1,151 to 1,175 of 1,891 Software Engineering Jobs in the South East

Group Plc is seeking a skilled and experienced Senior C# Developer to join our dynamic team. As a Senior Developer, you will be responsible for designing, developing, and maintaining software applications using .Net Core with associated web frameworks (React, Blazer, Angular). You will collaborate with cross-functional teams to understand project requirements, propose solutions, and deliver high-quality … and other developers to understand project requirements and deliver high-quality solutions. Participate in code reviews to ensure code quality and provide constructive feedback to peers. Troubleshoot and debug software applications to resolve issues and optimise performance. Stay updated with the latest trends and technologies in web development and software engineering. Document code and technical specifications. Contribute to … the continuous improvement of development processes and methodologies. Skills and Experience: Relevant training, qualifications and experience in software development practices (Apprenticeship/Degree/Masters etc) 8+ years proven experience as a C# Developer or similar software development role. Proficiency in C# programming language and .NET framework including .Net Core Strong understanding of object-oriented programming principles. Experience More ❯

Staff Software Engineer – Platform – Own the strategy to support massive expansion Up to £170,000 plus benefits London Office – 4 days a week Golang, AWS/GCP, Kubernetes, Distributed Systems Staff Software Engineer - We’re working with a high-growth payments business that has disrupted the market to become a major player in Europe. With over … customers and billions processed annually, they are scaling rapidly — and now looking for an experienced Staff Software Engineer to join their Platform organisation. This is a senior technical leadership role, ideal for someone who enjoys working across multiple squads, setting technical strategy, and driving clarity in ambiguous problem spaces. The client is looking for an established Staff-level Software Engineer with both hands-on engineering expertise and the ability to influence at scale across an organisation. The Opportunity Shape the long-term technical direction of platform infrastructure. Lead cross-squad initiatives and empower teams to solve complex challenges. Drive innovation around cloud-native technologies and platform automation. Balance strategic vision with ~30% hands-on coding and design More ❯

Staff Software Engineer – Platform – Own the strategy to support massive expansion Up to £170,000 plus benefits London Office – 4 days a week Golang, AWS/GCP, Kubernetes, Distributed Systems Staff Software Engineer - We’re working with a high-growth payments business that has disrupted the market to become a major player in Europe. With over … customers and billions processed annually, they are scaling rapidly — and now looking for an experienced Staff Software Engineer to join their Platform organisation. This is a senior technical leadership role, ideal for someone who enjoys working across multiple squads, setting technical strategy, and driving clarity in ambiguous problem spaces. The client is looking for an established Staff-level Software Engineer with both hands-on engineering expertise and the ability to influence at scale across an organisation. The Opportunity Shape the long-term technical direction of platform infrastructure. Lead cross-squad initiatives and empower teams to solve complex challenges. Drive innovation around cloud-native technologies and platform automation. Balance strategic vision with ~30% hands-on coding and design More ❯

Staff Software Engineer – Platform – Own the strategy to support massive expansion Up to £170,000 plus benefits London Office – 4 days a week Golang, AWS/GCP, Kubernetes, Distributed Systems Staff Software Engineer - We’re working with a high-growth payments business that has disrupted the market to become a major player in Europe. With over … customers and billions processed annually, they are scaling rapidly — and now looking for an experienced Staff Software Engineer to join their Platform organisation. This is a senior technical leadership role, ideal for someone who enjoys working across multiple squads, setting technical strategy, and driving clarity in ambiguous problem spaces. The client is looking for an established Staff-level Software Engineer with both hands-on engineering expertise and the ability to influence at scale across an organisation. The Opportunity Shape the long-term technical direction of platform infrastructure. Lead cross-squad initiatives and empower teams to solve complex challenges. Drive innovation around cloud-native technologies and platform automation. Balance strategic vision with ~30% hands-on coding and design More ❯

Full Stack AI Software Engineer - Full Remote UK - £90,000 + Equity This role requires a software engineer with experience in implementing RAG pipelines and Vector Search (and hybrid AI searches, preferably). The client I am working with is an AI focused start-up backed by a £1.7M pre-seed investment. They are on a mission to … the lengthiness and challenges of deal processes in the past. Their stack spans across back end, front end, data and crucially AI.This is a great opportunity for an entrepreneurial software engineer who wants to play a part in shaping the technical vision of this business and work on their product from an early stage. What you'll work on … React/Next.js . Solid experience with both SQL and NoSQL databases (Postgres, DynamoDB, etc.). Exposure to LLMs, embeddings, and vector search APIs . Strong understanding of data engineering , schema design, ETL, and optimisation. Proficiency with cloud (AWS preferred) and containerised deployments (Docker, ECS). Knowledge of secure coding practices and managing sensitive data. Excellent communication, problem-solving More ❯

Staff Software Engineer – AI/ML (London (Hybrid – 2 days per week in office) An opportunity to take on a high-impact, hands-on leadership role within a scaling global SaaS company that’s using AI to reinvent how internal business systems and data work together. As a Staff Software Engineer (AI/ML) , you’ll be the … technical lead for a newly formed AI Engineering function . You’ll build and scale AI-powered backend systems that connect enterprise data platforms (CRM, analytics, and communication tools) with large language models — creating intelligent tools and insights that enhance the way teams operate. What You’ll Do Lead the design, architecture, and implementation of internal AI/ML … deliver high-value AI applications. Mentor engineers and shape the company’s approach to internal AI enablement. What You’ll Bring 7+ years’ experience in backend or full-stack engineering, ideally within a SaaS or data-driven business. Strong knowledge of LLMs , prompt engineering, and fine-tuning approaches. Hands-on experience with AI/ML pipelines and vector More ❯

Staff Software Engineer – AI/ML (London (Hybrid – 2 days per week in office) An opportunity to take on a high-impact, hands-on leadership role within a scaling global SaaS company that’s using AI to reinvent how internal business systems and data work together. As a Staff Software Engineer (AI/ML) , you’ll be the … technical lead for a newly formed AI Engineering function . You’ll build and scale AI-powered backend systems that connect enterprise data platforms (CRM, analytics, and communication tools) with large language models — creating intelligent tools and insights that enhance the way teams operate. What You’ll Do Lead the design, architecture, and implementation of internal AI/ML … deliver high-value AI applications. Mentor engineers and shape the company’s approach to internal AI enablement. What You’ll Bring 7+ years’ experience in backend or full-stack engineering, ideally within a SaaS or data-driven business. Strong knowledge of LLMs , prompt engineering, and fine-tuning approaches. Hands-on experience with AI/ML pipelines and vector More ❯

Staff Software Engineer – AI/ML (London (Hybrid – 2 days per week in office) An opportunity to take on a high-impact, hands-on leadership role within a scaling global SaaS company that’s using AI to reinvent how internal business systems and data work together. As a Staff Software Engineer (AI/ML) , you’ll be the … technical lead for a newly formed AI Engineering function . You’ll build and scale AI-powered backend systems that connect enterprise data platforms (CRM, analytics, and communication tools) with large language models — creating intelligent tools and insights that enhance the way teams operate. What You’ll Do Lead the design, architecture, and implementation of internal AI/ML … deliver high-value AI applications. Mentor engineers and shape the company’s approach to internal AI enablement. What You’ll Bring 7+ years’ experience in backend or full-stack engineering, ideally within a SaaS or data-driven business. Strong knowledge of LLMs , prompt engineering, and fine-tuning approaches. Hands-on experience with AI/ML pipelines and vector More ❯

UK-based) Employment Type: Permanent, Full-Time Salary: £60,000 - £70,000 + great benefits About the Role We're looking for an experienced Development Manager to lead our software engineering team and drive successful project delivery across a modern C#/click apply for full job details More ❯

Introduction Saab in UK is growing rapidly, with over 500 colleagues across eight sites. We bring together Swedish heritage and British expertise to drive innovation in areas such as software engineering, underwater robotics, radars, AI, and armed forces training. Joining Saab in UK means contributing to the security and resilience of society while building a career with real More ❯

Quest Global are hiring for experienced C++ Senior/Principal Software Engineers on a permanent basis to be based in Luton. This position is for embedded software development in an end to end role focused on electronic warfare systems. As a software engineer, you will work within an integrated project team and be responsible for creating high … Essential Skills and Qualifications Strong programming expertise in C++14 , with extensive experience using Visual Studio for development, debugging , and performance optimisation. Proven ability to design, implement, and maintain embedded software on RTOS platforms such as VxWorks , including target integration and validation. Strong grasp of Object-Oriented Design (OOD) principles. Strong unit test skills using tools such as MS Test … and internal stakeholders to deliver high-quality outcomes. Excellent written and verbal communication skills. Strong peer reviewing skills ( source code and documentation). Desirable Skills and Qualifications Experience delivering software within Agile and DevOps frameworks, actively contributing to sprint meetings. Practical exposure to Continuous Integration (CI) environments and automated build and test pipelines. Working knowledge of Azure DevOps for More ❯

Role: Principal Software Engineer Location: Berkshire Industry: Intelligence, Defence Job Type: Permanent, Onsite 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 across the team. Support bids, proposals, and technical reviews. 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 More ❯

Role: Principal Software Engineer Location: Berkshire Industry: Intelligence, Defence Job Type: Permanent, Onsite 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 across the team. Support bids, proposals, and technical reviews. 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 More ❯

work with some of the most innovative companies in the tech industry — from start-ups to global leaders — helping them find and hire exceptional talent in areas such as software engineering, data analytics and cyber security. Just like sport, recruitment rewards hard work, resilience and teamwork. You’ll set goals, push yourself to beat them, and see tangible More ❯

rewarded. Established Reputation: Leverage our strong relationships and proven delivery track record in the buy-side tech market. High-Quality Mandates: Focus on strategic, senior-level technology hires across software engineering, quant technology, data, and infrastructure. What you’ll be doing: Delivering on live mandates for top-tier buy-side clients. Building and maintaining networks of senior technologists More ❯

rewarded. Established Reputation: Leverage our strong relationships and proven delivery track record in the buy-side tech market. High-Quality Mandates: Focus on strategic, senior-level technology hires across software engineering, quant technology, data, and infrastructure. What you’ll be doing: Delivering on live mandates for top-tier buy-side clients. Building and maintaining networks of senior technologists More ❯

rewarded. Established Reputation: Leverage our strong relationships and proven delivery track record in the buy-side tech market. High-Quality Mandates: Focus on strategic, senior-level technology hires across software engineering, quant technology, data, and infrastructure. What you’ll be doing: Delivering on live mandates for top-tier buy-side clients. Building and maintaining networks of senior technologists More ❯

direction. Manage and mentor partners in your industry to meet commercial targets. Guide and coach delivery teams across consulting, data, and technology disciplines, including: Data Management AI Cloud and Software Engineering QA and Automation Applications and Platform Integration Low-code and digital enablement What You’ll Bring Senior leadership experience in a technology or data-led consultancy. Experienced More ❯

direction. Manage and mentor partners in your industry to meet commercial targets. Guide and coach delivery teams across consulting, data, and technology disciplines, including: Data Management AI Cloud and Software Engineering QA and Automation Applications and Platform Integration Low-code and digital enablement What You’ll Bring Senior leadership experience in a technology or data-led consultancy. Experienced More ❯

direction. Manage and mentor partners in your industry to meet commercial targets. Guide and coach delivery teams across consulting, data, and technology disciplines, including: Data Management AI Cloud and Software Engineering QA and Automation Applications and Platform Integration Low-code and digital enablement What You’ll Bring Senior leadership experience in a technology or data-led consultancy. Experienced More ❯

Introduction Saab in UK is growing rapidly, with over 500 colleagues across eight sites. We bring together Swedish heritage and British expertise to drive innovation in areas such as software engineering, underwater robotics, radars, AI, and armed forces training. Joining Saab in UK means contributing to the security and resilience of society while building a career with real More ❯

We're Hiring: Senior Software Developer Hybrid | Northampton or London | 💼 Full-Time | 💰 From £60k Apply by: 30 September 2025 (or sooner if we find the right person!) Are you a seasoned .NET developer ready to lead enterprise-grade software projects and drive digital transformation? We’re looking for a Senior Software Engineer to join our team and More ❯

Senior Software Engineer (Python/AWS) 📍 Location: London or Manchester 💼 Employment Type: Full-time, Permanent About the Role We’re looking for a Senior Software Engineer with deep experience in Python and AWS to help design, build, and scale distributed, data-driven Ad-Tech systems. You’ll lead the delivery of cross-service features within a modern cloud … platform, making pragmatic architectural choices and setting high standards for engineering quality, reliability, and performance. You’ll play a key role in shaping technical direction, mentoring engineers, and ensuring the systems you build are secure, observable, and resilient. Key Responsibilities Lead complex delivery: Drive the end-to-end design and implementation of Python-based microservices and cloud-native solutions … hosted on AWS. Architect and optimise systems: Define service boundaries, data ownership, and failure-recovery patterns for scalable, high-availability systems. Raise engineering quality: Champion best practices for testing, observability, and security. Review critical PRs and guide technical decisions across the team. Operate and improve production systems: Monitor performance, reliability, and cost efficiency. Lead incident response and drive continuous More ❯

Senior Software Engineer (Python/AWS) 📍 Location: London or Manchester 💼 Employment Type: Full-time, Permanent About the Role We’re looking for a Senior Software Engineer with deep experience in Python and AWS to help design, build, and scale distributed, data-driven Ad-Tech systems. You’ll lead the delivery of cross-service features within a modern cloud … platform, making pragmatic architectural choices and setting high standards for engineering quality, reliability, and performance. You’ll play a key role in shaping technical direction, mentoring engineers, and ensuring the systems you build are secure, observable, and resilient. Key Responsibilities Lead complex delivery: Drive the end-to-end design and implementation of Python-based microservices and cloud-native solutions … hosted on AWS. Architect and optimise systems: Define service boundaries, data ownership, and failure-recovery patterns for scalable, high-availability systems. Raise engineering quality: Champion best practices for testing, observability, and security. Review critical PRs and guide technical decisions across the team. Operate and improve production systems: Monitor performance, reliability, and cost efficiency. Lead incident response and drive continuous More ❯

Senior Software Engineer (Python/AWS) 📍 Location: London or Manchester 💼 Employment Type: Full-time, Permanent About the Role We’re looking for a Senior Software Engineer with deep experience in Python and AWS to help design, build, and scale distributed, data-driven Ad-Tech systems. You’ll lead the delivery of cross-service features within a modern cloud … platform, making pragmatic architectural choices and setting high standards for engineering quality, reliability, and performance. You’ll play a key role in shaping technical direction, mentoring engineers, and ensuring the systems you build are secure, observable, and resilient. Key Responsibilities Lead complex delivery: Drive the end-to-end design and implementation of Python-based microservices and cloud-native solutions … hosted on AWS. Architect and optimise systems: Define service boundaries, data ownership, and failure-recovery patterns for scalable, high-availability systems. Raise engineering quality: Champion best practices for testing, observability, and security. Review critical PRs and guide technical decisions across the team. Operate and improve production systems: Monitor performance, reliability, and cost efficiency. Lead incident response and drive continuous More ❯