126 to 150 of 904 Permanent Senior Software Engineer Jobs

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 ❯

Senior Software Engineer, Product Security Engineering page is loaded Senior Software Engineer, Product Security Engineeringlocations: London, United Kingdomtime type: Full timeposted on: Posted Todayjob requisition id: RThe LSEG DevSecOps Engineering team inside the cyber security division is looking for Senior Software Engineers to build tools and automations to help secure software development for thousands of developers across the group. You will be working as part of a geographically distributed remote team comprising of security engineers and software engineers. Our team's mission is to allow engineers to embed security best practices frictionlessly as part of their day to day work. The ideal candidate will have the following skills: Deep … understanding of cyber security principles, secure software development, and threat modeling Experience conducting security assessments, code reviews, and vulnerability management across diverse technology stacks Experience in building full-stack products (web applications, APIs, CI tooling or low-level software) Hands-on experience with cloud technologies (AWS, GCP, Azure) and containers (Docker, Kubernetes), with a focus on security Familiarity More ❯

Senior Software Engineer/Developer (Java AWS) London/WFH to £100k Opportunity to progress your career in a senior, hands-on Software Engineer role at a global FinTech/CFD trading company that has been consistently voted as one of the UKs top employers. As a Senior Software Engineer you More ❯

Senior Software Engineer As a software engineer, you'll contribute to our international growth by building robust software systems for our Machine Learning solutions, both on premise and on major cloud platforms. Exciting developments are happening in the world of AI, offering unprecedented opportunities for businesses to innovate and gain a competitive edge. Now … lasting positive impact. We design tailor-made AI solutions for our clients across industries such as ASML, Randstad, VRT, GfK, and many more. Therefore we are looking for exceptional Software Engineers to join our fast growing team and accelerate businesses with intelligent technology. As a software engineer, you'll contribute to our international growth by building robust … software systems for our Machine Learning solutions on major cloud platforms . Translate and design technical solutions and concepts based on client needs Explore, design and implement software and cloud architecture with a focus on security, reliability, scalability, testability, etc. Build and deploy production ready machine learning applications on AWS, Azure and GCP Collaborate with Machine Learning Engineers More ❯

Senior Golang Software Engineer - AI Scale-up - Voice AI (Permanent - flexible salary) Senior Golang Software Engineer is now required by an Innovative AI scale up to build the strategic architecture platform for their AI product offering This role will be responsible for building a stable and replicable architecture for their core application, focusing on … application journey. Implement secure on-device storage for sensitive data. Collaborate with back-end engineers to successfully integrate RESTful APIs for data collection and AI services. Key Requirements: Strong Senior Software Engineer experience Exceptional Go/Golang skills Experience working across low-latency and zero trust platforms Experience across more than 1 cloud platform (AWS, Azure and More ❯

Senior Full-Stack Software Engineer -hybrid, London 2-3 days a week in the office -up to £120K An early-stage B2B SaaS company seeks a Lead Software Engineer to join their UK based team. The role requires significant experience across Full-stack Engineering in addition to experience leading software engineers. The company is … with multiple languages and has an open mind to finding the best technologies to solve their customers’ problems. About you : We’re looking for a hands-on Full-Stack Software Engineer who has experience in early-stage and scale-up technology companies. You must thrive in an environment where you work closely with customers and relish in receiving … their feedback. The tech: -Python -React, Typescript -APIs -Databases -Infrastructure Senior Full-Stack Software Engineer More ❯

Senior Full-Stack Software Engineer -hybrid, London 2-3 days a week in the office -up to £120K An early-stage B2B SaaS company seeks a Lead Software Engineer to join their UK based team. The role requires significant experience across Full-stack Engineering in addition to experience leading software engineers. The company is … with multiple languages and has an open mind to finding the best technologies to solve their customers’ problems. About you : We’re looking for a hands-on Full-Stack Software Engineer who has experience in early-stage and scale-up technology companies. You must thrive in an environment where you work closely with customers and relish in receiving … their feedback. The tech: -Python -React, Typescript -APIs -Databases -Infrastructure Senior Full-Stack Software Engineer More ❯

Senior/Lead Embedded Software Engineer | £60-70k | St. Ives If you want to develop yourself from a Senior to a Lead engineer with a leading company developing extremely precise systems. This is the role for you. Platform Recruitment is partnered with a global leader in extremely responsive control software for industrial automation … looking for a Senior Embedded Software Engineer. Youll be responsible for developing firmware & software, leading the software development team, and innovating the next generation of concepts. Responsibilities as an Embedded Software Engineer: Design, develop, optimise, and thoroughly test firmware and software for execution on bare-metal processors and embedded Linux/RTOS platforms … Lead a cross-functional team of hardware and software engineers to define the requirements and lead the software development life cycle Requirements: Proven experience in leading firmware development for bare-metal and Linux/RTOS-based systems, with high proficiency in high-performance C/C++. Extensive knowledge of various communication protocols (e.g., TCP/UDP, SPI/ More ❯

Step into the future of defence technology with an exceptional opportunity as a Senior Software Engineer. If you're passionate about innovation and looking to make a real impact, this role offers you the chance to work on cutting-edge projects that redefine what's possible in the industry. Join a forward-thinking team that values excellence, creativity … and career development. What You Will Do: Define, design, develop, and test embedded and application software to deliver high-quality solutions on time. Apply object-oriented design techniques to ensure code reusability and integration with testing frameworks. Review system design artefacts to derive software requirements and architecture that meet high-level system needs. Use modelling tools like RSA … and EA to document and maintain software designs, ensuring accuracy for code generation. Contribute to bids and proposals by generating technical estimates and identifying associated risks. Propose and implement improvements in tools, processes, and techniques to enhance software development efficiency. What You Will Bring: A degree in an engineering, mathematical, or science-based subject, or equivalent experience. Proficiency More ❯

A company at the forefront of developing intricate scientific systems is seeking a Senior Software Engineer to join their team. In this role, you’ll go beyond routine coding tasks and focus on developing complete solutions. You’ll work on everything from front-end interaction and data handling to integrating with specialized hardware components. Essentially, you’ll … be creating the software “nervous system” for cutting-edge imaging and inspection technology. You’ll operate within a close-knit, interdisciplinary group dedicated to continually enhancing the company’s core platforms. Key Responsibilities: Architectural Design: Consider the entire software stack—from how users engage with the application, through data analysis workflows, to the lower-level connections with sensors … and control units. Software Implementation: Develop robust, maintainable software primarily in Python, ensuring it easily interfaces with complex instrumentation while embracing test-driven development. Technical Innovation: Investigate and address challenging engineering issues, conceiving smart, high-performance solutions that expand the boundaries of what’s possible. Essential Qualifications & Experience: Professional Background: A minimum of five years’ experience as a More ❯

Senior Software Engineer (C++) A leading European defence organisation, recognised with multiple recent industry and employer awards, is seeking a Senior Software Engineer to join its growing UK software engineering capability. This company has been ranked among the top employers for veterans, received Gold-level recognition for its support of the armed forces … UK technology and engineering careers through multi-million-pound site expansions. You’ll be working on the next generation of mission planning and control systems, contributing across the full software engineering lifecycle while collaborating with international partners and stakeholders. What you will do: • Lead the design, development, and delivery of complex, mission-critical software in Core Java and …/or C++ • Translate and refine software requirements with internal and external customers, ensuring full lifecycle management • Spearhead technical implementation and drive certification processes, while mentoring other engineers • Work in a collaborative environment that values innovation, diversity, and personal development, with strong support for work–life balance Skills and experience: • Excellent proficiency in Core Java and/or C++ More ❯

PGIM Fixed Income - Senior Software Engineer page is loaded PGIM Fixed Income - Senior Software Engineerlocations: Letterkenny, Irelandtime type: Full timeposted on: Posted Todayjob requisition id: R-122454As the Global Asset Management business of Prudential, we're always looking for ways to improve financial services. We're passionate about making a meaningful impact - touching the lives … We Look For: In PGIM Fixed Income, our Front Office technology team is a dynamic, fast-paced environment with exciting challenges on the horizon. We are looking for a senior software engineer with strong tech skills to help us build our next generation of portfolio management and trading systems. Fixed income knowledge is preferred but not required … part of a delivery team, collaborating with others to understand requirements, analyses and refine stories, design solutions, implement them, test them, and support them in production. Ensure that the software you build is reliable and easy to support in production. Providing level 3 support for production issues when needed. What you will bring: 5+ years of experience developing software More ❯

Job Title: Senior Software Engineer 15186 Job Location: Redondo Beach California 90278 Onsite Requirements: C++ RHEL DevSecOps Job Description: Client is looking for an Intermediate to Senior Software Engineer to support our Ground Solutions and Mission Support (GSMS) Software (SW) Integrated Project Team (IPT). The SW IPT is a large restricted group … specialized SW focus. This position is 100% on-site in a Sensitive Compartmented Investigation Facility (SCIF) located in Redondo Beach, CA. We are looking for an energetic and passionate software engineer to join our diverse and highly skilled team as we work to provide innovative solutions to complex issues in support of our Customer's national security mission … capabilities per Mathematical Algorithm Requirements (MARs). Identify, troubleshoot, and provide/turnover SW fixes to Discrepancy Reports (DRs). Collaborate with SW IPT subject matter experts (SMEs) and senior staff engineers across multiple SW subsystems. Basic Qualifications: Bachelor's degree in a STEM discipline with 5 - 8 years of experience, a Master's degree in a STEM discipline More ❯

Senior Developer/Senior Software Engineer/Senior .NET Developer C#, (.NET 8.0+), Azure, SQL, Cosmos, React, TypeScript Remote – Work from home With monthly travel to London or Ipswich Around £65,000 - £75,000 p.a. Plus 25 days holiday “You will be working with a highly motivated group of intelligent, enthusiastic, adaptable team players who … have a shared vision to deliver world class software with great usability and performance.” Well that says it all doesn’t it, no need for me to rattle on anymore! I assume you’ve applied by now but just in case... We’re looking for a Senior Software Engineer with strong .NET skills and experience to More ❯

Recruit and Employ is actively seeking a dynamic candidate for one of our major accounts for the role of: Senior Software Engineer - Messaging Services The Senior Software Engineer (SSE) is a member of a highly motivated team. This role will develop, enhance, and sustain innovative solutions to improve the customer experience. The SSE will … implement complex software in accordance with project requirements, UX design, and industry best practices. The SSE will also review designs and participate in meaningful collaboration sessions on how to solve customer problems and participate in determining scope for new projects. The SSE will own and components of the architecture and direct the work of other team members. Essential Duties … and Responsibilities: Work with Scrum team to develop new native software that will be a key component of our product offering. Other duties may be assigned. Stay current with new technology trends. Responsible for managing and maintaining project and work backlog; able to re-prioritize tasks as the business deems appropriate. Work cross functionally to resolve complex customer problems. More ❯

Senior Software Engineer - Gen AI 1 day a week in Central London, hybrid working Salaries paying £90k-£125k + annual bonus Oliver Bernard have partnered with a rapidly growing FinTech in London who are building the next generation of AI based financial products. We are looking for Senior Software Engineers who have commercial experience with …/LLMs, Vector Databases. The client are looking for someone to start as soon as possible and they are moving quickly with interviews! Please apply now for more information! Senior Software Engineer - Gen AI More ❯

Senior Software Engineer - Gen AI 1 day a week in Central London, hybrid working Salaries paying £90k-£125k + annual bonus Oliver Bernard have partnered with a rapidly growing FinTech in London who are building the next generation of AI based financial products. We are looking for Senior Software Engineers who have commercial experience with …/LLMs, Vector Databases. The client are looking for someone to start as soon as possible and they are moving quickly with interviews! Please apply now for more information! Senior Software Engineer - Gen AI More ❯

Senior Software Engineer, Global Payroll Rippling gives businesses one place to run HR, IT, and Finance. It brings together all of the workforce systems that are normally scattered across a company, like payroll, expenses, benefits, and computers. For the first time ever, you can manage and automate every part of the employee lifecycle in a single system. … of America's best startup employers by Forbes. We prioritize candidate safety. Please be aware that all official communication will only be sent addresses. About the role As a Senior Software Engineer on the Global Payroll team, you will play a critical role in advancing our full-service payroll platform that handles payroll configuration and calculations for … drive initiatives by creating new product functionality from the ground up as well as rearchitecting key components of our platform to help us scale. If you are an experienced engineer looking for high impact and autonomy, come build the future of payroll with us! What you will do Partner with design and product management leaders to shape and drive More ❯

Senior Software Engineer (TypeScript + AWS + Lambda) 12-Month Fixed Term Contract (strong potential to go perm or extend) Full-Time | Fully Remote (UK-based) £70,000 – £80,000 + Benefits We’re looking for an experienced Senior Software Engineer with strong AWS cloud experience to join our team on a 12-month … a high-traffic environment , working with cutting-edge AWS technologies and a collaborative, delivery-focused engineering team. What You’ll Be Doing Design, develop, and maintain modern, cloud-based software applications using TypeScript , Node.js , and AWS services (Lambda, DynamoDB, S3, etc.). Contribute to architectural discussions, driving best practices in software design and system scalability. Optimise code and … Apply TDD and design patterns to produce reliable, maintainable, high-quality software. Translate business and functional requirements into elegant technical solutions. What We’re Looking For Ideally 7+ years’ software engineering experience with a focus on back-end or full-stack development. Ideally 5+ years’ experience building applications on AWS , ideally with serverless architectures (Lambda, DynamoDB, API Gateway). More ❯

Senior Firmware & Software Engineer Permanent £competitive salary Norfolk Our client is a leading research and development company specialising in advanced electric motors, controllers, and inverters across a variety of applications. They are seeking a talented Senior Firmware & Software Engineer to join their innovative engineering team on a permanent basis. This is a fantastic opportunity … experience in power and embedded electronics, bare-metal development, and C programming to work on cutting-edge technology in a fast-paced, collaborative environment. About the Role As a Senior Firmware & Software Engineer, you'll be a core member of the Engineering Team, contributing to the development of firmware and software solutions that power our advanced … systems. You'll work closely with the Lead Firmware Engineer, Chief Technical Officer, and Lead Electronics Engineer to meet project milestones and ensure top-quality performance. What Youll Do Design, develop, maintain, and test embedded firmware and software for electric power systems Work closely with hardware engineers to integrate code with electronics Write clear, maintainable code in More ❯

Senior Embedded Software Engineer Location: Cambridge Salary: £60,000 – £70,000 Contract: Permanent Are you passionate about building embedded systems that power cutting-edge RF and electronic technologies? A growing engineering team is looking for an Embedded Software Engineer to take a leading role in the development of innovative hardware products - from concept through to … volume production. You’ll work across disciplines to design embedded software for highly complex systems, helping to manage, control, and calibrate RF platforms and advanced electronics. Embedded Software Engineer Key Responsibilities: Work directly with Xilinx SoCs (e.g. Zynq, Versal) to implement embedded software solutions alongside FPGA and digital hardware teams. Define, architect, and document embedded software requirements. Drive continuous improvements across embedded platforms - enhancing performance, robustness, and maintainability. Embedded Software Engineer background: Strong experience developing bare-metal embedded applications and bootloaders . Hands-on development experience with Xilinx SoCs , including Zynq or Versal platforms. knowledge of platforms such as STM32F , MSP430 , PIC , and/or Embedded Linux . Ability to work closely with More ❯

A growing SaaS business is hiring a Senior Software Engineer to lead the technical rebuild of its flagship product. This is a hands-on role for an experienced engineer who loves modernising legacy systems and is excited about using AI tools to accelerate design, refactoring, and delivery . You’ll be the technical driver behind a … technical leadership, you’ll design architecture, write production-quality code, and use AI tools to streamline development and shape how the next generation of the product is built. Role: Senior Software Engineer (AI-Enabled Refactor) Salary: Up to £70,000 per annum (flexible for exceptional candidates) Location: Hybrid – London office once per fortnight, remote within the UK … from the ground up Freedom to experiment with AI technologies that accelerate development Startup-style autonomy backed by the stability of a well-funded organisation If you’re a senior engineer who enjoys modernisation projects and wants to work at the intersection of AI and large-scale software engineering , this is an opportunity to build something that More ❯

Senior Software Engineer (Typescript/Next.js) (m/f/d) About Us At LeasingMarkt.de , we bring customers and dealers together to make car leasing more accessible, transparent, and efficient. With over 1,000 partner dealerships and nearly 2 million users across the DACH region and the Netherlands, we've become Germany's leasing platform . To … keep growing and driving innovation in the mobility space, we're looking for a Lead Software Engineer to join our high-performance team at our Düsseldorf office. As a Senior Software Engineer , you will play a key role in designing and developing robust, scalable web applications that power one of the largest automotive leasing marketplaces … cross-functional team to build and improve solutions that are not only effective, but also architecturally sound and easy to maintain. You'll help us elevate the standard for software quality, stability, and long-term value. What You'll Do: Improve and extend our existing codebase while maintaining a high standard of code quality and test coverage. Design and More ❯

Senior Software Engineer | Newcastle | Hybrid Location: Newcastle upon Tyne (Hybrid – 2 days per week in the office) Salary: Up to £70k + Excellent Benefits Our client, a forward-thinking and people-centric technology organisation, is seeking a Senior Software Engineer to join their team. In this key role, you’ll help drive technical excellence … mentor engineers, and deliver impactful, high-quality software solutions. If you’re passionate about technology, love solving complex problems, and enjoy supporting others to grow, this opportunity offers a strong platform to make a lasting impact. What you’ll be doing Stay hands-on with the codebase: conduct reviews, pair program, and contribute code where it matters most. Mentor … improve system performance, reliability, and maintainability. Champion engineering best practices and help foster a culture of collaboration, ownership, and continuous improvement. What we’re looking for Extensive experience in software engineering, with a strong record of technical leadership. Deep understanding of modern software engineering practices, tools, and system architecture. Strong proficiency in C# and experience building robust, scalable More ❯

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 environment , who is interested in a data-driven AI-first journey. Responsibilities: Design, implement, and test firmware for embedded systems … issues. Develop and manage automated test frameworks for embedded devices to ensure robust validation. Create and execute both manual and automated test cases. Key requirements: 5+ years experience in software development with C in an embedded environment. Proven knowledge in digital electronics and working at the interface between hardware and firmware. Strong experience debugging embedded software and associated More ❯