At a Glance
- Tasks: Transform legacy software using AI and innovative engineering practices.
- Company: Join a forward-thinking tech company leading the AI revolution.
- Benefits: Attractive salary, hybrid work, and opportunities for professional growth.
- Other info: Exciting transformation journey with significant investment in technology.
- Why this job: Be at the forefront of AI-driven software engineering and make a real difference.
- Qualifications: Strong software engineering background, especially in C#/.NET and legacy systems.
The predicted salary is between 67500 - 82500 £ per year.
🚀 Principal Software Engineer – Agentic Engineering 📍 Reading | Hybrid 👥 3 positions available. 💰 £100,000 - £120,000 We're looking for three experienced Software Engineers to join a brand-new team.
Using AI and agentic engineering to modernise complex legacy software, and fundamentally change how engineering teams build software.
This isn't a traditional software engineering role.
You won't simply be picking up tickets, writing code and moving onto the next sprint.
You'll be working at the intersection of software engineering, architecture, AI, developer experience and legacy modernisation , helping to design the systems, standards and guardrails that allow engineers to deliver better software safely. 🧠 What will you actually be doing?
You'll be hands-on with some seriously complex legacy technology, using modern AI tooling and engineering practices to tackle technical debt that has often been difficult to address through traditional approaches.
- Use AI coding agents to investigate, refactor and modernise legacy codebases
- Design the "engineering harness" that gives AI agents the right context, rules and constraints to work effectively
- Build repository-level instructions, agent skills, prompts and dynamic context
- Work with technologies such as Claude Code, MCP and other agentic development tools
- Establish automated testing and AI evaluation frameworks (evals) to make sure speed doesn't come at the expense of quality
- Build guardrails, sandboxes and CI/CD controls around AI-driven development 🔧 What background are we looking for?
We're looking for someone who has built a seriously strong software engineering foundation .
You'll ideally have deep experience in C#/.
NET , alongside experience working with large, complex or legacy systems.
You might have worked with: .
NET: C#, .
NET Framework, ASP.
NET, Web Forms, MVC, SQL Server, Windows/IIS We're particularly interested if you've also been working with: 🤖 Claude Code, Cursor, Git Hub Copilot, Codex or similar coding agents 🔌 MCP / Model Context Protocol 🧩 Agentic development or AI-assisted software engineering 🧪 Automated testing, evals and quality frameworks 🏗️ Legacy modernisation, major refactoring or framework migrations ☁️ Developer experience, platform engineering or engineering productivity 🌍 Why join?
You'll be joining during a major transformation across Technology, with significant investment in:
- Legacy modernisation
- Public cloud migration
- A next-generation product platform
- AI-enabled software engineering If these positions are what you may be looking for in a new role, please apply and we'll happily go into more detail!
Principal AI Engineer employer: RedRock Resourcing
As an award-winning law firm, we pride ourselves on fostering a dynamic work culture that champions innovation and digital transformation. Our Bristol location offers a hybrid working model, allowing for flexibility while enjoying a collaborative environment, alongside excellent benefits such as private health insurance and personal training allowances to support your professional growth.
StudySmarter Expert Advice🤫
We think this is how you could land Principal AI Engineer
✨Join Local Tech Meetups
Get out there and mingle with fellow developers by joining local tech meetups. It’s a fantastic way to meet people who might be working at RedRock Resourcing or know someone who does. Plus, you can pick up some trendy tech skills and trends while you're at it!
✨Contribute to Open Source Projects
Show off your coding chops by jumping into open-source projects. Not only does this give you practical experience, but it also gets you noticed in the dev community. You'll create a killer portfolio that speaks volumes about your skills to RedRock Resourcing.
✨Tap into Online Developer Communities
Don’t underestimate the power of online developer communities like GitHub, Stack Overflow, and even Reddit. Participate in discussions, share your projects, and build your visibility. We can often find opportunities through these channels that can lead to a full-time gig at companies like RedRock Resourcing.
✨Explore Job Boards Specifically for Tech Roles
Keep your eyes peeled on job boards that focus on tech roles. Sites like TechCareers or Stack Overflow Jobs can often have listings for companies like RedRock Resourcing that might not show up on broader job sites. Make it a habit to check these regularly, and don’t hesitate to apply directly through our website!
We think you need these skills to ace Principal AI Engineer
Some tips for your application 🫡
Show off your coding skills:When applying for a software engineering role, it's super important to showcase your coding skills. Make sure your CV includes your tech stack, any relevant programming languages you’re comfortable with, and examples of projects you've worked on. If you have a GitHub profile, link it up! We love to see code in action.
Tailor your portfolio:For a full-time role, we’d expect to see some solid examples of your work in your portfolio. Make sure to include at least two or three projects that highlight your problem-solving skills and your ability to work with different technologies. Focus on the projects that are most relevant to the position at RedRock Resourcing.
Craft a killer cover letter:Your cover letter is your chance to stand out—make it personal! Explain why you want to work at RedRock Resourcing and how your skills align with the role. Show us your passion for software development. We dig enthusiastic candidates who understand the value of collaboration and continuous learning!
Be clear and concise:When it comes to writing your CV and cover letter, clarity is key. Avoid jargon that could confuse us and stick to simple, direct language. Highlight your achievements with quantifiable results where possible, and keep everything easy to read. A well-organised application goes a long way!
How to prepare for a job interview at RedRock Resourcing
✨Brush Up on Your Coding Skills
For a full-time software engineering role, it's crucial that we stay sharp with our coding abilities. Expect technical questions that might involve solving problems on the spot or discussing algorithms. Practise on platforms like LeetCode or HackerRank to get comfortable with the types of questions that often come up.
✨Know Your Tools and Frameworks
Make sure we’re well-acquainted with the tools and technologies listed in the job description. Familiarise ourselves with any specific frameworks or programming languages mentioned. If RedRock Resourcing uses React or Node.js, for instance, be ready to discuss how we’ve used them in previous projects or coursework.
✨Showcase Your Projects
Bring along a portfolio that highlights our best work. This could be code samples, GitHub repositories, or any side projects we’ve built. Make sure we can talk through our thought process for each project, especially the challenges we faced and how we solved them—this shows our problem-solving skills in action.
✨Prepare for Behavioural Questions
While technical skills are key, full-time positions also require cultural fit. Be ready to discuss our previous experiences and how we handle teamwork, conflict, and deadlines. Brush up on the STAR method—Situation, Task, Action, Result—to clearly articulate our past experiences when discussing how we've contributed to a team.
