Embedded Software Engineer (C+ +) Permanent (4 days a week onsite) Certain Advantage is recruiting five Software Engineers to join a well-established and reputable company based in Luton, on a permanent basis. The company: Were working with a well-established engineering and manufacturing firm based in Luton, renowned for delivering innovative solutions and high-quality products … on precision, efficiency, and technological advancement, the organisation prides itself on fostering a collaborative work environment that encourages professional growth and excellence. The role/The individual: As a software engineer, you will work within an integrated project team and be responsible for creating high quality and robust designs and code; for fully documenting and recording your work More ❯

Step into the future of defence technology with an exceptional opportunity as a Senior Software Engineer. If you're passionate about innovation and looking to make a real impact, this role offers you the chance to work on cutting-edge projects that redefine what's possible in the industry. Join a forward-thinking team that values excellence, creativity, and … career development. What You Will Do: Define, design, develop, and test embedded and application software to deliver high-quality solutions on time. Apply object-oriented design techniques to ensure code reusability and integration with testing frameworks. Review system design artefacts to derive software requirements and architecture that meet high-level system needs. Use modelling tools like RSA and … EA to document and maintain software designs, ensuring accuracy for code generation. Contribute to bids and proposals by generating technical estimates and identifying associated risks. Propose and implement improvements in tools, processes, and techniques to enhance software development efficiency. What You Will Bring: A degree in an engineering, mathematical, or science-based subject, or equivalent experience. Proficiency in More ❯

Software Engineer We’re partnering with a pioneering technology business who are building the future of computing. They’re developing some of the most advanced systems in the world and are now looking for a skilled Software Engineer to join their growing team. This is a fantastic opportunity to work at the forefront of innovation, collaborating … with scientists, engineers and technicians to develop the software that powers highly complex hardware systems. You’ll play a key role in everything from embedded firmware to high-level APIs, all while gaining exposure to some of the most exciting technology in the industry. The role Develop and maintain core code bases across embedded platforms, servers and workstations Contribute More ❯

Lead Software Engineer - Java Microservices Location: London (Hybrid - 2 days on-site, Monday and Tuesday) Overview We're excited to be supporting our client in hiring a talented Software Engineer (Java Microservices) to join a dynamic, high-performing engineering team within retail banking. This is a fantastic opportunity for a technically minded individual who's passionate … about building fast, reliable, and scalable software within a complex distributed environment. You'll play a key role in designing, developing, testing, and implementing modern microservices-based applications running in the public cloud. This is a hands-on position within a feature team that works collaboratively across the full software development lifecycle. What You'll Be Doing Designing … producing, testing, and implementing high-quality software across the system lifecycle Working within a permanent feature team focused on delivering business-critical services in a fast-paced Agile environment (two-week sprints) Collaborating with architects, principal engineers, and key stakeholders to align technical solutions with business objectives Applying Agile and Test-Driven Development (TDD) principles to build resilient, fast More ❯

Embedded C Software Engineer Location: Stevenage Contract: 6-Month Contract (Likely Extension) Rate: £51.98/hour PAYE (£59.54/hour incl. holiday) or £68/hour Umbrella We seek an engineer who has worked in a military/defence environment/industry within the last 12 months or who is capable of obtaining security clearance (SC level … minimum) Overview This engineering role focuses on the development and implementation of embedded C software solutions for real-time systems. The successful candidate will work on-site within a collaborative engineering environment, contributing to the design and programming of embedded systems operating on bare-metal and real-time operating systems. Key Responsibilities Design and develop embedded software using … C for real-time applications. Implement and debug bare-metal software solutions. Develop software within real-time operating systems such as FreeRTOS. Apply UML methodologies for structured software design. Manage and trace software requirements using DOORS. Support testing, integration, and validation of embedded software. Collaborate with multidisciplinary engineering teams throughout the software lifecycle. Ensure software More ❯

C++ Software Engineer Portsdown West (PO17) Full-time Onsite Salary £40,000 - £60,000 25 days annual leave inclusive of up to 3 days Christmas shut-down Buy or sell up to 5 days annual leave Annual Wellbeing allowance Two pension schemes to choose from Private Medical Insurance + discounts for additional family members Life Assurance scheme up … full operational potential. About the Role MASS is growing its Electronic Warfare Operations Support Group (EWOS) at Portsdown West, (Fareham, Hampshire). We are looking for a talented C++ Software Engineer with experience of working with simulation models, to aid Operational Analysis and support cutting edge research, development, and delivery projects, led by our technical customer, Dstl. This … Given the complex RF environments represented in ITASE, radar knowledge is essential and highly desirable in any candidate. What we are looking for: Strong background in modelling/simulation software development. Strong C++ programming skills. Experience with Visual Studio/Windows development tools. Knowledge of RF, countermeasure and flyout simulation tools, ideally gained within a defence setting. Radar systems More ❯

Embedded Software Engineer Hybrid with visits to the office near Reading Up to £70k + Bonus + Great Benefits Were looking for an Embedded Software Engineer who is interested in developing a next generation sensor for the marine industry. This would appeal to Engineers who want variety and enjoy working closely with the bare metal electronics More ❯

.NET Software Engineer - Oxford (Hybrid) - Salary £50k (DOE) We are delighted to be partnering with a successful SaaS Company that is revolutionising the way businesses handle transactions with their cutting-edge EPOS platform. We're currently looking for an experienced .NET Software Engineer to help take their platform to the next level click apply for full More ❯

Senior Software Engineer – TypeScript – GovernmentWe’re looking for a Senior Software Engineer to design, build, and deliver secure, scalable digital services for the UK public sector. You’ll develop cloud-native systems using TypeScript, AWS, and modern frameworks, ensuring high performance, resilience, and compliance.Key Responsibilities Develop and maintain applications using TypeScript with Express or Fastify. Build … Mocha, Jest, AWS SAM). Apply security and performance best practices throughout development. Essential Skills & Experience Experience in government or GDS-aligned projects. 5+ years’ experience in large-scale software engineering. Strong in TypeScript, JavaScript, Express/Fastify, and AWS. Expertise in Terraform, IaC, and microservice architectures. Hands-on experience with CI/CD, Docker, and automated testing. Strong More ❯

Staff Software Engineer | AI-Powered Startup | Backed by Leading VCs We're partnering with a well-funded, early-stage AI startup that's on a mission to transform how people and intelligent systems work together. Their platform unifies AI, automation, and data-driven decision-making into one seamless experience - helping teams move faster, think smarter, and achieve more … impact. Supported by top-tier investors and seeing strong early adoption, they're entering a high-growth phase and looking for a hands-on Software Engineer to play a key role in shaping the company's technical foundation and future direction. The Opportunity This is a hands-on, high-impact role where you'll work directly with the … high-trust environment built for innovation Backing from world-class investors Opportunity to help build a next-generation AI platform from the ground up If you're a Python engineer passionate about building scalable systems and bringing AI-powered products to life, this is a rare opportunity to make a deep technical and product impact early on. More ❯

Join us as a Software Engineer for our client. At Peregrine, we’re always seeking Specialist Talent that have the ideal mix of skills, experience, and attitude, to place with our vast array of clients. From Business Analysts in large government organisations to Software Developers in the private sector – we are always in search of the best … 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 are looking for a Software Engineer with a strong foundation in API development and C# to join our data engineering team in a highly regulated industry. In this role, you’ll be instrumental … in designing and building scalable, secure software systems that support seamless data movement between internal systems, third-party platforms, and cloud services. Your core focus will be developing and maintaining APIs and backend services that enable data ingestion, transformation, and delivery across our enterprise architecture. You’ll collaborate with cross-functional teams to ensure data is available where and More ❯

World Class Defence Organisation based in Stevenage, Hertfordshire is currently looking to recruit an Embedded ADA Software Engineer subcontractor on an initial 12 month contract. The role will likely be required to be onsite, but it can be worked on a 4-day week basis. Hourly Rate: £70.00ph (Umbrella). Overtime Rate: Hours worked over the standard … . Duration: 6 Months with very likely extension. Contracts are often ongoing and long-term thereafter. IR35 status: Inside IR35 (Umbrella) Interview process: One stage video interview Embedded ADA Software Engineer Job Description: Join the growing Software team in Stevenage, working as part of a dynamic team to develop, test and deliver innovative solutions by exploiting a … wide portfolio of software technologies. You will work as part of a small team and be empowered to work individually with little supervision. You will need to be able to work independently and be self driven whilst providing some technical leadership. You will need to be very proactive and comfortable working with teams outside of the SW department, and More ❯

Software Engineer, C#, Hybrid, COR7401 A rare and exciting opportunity has arisen for a technically curious Software Engineer to join an Oxfordshire based Software Consultancy. Working with the latest Microsoft technologies including F#, developing bespoke applications for high profile clients. The Role The role will involve developing innovative, bespoke web applications working closely with a More ❯

Job Title : Senior Embedded Software Engineer Location : Oxford Salary : £55,000 - £70,000 (Depending on Experience) Job Overview: We are seeking an experienced Senior Embedded Software Engineer to join a multidisciplinary design and engineering team developing high-quality, safety-critical embedded systems. The successful candidate will take technical ownership of embedded software development across multiple … concurrent projects, working closely with hardware, systems, and test engineers to deliver robust and compliant solutions. This role will suit a hands-on engineer with strong experience in C/C++, ARM microcontrollers (STM32), and communication protocols such as CANbus and RS-485. Experience within regulated industries—ideally aerospace or similarly safety-critical environments—and familiarity with DO-178C … processes is highly desirable. This is a full-time, on-site role based in Oxford, offering the opportunity to influence software design and development across several innovative platforms. Required Skills & Experience Proven experience (5+ years) developing embedded software in C and C++. Strong working knowledge of ARM Cortex-M (STM32) microcontrollers. Experience with CANbus and RS-485 communication More ❯

A Back End, Python Software Engineer role. A role that will build your technical capabilities, providing a foundation for growth into more senior technical leadership roles. The Software Engineer is a hands-on contributor responsible for delivering secure, maintainable, and performant software as part of a cross-functional Agile team. Working closely with Product, QA … practices. Essential Skills & Experience Strong Python Development Capability – 3 years+ Experience implementing and integrating with REST APIs SQL experience (preferably PostgreSQL and/or MySQL) Passionate about building quality software Comfortable working in Agile teams and collaborating cross-functionally Support CI/CD practices and participate in automated build and deployment processes Engage in peer programming, mentoring sessions, and More ❯

Backend Software Engineer (AI) £750 - £800 per day 2 days onsite We're working with a global healthcare and AI research organisation that's pioneering the use of advanced Machine Learning to accelerate the discovery and delivery of life-changing treatments. Their vision is to enable faster, personalised therapies that improve patient outcomes worldwide - and they're seeking … a Backend Software Engineer to help bring that mission to life. The Role You'll be joining a multidisciplinary AI/ML team responsible for developing the infrastructure and software that powers cutting-edge research and intelligent applications. The role focuses on backend development in Python, integrating AI components with data, compute, and frontend systems to create More ❯

Excellent opportunity for an experienced Full Stack Software Engineer to join a well-established client's software team in Newbury. Our client is looking for a Full Stack Software Engineer who enjoys building and improving web applications. The successful candidate will have the opportunity to work with modern tools and technologies to create reliable, high … end code using TypeScript and JavaScript. Set up and manage CI/CD pipelines using tools like Git, Docker, and build systems. Write and run tests to make sure software is stable and works as expected. Work in an agile team (Scrum or XP), taking part in planning and reviews. Use tools like Jira to track progress and keep More ❯

Excellent opportunity for an experienced Full Stack Software Engineer to join a well-established client's software team in Newbury. Our client is looking for a Full Stack Software Engineer who enjoys building and improving web applications. The successful candidate will have the opportunity to work with modern tools and technologies to create reliable, high … end code using TypeScript and JavaScript. Set up and manage CI/CD pipelines using tools like Git, Docker, and build systems. Write and run tests to make sure software is stable and works as expected. Work in an agile team (Scrum or XP), taking part in planning and reviews. Use tools like Jira to track progress and keep More ❯

Job Title: Software Engineer – C Python Location: West Sussex (Hybrid) Contract Length: Permanent Salary: up to £60,000 + package (depending on experience) Start Date: ASAP Company Overview Our client is on a mission to revolutionize cancer treatment by making radiation therapy more human, accessible, and effective. With a focus on upright patient positioning and cutting-edge technology … cancer is treated globally. Their passionate team is developing tomorrow’s treatments today, combining innovation with compassion to improve patient outcomes and experiences. Role Overview We are seeking a Software Engineer (Level I–II) to join our client’s dynamic engineering team. This role involves designing, developing, testing, and maintaining software for complex medical devices, ensuring compliance … Develop requirements, design specifications, and implementation for service tools used with medical devices. Collaborate with the service organization to gather use cases and requirements. Build desktop and web-based software applications. Follow QMS procedures, write supporting documentation, and apply CI best practices. Support configuration management and build systems. Skills & Experience 3+ years of experience developing with Python. Experience with More ❯

Role: Python Software Engineer Salary: up to £80k + Bonus + Excellent Benefits Location: Oxford (Hybrid, very flexible) We’re hiring on behalf of a global biotech innovator developing groundbreaking technology that enables real-time biological analysis at scale. This is your opportunity to work at the intersection of science and software , building the systems behind next … pipelines Familiarity with Kubernetes , Terraform , or related orchestration tools What’s on offer: Competitive salary and bonus Private healthcare & pension Collaborative, mission-driven culture If you’re a Python Software Engineer who thrives in fast-paced, meaningful environments and wants to contribute to technology that’s reshaping global research - apply now. More ❯

World Class Defence Organisation based in Stevenage is currently looking to recruit an Embedded C/C++ Software Engineer subcontractor on an initial 6 month contract. Hourly Rate: £70.00ph (Umbrella). Overtime Rate: Hours worked over the standard 37 hours per week, will be paid at time and a quarter Location: Stevenage Hybrid/Remote working: The role … Months with very likely extension. Contracts are often ongoing and long-term thereafter. IR35 status: Inside IR35 (Umbrella) Interview process: One stage video interview Embedded C/C++ Software Engineer Job Description: The company is a world leader in missile and missile systems looking for a highly capable and adaptable Engineers to join the Development Facility in Stevenage … Hertfordshire. You will be responsible for developing the software through the full lifecycle for safety related real-time systems application software for the next generation of Missile Systems. This is a technical hands-on role working the full software lifecycle. Responsibilities: Responsible for delivering the on-board software for the next generation of Missile Systems. This More ❯

Software Engineer - Build Cool Stuff That Matters Location: London (Hybrid: 2-3 days/week in office) Type: Permanent Salary: Upt p £80k + Perks The Opportunity Ready to ditch the dull and do work that actually excites you? We're on the hunt for a Software Engineer who loves solving real problems, building slick user … experiences, and working with modern tech in a fast-moving environment. You'll be part of a collaborative team that ships smart, scalable software-and has fun doing it. What You'll Be Doing Owning features end-to-end: design it, build it, ship it, monitor it Working closely with product, design, and data to create things people love More ❯

Title: Application Software Engineer Type: Long term contract (6 +months) Hybrid set-up: 3 days a week minimum - Reading About Ovyo Ovyo is a B2B services company providing flexible Engineering team & talent services to the streaming (video/media), space, satellite and comms industries. Our client, a leading innovator in satellite communications and space-based connectivity solutions, is … seeking an Application Software Engineer to design and prototype next-generation applications that demonstrate and enhance the capabilities of advanced satellite systems. This is a hands-on role focused on rapid prototyping, application design, and system integration, helping to bring proof-of-concept ideas into operational demonstrators for global communications and monitoring systems. Responsibilities: Design and develop proof … Docker for reliable, reproducible execution across environments. Apply multi-threading and concurrency principles to optimize application performance and responsiveness. Collaborate with systems, RF, and data engineering teams to integrate software with underlying satellite and network infrastructures. Contribute to system documentation and participate in Agile development processes. Required experience: Proficiency in Python, including experience with multi-threading, asynchronous programming, and More ❯