26 to 50 of 85 Senior Software Engineer Jobs in Slough

Senior Software Engineer (Contract) Team: Digital Workplace Experience Contract: 6–12 months IR35 Status: OUTSIDE At Nando’s , we’re not just about PERi-PERi chicken — we’re about people, purpose, and passion. We believe that technology should bring warmth, connection, and joy to every Nandoca (that’s what we call everyone who works here). Our … Team is on a mission to create beautifully simple, empowering digital tools that help our teams across restaurants and Central Support thrive every day. We’re looking for a Senior Software Engineer (React Native + Node.js) who shares our values and wants to make meaningful impact — creating tools that support real people, not just users. 🔥 What you More ❯

Senior Software Engineer (Python/AWS) 📍 Location: London or Manchester 💼 Employment Type: Full-time, Permanent About the Role We’re looking for a Senior Software Engineer with deep experience in Python and AWS to help design, build, and scale distributed, data-driven Ad-Tech systems. You’ll lead the delivery of cross-service features More ❯

Senior Software Engineer (Music Tech/AI) - TypeScript, NestJS, NextJS 📍Location: West London, 2-3 days a week on site 💸Salary: £90,000-110,000 📈 Incubated: A startup within a global music business ⚙️Required Skills: TypeScript, NextJS, Nextjs, GCP, ReactJS 👥 *High Societal Impact* Join a startup redefining music technologies' role within health and wellbeing.. We're partnered … s and work closely with their external clients. They're pragmatic, effective communicators and would like to bring someone in who has experience within startup environments. Requirements Experience building software end to end and across the stack with TypeScript Experience working with ReactJS or similar on the front end Motivated to work on ambiguous projects with relatively novel challenges … Senior Software Engineer (Music Tech/AI) - TypeScript, NestJS, NextJS, GCP More ❯

Software Engineer – Python/FastAPI/React/Functional programming/Typescript Location: London, UK (Hybrid) Type: Full-time Level: Mid to Senior Salary: £70,000 to £100,000 About the Role: This startup is building a cutting-edge platform to transform how engineers design physical products. Instead of creating one solution at a time, this system … is a spin-out from one of the UK’s most successful startups, built by top-tier engineers and developers from industry leading teams. We’re looking for a software engineer who enjoys writing clean, functional code and is genuinely passionate about real-world engineering not just building software, but helping change how things are designed and … Python for geometry, simulation, and data workflows Develop responsive, performant frontends using React and TypeScript Work closely with domain experts (engineers, designers) to translate complex physical problems into usable software features Follow functional programming practices to write testable, composable code Own features from idea to implementation to deployment Contribute to architectural decisions in a fast-moving, early-stage product More ❯

Senior Software Developer | £100,000 | London | Financial Services Overview: A leading financial services organisation is seeking a Senior Software Developer to drive the design, development, and delivery of critical technology solutions across its operations. This high-impact role sits at the heart of business transformation, focused on building scalable systems to support reporting, compliance, and operational … patterns, development standards, and quality controls Lead and mentor developers, managing performance and growth Contribute to technology strategy, promoting innovation and best practices Essential Skills & Experience: 8+ years in software development within financial services or other complex enterprise environments is a must have Skilled in C#, .NET Core, Angular (v17+), SQL Server, Azure, microservices, and Power BI Experience in … unit testing, test automation, and Agile delivery Knowledge of compliance, regulatory reporting, and enterprise operational processes Proven experience delivering complex software solutions Strong leadership and stakeholder management skills Bonus: Python, Azure Data Factory/Databricks, data analysis, and COTS platforms Package: £100,000 15% non-contributory pension Hybrid working (3 days per week) Performance-based bonus scheme Comprehensive benefits More ❯

Senior Software Engineer We’re hiring a Full-Stack Software Engineer specialising in full stack .Net Development for an emerging start up. It’s early days as this business builds it’s development team as it aims to transform how B2B businesses manage payments. The role is suited to someone that’s experienced but still More ❯

Senior C++ Software Engineer London Join a pioneering team developing advanced software for secure, high-performance communications. This is an opportunity to contribute to technology that supports public safety, defence, and government operations, working within an organisation that combines the innovation of a start-up with the stability of a globally established leader. You’ll play … QA, and Architecture. If you’re passionate about engineering excellence, security, and reliability, this is a genuinely impactful role. In this role, you’ll design, build, and maintain C++ software for mission-critical communication systems while integrating with third-party platforms such as Motorola DCS and CADI. You’ll collaborate closely with cross-functional teams to deliver scalable and … secure solutions that perform under pressure. Your work will also involve participating in architecture discussions, contributing to code reviews, implementing best practices, and ensuring the software meets performance, reliability, and security standards. You’ll have the freedom to innovate and the responsibility to deliver technology that has real-world impact. What's required for this Senior C++ Software More ❯

Staff Software Engineer | GO/Python | £600-£800/day | Outside IR35 Staff Software Engineer £600-£800/day Initial 6 Month Duration Outside IR35 Hybrid - Central London (3 days a week) Technical Environment - GO/Python, Kubernetes, Docker, Event-Driven, microservices architecture. We are partnered with a well-funded scale up in the BioTech sector … who are developing software to support autonomous robotics. They are building cutting edge, fully customisable, autonomous technology to support critical workflows, enhancing efficiency, reducing errors and reducing workload. You'll join a new squad tasked with building platform features that enable customers to develop and execute their scientific workflows. You'll work at the intersection of backend, cloud, and … high-throughput, real-time, core backend platform. You’ll be a hands-on contributor who can move fluidly across the stack while also influencing architectural design. Experience building scalable software in Go (Golang), Python, Kubernetes, Docker, Event-Driven, microservices architecture. Ability to contribute in areas such as DevOps (Kubernetes) Experience building event-driven backend systems Experience building real-time More ❯

Senior Software Engineer (C++) We are currently working with a world-leading Media Technology provider, who partners with global broadcasters worldwide. The Role This will be working in the team that develops the core applications responsible for converting, formatting, and rendering all media assets on their platform. Requirements Extensive experience designing and implementing high-performance C++ software at a senior level. Demonstrable expertise in Video and Audio processing, supported by industry-specific experience. Proven track record in multi-threading and performance optimisation techniques necessary to deliver low-latency solutions Mainly Remote - Occasional work in the London Office. Salary - TBC If you are interested, please apply or email me directly: cnisbett@trg-uk.com More ❯

Senior Django Developer | FinTech | Permanent | Hybrid | Central London Senior Software Engineer Start-up Fintech 2 days a week in the office (Central London) B2B FinTech in Central London are looking for a Senior Django Developer to help design, build, and scale their web applications. You’ll be part of a cross-functional product team responsible … for the full development lifecycle, from concept to deployment, building high-quality, performant software used by some of the world’s leading financial organisations. As a senior member of the engineering team, you’ll collaborate closely with product managers, front-end developers, and QA engineers, while mentoring others and driving best practices across the codebase. If you’re More ❯

Software Engineer – Next-Generation Derivatives Risk Platform 📍 Location: London (Hybrid – 1 day/week in office, flexibility for the right candidate) 💰 Day Rate: £850 per day 🧾 IR35: Outside 🗓️ Interview Process: Starts 12th November 2025 🚀 Start Date: 5th January 2026 CV's are not being reviewed until WC 3rd November We’re partnering with a global investment bank to … hire an exceptional Software Engineer to join a flagship team delivering a next-generation, high-performance derivatives risk platform . This is a mission-critical front-office role working on real-time distributed systems with exceptional technical standards. You’ll be part of a high-calibre team solving complex engineering challenges and shaping the future of risk technology … DevOps, CI/CD Emerging tech: WebAssembly, AI integration, and AI frameworks Systems: Cross-platform, distributed, scalable real-time environments This is a genuine technologist’s role — building critical software that combines engineering precision, scalability, and innovation. What We’re Looking For Very strong expertise in one of C#, Python or Java , ideally with working knowledge of another. Rust More ❯

Senior Backend Software Engineer – Node.JS About the Opportunity An innovative, fast-growing technology company is searching for a Senior Backend Software Engineer to join its core engineering team. This organisation is building next-generation automation and intelligence solutions, and you will play a key role in developing the backend systems that power a high More ❯

Senior Software Developer London – Twice a week in the office £70,000-£90,000 C#/Python/Azure I’m currently working for a well-established tech consultancy business of over 70 years who are based in Central London and looking for a Senior Software Developer , paying up to £90,000 and requiring office working More ❯

Senior Software Engineer (Python) | Institutional | London (Hybrid) | Up to £100k Albert Bow has partnered with a fast-growing global fintech platform transforming how institutional clients access digital assets. The team is building high-performance, low-latency trading systems at the forefront of financial services. The Role: Join a dedicated, high-performing engineering team to build and maintain … structures, and distributed systems Experience in trading systems or financial infrastructure is a plus, but blockchain/crypto experience is not required Passion for building high-quality, well-tested software Why This Role Rocks: Hybrid London-based role with flexible remote days Opportunity to work on cutting-edge institutional financial systems Budgets for learning & professional development, unlimited vacation, Apple More ❯

Senior C++ Software Developer, Python – Financial/Banking Candidates will have 5+ years C++ experience (ideally more) and excellent knowledge of Python – ideally coming from a Financial/Banking background with knowledge of Equities, Futures & Options and Fixed Income and Exchange Connectivity with some Low Latency experience. Job Overview You will work with the Product, Infrastructure and QA … teams, to produce high performance, low latency and highly reliable code. Your goal will be to develop software which handle large amount of TPS to drive a highly efficient technology used by several markets around the world. To be successful in this role as a Senior Software Engineer C++, you will be a proponent of agile … methodology and modern software best practices. You can produce detailed technical work in OOP and work with other members of the Development team to produce code of high-quality standards. Ideally, you should have worked in critical systems development in the past. Responsibilities and Duties • Codes, tests, integrates, and documents software. • Provides technical leadership to more junior employees and More ❯

We are looking for a Senior Software Engineer with strong expertise in .NET and AWS to join our client Key Responsibilities Design, develop, and maintain scalable, high-performance software solutions. Develop and manage Infrastructure as Code (IaC) using AWS CDK (Python) to automate deployment and cloud resource management. Drive code quality through automated testing , unit testing … applications and infrastructure. Participate in agile ceremonies and promote a continuous improvement mindset within the team. Maintain comprehensive documentation of systems, processes, and configurations. Experience & Competencies Experience as a Senior .NET Engineer , ideally within financial services or a similarly complex domain. Strong hands-on experience with AWS and Infrastructure as Code , particularly AWS CDK in Python . Familiarity More ❯

Senior Java Developer- London/Hybrid- up to £95k Our client an innovative and light footed fintech startup/scaleup brand are on a mission to revolutionise the credit and lending space. The brand who have now been running for the last 10 years and backed by VC investment are looking to hire a Senior Engineer to … Vaadin or JSF, Wicket, Spring MVC Spring Boot AWS Microservices ML/Big Data- desirable Docker- desirable messaging- GRPC/Solis- desirable Responsibilities: Design and development of low latency software components Contribute across the entire SDLC write and enhance well structured, testable, scalable and efficient code setup and maintain development process tools Collaborate in agile development process meetings, stand … of Vaadin brand new lender platform and payment systems for their customers Building a white label solution or managed service offering Cultural fit: Super collaborative process light and the Senior Engineers are able to introduce ideas and have autonomy to drive change looking for self starters, pragmatic engineers that will be accustomed to working in a start up/ More ❯

Senior Software Engineer – FinTech Startup | London | Onsite A high-growth FinTech startup is on a mission to simplify complex financial operations for some of the world’s most demanding industries. They’re building a powerful platform that helps businesses streamline workflows, automate financial processes, and make smarter, data-driven decisions — and they’re now looking for exceptional … and design teams Owning projects end-to-end, from concept to delivery Contributing to architectural decisions and technical direction You’ll bring: 5+ years of experience building and shipping software Strong fundamentals in software design, APIs, and databases Familiarity with cloud platforms (AWS, GCP, or Azure) An agile mindset and a genuine interest in building great products Experience More ❯

standard systems for machine learning and generative AI. You will have the opportunity to work in multidisciplinary teams of quantum scientists’, engineers, and mathematicians who are developing hardware and software within quantum- classical systems. We are looking for a highly skilled and passionate Senior Software Engineer to join the Product Development Team to drive the development … of software bridging the gap between cutting-edge quantum computing hardware and data centre infrastructure. You will be partnering closely with hardware engineers and physicists to design and implement cutting edge solutions for scalable, low latency systems that enable real-time quantum-classical integrations. If you are an expert in low level programming, hardware software integration and high … performance systems to develop solutions at the intersections of quantum control systems, classical compute orchestrations, and high-throughput data pipelines. Key Responsibilities Design, develop, and optimize software in C++ and/or Rust for quantum control systems. Develop low-latency interfaces between quantum hardware and classical compute. Collaborate with hardware teams to integrate software with FPGAs and high More ❯

Principal Software Engineer (Backend Focused) | ~£150K | AI Learning Platform | London Hybrid Partnered with one of the UK’s fastest-growing AI learning platforms, founded by Cambridge alumni from Google, Amazon, and YouTube, whose mission is simple: to make learning so easy, anyone can learn anything. They’ve built a generative AI platform that converts content into quizzes, flashcards … and gamified challenges and with 1M+ monthly users and $16M Series A funding , they’re scaling globally. We’re hiring a Principal Software Engineer (backend-focused) to help build and scale the systems powering millions of learners. You’ll own backend architecture, work with AI features, and ship production-grade code that directly impacts the product experience. 💡 Why More ❯

Job Role: Senior Software Engineer, Frontend Job Type: Full Time, Permanent Location: London, Hybrid (3 office days a week) Role purpose As a valued member of our engineering team, you will contribute to the development of our new web application, powered by a Headless CMS, using the latest frontend technologies. Working with a modern Next.js TypeScript stack … Exposure to backend or full-stack development (Node.js, Express, etc.) Developing white-label applications Building internationalised applications Familiarity with frontend observability best practices (we use Datadog) Experience in agile software development methodologies Why Travelex? To remain the world’s leading foreign exchange specialist, we are focused on making our customers’ lives simpler, more engaging and hassle free while they More ❯

data science, algorithmic precision, and intuitive design, we develop cutting-edge tools that enable users to analyze, interpret, and act on market dynamics with confidence. Your role As a Senior Software Engineer in the Product Engineering team you will build and evolve a data and content dissemination platform (Web, App, APIs, messaging) and corresponding data pipelines, ensuring … direct contact with business and technical stakeholders Work with product management to analyze and improve our business processes Conduct workload and complexity assessments Design, plan and implement new efficient software solutions in Python and Go Maintain and enhance our Airflow data pipelines Improve observability and scalability to support our constantly growing client base Continuously adapt to changing requirements in … Build and extend knowledge of financial instruments Minimum qualifications B.Sc. in Computer Science or similar field involving coding (e.g. physics or applied mathematics) Algorithms, data structures, complexity analysis and software design Hands-on senior level experience in Python programming Unix based systems, containerized environments and Kubernetes Working experience with databases: relational, NoSQL and time series Websocket, REST API More ❯

or monotonous, we envision a future where human well-being is safeguarded while closing the gaps in critical global labour needs. About the Role: We are looking for a Senior Software Engineer to help transform our advanced robotics stack into a dependable product ready for the real world. This is a deeply technical and hands on role. … production code, integrate subsystems, and work directly with robots in both simulation and real hardware environments. You will be part of a focused team responsible for the application level software that connects control, navigation, perception, learning, and platform systems. Your work will ensure that these components operate as a coherent and reliable system that users can interact with seamlessly. … iterate quickly. It is well suited to someone who enjoys working close to hardware and solving practical, cross disciplinary challenges. What You’ll Do: Develop and maintain application level software for humanoid robots Integrate software components from controls, navigation, computer vision, reinforcement learning, and platform teams Contribute to the structure and evolution of the application architecture and its More ❯

Senior C++ Software Engineer Salary: £100,000 – £135,000 Key Responsibilities Design, develop, and optimize software in C++ and/or Rust for control and orchestration systems. Build low-latency interfaces between hardware and classical compute systems. Collaborate with hardware teams to integrate software with FPGAs and high-speed digital electronics. Develop and maintain firmware … platforms. Analyze and optimize system performance including latency, throughput, and resource utilization. Participate in system architecture design and technical decision-making. Conduct code reviews , mentor junior engineers, and promote software best practices. Work with cross-functional teams to ensure seamless integration of hardware and software components for robust, production-ready systems. Ensure system reliability , fault tolerance , and performance … in data centre environments. Required Qualifications Bachelor’s or Master’s degree in Computer Engineering , Electrical Engineering , Physics , or a related field. 5+ years of professional experience in software development, with a focus on C++ and/or Rust . Strong understanding of FPGA architectures , toolchains (e.g., Xilinx Vivado, Intel Quartus), and hardware description languages ( VHDL/Verilog ). More ❯

Software Engineer Location: London Experience: 5–7 Years Industry: Market Making/Proprietary Trading/Capital Markets **Please note applicants coming from a buy side/trading/capital markets background will be given a strong preference** Looking for software engineers to join a small but highly skilled, and collaborative, bringing together expert traders and software … or Python (C++ a plus) Familiarity with databases (e.g., SQL Server, Postgres) Familiarity with developing, testing, or deploying with cloud providers (e.g., AWS, GCP, Azure) Experience using version control software (e.g., Git) Curiosity and a desire to solve challenging problems Strong programming ability A collaborative mindset and eagerness to give and receive feedback Excellent written and verbal communication skills More ❯