1,876 to 1,900 of 2,460 Software Engineering Jobs in the South East

Senior Software Engineer – Fullstack/Backend Leaning (TypeScript, Node.js, React, AWS) Full-time | London (Hybrid) Our client is a well-funded, high-growth FinTech SaaS business redefining how private equity operates. The platform empowers investment professionals through automation and intelligent collaboration, replacing the manual, fragmented processes that have long dominated the industry. Founded by seasoned private equity and technology … the company is entering an exciting scale-up phase with proven product-market fit, strong industry adoption, and a clear multi-product roadmap. We’re seeking an experienced Senior Software Engineer who thrives in dynamic, scaling environments and enjoys building robust, enterprise-grade SaaS platforms. You’ll help shape architecture, deliver new features end-to-end, and contribute to … technical strategy in a lean, high-calibre engineering team. What You’ll Do Design and build scalable backend and fullstack solutions in Node.js, TypeScript, React, AWS Collaborate closely on architecture, data models, and API design (REST, GraphQL, tRPC, WebSockets) Balance speed with long-term maintainability — quality and performance matter here Work on innovative challenges across document parsing, data visualisation More ❯

Senior Software Engineer – Fullstack/Backend Leaning (TypeScript, Node.js, React, AWS) Full-time | London (Hybrid) Our client is a well-funded, high-growth FinTech SaaS business redefining how private equity operates. The platform empowers investment professionals through automation and intelligent collaboration, replacing the manual, fragmented processes that have long dominated the industry. Founded by seasoned private equity and technology … the company is entering an exciting scale-up phase with proven product-market fit, strong industry adoption, and a clear multi-product roadmap. We’re seeking an experienced Senior Software Engineer who thrives in dynamic, scaling environments and enjoys building robust, enterprise-grade SaaS platforms. You’ll help shape architecture, deliver new features end-to-end, and contribute to … technical strategy in a lean, high-calibre engineering team. What You’ll Do Design and build scalable backend and fullstack solutions in Node.js, TypeScript, React, AWS Collaborate closely on architecture, data models, and API design (REST, GraphQL, tRPC, WebSockets) Balance speed with long-term maintainability — quality and performance matter here Work on innovative challenges across document parsing, data visualisation More ❯

Senior Software Engineer – Fullstack/Backend Leaning (TypeScript, Node.js, React, AWS) Full-time | London (Hybrid) Our client is a well-funded, high-growth FinTech SaaS business redefining how private equity operates. The platform empowers investment professionals through automation and intelligent collaboration, replacing the manual, fragmented processes that have long dominated the industry. Founded by seasoned private equity and technology … the company is entering an exciting scale-up phase with proven product-market fit, strong industry adoption, and a clear multi-product roadmap. We’re seeking an experienced Senior Software Engineer who thrives in dynamic, scaling environments and enjoys building robust, enterprise-grade SaaS platforms. You’ll help shape architecture, deliver new features end-to-end, and contribute to … technical strategy in a lean, high-calibre engineering team. What You’ll Do Design and build scalable backend and fullstack solutions in Node.js, TypeScript, React, AWS Collaborate closely on architecture, data models, and API design (REST, GraphQL, tRPC, WebSockets) Balance speed with long-term maintainability — quality and performance matter here Work on innovative challenges across document parsing, data visualisation More ❯

Code (IaC) using tools such as Ansible, Terraform, Saltstack, or Puppet . Support and manage databases - primarily PostgreSQL , with exposure to MySQL, Elastic, and MongoDB . Work closely with software engineers to deploy microservices architectures . Monitor and improve system performance, security, and reliability . Support business systems such as O365, MS Teams, and OneDrive . Contribute to continuous … improvement initiatives across DevOps and engineering practices. What We're Looking For Strong experience with Linux systems and cloud platforms . Hands-on experience with CI/CD tools and automation frameworks . Solid knowledge of Python, Golang, and/or Java (desirable). Understanding of microservices architectures and modern deployment practices. Experience managing relational and NoSQL databases . More ❯

Code (IaC) using tools such as Ansible, Terraform, Saltstack, or Puppet . Support and manage databases – primarily PostgreSQL , with exposure to MySQL, Elastic, and MongoDB . Work closely with software engineers to deploy microservices architectures . Monitor and improve system performance, security, and reliability . Support business systems such as O365, MS Teams, and OneDrive . Contribute to continuous … improvement initiatives across DevOps and engineering practices. 🧠 What We’re Looking For Strong experience with Linux systems and cloud platforms . Hands-on experience with CI/CD tools and automation frameworks . Solid knowledge of Python, Golang, and/or Java (desirable). Understanding of microservices architectures and modern deployment practices. Experience managing relational and NoSQL databases . More ❯

Code (IaC) using tools such as Ansible, Terraform, Saltstack, or Puppet . Support and manage databases – primarily PostgreSQL , with exposure to MySQL, Elastic, and MongoDB . Work closely with software engineers to deploy microservices architectures . Monitor and improve system performance, security, and reliability . Support business systems such as O365, MS Teams, and OneDrive . Contribute to continuous … improvement initiatives across DevOps and engineering practices. 🧠 What We’re Looking For Strong experience with Linux systems and cloud platforms . Hands-on experience with CI/CD tools and automation frameworks . Solid knowledge of Python, Golang, and/or Java (desirable). Understanding of microservices architectures and modern deployment practices. Experience managing relational and NoSQL databases . More ❯

Code (IaC) using tools such as Ansible, Terraform, Saltstack, or Puppet . Support and manage databases – primarily PostgreSQL , with exposure to MySQL, Elastic, and MongoDB . Work closely with software engineers to deploy microservices architectures . Monitor and improve system performance, security, and reliability . Support business systems such as O365, MS Teams, and OneDrive . Contribute to continuous … improvement initiatives across DevOps and engineering practices. 🧠 What We’re Looking For Strong experience with Linux systems and cloud platforms . Hands-on experience with CI/CD tools and automation frameworks . Solid knowledge of Python, Golang, and/or Java (desirable). Understanding of microservices architectures and modern deployment practices. Experience managing relational and NoSQL databases . More ❯

Senior Software Engineer - Full Stack - TypeScript, Node React, AWS, Serverless, DynamoDB - Energy & Utilities Cleantech SaaS Location: Hybrid/Remote - London (flexibility available) Salary: Up to £80,000 About the Company This role is with, in our opinion, one of the most exciting SaaS firms in the energy and utilities space, delivering cleantech solutions to major businesses worldwide. Their mission … Experience: Strong experience with TypeScript in both frontend and backend development. Proficiency with Node.js, React and building serverless applications. Experience with AWS services, particularly Lambda and DynamoDB. Familiarity with software development best practice, including testing, CI/CD and version control. Passion for writing clean, efficient code and delivering high-quality software. Interest in energy, utilities or cleantech sectors More ❯

Senior Software Engineer - Full Stack - TypeScript, Node React, AWS, Serverless, DynamoDB - Energy & Utilities Cleantech SaaS Location: Hybrid/Remote - London (flexibility available) Salary: Up to £80,000 About the Company This role is with, in our opinion, one of the most exciting SaaS firms in the energy and utilities space, delivering cleantech solutions to major businesses worldwide. Their mission … Experience: Strong experience with TypeScript in both frontend and backend development. Proficiency with Node.js, React and building serverless applications. Experience with AWS services, particularly Lambda and DynamoDB. Familiarity with software development best practice, including testing, CI/CD and version control. Passion for writing clean, efficient code and delivering high-quality software. Interest in energy, utilities or cleantech sectors More ❯

Senior Software Engineer - Full Stack - TypeScript, Node React, AWS, Serverless, DynamoDB - Energy & Utilities Cleantech SaaS Location: Hybrid/Remote - London (flexibility available) Salary: Up to £80,000 About the Company This role is with, in our opinion, one of the most exciting SaaS firms in the energy and utilities space, delivering cleantech solutions to major businesses worldwide. Their mission … Experience: Strong experience with TypeScript in both frontend and backend development. Proficiency with Node.js, React and building serverless applications. Experience with AWS services, particularly Lambda and DynamoDB. Familiarity with software development best practice, including testing, CI/CD and version control. Passion for writing clean, efficient code and delivering high-quality software. Interest in energy, utilities or cleantech sectors More ❯

Senior Software Engineer - Full Stack - TypeScript, Node React, AWS, Serverless, DynamoDB - Energy & Utilities Cleantech SaaS Location: Hybrid/Remote - London (flexibility available) Salary: Up to £80,000 About the Company This role is with, in our opinion, one of the most exciting SaaS firms in the energy and utilities space, delivering cleantech solutions to major businesses worldwide. Their mission … Experience: Strong experience with TypeScript in both frontend and backend development. Proficiency with Node.js, React and building serverless applications. Experience with AWS services, particularly Lambda and DynamoDB. Familiarity with software development best practice, including testing, CI/CD and version control. Passion for writing clean, efficient code and delivering high-quality software. Interest in energy, utilities or cleantech sectors More ❯

Location: West London (Hybrid - 2 days/week on site) Contract: 6 months initial (extensions highly likely) Start: ASAP Eligibility: UK-based candidates only Rate: Market rates GraphQL-focused Software Engineer who can design, implement, and evolve high-performing APIs that scale. If crafting elegant GraphQL schemas, building robust TypeScript/Node.js services, and deploying to cloud-native environments … you're interested in this opportunity, please email your latest CV with reate and availability. Staffworx Limited are a UK based recruitment consultancy supporting the global digital, E-commerce, software & business consulting sectors JBRP1_UKTJ More ❯

Location: West London (Hybrid - 2 days/week on site) Contract: 6 months initial (extensions highly likely) Start: ASAP Eligibility: UK-based candidates only Rate: Market rates GraphQL-focused Software Engineer who can design, implement, and evolve high-performing APIs that scale. If crafting elegant GraphQL schemas, building robust TypeScript/Node.js services, and deploying to cloud-native environments … you're interested in this opportunity, please email your latest CV with reate and availability. Staffworx Limited are a UK based recruitment consultancy supporting the global digital, E-commerce, software & business consulting sectors JBRP1_UKTJ More ❯

Senior Software Engineer - Trading Systems Clean Energy Hybrid (UK) £100k-£180k DOE + Bonus Are you a seasoned software engineer ready to build the trading and monitoring systems powering the UK's next generation of clean energy? This is your opportunity to join a leading Greentech with over £400 million in funding. This is a complex, high-impact … engineering challenge ideal for someone who thrives is looking to join as the first engineer as they build this trading system. As a Senior Software Engineer, you will: Design and build automated trading systems for UK energy markets Develop real-time bidding, dispatch, and optimization tools Build monitoring dashboards for LAES operations and grid stability systems Develop data … pipelines using Kafka and TimescaleDB Create microservices to connect trading platforms and grid operators What We're Looking For Strong Software Fundamentals: Excellent Python skills (Rust is a bonus) and experience designing distributed systems, REST APIs, and microservices Data & Infrastructure: Experience with Kafka or similar streaming technologies, PostgreSQL, and time-series data management DevOps & Observability: Familiar with Docker, monitoring More ❯

Senior Software Engineer – Trading Systems | Clean Energy | Hybrid (UK) | £100k–£180k DOE + Bonus Are you a seasoned software engineer ready to build the trading and monitoring systems powering the UK’s next generation of clean energy? This is your opportunity to join a leading Greentech with over £400 million in funding. This is a complex, high-impact … engineering challenge ideal for someone who thrives is looking to join as the first engineer as they build this trading system. As a Senior Software Engineer, you will: Design and build automated trading systems for UK energy markets Develop real-time bidding, dispatch, and optimization tools Build monitoring dashboards for LAES operations and grid stability systems Develop data … pipelines using Kafka and TimescaleDB Create microservices to connect trading platforms and grid operators What We’re Looking For Strong Software Fundamentals: Excellent Python skills (Rust is a bonus) and experience designing distributed systems, REST APIs, and microservices Data & Infrastructure: Experience with Kafka or similar streaming technologies, PostgreSQL, and time-series data management DevOps & Observability: Familiar with Docker, monitoring More ❯

Senior Software Engineer – Trading Systems | Clean Energy | Hybrid (UK) | £100k–£180k DOE + Bonus Are you a seasoned software engineer ready to build the trading and monitoring systems powering the UK’s next generation of clean energy? This is your opportunity to join a leading Greentech with over £400 million in funding. This is a complex, high-impact … engineering challenge ideal for someone who thrives is looking to join as the first engineer as they build this trading system. As a Senior Software Engineer, you will: Design and build automated trading systems for UK energy markets Develop real-time bidding, dispatch, and optimization tools Build monitoring dashboards for LAES operations and grid stability systems Develop data … pipelines using Kafka and TimescaleDB Create microservices to connect trading platforms and grid operators What We’re Looking For Strong Software Fundamentals: Excellent Python skills (Rust is a bonus) and experience designing distributed systems, REST APIs, and microservices Data & Infrastructure: Experience with Kafka or similar streaming technologies, PostgreSQL, and time-series data management DevOps & Observability: Familiar with Docker, monitoring More ❯

Senior Software Engineer – Trading Systems | Clean Energy | Hybrid (UK) | £100k–£180k DOE + Bonus Are you a seasoned software engineer ready to build the trading and monitoring systems powering the UK’s next generation of clean energy? This is your opportunity to join a leading Greentech with over £400 million in funding. This is a complex, high-impact … engineering challenge ideal for someone who thrives is looking to join as the first engineer as they build this trading system. As a Senior Software Engineer, you will: Design and build automated trading systems for UK energy markets Develop real-time bidding, dispatch, and optimization tools Build monitoring dashboards for LAES operations and grid stability systems Develop data … pipelines using Kafka and TimescaleDB Create microservices to connect trading platforms and grid operators What We’re Looking For Strong Software Fundamentals: Excellent Python skills (Rust is a bonus) and experience designing distributed systems, REST APIs, and microservices Data & Infrastructure: Experience with Kafka or similar streaming technologies, PostgreSQL, and time-series data management DevOps & Observability: Familiar with Docker, monitoring More ❯

Job Title: Senior Embedded Software Engineer (C++) Duration: 12 months Workload: Full time hours Setup: Freelance (Daily rate/Limited Company/Umbrella/Sole Trader) Location: Luton (4 days onsite, 1 day remote) We're looking for a skilled Embedded Software Engineer to join a cutting-edge electronic warfare project for a leading defence client. Key Responsibilities … Develop and maintain embedded software for electronic warfare systems. Collaborate within integrated project teams to deliver robust, high-quality code. Manage requirements using IBM DOORS and ensure full traceability. Conduct unit testing and peer reviews to maintain code quality. Document work thoroughly and maintain configuration control. Must-Have Skills: Strong C+ programming experience. Proficiency with Visual Studio 2019 and More ❯

C# Software Engineer About the Role: We are seeking an experienced Embedded Software Engineer to develop safety-related real-time application software for next-generation systems. This is a hands-on role covering the full software lifecycle, from architecture and design to implementation and testing. Key Responsibilities: Design, implement, and verify embedded software for complex … management processes. Conduct unit testing and code coverage analysis using industry-standard tools. Collaborate with multidisciplinary teams in a lab environment. Essential Skills: Strong experience in bare-metal embedded software development using C/C++. Knowledge of safety-critical standards (e.g., DO178C Level B, SIL-4). Familiarity with tools such as DOORS, LDRA, RAPITA, and configuration control systems More ❯

Software Engineer - Financial Services A leading UK bank is seeking Full Stack Engineers to join its new tech hub and help redefine engineering excellence. In addition, the bank is focused on bridging the gap between product management and hands-on engineering, while fostering a culture of continuous improvement. What You’ll Do: Design, architect, and develop industry … leading software solutions using a variety of programming languages, frameworks, and tools. Deliver high-quality, complex software that enhances and elevates the engineering standards across the bank. Contribute to every stage of the software development lifecycle, from initial development through rigorous testing and successful deployment to production. Work closely with product teams, business stakeholders, and other … experts to create strategic solutions that ensure seamless integration and exceptional outcomes. Key Priorities: Proficiency in Java and AWS Experience with Salesforce development and React A strong focus on engineering efficiency, including knowledge of DORA metrics, DevOps methodologies, and practices like TDD or BDD An ambitious growth mindset, eager to innovate and drive change Reports directly to the Engineering More ❯

Software Engineer - Financial Services A leading UK bank is seeking Full Stack Engineers to join its new tech hub and help redefine engineering excellence. In addition, the bank is focused on bridging the gap between product management and hands-on engineering, while fostering a culture of continuous improvement. What You’ll Do: Design, architect, and develop industry … leading software solutions using a variety of programming languages, frameworks, and tools. Deliver high-quality, complex software that enhances and elevates the engineering standards across the bank. Contribute to every stage of the software development lifecycle, from initial development through rigorous testing and successful deployment to production. Work closely with product teams, business stakeholders, and other … experts to create strategic solutions that ensure seamless integration and exceptional outcomes. Key Priorities: Proficiency in Java and AWS Experience with Salesforce development and React A strong focus on engineering efficiency, including knowledge of DORA metrics, DevOps methodologies, and practices like TDD or BDD An ambitious growth mindset, eager to innovate and drive change Reports directly to the Engineering More ❯

Software Engineer - Financial Services A leading UK bank is seeking Full Stack Engineers to join its new tech hub and help redefine engineering excellence. In addition, the bank is focused on bridging the gap between product management and hands-on engineering, while fostering a culture of continuous improvement. What You’ll Do: Design, architect, and develop industry … leading software solutions using a variety of programming languages, frameworks, and tools. Deliver high-quality, complex software that enhances and elevates the engineering standards across the bank. Contribute to every stage of the software development lifecycle, from initial development through rigorous testing and successful deployment to production. Work closely with product teams, business stakeholders, and other … experts to create strategic solutions that ensure seamless integration and exceptional outcomes. Key Priorities: Proficiency in Java and AWS Experience with Salesforce development and React A strong focus on engineering efficiency, including knowledge of DORA metrics, DevOps methodologies, and practices like TDD or BDD An ambitious growth mindset, eager to innovate and drive change Reports directly to the Engineering More ❯

Job Description Your impact We are on the hunt for talented software engineers to support our Integrated Sensors & Protection line of business, working on a range of defence projects. Direct industry experience is not required; we are happy to explore all backgrounds and help develop all our software engineers. We want to develop a new generation of features … and capabilities using innovative software solutions and we need you to create them. You will be a key part in a community of world-class software engineers who will continuously improve, collaborate and innovate with other engineers to create market-leading products within the defence industry. What You'll Bring Experience of C++ software development experience It … is useful if you have some of these skills C# application development Networking experience Experience with developing Windows & Linux applications Familiarity with the Software lifecycle processes including Requirements Management, Design, Implementation, Test and Integration Familiarity with Configuration Management process and tools e.g. git Software design experience e.g. SysML/UML Test case/procedure development experience Knowledge of More ❯

Multiple Software Engineers - Palantir, Strong ETL, AWS & Python -Fully Remote - UK Based - Offices based in London - MUST BE SECURITY CLEARED - DV/SC Areti Group has exclusively partnered with a rapidly growing startup who are seeking 8 Software Engineers to start ASAP. These roles are fully remote. This business has grown by 75% this year and is now … looking for another 30 hires between now and February. My client is seeking highly skilled and motivated Software Engineers with expertise in ETL, AWS, and Python. The ideal candidate will have a proven track record in designing and creating ETL pipelines to support major customer initiatives at the early stages of projects. This individual will play a critical role … in our data engineering team, contributing to the development and maintenance of robust and scalable data solutions. Responsibilities include the following: Responsibilities: Strong Palantir experience is desirable ETL Pipeline Design and Implementation: Design, develop, and implement efficient and scalable ETL pipelines to support the extraction, transformation, and loading of data from diverse sources. Ensure the pipelines are optimized for More ❯

Python Software Engineer – High-Frequency Trading We're working with a high-frequency trading (HFT) firm that is looking to expand its technology team with a Python Software Engineer. This is an opportunity to join a trading firm operating at the cutting edge of global markets, where technology and speed are paramount. They build and run highly scalable … ultra-low latency trading systems that compete across major global exchanges. You’ll work on some of the most complex and rewarding engineering challenges in the financial technology space. The Role As a Python Software Engineer, you’ll collaborate with traders, quantitative researchers, and other developers to design, develop, and optimise trading infrastructure. You’ll be directly contributing … time systems, or algorithmic trading. Why Apply? Opportunity to work on high-impact systems used in live trading. Collaborate with some of the brightest minds in quantitative finance and software engineering. Competitive compensation package with a base salary, plus bonus. We are reviewing applications on a rolling basis. If this role sounds like a fit, apply now to learn More ❯