1 to 25 of 184 Senior Software Engineer Jobs in the South East

CONTRACT SENIOR SOFTWARE ENGINEER - eDV CLEARED NEW CONTRACT JOB OPPORTUNITY AVAILABLE WITHIN A LEADING NATIONAL SECURITY COMPANY FOR A SENIOR SOFTWARE ENGINEER WITH eDV CLEARANCE Contract job opportunity for a Senior Software Engineer Globally leading defence/cyber security company £500 - £750 per day (inside and outside IR35 roles available) London … based organisation in an easily accessible location Contract Senior Software Engineer To apply please call or email WHO WE ARE? We are recruiting multiple contract Senior Software Engineers to work with various clients in London ranging from R&D companies, Multi-National Consultancies to SME's and product based companies. Due to the nature of … the work these clients do, you must hold enhanced DV Security Clearance. WHAT WILL THE SENIOR SOFTWARE ENGINEER BE DOING? As a Senior Software Engineer, you will work with an experienced agile team to design and deliver packages of bespoke work, work development teams and liaise with customers. You will work through the entire More ❯

SENIOR SOFTWARE ENGINEER - eDV CLEARED NEW PERMANENT JOB OPPORTUNITY AVAILABLE WITHIN A GLOBALLY LEADING NATIONAL SECURITY COMPANY FOR A SENIOR SOFTWARE ENGINEER WITH eDV CLEARANCE Permanent job opportunity for a Senior Software Engineer Globally leading defence/cyber security company Salary up to £100,000 plus clearance bonus London based organisation … in an easily accessible location Permanent Software Engineer To apply please call/or email WHO WE ARE? We are recruiting Senior and Lead Software Engineers to work with a multi-national, industry leading National Security client in central London. Due to the nature of the work you must hold enhanced DV Security Clearance. WHAT WILL … THE SENIOR SOFTWARE ENGINEER BE DOING? As a Senior Software Engineer, you will work with an experienced agile team to design and deliver packages of bespoke work, work development teams and liaise with customers. You will work through the entire software development life cycle from requirements capture to R&D, implementation to automation. More ❯

Senior Software Engineer (Python) – Reducing Carbon Emissions with Machine Learning! Python on AWS £90-£110,000 per annum plus stock London Office - 1-2 days a week Are you a Senior Software Engineer with a passion for working with curious, humble colleagues to build exceptional customer-focused products using Python? Do you align with … their principles – “Work as much as you want, where you want” - giving Software Engineers the autonomy and support to perform at their best? Do you want to be part of a period of significant growth and opportunity, shaping elegant solutions to complex challenges and guiding engineering excellence? Then this is a role you should explore... Senior Software Engineer (Python) – We are working with one of the UKs most exciting scale-ups to find them Senior Software Engineers with exceptional knowledge of building great products in Python on AWS. They use machine learning technology to help tackle climate change by reducing carbon emissions. They are at a critical period in their journey and will More ❯

Senior Software Engineer (Python) – Reducing Carbon Emissions with Machine Learning! Python on AWS £90-£110,000 per annum plus stock London Office - 1-2 days a week Are you a Senior Software Engineer with a passion for working with curious, humble colleagues to build exceptional customer-focused products using Python? Do you align with … their principles – “Work as much as you want, where you want” - giving Software Engineers the autonomy and support to perform at their best? Do you want to be part of a period of significant growth and opportunity, shaping elegant solutions to complex challenges and guiding engineering excellence? Then this is a role you should explore... Senior Software Engineer (Python) – We are working with one of the UKs most exciting scale-ups to find them Senior Software Engineers with exceptional knowledge of building great products in Python on AWS. They use machine learning technology to help tackle climate change by reducing carbon emissions. They are at a critical period in their journey and will More ❯

Senior Software Engineer Tech : AWS, NodeJS, TypeScript, JavaScript, ReactJS, React Native Why? scaling FinTech, revolutionising the industry Location : Hybrid - 1-2 days in the office (Central London) Our Client A new UK-based financial services provider is launching credit card, personal loans and insurance offerings aimed at delivering fair, flexible, and user-friendly financial products to consumers. … The organisation is committed to empowering individuals by enhancing their understanding and control of personal finance through clarity, intelligence, and technology. Senior Software Engineer - Responsibilities Design, develop, and maintain advanced applications. Collaborate with cross-functional teams to define, design, and ship new features. Optimize components for maximum performance across a vast array of web- capable devices and … the highest quality. Troubleshoot and debug to optimize performance. Provide code reviews, feedback, and mentorship to junior developers. Stay up-to-date with new technology trends, applications, and protocols Senior Software Engineer - Experience Required Proven experience as a Full Stack Engineer or similar role with a strong portfolio of projects. Expertise in Node.js and AWS Lambda More ❯

About Us Software helps to enable the world-leading science performed at Diamond. Our software systems facilitate operations at all levels, including the low-level control of synchrotron and beamline hardware, the planning, execution and monitor of experiments, data archiving and retrieval, data processing and visualisation, the application for beamtime, and capture of remote experiment plans and samples. … Our software engineers work alongside our scientists to develop innovative and robust solutions to keep Diamond at the forefront of scientific research. At Diamond we are currently undertaking a major upgrade of the facility, known as Diamond-II. Diamond-II will combine a new machine and new beamlines with a comprehensive series of upgrades to optics, detectors, sample environments … sample delivery capabilities and computing, which will ultimately generate an even more brilliant light source at a higher energy. About the Role We now have an opportunity for a software engineer within the DAQ group team that supports and develops software for Diamonds Soft Condensed Matter(SCM)and Crystallography(X)science groupson a 4-year fixed term More ❯

Senior Software Engineer, C++, COR7263 This is a rare opportunity for an experienced, Senior Software Engineer with skills in C++ and Rust, to join an historic British icon at the forefront of Engineering. The Role Ideally with a background in aerodynamics, data science, vehicle dynamics or computer simulations, the Senior Software Engineer will work closely with Design Engineers, Mechanical Engineers and other technical users, to gather and understand the requirements necessary to ultimately design, develop and maintain the software and computational tools they use - a variety of applications across both web and desktop, such as state-of-the-art simulations, real time data and bespoke analysis tools. Benefits include: Bonus … within Engineering, or other technical environments would be of benefit I want to do that! If you have any questions or would simply welcome a chat about this excellent Senior Software Engineer position and company, just call me or drop me an email, as I'd love to hear from you! If, though, you think this role More ❯

Senior Software Engineer | Distributed Systems | Sustainable Cloud Native Platform 💸Up to £110,000 per annum plus bonus plus stock 🏠Central London office 🖱️Golang, Rust, C, Kubernetes, Linux, Cloud Native, Distributed systems... Are you a Senior Software Engineer with extensive knowledge of building distributed systems? Looking to join a company who are solving genuine problems … a real impact on projects? If so... I'm partnered with a very exciting Cloud scale-up who have received record Series A funding and are looking for innovative Senior Software Engineers to join their ambitious team! With a new VP of Engineering who has spent much of their career building out a world leading Cloud platform, the … to build out state-of-the-art, Greenfield code which can focus on being the worlds most accountable and sustainable cloud provider🌳 What they're looking for in a Senior Software Engineer: Tech agnostic but preferable experience working with Golang, Rust, C/C++ or Java. In-depth knowledge of distributed systems, building solutions at scale where More ❯

Senior Software Engineer | Distributed Systems | Sustainable Cloud Native Platform 💸Up to £110,000 per annum plus bonus plus stock 🏠Central London office 🖱️Golang, Rust, C, Kubernetes, Linux, Cloud Native, Distributed systems... Are you a Senior Software Engineer with extensive knowledge of building distributed systems? Looking to join a company who are solving genuine problems … a real impact on projects? If so... I'm partnered with a very exciting Cloud scale-up who have received record Series A funding and are looking for innovative Senior Software Engineers to join their ambitious team! With a new VP of Engineering who has spent much of their career building out a world leading Cloud platform, the … to build out state-of-the-art, Greenfield code which can focus on being the worlds most accountable and sustainable cloud provider🌳 What they're looking for in a Senior Software Engineer: Tech agnostic but preferable experience working with Golang, Rust, C/C++ or Java. In-depth knowledge of distributed systems, building solutions at scale where More ❯

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

Senior Software Engineer/Developer (Python FastAPI Data) London to £90k Are you a data centric Software Engineer with strong Python and SQL skills? You could be progressing your career in a senior, hands-on role at a fast growing, global Insurance Underwriting technology provider that focusses on developing a complex SaaS calculation platform … for rapidly growing Cybersecurity insurance markets. As a Senior Software Engineer you will design and develop data centric backend services for the core platform with a focus on Python coding and building FastAPIs within an Azure environment with Databricks. You'll participate in the design and implementation of advanced mechanisms for data ingestion, transformation, mass parallel orchestration … s a hybrid work from home model with three days a week in the high spec London, City office with rooftop bar. About you: You have strong Python backend software engineering skills You have experience of building FastAPIs You have a good knowledge of public cloud services, they're using Azure but experience with AWS or GCP is fine More ❯

Senior Software Engineer (TypeScript Full Stack) London/WFH to £100k Do you enjoy problem solving and working with a range of technologies including functional programming languages such as Elixir, using the right tool for the job? You could be progressing your career in a senior, hands-on Software Engineer role at a successful … office per week) Vitality Healthcare Continuous career development and learning opportunities Influential role as part of a small, close knit team Complex and interesting work Your role: As a Senior Software Engineer you will take ownership, working on technically challenging Greenfield development projects. You'll be working on complex problems with scalability and reliability in mind, across … educated in Computer Science or similar STEM discipline, having achieved a 2.1 or above from a Russel Group/Oxbridge or top 100 global university You are an experienced software engineer with a strong knowledge of best practices and Computer Science fundamentals and experience of delivering complex, data centric software You have advanced analytical and problem solving More ❯

We're looking for a Senior Software Engineer to join our team and take our technology and your career into new territories! MBDA is a great a place to learn about the company's entire product portfolio, whilst embracing the change to DevOps and other innovative technologies! Job Title: Senior Software Engineer Salary … paternity leave, neonatal leave and fertility testing and treatments. Facilities : Fantastic site facilities including subsidised meals, free car parking and much more. The opportunity: We're looking for a Senior Software Engineer to join our team and take our technology and your career into new territories! Test Software UK collaborate across Electronic Engineering, our Test Centre … of Excellence and Software Engineering to deliver the MBDA UK test capability. Our mission as a function is to facilitate robust and timely test of missile systems and ensure MBDA continues to provide a decisive military capability for our home nations and their allies. Spanning a diverse portfolio of work packages, Test Software UK directly influences the company More ❯

Senior Software Engineer We're currently working with a growing SaaS company based in Banbury that are looking for a Senior Software Engineer skilled with C# ASP.NET, Angular, and SQL. This role will naturally grow in to a Lead Engineer position as the team grows. You will be working to develop and build … out nationally, and then internationally. This role is based in Banbury, and it will require you to be onsite a minimum of two days per week. Essential Experience: Professional software engineering experience (typically 5+ years) using C#/ASP.NET (Core & Framework) and modern JavaScript/TypeScript frameworks, particularly Angular (v8+). Significant understanding and practical experience with relational databases … Azure). Benefits: Competitive Base Salary Hybrid Working Private Healthcare 33 Days Holiday 37.5 Hour work weeks - flexi-hours Great career progression This is a great opportunity for a Senior Software Engineer skilled with C# .NET and Angular, to join a great company offering an incredible benefits package, with the opportunity for further career progression. Please apply More ❯

Senior C++ Software Engineer/Developer (Linux SQL C++17) London/WFH to £110k Global-leading FinTech is seeking a Senior C++ Software Engineer to take ownership of strategic enhancements on their core platform, as well as directly on bespoke client projects. The organisation is a pioneer in the field of cross-asset securities … and derivatives post-trade processing technology, and have created ground-breaking, adaptable software that produces secure and scalable solutions for peak operational efficiency and optimum business performance for their clients. This is an exciting opportunity to accelerate your career alongside established business and technology leaders, and gain/deepen your finance experience. As a C++ Software Engineer … motivated by working on cutting-edge systems and engineering complex solutions You're a positive, proactive team member who excels when working collaboratively You have a strong knowledge of software engineering best practices You're degree educated, having achieved a 2.1 or above in a STEM discipline Ideally you will have experience working in a financial services or trading More ❯

Senior .NET Software Engineer - An esteemed investment management company is seeking an experienced Senior .NET Software Engineer to lead the development of robust and scalable financial solutions. This high-impact role provides an opportunity to shape technology strategies and mentor junior engineers within a collaborative and growth-focused team. Responsibilities for the Senior .NET Software Engineer: Drive the design, development, and deployment of complex software solutions using .NET technologies. Architect scalable systems to support evolving business requirements and ensure high performance. Take ownership of key projects, managing technical deliverables and ensuring deadlines are met. Provide technical leadership, guiding junior engineers and promoting best practices within the team. Collaborate with … stakeholders to align technical implementations with business objectives. Skills & Experience for the Senior .NET Software Engineer: Extensive experience in .NET development, including expertise in C#, ASP.NET Core, and microservices architecture. Strong knowledge of database systems, including SQL and NoSQL technologies. Demonstrated success in delivering complex technical projects within a financial or investment setting. Experience with cloud platforms More ❯

Senior .NET Software Engineer - An esteemed investment management company is seeking an experienced Senior .NET Software Engineer to lead the development of robust and scalable financial solutions. This high-impact role provides an opportunity to shape technology strategies and mentor junior engineers within a collaborative and growth-focused team. Responsibilities for the Senior .NET Software Engineer: Drive the design, development, and deployment of complex software solutions using .NET technologies. Architect scalable systems to support evolving business requirements and ensure high performance. Take ownership of key projects, managing technical deliverables and ensuring deadlines are met. Provide technical leadership, guiding junior engineers and promoting best practices within the team. Collaborate with … stakeholders to align technical implementations with business objectives. Skills & Experience for the Senior .NET Software Engineer: Extensive experience in .NET development, including expertise in C#, ASP.NET Core, and microservices architecture. Strong knowledge of database systems, including SQL and NoSQL technologies. Demonstrated success in delivering complex technical projects within a financial or investment setting. Experience with cloud platforms More ❯

Senior .NET Software Engineer - An esteemed investment management company is seeking an experienced Senior .NET Software Engineer to lead the development of robust and scalable financial solutions. This high-impact role provides an opportunity to shape technology strategies and mentor junior engineers within a collaborative and growth-focused team. Responsibilities for the Senior .NET Software Engineer: Drive the design, development, and deployment of complex software solutions using .NET technologies. Architect scalable systems to support evolving business requirements and ensure high performance. Take ownership of key projects, managing technical deliverables and ensuring deadlines are met. Provide technical leadership, guiding junior engineers and promoting best practices within the team. Collaborate with … stakeholders to align technical implementations with business objectives. Skills & Experience for the Senior .NET Software Engineer: Extensive experience in .NET development, including expertise in C#, ASP.NET Core, and microservices architecture. Strong knowledge of database systems, including SQL and NoSQL technologies. Demonstrated success in delivering complex technical projects within a financial or investment setting. Experience with cloud platforms More ❯

Senior Software Engineer/Architect C#, Azure, DevOps, ElasticSearch, Kubernetes Hybrid - 2 days per week on-site in Southampton Salary: £65,000 - £75,000 + bonus Are you an experienced Senior Software Engineer looking for your next big challenge? Join a global tech leader where innovation, high performance, and career growth are at the … heart of everything they do. This is your chance to make a real impact as a Senior Software Engineer/Architect , working on mission-critical systems in a cutting-edge environment. You will be responsible for: Owning the architecture, and carrying out design, implementation and developer-level test, of UI, server, and interface components, using C#, in 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 … + 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 … 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 … + 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 … 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 ❯

At a Glance Capsa is an AI platform that accelerates due diligence and deepens insights for Private Equity funds. We are hiring senior software engineers who are comfortable contributing across all layers of the application and developing features end to end. Details: Role : Senior Software Engineer - Full Stack Location : London, UK (Hybrid, In-Person … defense companies like QinetiQ and retail tech startups such as Standard AI. The entire team consists of early-stage startup veterans passionate about building exceptional products. The Role A senior software engineer at Capsa is expected to own projects and features from conception to production, working across the stack to deliver improvements to our AI platform. Key … vision and will have a direct impact on its success. Have the opportunity for fast career growth. Enjoy yourself! Apply if: You have 4+ years of experience as a software engineer in a venture backed startup or top tech firm. You have taken entire products or features from ideation to production and you've measured their impact. You More ❯

At a Glance Capsa is an AI platform that accelerates due diligence and deepens insights for Private Equity funds. We are hiring senior software engineers who are comfortable contributing across all layers of the application and developing features end to end. Details: Role : Senior Software Engineer - Full Stack Location : London, UK (Hybrid, In-Person … defense companies like QinetiQ and retail tech startups such as Standard AI. The entire team consists of early-stage startup veterans passionate about building exceptional products. The Role A senior software engineer at Capsa is expected to own projects and features from conception to production, working across the stack to deliver improvements to our AI platform. Key … vision and will have a direct impact on its success. Have the opportunity for fast career growth. Enjoy yourself! Apply if: You have 4+ years of experience as a software engineer in a venture backed startup or top tech firm. You have taken entire products or features from ideation to production and you've measured their impact. You More ❯

At a Glance Capsa is an AI platform that accelerates due diligence and deepens insights for Private Equity funds. We are hiring senior software engineers who are comfortable contributing across all layers of the application and developing features end to end. Details: Role : Senior Software Engineer - Full Stack Location : London, UK (Hybrid, In-Person … defense companies like QinetiQ and retail tech startups such as Standard AI. The entire team consists of early-stage startup veterans passionate about building exceptional products. The Role A senior software engineer at Capsa is expected to own projects and features from conception to production, working across the stack to deliver improvements to our AI platform. Key … vision and will have a direct impact on its success. Have the opportunity for fast career growth. Enjoy yourself! Apply if: You have 4+ years of experience as a software engineer in a venture backed startup or top tech firm. You have taken entire products or features from ideation to production and you've measured their impact. You More ❯

Senior Software Engineer (Python) Hybrid London (1-3 days per week) Up to £80,000 + Benefits Are you a passionate Python engineer who thrives on building scalable, high-quality software? We're working with a multi-award-winning digital agency , recognised as one of the Sunday Times Best Places to Work , that's looking … for a Senior Software Engineer (Python) to help shape the next generation of their data-driven tools and products. Why this role? Work at the intersection of data, automation, and AI , delivering tools that drive measurable impact for global brands. Join a collaborative, innovative engineering culture where learning, experimentation, and technical excellence are at the core. Hybrid … technical bar across the team. Staying hands-on while contributing to the architectural direction and long-term roadmap. What we're looking for: 5+ years of experience as a Software Engineer, ideally in Python (3.10+). Proven experience developing cloud-native applications (GCP or AWS). Strong understanding of CI/CD pipelines (e.g. GitHub Actions) and containerisation More ❯