1,401 to 1,425 of 2,310 Software Engineering Jobs in the South East

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 ❯

Are you an experienced Senior Software Engineer with strong Delphi expertise? Join a forward-thinking technology business, working on a diverse range of bespoke applications, APIs, and databases that underpin both customer-facing products and internal systems. Senior Software Engineer - Delphi & C# Location: Hybrid (office in Southampton, Hampshire) Salary: Circa £55,000 - £56,000 + up to … discretionary bonus Benefits: Bonus scheme, pension, healthcare, EV car scheme, volunteering day, career progression & more The Role As a Senior Software Engineer, you'll be part of a collaborative Agile product team, responsible for designing, developing, and maintaining innovative software solutions. You will: Write clean, efficient, and secure code in Delphi and C#. Support the development and integration … part in Agile ceremonies, code reviews, and sprint delivery. Support out-of-hours incident resolution on a rota basis. This role offers the chance to work across the full software lifecycle, while shaping technical direction and supporting the growth of your peers. About You You'll be a strong communicator and problem-solver, with the ability to work across More ❯

Are you an experienced Senior Software Engineer with strong Delphi expertise? Join a forward-thinking technology business, working on a diverse range of bespoke applications, APIs, and databases that underpin both customer-facing products and internal systems. Senior Software Engineer - Delphi & C# Location: Hybrid (office in Southampton, Hampshire) Salary: Circa £55,000 - £56,000 + up to … discretionary bonus Benefits: Bonus scheme, pension, healthcare, EV car scheme, volunteering day, career progression & more The Role As a Senior Software Engineer, you'll be part of a collaborative Agile product team, responsible for designing, developing, and maintaining innovative software solutions. You will: Write clean, efficient, and secure code in Delphi and C#. Support the development and integration … part in Agile ceremonies, code reviews, and sprint delivery. Support out-of-hours incident resolution on a rota basis. This role offers the chance to work across the full software lifecycle, while shaping technical direction and supporting the growth of your peers. About You You'll be a strong communicator and problem-solver, with the ability to work across More ❯

Are you an experienced Senior Software Engineer with strong Delphi expertise? Any additional information you require for this job can be found in the below text Make sure to read thoroughly, then apply. Join a forward-thinking technology business, working on a diverse range of bespoke applications, APIs, and databases that underpin both customer-facing products and internal systems. … Senior Software Engineer - Delphi & C# Location: Hybrid (office in Southampton, Hampshire) Salary: Circa £55,000 - £56,000 + up to 15% discretionary bonus Benefits: Bonus scheme, pension, healthcare, EV car scheme, volunteering day, career progression & more The Role As a Senior Software Engineer, you'll be part of a collaborative Agile product team, responsible for designing, developing, and … maintaining innovative software solutions. You will: Write clean, efficient, and secure code in Delphi and C#. Support the development and integration of legacy and modern platforms. Contribute to CRM product development, APIs, and databases. Provide technical leadership, mentoring mid-level and junior engineers. Take part in Agile ceremonies, code reviews, and sprint delivery. Support out-of-hours incident resolution More ❯

We’re representing a high-performance engineering team developing record-breaking control and computing systems that blend software, hardware, and scientific research into a cutting-edge platform. Their technology has already achieved world-first milestones for precision and performance, and they’re now scaling towards full production systems. As a Senior Software Engineer , you’ll lead the … design and development of software that directly drives and monitors complex experimental and control systems. You’ll be working at a deep technical level - designing architectures that bridge embedded systems , distributed computing , and data pipelines , all while maintaining real-time precision and reliability. What you’ll be doing Leading the design and development of control and automation software … that integrate custom hardware, sensors, and distributed computing systems. Implementing control, synchronisation, and data acquisition logic to run complex experimental setups. Optimising for performance, latency, and stability across multiple software layers. Contributing to architectural decisions, mentoring junior developers, and driving software quality across the team. Collaborating closely with scientists and hardware engineers to ensure the software behaves More ❯

Backend Software Engineer/Developer (C# .Net SQL) *London onsite* to £180k+ Are you a technologist Backend Software Engineer with a record of academic achievement? You could be progressing your career working on complex and challenging systems at a Hedge Fund with over $17 billion under management. As a Backend Software Engineer you'll collaborate with a … with good business acumen, keen to take ownership and lead projects You're collaborative, enjoy problem solving and sharing ideas What's in it for you: As a Backend Software Engineer/Developer you will earn a competitive package: Salary to £180k Significant bonus earning potential Fund performance share Personal training budget and mentoring Family friendly benefits that include … backup childcare as well as care for elderly relatives Various social groups including sports teams Private healthcare and wellness activities Apply now to find out more about this Backend Software Engineer/Developer (C# .Net SQL) opportunity. At Client Server we believe in a diverse workplace that allows people to play to their strengths and continually learn. We're More ❯

Backend Software Engineer/Developer (C# .Net SQL) *London onsite* to £180k+ Are you a technologist Backend Software Engineer with a record of academic achievement? You could be progressing your career working on complex and challenging systems at a Hedge Fund with over $17 billion under management. As a Backend Software Engineer you'll collaborate with a … with good business acumen, keen to take ownership and lead projects You're collaborative, enjoy problem solving and sharing ideas What's in it for you: As a Backend Software Engineer/Developer you will earn a competitive package: Salary to £180k Significant bonus earning potential Fund performance share Personal training budget and mentoring Family friendly benefits that include … backup childcare as well as care for elderly relatives Various social groups including sports teams Private healthcare and wellness activities Apply now to find out more about this Backend Software Engineer/Developer (C# .Net SQL) opportunity. At Client Server we believe in a diverse workplace that allows people to play to their strengths and continually learn. We're More ❯

Full Stack Developer/Software Engineer (JavaScript Vue.js Python) London to £80k Do you enjoy working with a range of programming languages? You could be progressing your career as a Full Stack Developer 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 … do decide to cycle! Your role: As a Full Stack Developer you'll collaborate as part of an Agile technology team to design and develop, troubleshoot and solve complex software issues to help scale and future proof the business. You'll work across the full tech stack using JavaScript and Vue.js on the front end, there's a range … 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 ❯

Developers, UX Designers, and Business Analysts to define and document both high-level and detailed requirements. Provide accurate development estimates and contribute to planning sessions. Design and develop new software features and enhancements to existing applications. Create and maintain detailed UI design specifications. Develop unit and end-to-end tests using frameworks such as Vitest and Playwright. Support User … timelines. Assist in the creation of implementation and rollback plans and provide post-release support during warranty periods. Required Skills & Experience: Proven experience as a React Developer or UI Software Engineer. Expert-level proficiency in: HTML CSS (SCSS) JavaScript (ES6) Strong UI/UX design skills - capable of working independently or within a team. Solid experience with Agile methodologies More ❯

everyone to have personal dignity at work and be empowered, so you can be your best, true authentic self each and every day. About the Role Write clean, maintainable software to critical deadlines whilst following best engineering practices. Understanding and solving challenging problems through simplistic solutions and services. Architect and build using technology that is best suited to … functional) are clearly understood, accurately implemented to the highest quality, make best use of technology and conform to best practice design principals; balancing innovation and appropriate risk-taking with engineering rigour and meeting the commercial demands of the business. Participate in code reviews and evangelizing best architectural and coding practices; helping to identify where improvements can be made and … per week to catch up with other team members. The role may also require occasional travel to other offices when necessary. About You Talented engineer with a passion for software quality, an eye for continuous improvements, and a solution-based approach that focuses on the bigger picture whilst remaining pragmatic and operating within known constraints. Ideally 5+ years' hands More ❯

everyone to have personal dignity at work and be empowered, so you can be your best, true authentic self each and every day. About the Role Write clean, maintainable software to critical deadlines whilst following best engineering practices. Understanding and solving challenging problems through simplistic solutions and services. Architect and build using technology that is best suited to … functional) are clearly understood, accurately implemented to the highest quality, make best use of technology and conform to best practice design principals; balancing innovation and appropriate risk-taking with engineering rigour and meeting the commercial demands of the business. Participate in code reviews and evangelizing best architectural and coding practices; helping to identify where improvements can be made and … per week to catch up with other team members. The role may also require occasional travel to other offices when necessary. About You Talented engineer with a passion for software quality, an eye for continuous improvements, and a solution-based approach that focuses on the bigger picture whilst remaining pragmatic and operating within known constraints. Ideally 5+ years' hands More ❯

Senior Software Engineer - Gen AI 1 day a week in Central London, hybrid working Salaries paying £90k-£125k + annual bonus Oliver Bernard have partnered with a rapidly growing FinTech in London who are building the next generation of AI based financial products. We are looking for Senior Software Engineers who have commercial experience with GenerativeAI and LLM … LLMs, Vector Databases. The client are looking for someone to start as soon as possible and they are moving quickly with interviews! Please apply now for more information! Senior Software Engineer - Gen AI More ❯

Java Software Engineer - Java, Python, AWS, MySQL, NoSql, REST APIs, Microservices, Machine Learning, Artificial intelligence (Hybrid - 3 days a week in the office - Notting Hill) Description for the Java Software Engineer role:- You will be joining a fast-growing, research-driven company building an artificial intelligence using novel machine learning techniques. My client is revolutionising their industry with … a track record of building things that others have ruled out as impossible. The Java Software engineer will join a very bright, talented team of engineers with the guidance of technologists who have help build up some of the best known technology companies today. You will have a great opportunity to work with a variety of languages, frameworks and … tools. Applicants will need a background in Java and/or Python with a focus on Server side technologies. Core skills for the Java Software Engineer: 5yrs in a commercial Development role Solid experience of Java Good knowledge of Cloud Technologies (AWS) and Microservices Strong database knowledge (SQL and NoSQL) Degree in Computer Science, Engineering, or a related More ❯

Java Software Engineer - Java, Python, AWS, MySQL, NoSql, REST APIs, Microservices, Machine Learning, Artificial intelligence (Hybrid - 3 days a week in the office - Notting Hill) Description for the Java Software Engineer role:- You will be joining a fast-growing, research-driven company building an artificial intelligence using novel machine learning techniques. My client is revolutionising their industry with … a track record of building things that others have ruled out as impossible. The Java Software engineer will join a very bright, talented team of engineers with the guidance of technologists who have help build up some of the best known technology companies today. You will have a great opportunity to work with a variety of languages, frameworks and … tools. Applicants will need a background in Java and/or Python with a focus on Server side technologies. Core skills for the Java Software Engineer: 5yrs in a commercial Development role Solid experience of Java Good knowledge of Cloud Technologies (AWS) and Microservices Strong database knowledge (SQL and NoSQL) Degree in Computer Science, Engineering, or a related More ❯

Java Software Engineer - Java, Python, AWS, MySQL, NoSql, REST APIs, Microservices, Machine Learning, Artificial intelligence (Hybrid - 3 days a week in the office - Notting Hill) Description for the Java Software Engineer role:- You will be joining a fast-growing, research-driven company building an artificial intelligence using novel machine learning techniques. My client is revolutionising their industry with … a track record of building things that others have ruled out as impossible. The Java Software engineer will join a very bright, talented team of engineers with the guidance of technologists who have help build up some of the best known technology companies today. You will have a great opportunity to work with a variety of languages, frameworks and … tools. Applicants will need a background in Java and/or Python with a focus on Server side technologies. Core skills for the Java Software Engineer: 5yrs in a commercial Development role Solid experience of Java Good knowledge of Cloud Technologies (AWS) and Microservices Strong database knowledge (SQL and NoSQL) Degree in Computer Science, Engineering, or a related More ❯

Software Engineer – Generative AI Hub (Contract) We’re working with a major UK organisation building out its Generative AI Innovation Hub – a fast-paced, cross-functional team delivering short GenAI proof-of-concept projects that turn creative ideas into working prototypes.We’re looking for a Software Engineer who can work across the full stack and bring ideas to More ❯

We're representing a high-performance engineering team developing record-breaking control and computing systems that blend software, hardware, and scientific research into a cutting-edge platform. Please read the information in this job post thoroughly to understand exactly what is expected of potential candidates. Their technology has already achieved world-first milestones for precision and performance, and … they're now scaling towards full production systems. As a Senior Software Engineer, you'll lead the design and development of software that directly drives and monitors complex experimental and control systems. You'll be working at a deep technical level - designing architectures that bridge embedded systems, distributed computing, and data pipelines, all while maintaining real-time precision … and reliability. What you'll be doing Leading the design and development of control and automation software in C++, Python, and Rust. Architecting solutions that integrate custom hardware, sensors, and distributed computing systems. Implementing control, synchronisation, and data acquisition logic to run complex experimental setups. Optimising for performance, latency, and stability across multiple software layers. Contributing to architectural More ❯

At Critical Software we truly believe that our people is what makes us what we are. At the heart of everything we do are our diverse and talented individuals, pushing the boundaries of what ́s possible. Working at Critical is more than just a career choice, is more than a business: we're a community with a strong sense … of purpose, values, and togetherness. Our engineering excellence ensures that we are a trusted partner to some of the world's leading companies in markets such as Aerospace, Railway, Medical Systems, Energy, Finance, and many more. We are always on the lookout for bright and ambitious individuals to join us. Could you be the Software Engineer that we … ve been looking for? What do we expect from you? Academic background in Engineering or similar (Software, Electronics, Physics, Mathematics, etc.) At least 3 years of relevant professional experience in the software development area and knowledge of C, C++ Full-lifecycle software development experience, from initial requirements elicitation to design, coding, testing, documentation, implementation, integration and More ❯

Senior Software Engineer £120K AI Video Platform London (On-site 5 days) Can offer sponsorship and relocation for the right person I'm partnered with an AI company founded by serial entrepreneurs and ex-Lyft, Google, and Zoox engineers, a team with serious technical pedigree across robotics, computer vision, and large-scale ML systems. They've built one of … AI-driven video intelligence platforms on the market, used by hospitals, schools, logistics firms, and enterprises globally, turning static video into actionable insights. Now, they're looking for a Software Engineer who can own their web experience end-to-end, setting best practices, shaping architecture, and delivering truly intuitive interfaces that bring AI to life. You'll join a … tight-knit, elite engineering team (ex-Stanford, Oxford, Cornell) solving problems at the intersection of machine learning, UX, and infrastructure, where every release directly impacts how businesses use AI in the real world. Why it's worth your time: Full ownership of the front-end stack in a technically deep, design-led product. Work alongside top-tier engineers and More ❯

Senior Software Engineer | £120K | AI Video Platform | London (On-site 5 days) *Can offer sponsorship and relocation for the right person* I’m partnered with an AI company founded by serial entrepreneurs and ex-Lyft, Google, and Zoox engineers, a team with serious technical pedigree across robotics, computer vision, and large-scale ML systems. They’ve built one of … AI-driven video intelligence platforms on the market, used by hospitals, schools, logistics firms, and enterprises globally, turning static video into actionable insights. Now, they’re looking for a Software Engineer who can own their web experience end-to-end, setting best practices, shaping architecture, and delivering truly intuitive interfaces that bring AI to life. You’ll join a … tight-knit, elite engineering team (ex-Stanford, Oxford, Cornell) solving problems at the intersection of machine learning, UX, and infrastructure, where every release directly impacts how businesses use AI in the real world. 💡 Why it’s worth your time: Full ownership of the front-end stack in a technically deep, design-led product. Work alongside top-tier engineers and More ❯

Senior Software Engineer | £120K | AI Video Platform | London (On-site 5 days) *Can offer sponsorship and relocation for the right person* I’m partnered with an AI company founded by serial entrepreneurs and ex-Lyft, Google, and Zoox engineers, a team with serious technical pedigree across robotics, computer vision, and large-scale ML systems. They’ve built one of … AI-driven video intelligence platforms on the market, used by hospitals, schools, logistics firms, and enterprises globally, turning static video into actionable insights. Now, they’re looking for a Software Engineer who can own their web experience end-to-end, setting best practices, shaping architecture, and delivering truly intuitive interfaces that bring AI to life. You’ll join a … tight-knit, elite engineering team (ex-Stanford, Oxford, Cornell) solving problems at the intersection of machine learning, UX, and infrastructure, where every release directly impacts how businesses use AI in the real world. 💡 Why it’s worth your time: Full ownership of the front-end stack in a technically deep, design-led product. Work alongside top-tier engineers and More ❯

Software Engineer (Italian Speaking) Role Opportunity for a Software Engineer (Italian Speaking) to join a scaling startup in the AI and Healthcare technology sector Salary up to £90k + Equity Paddington-based (4-5 days per week in-office) Tech environment: React | React Native | Node.js | AWS | Firebase | Supabase | PostgreSQL If you wish to keep your CV/data … AI-powered technology startup reshaping how professionals and clients manage care and engagement through intelligent automation and data insights. Our mission is to improve wellbeing outcomes by combining innovative software, AI-driven tools, and seamless user experiences. Backed by strong funding and a world-class leadership team, we're looking for a talented Software Engineer to help deliver … solutions. WHAT YOU WILL BE DOING: Develop and deliver new product features across the full stack using React/React Native and Node.js . Collaborate with the CTO and Engineering Director to design and implement new capabilities for the platform. Work on AI-powered integrations and innovative features, such as an in-platform AI Copilot . Improve platform scalability More ❯

Senior Software Engineer - London - £120k Please note - this role will require you to work from the London based office three days per week. You must have the unrestricted right to work in the UK to be eligible for this role - this organisation is not able to offer sponsorship. Are you passionate about building cutting-edge technology solutions that power More ❯

and winter flu jabs vouchers- Cycle to work scheme- Investing in your professional development with ongoing quality training and career development opportunitiesThis is a brilliant opportunity for a talented software engineer who’s confident working with Node.js, TypeScript, and PostgreSQL to join a team that values creativity and growth.You’ll be enabled to keep learning, experiment with new ideas … performant APIs and data models- Experience managing PostgreSQL databases including, schema design and optimisationThe closing date for this role is Sunday 9th November 2025.Other organisations may call this role Software Engineer, Software Developer, Back End Software Engineer, Server-Side Developer, Full Stack Developer, or API Developer.Our commitment to Equality, Diversity & Inclusion:We are happy to consider any More ❯