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TXM is recruiting on behalf of our client as their trusted recruitment partner for a Principal Software Design Engineer / Site Lead. This is a senior, hands-on technical role combined with leadership responsibility, offering the opportunity to shape next-generation embedded products while leading a site-based engineering team. The Role: This position is ideal for an experienced Embedded Software Engineer who enjoys both deep technical involvement and people leadership. You will take ownership of embedded software design and development for advanced hardware platforms, while coordinating and guiding a local engineering team to deliver high-quality results. Key Responsibilities • Design, develop, and maintain embedded software for ARM-based hardware platforms, with a strong focus on real-time operating systems (RTOS), ideally Zephyr, • Lead and coordinate a site-based engineering team, including task allocation, workload prioritisation, and day-to-day technical oversight, • Develop, debug, and maintain high-quality embedded C code, following best practices and coding standards (e.g. MISRA where appropriate), • Implement and optimise wireless communication protocols such as Bluetooth, Wi-Fi, Zigbee, or similar technologies, • Collaborate closely with hardware engineers and other stakeholders to define requirements, architecture, and system design, • Support development of user interfaces or related applications using web-based technologies such as JavaScript and HTML, • Develop Linux-based applications for testing and simulation purposes, • Produce and maintain clear technical documentation covering design, implementation, testing, and troubleshooting, • Promote secure software development practices, including encryption and secure communication, • Stay up to date with emerging technologies and industry best practices to drive continuous improvement and innovation Skills & Experience • Strong commercial experience programming in C within RTOS environments (Zephyr, FreeRTOS, or similar), • Proven background in embedded software development for real-time, hardware-integrated systems, • Experience with wireless communication protocols and connectivity technologies, • Working knowledge of JavaScript and HTML, • Experience with Linux OS application development for testing or simulation, • Familiarity with embedded development tools, IDEs, and version control systems such as Git, • Demonstrated leadership experience, with the ability to manage workloads and motivate engineering teams, • Strong analytical and problem-solving skills, with the ability to work autonomously on complex systems Qualifications • Bachelor’s degree in Computer Science, Electronic Engineering, or a related discipline (or equivalent experience), • 5+ years’ experience in embedded software engineering, • Experience within consumer electronics, IoT, or similar embedded product environments is advantageous If you are interested and would like to hear more about this role, please apply right away

The Role As a Senior Software Engineer, you will play a key hands-on role in the design and development of complex backend systems. Net) At a glance Software Engineer role on a mission-critical payments platform * Focus on back-end C# /. Key Responsibilities Analyse, design, and develop scalable, hi

Degree in Software Engineering or Computer Science preferred. You’ll lead back-end and data architecture development, work closely with customers, and contribute to software supporting fleet operations and system performance.

CUDA/GPU Systems Engineer (ML Infra). They’re looking for engineers with experience working close to the GPU layer. GPU performance engineering or HPC background.

Senior Back-End Software Engineer. If you are a senior engineer who enjoys combining solid back-end expertise, architectural thinking, and a modern AI-enabled engineering approach, we’d love to hear from you. This is a great opportunity for an engineer who enjoys solving real product and platform

This is an applied role, and we are looking to hire a software engineer with experience in cloud computing and distributed systems. Docker), infrastructure-as-code software (e. Work on challenging engineering problems that have a real impact on the industry.

As a Senior Software Engineer, you will work closely with engineering leadership and product teams to build and evolve a scalable SaaS platform supporting international growth. Senior Software Engineer – Fit-Tech SaaS | Up to £80,000 | UK Remote. Backed by an experienced leadership team with a st

Senior Software Engineer: Up to £475 per day Outside IR35 : 6 months rolling : Hybrid Monthly (London). Senior Software Engineer : Up to £475 per day Outside IR35 : 6 months rolling : Hybrid Monthly (London). An innovative digital consultancy is looking for experienced Senior Software Engineers to

Degree in Software Engineering, Electrical Engineering, or Controls Engineering. As a Senior Software Engineer, you will design, develop, document, and commission control software for custom automation machinery. Senior Software Engineer – Automation & Control Systems.

They’re looking for a Senior Backend Software Engineer to join one of their product engineering teams, with a focus on building and running services in TypeScript / Node. Senior Software Engineer – Backend (TypeScript / Node. Helping set and uphold engineering best practices, and acting as a sen

Senior Software Developer (C# /. You’ll join a Microsoft-focused software business at the point where things get properly interesting: they’re now a. This is a true “senior all-rounder” role.

Are you an Embedded Software Engineer who loves getting deep into the kernel, bringing systems to life, and solving complex hardware–software challenges?. Embedded Software Engineer – Join a Team Building Cutting‑Edge Tech. Experience with software systems engineering principles.

Bytes is a top provider of premium IT solutions and services, working with SMEs, corporations, and public sector organizations to modernize and digitally transform their IT infrastructures.Founded in 1982, Bytes has experienced significant growth, now employing over 750 people across seven locations

Salary: Up to £80,000 dependent on experienceHL are looking for a talented full stack Senior Software Engineer to join a Pensions & Retirement product engineering team in building market leading solutions for our clients.

Key Responsibilities Define and maintain the architecture and technical direction for the platform Work closely with Product and Engineering teams to translate product roadmap initiatives into scalable technical designs Lead architectural discussions and technical design reviews across engineering t

Senior Python Software Engineer Circa £56,000 + up to 15% bonus | Hybrid (2 days per week in Oxford)The software you'll work on is business critical. Due to progression, this role exists to replace a senior engineer within a well-established software company operating in the highly regulated energy

Job Description Senior Software Engineer Salary: Negotiableplus benefits, pension (7% contribution), 25 days holiday & life insurance We are looking for senior software engineers with a range of levels of experience including designing and delivering software applications.

Software Real Time & Embedded Engineering PROFILE: You graduated with a Master of Engineering, Computer Science, Computer Engineering or any other related field You enjoy working within a DevOps/Agile/Scrum team and being plunged into a challenging environment requiring reactivity and resourcefulnes

As a Senior Software Engineer (Front End), you will take ownership of front-end engineering deliverables from design through implementation. Job Description My client, a global organisation operating within financial markets technology, is hiring a Senior Software Engineer (Front End) to join their

What are the opportunities for a Senior Software Engineer at Gearset? Our small engineering teams start from a few core principles but evolve over time. About you A pragmatic approach to working, prioritising iteration and delivering value to customers, over process and deliberation Previous experie

Staff Engineers at Bazaarvoice lead software initiatives from conception to delivery, while driving engineering best practices and helping mentor talent. Its official: Bazaarvoice is a Great Place to Work in the US , Australia, India, Lithuania, France, Germany and the UK! As the Lead Engineer of Po

Are you passionate about automation and looking to lead cutting-edge projects in a collaborative, multi-disciplinary environment? Our client, 3P Innovation, are a leader in automated machinery for the pharmaceutical, medical device, and FMCG industries, and they are seeking a Senior Controls Systems

Job Description Senior Embedded Software Engineer Competitive Salary | Telford | Hybrid A leading industrial automation company is seeking a Senior Embedded Software Engineer to design and develop real-time embedded software for production products. Key Responsibilities Develop embedded C/C++ softwa

Are you a Senior Software Engineer looking for an interesting job opportunity? Our client, TKMS ATLAS UK, are seeking a Senior Software Engineer with skills in Java to work on the development of marine-based autonomous systems.

The organisation is passionate about engineering excellence, innovation, and continuous improvement, using modern technologies to deliver high-quality, resilient software solutions. NET Core) using C# Strong API development experience (REST, GraphQL) Solid experience with relational databases (SQL S

Senior Embedded Software Engineer Location: Edinburgh | Employment: Permanent | Working: On-site Salary: Flexible — tailored around the right candidate About the RoleJoin a leading engineering & technology company driving next-gen high-performance products. You'll take ownership of embedded

Job Description Your new companyYou'll be joining a cutting-edge engineering and technology organisation within Aerospace that has grown rapidly in the UK, now pushing into global markets. Formed by world leading experts in science/software the business is redefining how high-performance components/

Title:Senior Software Engineer Python Department:Procode ITLocation:Hybrid - Commuting distance of our Oxford officeSalary:Circa £56,065 + up to 15% discretionary bonus schemeSponsorship:Unfortunately, we are unable to offer sponsorship for this roleAre you a senior-level engineer who loves buildi

Job Description The Senior Software Engineer will work within the Systems and Software team in the Programmes area of STS Defence, developing and maintaining software throughout the Software Development Lifecycle from requirements elicitation, through to in service delivery. The post will provide te

Key Responsibilities Cloud Infrastructure & DevOps (Primary Focus) Own and manage our AWS infrastructure, acting as the team's cloud platform expert Be one of the leaders in the migration toward microservices and ephemeral architecture Lead in infrastructure as code Establish and maintain CI/CD pipe

A leading quantum computing start-up in the United Kingdom is seeking a Senior Software Infrastructure Engineer to manage and develop innovative cloud-based solutions. Ideal candidates will have a strong background in software development, excellent problem-solving skills, and a passion for creating

A leading developer security platform is seeking a Senior Software Engineer to join their team in Greater London. This role involves designing and implementing high-quality software solutions while mentoring junior engineers.

A consulting firm in the United Kingdom is looking for a Senior Software Engineer to design, develop, and maintain innovative applications for a diverse range of international clients. The successful candidate will have a minimum of 4 years in software development, proficient in SQL, Git, and Agile

Senior Software Engineer, Site Reliability Engineering, AI Agent. Site Reliability Engineering (SRE) combines software and systems engineering to build and run large-scale, massively distributed, fault‑tolerant systems. We're proud to be our engineers' engineers and love voiding warranties by taki

Senior Software Engineer - Workload Identity. We are looking for an experienced, curious and driven software engineer to join the founding team of an exciting new area of our business. It is also a challenging area which touches on many different foundational pieces of modern software development ��

FX Digital is a specialist Connected TV agency, providing a wide range of services, including Product Strategy, Design, Engineering, and Test Automation. FX Digital is a specialist Connected TV agency, providing a wide range of services, including Product Strategy, Design, Engineering, and Test Auto

As an Infrastructure Engineer in the Commercial and Investment Banking team, you will design and maintain robust infrastructure solutions that support our firm's strategic goals. You will collaborate with internal teams to ensure technical alignment and drive best practices in infrastructure enginee

Nscale is looking for a Senior Software Engineer to build and scale the control/data plane systems and application services that power our GenAI cloud. At Nscale, our Software engineers form the backbone of our product offering. Nscale is the GPU cloud engineered for AI.

Collaborates with software engineers and other infrastructure teams to troubleshoot issues and optimise infrastructure performance. GitHub is the world’s leading platform for agentic software development — powered by Copilot to build, scale, and deliver secure software. We’re looking for a sen

As a Software Engineer at Relay, you'll:. Collaborate closely with top engineers, data scientists, and product leaders in a highly autonomous and impact-driven environment. Diego Protas – Director of Engineering.

Join Flock as a Senior Software Engineer on our Growth & Trading team, where you’ll play a pivotal role in building and developing the services that support our policies and drive our business. As a Senior Engineer at Flock you will own problems end to end, from design and build to deployment and

Join our Development team in Brighton where you'll lead and support the software team in designing, implementing, and maintaining high-quality software solutions for Paxton's product portfolio, ensuring technical integrity across user interfaces, back-end API services, mobile apps, and cloud service

Seniority level: Mid-Senior level. Collaborate with cloud engineers to design and implement AWS-based solutions. If you’re ready to bring your engineering skills to a place where tech meets transformation, we’d love to hear from you!.

Practical coding exercise (60–90 minutes) – a live coding session with our CTO and a Senior Engineer based on a task we’ll provide. We’re seeking a Senior React Native Engineer to help build, refine, and scale our encrypted email application, C. You’ll collaborate closely with our CTO, cry

The Senior Software Engineer is responsible for writing Software Design Specifications (SDS) documents, leading smaller software projects, conducting Source Code Reviews (SCRs), and supporting commissioning independently or as part of a larger team. Degree in Software, Electrical, or Controls Engine

Senior Software Engineer – SRE Core Infra. We are looking for a Senior Software Engineer to join our Platform SRE Core Infrastructure team. Platform engineering mindset – infrastructure as a product consumed by engineering teams; prioritise usability, documentation and long term maintainability.