Harris Computer
Junior Developer
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About the Role
Rialtas, part of the global Harris Computer family, is looking for a motivated Junior Developer to join our development team and help build, maintain, and improve the software solutions our customers rely on.
This is a great opportunity for someone looking to start or develop their career in software development. Whether you have gained your first experience through a junior role, internship, placement, personal projects, or a degree or training programme in software development, we'd love to hear from you.
Working closely with experienced developers and the wider team, you'll have the opportunity to develop your technical skills, contribute to real-world software projects, and learn how to design, build, test, and maintain reliable software solutions. You'll be supported as you grow your knowledge and take on more responsibility over time.
This is a full-time, fully remote position, with occasional visits to our office in Uffcott, Wroughton near Swindon, easily accessible from Junctions 15 and 16 on the M4.
What you will do
Your key responsibilities will include (but will not be limited to):
- Work with senior developers and AI coding agents to design, build, and maintain software applications and components, learning our repositories’ conventions and standards as you go.
- Learn to brief an agent well — giving it the right files, context and constraints so what it produces fits our codebase — and to recognise when an approach isn’t working and needs rethinking.
- Write clean, well-structured code under guidance, whether you wrote it or an agent drafted it, following our engineering standards and existing patterns in the codebase rather than reinventing them.
- Review AI-generated specifications, plans and code rather than taking them at face value: learn to spot where an agent has guessed, invented something that doesn’t exist, or drifted from the ticket, and to ask when you’re unsure.
- Help write and interpret tickets, understand requirements, and ask clarifying questions before work begins, in line with our “ask before assuming” approach.
- Support the testing and proof stages of a change: writing or running automated tests where they exist, and producing clear before/after evidence where they do not.
- Take part in reviewing the blast radius of a change (what else it could affect) and carry out structured manual verification steps.
- Participate in code reviews and the correction loop, learning to treat testing and review findings as an expected, normal part of shipping good work.
- Help keep documentation, tickets, and shared standards files up to date — including the standards and instruction files our agents work from — so learning is captured for the whole team, not lost in conversation.
- Get involved in exploring and championing effective use of AI development tools (such as Claude) as part of everyday delivery, and share what works with the rest of the team.
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What we are looking for
We're looking for someone who is curious, enjoys solving problems and is eager to learn and grow as a developer, while embodying our values (harriscomputer.com).
A degree in Computer Science, Engineering, or a related field (or equivalent practical experience), or a strong portfolio of personal/academic projects. Some experience with software development, whether through a degree, internship, personal projects, or a junior role.
Genuine enthusiasm for AI-assisted development and a real interest in tools like Claude; hands-on experience with them is desirable but not essential — a willingness to learn how we use them matters more. Experience with Delphi is a bonus but not required; exposure to Python/Django or modern web development is also welcome.
An AI-first instinct: your natural starting point is to work with an agent and then apply your own judgement to what it gives you, rather than treating AI as a last resort or a shortcut to skip the thinking.
Comfortable with the idea that “done” means proven, not just written — a mindset of testing, evidence, and asking questions rather than guessing.
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A willingness to learn new languages, tools, and processes quickly, and to work within a structured delivery process.
Good problem-solving instincts and attention to detail.
Ability to work well both independently and as part of a team, with good communication skills — including being able to set out clearly, in writing, what you want and why.
About Us
Rialtas is the market leader in providing accounting and administrative software and services for local councils in England and Wales. Rialtas is proud to be part of the Harris Computer family, a provider of mission critical software solutions for the Public Sector, Healthcare, Utilities and Private Sector verticals throughout North America, Europe, Asia, and Australia. The opportunity for personal career growth, as a result, is significant.
Rialtas Employment Policy
Rialtas is dedicated to the achievement of equality of opportunity for all of its staff and applicants for employment. This broadly interpreted policy not only prohibits discrimination on the basis of race, colour, religion, sex, sexual orientation, gender identity, age, national or ethnic origin, disability or any protected category under applicable law, but also ensures that competent individuals will be given the opportunity to join Rialtas and progress within the Company in accordance with their own abilities.
Benefits
Harris offer an extremely competitive UK employee benefits programme. 5 Personal Days leave entitlement are granted over and above the standard 25 days holiday and bank holidays. Harris also offers all UK employees an annual Lifestyle Reward amounting £325 per annum/pro rata.
Supporting your application
Our recruitment process will comprise of interviews and, at times, a written exercise, an assessment day and/or a presentation. As an equal opportunities’ employer, we want to make sure we do all we can to make this a positive experience for you. If your application is progressed, please make us aware of any adjustments or additional support we can provide you with.
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