1 to 25 of 30 Remote Senior Software Engineer Jobs in Watford

Are you keen to help in the transition towards sustainable lifestyles with clean technologies? Senior Software Engineer 🚩 Fully Remote in the UK 💰 £90,000 - £120,000 I am partnered with a Scale-Up Energy SAAS provider who are looking for a Senior Software Engineer … engineering strategy of the company. Their highly scalable, low latency platform is built on Java, AWS, Docker and Kubernetes. You will be an ideal Senior Software Engineer if you have: PhD educated background, ideally in Computer Science or Maths, Engineering Deep understand of Computer Science fundamentals and … your approach As a company they are massively scaling up their development function this year and you'll have a fantastic opportunity as a Senior Software Engineer to have a huge influence on the companies engineering strategy. If you have a PhD in Computer Science with a More ❯

global challenges including climate change, biodiversity and sustainable development. We are a Google Premier Partner and we specialise in designing and building high performing software solutions including both customer specific solutions (business to business model) as well as our own Software as a Service products. The Opportunity We … are looking for a full-time Senior-level Software Engineer to join the NGIS EU in team in Canada, UK or Italy to help with the development and delivery of our TraceMark Software as a Service products. The TraceMark Sustainable Solution factory includes products for: Sustainable … https://tracemark.com/eudr) Sustainable Cities (https://tracemark.com/flow) Sustainable Fashion (https://materialsimpactexplorer.com/). As a Senior Software Engineer, you will be responsible for building full-stack web, desktop and mobile applications based on customer requirements. You will primarily More ❯

About the job Job Title: Senior Software Engineer Team: Graphics Location: SI HQ, Here East, London/Remote Reporting to: Lead Software Engineer (Graphics) We are Sports Interactive 🎮 The gaming studio behind: ⚽ Football Manager. Founded in 1994, Sports Interactive (‘SI’) became a wholly owned subsidiary … improving the visual quality and performance of Football Manager is one of our main goals, and we are looking for an experienced, passionate graphics software engineer to join our team. In this role you will collaborate with peers in the Graphics Team as well as work closely with … scalable, high-quality rendering solutions. Knowledge, Skills, and Experience Essential: Extensive professional experience using C# as the main language. Significant experience as a graphics software engineer, having shipped at least one game using Unity on multiple platforms. Strong knowledge of Unity URP, including customization via Render Graph and More ❯

Senior Software Engineer – Python | AWS | Cloud-Native Systems Are you a Python expert who thrives on solving complex backend problems at scale? Do you want to help shape the architecture of cloud-first systems in a high-performance environment? My client is seeking a Senior Software Engineer to join their growing engineering team. This role will focus on building and maintaining robust, scalable services and applications within a Python-based ecosystem deployed on AWS. Key Responsibilities: Design, build and maintain cloud-native backend services using Python Work within an AWS-hosted infrastructure, leveraging services … term technical strategy Champion best practices for code quality, testing, and performance Mentor junior developers and participate in code reviews Requirements: 5+ years of software engineering experience, with significant hands-on expertise in Python Proven experience building and maintaining systems on Amazon Web Services (AWS) Strong grasp of REST More ❯

Senior Software Engineer - AI, Next.js Fully Remote - Remote UK Salaries paying £85k-£110k + Equity Our client is a forward-thinking AI start-up dedicated to building innovative software solutions powered by cutting-edge AI technologies. Their mission is to revolutionise the B2B software landscape … by integrating advanced Large Language Models (LLMs) into seamless, user-centric experiences. They are looking for talented Software Engineers to join their dynamic team and be part of the AI-driven transformation in the tech industry. About the Role As a Senior Software Engineer, you will … be an integral part of their product team, working within a unified codebase that powers their B2B software and custom AI modules. Your role will encompass the entire feature lifecycle, from initial design and data structuring to advanced AI integration, ensuring robust, scalable, and high-performance solutions. Key Responsibilities More ❯

Role: Senior Software Engineer Location: Remote Day Rate: £600.00 - £700.00 (Outside IR35) Contract Duration: 6 Months We are currently recruiting for a Senior Software Engineer for a client in the e-commerce space, you will be responsible for the tech behind everything from scheduling … and CI/CD workflows Improve system documentation and knowledge sharing Ensure secure and reliable data handling (GDPR-compliant) Key Skills: 5+ years in software engineering, ideally with PHP and MySQL/MariaDB Strong AWS experience (EC2, RDS, S3) Comfortable working with legacy and bespoke systems Skilled in security More ❯

Job Title: Senior Software Engineer Salary: £40,000–£75,000 depending on experience Location: Hertfordshire (Relocation package may be available) Dynamic (hybrid) working: Typically 3–5 days per week on-site, depending on project requirements What We Offer: Company bonus: Up to £2,500 (based on annual … neonatal leave, and fertility-related treatments Facilities: Excellent site facilities including subsidised meals, free car parking, and more The Opportunity: We’re seeking a Senior Software Engineer to join our dynamic and multidisciplinary team working at the forefront of cutting-edge technology. This role is part of … a cross-functional collaboration across Electronic Engineering, Test Centres, and Software Development to deliver critical test capabilities. You will play a vital role in enabling robust and timely testing of advanced systems, directly supporting certification, manufacturing, and operational validation activities. You’ll be responsible for developing and supporting software More ❯

Title : Senior Software Engineer Company : HPC R&D Location : London (very flexible hybrid) Pay : Up to £170,000 + bonus + benefits Company : An advanced HPC R&D firm, looking to expand the UK compiler team. Most of the team are ex-Big-Tech, ex-FAANG or … technical leadership. If you want to work alongside some of the brightest, most enthusiastic people in the industry, this may be worth exploring. Role : Senior Software Engineer position with an emphasis on AI Compiler development in the context of AI. You will be working with Triton, but … edge compiler development project. Significant hires have already been made in the team to support this role. About you: 6 years+ as a compiler engineer Strong C++ programming skills Experience with Triton, LLVM, MLIR or other compilers Experience with GPU architectures Full details are available. Please don't hesitate More ❯

Senior Software Engineers + Software Engineer] [Python/AWS] [Fully Remote from within Northern Ireland/ROI] The way software is built is constantly evolving. This platform makes it easy for companies—especially big enterprises with hundreds of teams and thousands of developers—to securely … update and share software, using the cloud. You'll get to help developers, security, platform engineers, to work smarter and safer. This is by developers, for developers. They've just raised Series B and you'll have direct impact on further success. Every team member has experienced significant personal … are open across different squads : Platform - SSE [Responsible for lots of core platform] Webapp - SSE [API Heavy/3rd Party Integrations] Artifact mgmt SaaS - Software Engineer [Core product/Python+Django) It's a Python house with everything hosted on AWS, so you will need to come strong in More ❯

Senior Software Developer Location: Bristol (Hybrid – 2/3 Days Onsite) Job Type: Permanent Clearance Requirement: SC Eligible The Opportunity We’re working with a leading defence organisation on a key hire for a Senior Software Developer to join their embedded systems team. This is a … hands-on, high-impact role developing real-time software for next-generation systems where performance and reliability are critical. Whether leading delivery or solving complex low-level challenges in C/C++ or Ada, you'll be at the core of safety-critical defence technologies—offering both deep technical … engagement and long-term career growth. What You’ll Do • Lead or support the design, development, and integration of embedded software for advanced real-time platforms • Collaborate with systems, hardware, and safety teams to deliver certified software solutions that meet strict performance and security standards • Engage directly with More ❯

Senior Software Engineer – AI-Enabled Projects | Remote (UK) | £70,000–£90,000 Want to future-proof your career while shaping the next era of software delivery? Are you a seasoned software engineer who thrives on building clean, modern solutions to replace outdated systems? Do … for growing UK and international businesses, replacing outdated architectures with modern, scalable solutions. What You’ll Be Doing: Working end-to-end on greenfield software projects that replace legacy systems or building end-to-end solutions for startups. Taking the lead on architecture, development, deployment, and testing - no hand … value. Flat structure, high trust: Small teams, high autonomy, zero micromanagement. Future-focused: You’ll be at the forefront of a new model for software delivery, combining engineering best practices with cutting-edge AI capabilities. Ready to lead the charge in AI-enabled software engineering? Apply now and More ❯

Senior Software Engineer Fully Remote, excellent package and incredible opportunity We're looking for a Senior Software Engineer to join a fast-moving team building tools used by thousands of real-world users. You'll collaborate closely with Product, Design, and Customer Success to … and engage directly with customers to make sure what you're building actually works for them. What You’ll Be Doing Writing production-grade software in Ruby on Rails and React Native Leading on technical and architectural decisions across the stack Collaborating cross-functionally with Product, Design, and Customer More ❯

Job Description Job Title: Senior Software Engineer Salary: £40,000–£75,000 depending on experience Location: Hertfordshire (Relocation package may be available) Dynamic (hybrid) working: Typically 3–5 days per week on-site, depending on project requirements What We Offer: Company bonus: Up to £2,500 (based … neonatal leave, and fertility-related treatments Facilities: Excellent site facilities including subsidised meals, free car parking, and more The Opportunity: We’re seeking a Senior Software Engineer to join our dynamic and multidisciplinary team working at the forefront of cutting-edge technology. This role is part of … a cross-functional collaboration across Electronic Engineering, Test Centres, and Software Development to deliver critical test capabilities. You will play a ... More ❯

with an extra emphasis on expansion of our capabilities and capacity in helping solve unique client challenges. Summary: Beazley Security is seeking an experienced Senior Software Engineer to design innovative, secure scalable solutions that support our cybersecurity mission. As a key member of our global team, you … role will play a critical part in the continued improvement, scalable development, and support of products used to deliver Beazley Security services. As a Senior Software Engineer, this role will provide technical guidance around architecture and development, as well as mentor members of the Engineering team. This … test, and deployment processes. Create Infrastructure-as-Code. Collaboration: Work closely with product managers, other engineers, and stakeholders to define and deliver high-quality software solutions. Balance: Ensure feature development speed and reliability with well-defined service-level objectives. Improve: Continually update the deployment process to ensure only robust More ❯

I am supporting a FinTech AI Product Company who are on the hunt for an experienced Senior Software Engineer to join their FULLY REMOTE engineering team! They are a heavily tech driven Product Company who put a huge emphasis on quality engineering, innovation and forward thinking. As … a Senior Software Engineer, you will work closely with their CTO and play a very important role on the direction of the product! You'll support with key tech decisions, architecture, project delivery and mentoring other Engineers in the team. Requirements: Deep experience with Python, TypeScript, React More ❯

Senior Software Engineer Tech Stack: C#, .NET, Microservices, Docker, Kubernetes, AWS/Azure United Kingdom Full Remote: Perm Role Salary: £85,000 - £110,000 Harrington Starr has partnered with an innovative start up FinTech who specialise in providing market access and data from their ultra low-latency … platform to financial service firms, leading exchanges and single dealers across digital assets, FIX and more. They are looking to hire a Senior C#, .NET Engineer with strong experience in start-up/scale up firms, able to take ownership of developing new applications, adding features to existing More ❯

provider of Network Security solutions specializing in automatic detection and mitigation, network visibility, analytics, and reporting tools. About the Role Are you a seasoned software engineer with a passion for designing and developing cloud-native Infrastructure-as-Code (IaC) solutions from the ground up? Our client is seeking … a talented and motivated Senior Software Engineer to lead the development of our next-generation observability platform. THIS IS NOT A DEVOPS ROLE. Responsibilities Collaborate within a dynamic software engineering team to architect and build a new cloud-native IaC platform. Develop software using technologies … or on-premises setups. Engage in the full development lifecycle: design, define work, document, debate, code, debug, and support features from inception. Qualifications A software developer experienced in designing and delivering complex IaC capabilities from scratch, not merely operating existing environments. A background in developing cloud-native systems software More ❯

I am exclusively supporting a FinTech Product Company who are currently hiring for 2 x Senior Software Engineers to join their remote engineering team. They are profitable and already have their product (which i can expand on) used by a number of enterprise clients. They are looking for … a confident, experienced & passionate Senior Software Engineer with a product mindset and a deep understanding of Software Engineering. As a business, they are heavily driven by quality engineering & innovation and try to do things in a product mindset based around their end users. The role is … + experience with another backend language (Ruby, C++. Elixir, Haskell, Go, Clojure or Scala) Private projects to showcase + deep interest/passion for software engineering is also a plus! They are also working heavily within AI and working with up to date AI technologies They are paying up More ❯

Senior Software Developer UK Remote £80,000 - £95,000 + Insurance + Pension An excellent opportunity awaits an experienced software developer with strong .NET and React skills to join a leading software company in a role offering strong technical variety, ongoing development opportunities, and involvement in … genuinely interesting projects. This company builds innovative software and data management systems that support critical decision-making in sectors such as environmental monitoring, infrastructure, and energy. In this role you'll join as a senior member of the development team, taking a hands-on role in the full … or interest in scientific, environmental, or infrastructure-related domains is a bonus. This is an excellent opportunity to join a collaborative and tech-focused software team in a senior position offering a mix of engineering depth, meaningful projects, and long-term growth. The Role: *Full-stack development using More ❯

Senior Software Engineer – Java - FinTech Remote First | London (UK) | Up to £120k + Benefits Are you a Java developer who thrives in a collaborative, test-driven environment? Do you believe in pair programming, continuous integration, and clean, maintainable code? If so, we’d love to hear from More ❯

About the Company We are delighted to be working with this cutting-edge technology company in their pursuit of a Senior Software Engineer with experience in C or C++ to join their team on a full time, permanent basis. The role offers an excellent benefits package including … be a British Citizen or Dual UK National (including British Citizenship). About the Role Key responsibilities will include: Developing and supporting in-house software packages Working on new products and cross-domain solutions Collaborate with key stakeholders to understand business requirements Writing clean, scalable code Troubleshoot issues that More ❯

We’re partnered with a globally recognised team behind a widely used open-source platform. They’re looking for a Senior Software Engineer with strong Ruby experience to lead on new feature development, performance improvements, and robust testing — all within a fully remote environment. You’ll be More ❯

Senior Fullstack Engineer | React, Node.js, Next.js, API | Tech for Good This is the chance to work for a unique organisation! Our client is a not-for-profit that reviews/certifies companies, governments and financial institutions for their environmental impact and awareness. They are the main global authority … the UK with an office in central London and has 700 staff globally (100 circa in the UK). My client is looking for Senior Full Stack Engineers who will play a key role in the ongoing development and innovation of their newly created platform. This role is fully … the world Paid sabbaticals Generous maternity & paternity benefits This is an urgent role and will go fast. If you are interested, please apply quickly!!! Senior Fullstack Engineer | React, Node.js, Next.js, API | Tech for Good More ❯

Senior Full Stack Engineer | Remote | React | Node | TypeScript | £95k + Equity La Fosse has partnered with a creator enablement platform that helps some of the world's most famous and talented creators maximise their commercial potential. As they move towards securing Series B funding, they are seeking Senior … with a quick 3-stage virtual interview. If you're interested in the position and feel you fit some of the requirements, apply now! Senior Full Stack Engineer | Remote | React | Node | TypeScript | £95k + Equity More ❯

Senior Full Stack Developer | Remote | > £65,000 Sponsorship is not currently provided for this role. Are you a confident Mid Level Developer looking for a step up into a Senior Role or an established Senior Full Stack Developer looking to join an innovative business on their path … team? We are working with a remote business with a family feel who have created award winning technology to date. Keen to bring a Senior Developer on board to drive the business in their next stage of product growth, and be a pivotal part of their tech team. Essential … be a great role for you. Drop me your CV and contact number to beya@sr2rec.co.uk to discuss further, or a call on 07378548899. Senior Full Stack Developer | Remote More ❯