1 to 25 of 93 Senior Software Engineer Jobs in London

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 … 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 ...

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 … 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. ...

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 ...

Senior Software Engineer with a solid Python, Node.js, Typescript and Terraform experience ideally gained in a product lead, scale up environment is sought by a high growth B2B generative AI scale up based in central London. Working at the bleeding edge of generative AI this Senior Software Engineer will play a key role in greenfield innovation utilising the latest technology to design and implement new solutions within the existing platform. This role would suit an Engineer with a solid product engineering and a real passion for generative AI solution development ...

Senior Software Engineer/Developer (C# .Net) *Newcastle onsite* to £130k+ Are you a Senior Software Engineer looking to escape the hustle and bustle of London and relocate to somewhere with stunning scenery and a better quality of life (there's also great restaurants … established Hedge Fund client as a partner, they're creating a finance technology hub bringing a wealth of talent and experience. As a Senior Software Engineer you will collaborate with a small, talented team to deliver the core trading platform within a Microsoft environment using the latest ...

Senior C++ Developer/Software Engineer - London Based in the City of London (2 days in the office)/6 months rolling/£750 per day (Inside IR35) A global leading fintech solutions company and member of the Fortune 500, seek an experienced Senior C++ Developer …/Software Engineer, to be responsible for preparing programming assignments, including the design, planning and supervision of the implementation of large-scale system projects. This will include: Reviews, analysing, and modifying programming systems including encoding, testing, debugging and installing for a large-scale Mainframe computer system. Essential Duties ...

Senior Software Engineer, .Net London Permanent To £95k bonus benefits Senior Software Engineer, .NET Remote/London to £95k bonus benefits .Net, Back End, Azure, microservices Senior .NET Software Engineer is required by fintech company who provides cutting-edge systems … overview of this job, and what is expected of candidates Make an application by clicking on the Apply button. We are seeking a skilled Senior Software Engineer with extensive .NET experience to become a member of their vibrant team and help them achieve their development goals. ...

Senior Software Engineer, .Net London Permanent To £95k + bonus + benefits Senior Software Engineer, .NET Remote/London to £95k + bonus + benefits .Net, Back End, Azure, microservices Senior .NET Software Engineer is required by fintech company who provides … cutting-edge systems to the Banking and Financial Services sector. We are seeking a skilled Senior Software Engineer with extensive .NET experience to become a member of their vibrant team and help them achieve their development goals. You will work on the planning, design, and management ...

Senior Software Engineer/Team Lead (Windows C/C++, C#) London to £115k FTC Are you a skilled C++ Software Engineer with technical/team leadership skills looking for a new opportunity? You could be progressing your career in a senior, hands … role at a global market data provider. As a Senior Software Engineer/Team Lead you will head-up an Agile team (5 engineers) focussed on building and maintaining Exchange Connectivity software systems that require real-time and low latency, maintaining data feeds and developing ...

Senior Software Engineer, .Net London Permanent To £95k + bonus + benefits Senior Software Engineer, .NET Remote/London to £95k + bonus + benefits .Net, Back End, Azure, microservices Senior .NET Software Engineer is required by fintech company who provides … cutting-edge systems to the Banking and Financial Services sector. We are seeking a skilled Senior Software Engineer with extensive .NET experience... ...

Software Engineer (Mid–Senior) Python Full Stack A fast-growing, technology-led consumer health & beauty scale-up is looking for a mid-level to senior Software Engineer to join its collaborative engineering team. The business builds and operates multiple direct-to-consumer brands, supported … opportunity to influence architecture, tooling, and engineering best practices as the platform continues to scale. This is a great opportunity for an engineer who enjoys ownership, autonomy, and seeing their work have real-world impact. What you’ll be doing as a Software Engineer Designing, building ...

Senior Software Engineer, .Net London Permanent To £95k + bonus + benefits Senior Software Engineer, .NET Remote/London to £95k + bonus + benefits .Net, Back End, Azure, microservices Senior .NET Software Engineer is required by fintech company who provides ...

exciting opportunity has arisen for a Senior Software Engineer to join a well-established biotech company using large-scale genetic data and AI to predict disease risk and advance precision healthcare. As a Senior Software Engineer , you will be contributing to the development … scaling of secure, reliable software in a collaborative, agile environment. This is a contract-based role (12 weeks) offering hybrid/remote working options, a salary range of £500 - £700 per day (Inside IR35) and benefits. You will be responsible for: Building and scaling new software products within ...

Senior Software Engineer Key Technologies: C#, .NET, React, JavaScript, Typescript, AWS, Docker City of London, United Kingdom Perm Role: £80,000 - £120,000 Harrington Starr has partnered with a Global Financial Services Vendor and they are looking for a Senior C#, .NET Software Engineer … work in the UK. This role offers hybrid working, with an office location based in the City of London. This role will suit a Senior Software Engineer, with expert C#, .NET experience having a direct impact from the get-go. ...

Senior Software Engineer - .NET Core, Blazor, SQL Server Location: Remote (UK-based) Salary: £50,000 - £60,000 (depending on experience) Benefits: Company pension scheme, 25 days holiday + bank holidays Applause IT are recruiting for a Senior Software Engineer on behalf of a highly … resources annually, powered by a bespoke tech platform that emphasises transparency, accountability, and data accuracy. As their operations grow, they're seeking an experienced Senior Software Engineer to help evolve and scale their platform. What you'll be doing: Developing and maintaining robust internal and external systems ...

Software Engineer (MidSenior) Python Full Stack A fast-growing, technology-led consumer health & beauty scale-up is looking for a mid-level to senior Software Engineer to join its collaborative engineering team. The business builds and operates multiple direct-to-consumer brands, supported … opportunity to influence architecture, tooling, and engineering best practices as the platform continues to scale. This is a great opportunity for an engineer who enjoys ownership, autonomy, and seeing their work have real-world impact. What youll be doing as a Software Engineer Designing, building, and deploying ...

Senior Software Engineer (Node.js) London – Hybrid flexible Up to £80,000 + equity We’re currently partnered with a real-time sports data platform that is revolutionising how companies leverage data to empower their business. They are looking for a performance focused Senior Engineer with … stage start-up and contribute to building a company that puts its internal teams and customers first. This is an exciting opportunity for a Senior Software Engineer to help shape the future of a transformative real-time data platform. If you’re passionate about building world-class ...

Role: Senior Software Engineer (with DevOps) Location: Remote (with occasional monthly collaboration days) Are you... A software Engineer with 5+ years experience, working with modern programming with one or more programming languages, Python and/or Golang, Java, Ruby, TypeScript etc? Experienced working on cloud … meet colleagues or even change if scenery when you like? About: Our client are a "Scale-Up" cloud solutions consultancy, helping customers to optimise Software & Cloud, covering DevOps, DevSecOps, Transformation, Strategy and more. Due to recent successes in the continued commercial strategy, we are now looking to grow ...

Senior Software Engineer The Opportunity On behalf of a global powerhouse in FinTech Infrastructure , we are seeking a Senior Software Engineer . Our client operates one of the largest financial networks, serving as the digital backbone for thousands of global financial institutions. This … senior-tier appointment for an engineer who excels at building resilient, high-concurrency systems and wants to lead the digitalization of global financial markets. The Technical Stack You will be working within a modern, engineering-first culture. The core stack includes: The Engine: Expert-level C# and .NET ...

Senior Embedded Software Engineer Salary : Up to £100,000 Location : London - 3 days a week We’re working with a rapidly growing tech for good company that is transforming how data, automation, and smart integrations shape the future of digital infrastructure. Their platform optimises real-time operations … connecting users with seamless, intelligent technology solutions. We are looking for a modern, innovative and driven Senior Embedded Software Engineer to join their growing team. They are looking for someone who has commercial experience working with C software development in an IoT, hardware or embedded solutions ...

Senior Software Engineer 📍 Location: Onsite, London, United Kingdom ⌛ Type: Full-time 💰 Compensation: Negotiable (Competitive salary + equity) About Ontik Ontik is an ambitious, early-stage B2B financial operations platform designed to streamline and simplify complex financial workflows for heavy duty industries. We’re scaling rapidly and looking … high-performance, ownership-driven environment, where you can make a direct impact on the product and help shape its future. Role overview As a Software Engineer (Full-Stack) at Ontik, you’ll play a pivotal role in building and scaling our financial operations platform. This is a hands ...

Senior Software Engineer Make sure to apply with all the requested information, as laid out in the job overview below. Location: Fareham Permanent – Full Time Hybrid/Flexi Working £60,000 - £75,000 Our client is seeking a Senior Software Engineer to develop advanced … modern AI‐driven techniques where appropriate. You’ll work closely with a multidisciplinary engineering team and take ownership of delivering reliable, mission‐critical software deployed on real autonomous platforms. Key Responsibilities Develop high‐level autonomous behaviours for unmanned vehicles. Design and optimise algorithms for path planning, obstacle avoidance ...

Senior Software Engineer Lead complex engineering work | Azure | .NET | Distributed Systems At GTreasury, we build software that sits at the heart of the CFO’s office. Our SaaS platform handles complex financial workflows at global scale - and we’re investing heavily in the next phase … growth. We’re hiring a Senior Software Engineer who enjoys solving hard problems, influencing technical direction, and mentoring others while staying close to the code. 💻 Core Tech Stack C#/ASP.NET Core Azure (cloud architecture & services) Microsoft SQL Server Modern JavaScript frameworks (Angular experience a plus ...

Senior Software Engineer (Robotics) 🤖 London (On-site, 5 days/week) Permanent role with excellent on-site benefits We’re looking for a Senior Software Engineer to help turn our advanced robotics stack into a dependable, real-world product. This is a hands … write production code, integrate subsystems, and work directly with robots in both simulation and hardware environments 🤖. You’ll build application-level software that connects control, navigation, perception, learning, and platform systems —ensuring they operate as a seamless, reliable whole. Expect cross-disciplinary collaboration, rapid iteration, and solving practical ...

Senior Software Engineer Location: London (Hybrid) Contract Duration: 6 months Join a specialized Applied AI team driving innovation in business operations. The group accelerates AI transformation by developing agentic systems and full-stack infrastructure to automate workflows and drive efficiency. We're seeking a Senior Software Engineer (L5) to deliver production-grade code while architecting autonomous AI workflows. This role combines technical expertise, product thinking, and scaling AI solutions across complex systems, working in a small agile team within a larger engineering organization. Key Responsibilities Design, develop, and deploy AI-powered systems that enhance ...