Junior Device Software Developer

Salary: £24,000 - 52,000 per year

Requirements:

• We are looking for someone with a strong interest in edge devices and embedded systems, low-level software development, and hardware integration.
• Curiosity, a willingness to learn, and a hands-on mindset are important to us.
• You should be reliable, curious, and ready to deal with problems and get them solved.
• You do not need formal experience working in software, but you should be able to demonstrate your interest through a personal project or similar activity.
• You might have built a home automation controller, a robot, a data logger, or similar using microcontrollers, Arduino, Pi, or another relevant platform.
• You should have some familiarity with at least one general-purpose programming language.
• Successful applicants will be required to pass a BPSS (Baseline Personnel Security Standard) check.

Responsibilities:

• We will have you help create and test software and firmware within a skilled team.
• We will support you in learning a range of current and new technologies from experienced software and hardware engineers.
• You will take on increasing responsibility for elements of each project as you continue to prove yourself.
• You will spend time developing, integrating, and testing embedded applications with a wide range of hardware under the supervision and guidance of senior engineers.
• You will contribute ideas to both the business development and social side of our company.

Technologies:

• AI
• Arduino
• Cloud
• Embedded
• Firmware
• Hardware
• IoT
• Support
• Security
• FPGA
• Linux
• Python

More:

We are One Big Circle, a fast-growing Bristol technology company formed in 2017 that delivers Intelligent Video solutions by combining video, IoT, cloud, and AI to solve real-world industry problems and improve operational efficiency and safety. We are growing, profitable, and ambitious, with our flagship award-winning product AIVR used across the rail industry and recognised as a market-leading solution. We have built a supportive, inclusive, and empowering culture where people contribute, learn, and are valued. This is an office-based role in Bristol with flexible working and the option to work from home one day per week. Our benefits include a pension scheme, 25 days holiday plus bank holidays, life assurance, private healthcare cover, share options, training, complimentary snacks and refreshments, bike-to-work access, secure bike storage, shower facilities, and social events.

last updated 33 week of 2026