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Smartbox

Firmware Engineer

CompanySmartbox
LocationBristol, England, United Kingdom
Posted At3/14/2026

UK Visa Sponsorship Analytics

Occupation Type
Programmers and software development professionals
Occupation Code Skill LevelHigher Skilled
Sponsorship Salary Threshold
£54,700 (£28.05 per hour)
Occupation rate applies

Above analytics are generated algorithmically based on job titles and may not always be the same as the company's job classification. You can also check detailed occupation eligibility, and salary criteria on our UK Visa Eligible Occupations & Salary Thresholds page.

Disclaimer: Hunt UK Visa Sponsors aggregates job listings from publicly available sources, such as search engines, to assist with your job hunting. We do not claim affiliation with Smartbox. For the most up-to-date job details, please visit the official website by clicking "Apply Now."

Description
Salary: £50,000.00 to £60,000.00

Location: Bristol; Hybrid

Join us at Smartbox as a Firmware Engineer!

Are you a passionate Firmware Engineer looking to make a real impact by giving a voice to those without speech Smartbox is looking for a dedicated individual like you to join our team and contribute to enhancing the lives of people with disabilities.

Your Impact

As Our Firmware Engineer, You Will

  • Test software: Ensuring comprehensive automated test coverage of your code, writing automated tests, GUIs, and utility apps in languages such as Python and C#.
  • Libraries and apps: Creating software libraries and demo apps in C-compatible languages such as C#, C++, or Rust to control our firmware subsystems.
  • Technical strategy: Executing and collaborating on our strategy for highly reliable, mission-critical hardware and firmware.
  • Validation and debugging: Implementing and improving our device test plans, debugging, and validating upcoming firmware and software.
  • Quality assurance: Promptly analysing and correcting quality issues.
  • Project management: Taking ownership of firmware and software projects from start to finish.

Firmware And Software Development

  • Designing, developing and maintaining embedded software in C for Zephyr RTOS and Embedded Linux.
  • Applying best practices in embedded software architecture and testing.

Essential Qualifications / Skills / Experience

  • Degree or equivalent experience in an engineering subject (Electronics, Computer Science, Software), Physics, Mathematics, or another scientific subject.
  • 4+ years of experience in software development in one or more of the following languages: C, C++, Rust.
  • 4+ years of experience in embedded software development in C.
  • Knowledge of Computer Science fundamentals in data structures, algorithm design, problem-solving, and complexity analysis.
  • Strong grounding in embedded software architecture, with a focus on maintainability, modularity, fault-tolerance and testability.
  • Confident and experienced with automated testing, including unit, integration and system tests, mocking and automation frameworks.
  • An understanding of API design and the creation of clear, stable abstractions for hardware / firmware interaction.
  • Skilled at debugging in constrained environments and using hardware / software debugging tools.
  • A proven track record of innovation and quality software development throughout the entire software product lifecycle.
  • Ability to solve complex technical problems in elegant and maintainable ways, demonstrating systems thinking across hardware, firmware and application layers.
  • Experience with embedded platforms (for example: Embedded Linux, Arduino, STM32, Nordic, Zephyr RTOS).
  • A passion and drive for excellence in software craftsmanship.
  • Linux, Bash / shell, CI (Continuous integration) experience.
  • Ability to read electronics schematics.
  • A collaborative and supportive team player - contributing actively to shared goals and supporting colleagues across disciplines.
  • Practical, proactive mindset - comfortable taking initiative and working through ambiguity in a fast-moving team.

  • About Smartbox

    At Smartbox, we're proud to be at the forefront of assistive communication technology. Our innovative products are used globally by individuals with diverse needs. Our values - passionate, caring, empowering, achieving together, and enabling change - resonate in everything we do.

    Our Inclusive Culture

    We believe in giving everyone a voice. Joining Smartbox means joining a diverse team that values collaboration and supports a community that relies on our technology for effective communication.

    Our Commitment to Sustainability

    At Smartbox, we not only innovate but also prioritise sustainability. We aim to minimise our carbon footprint and promote a greener world through sustainable solutions. By joining us, you'll contribute to shaping a more inclusive society while actively supporting our sustainability efforts.

    Our D&I Commitments

    At Smartbox, we prioritise diversity and inclusivity in our work environment. Here's how we do it:

    • Recognised as a Disability Confident Employer by the UK Government and Founding Partner of Purple Tuesday.
    • Our recruitment practices are inclusive and barrier-free, with adjustments available during the application process and throughout your career with us.
    • We believe in adding to our culture, not just fitting in. Our diverse team combines unique talents to create products that reflect the diversity of our users and customers.

    Rewards And Benefits

    Discover a world of rewards and benefits tailored to your wellbeing at Smartbox. Beyond a competitive salary and private medical insurance, explore perks like a hybrid working model, wellness benefits, and paid volunteering days.

    Ready to Make a Difference

    Join us at Smartbox and embark on a fulfilling career where your work truly matters. Apply now and be a part of a team dedicated to creating technology that changes lives.

    Agencies

    Please respect that at this current time, we wish to try to recruit directly from the market rather than engage support from an agency.

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