1 to 25 of 886 Senior Software Engineer Jobs

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 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 ❯

Senior Software Engineer - Remote UK - £85000 What is in it for you? As a talented Senior Software Engineer you can expect: A supportive and adaptive culture Access to a structured training and career progression plan Opportunities to take the lead on critical projects and enhance your career Great salary - Up to £85,000 base … and Package (neg for the right person) We are helping an innovative technology business scale their Software team in in the UK. Their software powers some of the worlds leading consumer brands across the digital commerce and retail experience software space. Due to continued growth and demand for their products they now urgently need a Senior Software Engineer to join their team. Your role will be to focus mainly on backend engineering within their AI product suite. This role would suit a Senior Software Engineer who has a background in AI engineering or a deep passion for AI. This role is Remote within the UK - the team do meet in More ❯

Senior Software Engineer - Remote UK - £85000 What is in it for you? As a talented Senior Software Engineer you can expect: A supportive and adaptive culture Access to a structured training and career progression plan Opportunities to take the lead on critical projects and enhance your career Great salary - Up to £85,000 base … and Package (neg for the right person) We are helping an innovative technology business scale their Software team in in the UK. Their software powers some of the worlds leading consumer brands across the digital commerce and retail experience software space. Due to continued growth and demand for their products they now urgently need a Senior Software Engineer to join their team. Your role will be to focus mainly on backend engineering within their AI product suite. This role would suit a Senior Software Engineer who has a background in AI engineering or a deep passion for AI. This role is Remote within the UK - the team do meet in More ❯

Senior Software Engineer Node.js/AWS/React London (Hybrid, 3 days onsite) Are you the kind of Senior Software Engineer who enjoys taking something fast-and-scrappy and turning it into something scalable, elegant, and genuinely robust? This is a chance for a Senior Software Engineer to join a small … based in the London City Centre thats building products to make sense of massive data streams. Youll be part of a tight-knit team (around ten people total, five software engineers), working on a genuinely greenfield platform with a modern stack and zero legacy The focus now is on maturing the codebase re-architecting, refactoring, testing, and scaling. As … a Senior Software Engineer, youll play a key role in helping the team evolve from early-stage speed to long-term stability, with the freedom to influence both product direction and engineering quality What youll be doing: Building and scaling a Node.js application that sits at the core of the product Designing and implementing new features for More ❯

Senior Software Engineer – Node.js/Backend Development – London (Hybrid, 3 days onsite) Are you the kind of Senior Software Engineer who enjoys taking something fast-and-scrappy and turning it into something scalable, elegant, and genuinely robust? This is a chance for a Senior Software Engineer to join a small, but … the London City Centre that’s building products to make sense of massive data streams. You’ll be part of a tight-knit team (around ten people total, five software engineers), working on a genuinely greenfield platform with a modern stack and zero legacy The focus now is on maturing the codebase - re-architecting, refactoring, testing, and scaling. As … a Senior Software Engineer, you’ll play a key role in helping the team evolve from early-stage speed to long-term stability, with the freedom to influence both product direction and engineering quality What you’ll be doing: Building and scaling a Node.js application that sits at the core of the product Designing and implementing new More ❯

Senior Full Stack Software Engineer Tech : AWS, NodeJS, TypeScript, JavaScript, ReactJS, React Native Why? start-up financial services, 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 Full Stack Software Engineer - Responsibilities Design, develop, and maintain advanced applications. Collaborate with cross-functional teams to define, design, and ship new features. Guiding and develop the skills of junior … quality and speed. 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 Full Stack Software Engineer - Experience Required Proven experience as a Senior Full Stack Developer or similar role with a strong portfolio of projects. Expertise in Node.js More ❯

Contract role : Senior Software Engineer : Up to £475 per day Outside IR35 : 9 months rolling : Hybrid Monthly (London) An innovative digital consultancy is looking for experienced Senior Software Engineers to design and architect scalable, high-performance systems for a cutting-edge platform being developed for a major client. In this role, you’ll tackle complex … technical challenges as part of an agile team following Scrum methodologies. As a Senior Software Engineer, you’ll set the standard for code quality and best practices, actively contributing to code reviews and collaborative programming sessions with your team. As a Senior Software Engineer, you will be experienced with: C#, .Netcore JavaScript, React.js AWS … Key information: Up to £475 per day Outside IR35 9 months rolling Hybrid Monthly (London) This is an exciting opportunity for a Senior Software Engineer to join a high-performing development team. Contract role : Senior Software Engineer: Up to £475 per day Outside IR35 : 9 months rolling : Hybrid Monthly (London) *Unfortunately, due to the More ❯

Contract role : Senior Software Engineer : Up to £475 per day Outside IR35 : 9 months rolling : Hybrid Monthly (London) An innovative digital consultancy is looking for experienced Senior Software Engineers to design and architect scalable, high-performance systems for a cutting-edge platform being developed for a major client. In this role, you’ll tackle complex … technical challenges as part of an agile team following Scrum methodologies. As a Senior Software Engineer, you’ll set the standard for code quality and best practices, actively contributing to code reviews and collaborative programming sessions with your team. As a Senior Software Engineer, you will be experienced with: C#, .Netcore JavaScript, React.js AWS … Key information: Up to £475 per day Outside IR35 9 months rolling Hybrid Monthly (London) This is an exciting opportunity for a Senior Software Engineer to join a high-performing development team. Contract role : Senior Software Engineer: Up to £475 per day Outside IR35 : 9 months rolling : Hybrid Monthly (London) *Unfortunately, due to the More ❯

Senior Software Engineer | Blending Music, Science and Technology 💻 Senior Software Engineer 🎶 Incubated Startup - Combining Music, Science and Tech 💰 Up to £110,000 p/a + Equity ⚙️ Stack: Typescript, React, Node/Nest, AWS - FE Leaning (Rust in the stack) We're partnered with a groundbreaking company using advanced technologies and musical expertise to … largest music for media companies behind best known TV and Film soundtracks, they are looking to transform personalised musical experience for mindfulness and wellness. We are looking for a Senior Software Engineer, proficient in Typescript & React with some Node + AWS experience to join a founding team of customer-centric, cross functional engineers. If you are a … Senior Software Engineer looking to join a growing company looking to use music, science and technology to transform wellbeing, this one is for you. Interested? Apply within or reach out to James for more information. Senior Software Engineer | Blending Music, Science and Technology More ❯

Senior Software Engineer | Blending Music, Science and Technology 💻 Senior Software Engineer 🎶 Incubated Startup - Combining Music, Science and Tech 💰 Up to £110,000 p/a + Equity ⚙️ Stack: Typescript, React, Node/Nest, AWS - FE Leaning (Rust in the stack) We're partnered with a groundbreaking company using advanced technologies and musical expertise to … largest music for media companies behind best known TV and Film soundtracks, they are looking to transform personalised musical experience for mindfulness and wellness. We are looking for a Senior Software Engineer, proficient in Typescript & React with some Node + AWS experience to join a founding team of customer-centric, cross functional engineers. If you are a … Senior Software Engineer looking to join a growing company looking to use music, science and technology to transform wellbeing, this one is for you. Interested? Apply within or reach out to James for more information. Senior Software Engineer | Blending Music, Science and Technology More ❯

Senior Software Engineer (TypeScript, Node, AWS) Salary: Up to £110k plus equity Location: 3 days p/week in London Senior Software Engineer (TypeScript, Node, AWS) - would you like the opportunity to work for a start-up within the energy space? This is an exciting opportunity for a Senior Software Engineer … to join an organisation, where you will work directly with their highly experienced Head of Engineering. This opportunity is suitable for someone with a product focused mindset. As a Senior Software Engineer, you will take ownership of designing, building, and maintaining cutting-edge solutions. You will also play a crucial role ensuring accuracy, scalability, and reliability. Requirements … At least 5+ years of Node experience Proven track record of architecting complex and scalable solutions AWS If you're an experienced Senior Software Engineer (TypeScript, Node, AWS) looking for their next challenge, please apply. More ❯

Senior Software Engineer (TypeScript, Node, AWS) Salary: Up to £110k plus equity Location: 3 days p/week in London Senior Software Engineer (TypeScript, Node, AWS) - would you like the opportunity to work for a start-up within the energy space? This is an exciting opportunity for a Senior Software Engineer … to join an organisation, where you will work directly with their highly experienced Head of Engineering. This opportunity is suitable for someone with a product focused mindset. As a Senior Software Engineer, you will take ownership of designing, building, and maintaining cutting-edge solutions. You will also play a crucial role ensuring accuracy, scalability, and reliability. Requirements … At least 5+ years of Node experience Proven track record of architecting complex and scalable solutions AWS If you're an experienced Senior Software Engineer (TypeScript, Node, AWS) looking for their next challenge, please apply. 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 Salary: £65,000 - £75,000 C#, .NET, Windows Desktop We’re representing a scaling SaaS business are hiring a Senior Software Enginee r to strengthen their product development team. You’ll be hands-on with C# and .NET , crafting high-performing Windows applications used across global markets. This isn’t just coding. … you’ll help shape technical decisions, refine UI/UX, and integrate closely with Windows OS components to deliver polished, reliable products. What You’ll Do as a Senior Software Engineer: Build and refine Windows desktop applications (WinForms, WPF, WinUI or similar) Develop sleek, functional user interfaces and custom controls Apply best practice design patterns (e.g. MVVM … MVC) Connect applications with OS-level features and external systems Ensure stability, performance, and maintainability of the codebase What You’ll Bring as a Senior Software Engineer: Solid background in C#/.NET desktop development Experience delivering advanced Windows client software Strong knowledge of Windows APIs and event-driven programming Familiarity with CI/CD and More ❯

Senior Software Engineer page is loaded Senior Software Engineerlocations: UK - London (20 Fenchurch)time type: Full timeposted on: Posted Todayjob requisition id: 2025-811 Job Title: Senior Software Engineer (Python) Reporting to: Lead Software Engineer Direct Reports: N/A Position Type: PermanentStanding still is not an option in the … solutions which delight underwritersAbout the OpportunityThe London Market Underwriting & Reinsurance Performance team consists of Actuaries, Reinsurance Specialists and Engineers reporting into the Chief Underwriting Officer (London Market).As a Senior Software Engineer with experience of Agile and DevOps working within the Underwriting Performance Innovation team, you will research, design, test, develop and support software solutions to … an Actuarial Model Management platform, working closely with the central Innovation & Analytics function to define our developing Data Platform and identify opportunities to demonstrate its value.Core Responsibilities Collaborate with software engineers, data engineers, and underwriters to define and deliver the future of Property & Casualty underwriting at TMHCC International Continually improve ways of working, responding to change and maintaining focus More ❯

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 of their Back End development in your role as a Senior Software Engineer. To deliver great solutions, we are More ❯

Senior Software Engineer I page is loaded Senior Software Engineer I Apply locations London time type Full time posted on Posted Yesterday job requisition id R7649 Company Description We're - you might not know our name, but companies like eBay, ASOS, Klarna, Uber Eats, and Sony do. That moment when you check out online … and our partners. And we need your help. Join us to build the digital economy of tomorrow. Job Description Global payments are complex and ever-evolving. At Checkout our software engineers develop the next-generation payments technologies that enable our Merchants to boost their acceptance rates, cut processing costs, fight fraud, and create cutting edge technology that enables extraordinary … customer experiences. We're looking for Senior Software engineers who bring fresh ideas, have a curious nature and are passionate about working in an Engineering environment which focuses on building products to achieve the company's strategic goals. You'll get to work with teams from across 's portfolio of products and services who all have a real More ❯

Senior Software Engineer/Developer (C# .Net) London onsite to £150k Are you an experienced C#, backend focussed Software Engineer? You could be progressing your career in a senior, hands-on role at a global Asset Manager with c$3 million under management. As a Senior Software Engineer within the trading … You are collaborative with excellent communication and stakeholder management skills You are degree educated in Computer Science or similar technical discipline What's in it for you: As a Senior Software Engineer/Developer you will receive a competitive package: Salary to £150k Bonus paid every six months based on personal performance (10-25%) Professional development Pension … Health Insurance Gym membership Social events, free fruit, snacks, coffee etc. Apply now to find out more about this Senior Software Engineer/Developer (C# .Net) opportunity. At Client Server we believe in a diverse workplace that allows people to play to their strengths and continually learn. We're an equal opportunities employer whose people come from More ❯

Senior Software Engineer/Developer (C# .Net) London onsite to £150k Are you an experienced C#, backend focussed Software Engineer? You could be progressing your career in a senior, hands-on role at a global Asset Manager with c$3 million under management. As a Senior Software Engineer within the trading … You are collaborative with excellent communication and stakeholder management skills You are degree educated in Computer Science or similar technical discipline What's in it for you: As a Senior Software Engineer/Developer you will receive a competitive package: Salary to £150k Bonus paid every six months based on personal performance (10-25%) Professional development Pension … Health Insurance Gym membership Social events, free fruit, snacks, coffee etc. Apply now to find out more about this Senior Software Engineer/Developer (C# .Net) opportunity. At Client Server we believe in a diverse workplace that allows people to play to their strengths and continually learn. We're an equal opportunities employer whose people come from More ❯

Role: Senior Software Engineer (C++ Specialist) Salary: TBC Location: Nottingham, UK Are you an experienced Senior Software Engineer looking for a new challenge? We are seeking a talented and motivated professional to join a forward-thinking, globally recognised organisation at the forefront of innovation in industrial technology. This is a fantastic opportunity to contribute … enhancing efficiency, ensuring compliance, and reducing waste across various industries. With a commitment to quality and continuous improvement, they offer a market-leading portfolio of marking and coding systems, software, and services. The Role As a Senior Software Engineer and C++ expert, you will play a key role in designing, implementing, validating, and maintaining embedded software … collaborating with engineers and stakeholders to deliver high-quality solutions that meet business and customer requirements. Key Responsibilities: Lead and contribute to the design, coding, and validation of embedded software solutions. Drive software quality and efficiency by implementing best practices in design and development. Develop and improve tools, frameworks, and methodologies to enhance software reliability. Work closely More ❯

Senior Software Engineer (Fullstack Node.js, React, C#) Birmingham, West Midlands Hybrid (2 days onsite per week) Salary: to 60k + Excellent Benefits We are working with a leading software house specialising in enterprise solutions that is seeking a talented Senior Software Engineer to join their Birmingham-based team. This hybrid role offers the … perfect balance between flexibility and collaboration, with 1-2 days a week spent onsite. As a Senior Software Engineer, youll play a key role in the design, development, and delivery of scalable, high-performance software solutions. Youll work across the full stack, focusing on Node.js and React, while collaborating closely with other developers, architects, and stakeholders … to deliver robust applications that meet enterprise-level demands. Key Responsibilities Design, develop, test, and deploy high-quality software solutions. Work across the full stack with Node.js, React , and C#. Build and maintain RESTful APIs for large-scale enterprise systems. Collaborate effectively with stakeholders to define technical requirements and priorities. Implement and maintain automated testing to ensure reliability and More ❯