Junior Platform Software Developer

Junior Platform Software Developer

2026-09-29T00:00:00

Location: Newport, Gwent, GB, NP20 1

Contract Type: Any

Application Closing Date: 2026-10-28T10:04:53.413

About One Big Circle

Be part of an award-winning workplace: The Sunday Times Best Medium-sized Technology Company 2025. Formed in 2017, One Big Circle is a fast-growing Bristol technology company that provides "Intelligent Video" solutions. We focus entirely on solving real-world industry problems by fusing new technology in the field of Video, IOT, Cloud, and AI, providing end-to-end solutions that dramatically improve operational efficiency and safety for our customers.

Our culture emphasizes high-quality technical delivery and a fast-paced environment. We have built a team dynamic that challenges and empowers our staff, fostering an environment where everyone contributes and learns. We are growing, profitable, and have ambitious plans for expansion in existing and new markets.

We are looking for a proactive and motivated individual to support the growth of our flagship product: AIVR (Automated Intelligent Video Review). AIVR is a state-of-the-art video technology used by thousands in the rail industry, recognized as the market leader with numerous awards. We aim to develop many more opportunities to accelerate growth in various markets.

Role Summary

An exciting opportunity to start a career with a diverse and fast-growing team, developing skills on innovative projects. We seek someone with a strong interest in software development related to large-scale, low-latency data processing, and web interface data presentation. Curiosity, a willingness to learn, and a hands-on mindset are key, even if you don't have all the knowledge from day one.

Responsibilities

• Help create and test software within a skilled team that values efficiency.
• Learn a range of current and new technologies from experienced engineers.
• Gradually take on more responsibilities within each project.
• Contribute to building capabilities into an extensive, scalable 4PB+ data platform, guided by senior engineers.
• Gain experience with technologies such as:
• Python
• AWS services
• Complex data-platform architecture supporting secure, multi-tenant, partitioned, access-controlled environments
• Docker & Microservices
• Modern web applications built with React.js and TypeScript

Personal Qualities and Experience

We are looking for someone who enjoys learning new skills, is reliable, curious, and problem-solving. Confidence in applying from under-represented groups is encouraged. Formal experience isn't required—demonstrating passion through projects such as full-stack web apps, AWS activities, or CICD pipelines is valuable. Basic familiarity with at least one programming language is preferred. You should also be eager to contribute ideas to both business and social aspects of the company.

Company Benefits Include:

• Auto-enrolment Pension Scheme
• 25 Days Holiday plus bank holidays
• Life Assurance
• Private Healthcare Cover
• Work-related training courses
• Complimentary snacks and refreshments, including fresh fruit
• Office-centric role
• Access to Bike to Work Scheme
• Secure bike storage and shower facilities
• Social events

How to Apply

Join an award-winning team, named "The Sunday Times Best Medium-sized Technology Company 2025." At One Big Circle, you'll be part of a growing team where your ideas and contributions are valued. Please send your CV and cover letter. Successful applicants will be required to pass a BPSS (Baseline Personnel Security Standard) check.

#s1-Gen

Junior Platform Software DeveloperBristol Full- Time 37.5 hours over 5 days. Office centric from Bristol Office£26,500 About One Big Circle Be part of an award-winning workplace: The Sunday Times Best Medium-sized Technology Company 2025 Formed in 2017, One Big Circle is a fast-growing Bristol technology company that provides "Intelligent Video" solutions. We focus entirely on solving real-world industry problems by fusing new technology in the field of Video, IOT, Cloud and AI providing end to end solutions which allow our customers to dramatically improve their operational efficiency and safety. Our culture is one of high-quality technical delivery and we work at a speed that many industries are unaccustomed to; we have done this by building a team dynamic that challenges and empowers our people and creating an environment where everyone contributes and learns. We are growing, profitable and have ambitious plans to continue expansion in and beyond our existing markets. We are looking for a proactive and motivated individual to join our team to support the business in further growing our flagship award-winning product: AIVR. AIVR (Automated Intelligent Video Review) is a state-of-the-art video technology system used by thousands of people in the rail industry. AIVR has won dozens of awards and is recognised as the market leading solution, but we are building many more opportunities both in existing and new markets which will further accelerate our growth. We have built a culture where people feel supported, included, and empowered to do their best work. Our team is growing, and we'd love for you to be part of the journey. Role SummaryAn exciting opportunity to start a career with a diverse and fast-growing team, developing your skills on a variety of innovative projects.We're looking for someone with a strong interest in software development in the context of large scale, low-latency data processing, and presentation of data within a web interface. You don't need to know everything from day one, but curiosity, a willingness to learn, and a hands-on mindset are key. ResponsibilitiesYou will help create and test software within a skilled team that likes getting things done.You will learn a range of current and new technologies from experienced software and hardware engineers.You will be given increasing responsibility for elements of each project as you continue to prove yourself.There is significant scope to adapt the exact role to your skills and interests, but you will spend time building new capabilities into an existing broad-ranging and scalable 4PB+ data platform, under the supervision and guidance of senior engineers. You'll gain experience of a range of full-stack relevant technologies such as:PythonA range of native AWS servicesComplex data-platform architecture, multi-tenant, partitioned, and access-controlled environments supporting secure and scalable data accessDocker & MicroservicesModern Web Applications built in React.js, and TypeScript Personal Qualities and ExperienceYou are someone who enjoys learning new skills, finding out things and also learning from mistakes. We'd like you to be reliable, curious, and ready to deal with problems and get them solved. We strongly encourage those from under-represented groups to be confident in applying to us. You do not need to have any formal experience working in software, but you should be able to demonstrate your interest by having done something or worked on a 'passion project' yourself. You might have built a full-stack web app, made something interesting using AWS services, built and optimized CICD deployment pipelines, or some other relevant activity. You should have some familiarity with at least one general purpose programming language.You will also be keen to contribute ideas to both the business development and thesocial side of the company. Company Benefits Include:

• Auto enrolment Pension Scheme 25 Days
Holiday plus bank holidays
• Life Assurance Private Healthcare Cover Work related training courses as required Complimentary snacks and refreshments including fresh fruit Office-centric role Access to Bike to Work Scheme Secure bike storage and shower facilities Social events How to ApplyJoin an award-winning team, named 'The Sunday Times Best Medium-sized Technology Company 2025'. At One Big Circle, you'll be part of a fast-growing team where your ideas and contributions are truly valued. Please send your CV and covering letter to Successful applicants will be required to pass a BPSS (Baseline Personnel Security Standard) check.