At a Glance
- Tasks: Design and build high-performance, cloud-native back-end systems and scalable APIs.
- Company: Join a forward-thinking tech company with a collaborative culture.
- Benefits: Enjoy 25 days of leave, private medical insurance, and a gym subscription.
- Other info: Embrace diversity and enjoy a culture that values creativity and open communication.
- Why this job: Make an impact by working on cutting-edge AI workloads and mentoring junior engineers.
- Qualifications: Strong experience in Golang, Kubernetes, and developing production systems.
The predicted salary is between 50000 - 95000 £ per year.
About Radiant
We’re looking for a Senior Software Engineer with strong experience in Golang and Kubernetes to join our core product team.
In this role, you'll design and build high-performance, cloud-native back-end systems and scalable APIs to support AI workloads, including LLMs and GPU-based services.
You’ll collaborate closely with cross-functional teams— including platform and machine learning—to design, develop, and deliver high-quality software solutions.
You’ll help build tools and services that power model training, inference, and orchestration in production environments, while mentoring junior engineers, upholding engineering best practices, and driving initiatives to improve code quality and system performance.
What You’ll Do
- Design, develop, and maintain robust applications and services in Go
- Implement secure, reliable APIs (g RPC/REST) and backend systems
- Work with Postgre SQL or similar relational databases for high-performance querying and storage
- Deploy and operate applications in Kubernetes, leveraging Helm charts and the Kubernetes API
- Contribute to architectural discussions, providing input on design reviews and system evolution
- Maintain high standards for code quality, observability, and maintainability through reviews and best practices
What you bring
- Proven experience developing production systems in Golang
- Hands‑on experience designing and deploying distributed systems and APIs (g RPC, REST) in production environments
- Proven ability to improve software quality through unit testing, integration testing, code reviews, and adherence to clean code principles Deep knowledge of Kubernetes and cloud-native architectures
- Hands‑on experience with containers, Helm, and microservice design patterns
- Ability to work autonomously with a proactive, solution‑oriented mindset
- Experience collaborating effectively with front‑end developers and cross‑functional teams
- Preferred Skills (Nice to Have)
- Strong understanding of modern Dev Ops workflows and CI/CD practices
- Experience deploying or serving LLMs or other GPU workloads (e. g. using v LLM, KServe)
- Experience tuning and scaling machine learning inference pipelines
Qualities we look for
- Set the standard: Every single day, you spot opportunities to constructively shake things up.
- Inspire the change: There's no blueprint for the future. You’ll embrace challenges and change.
- You're real and you’re true to yourself: We cherish and celebrate diversity so you’ll feel right at home whoever you are and whoever you’re talking to, you treat everyone the same.
- Salary Range Information
Based on market data and other factors, the salary range for this position is £50,000-95,000 and will vary depending on the candidate's experience.
Why should you join us?
What sets us apart is our blend of modern technology, competitive benefits, and an open, welcoming work culture that enables our people to thrive.
- 25 days of annual leave
- Culture that emphasizes results over hierarchy, process & ego: we place great emphasis on the quality, ingenuity and creativity of work.
- Open communication, regular feedback: we value smooth collaboration, direct and actionable feedback, and believe that leading with empathy and a growth mindset makes us better together.
- Learning Time: we all have dedicated learning time to focus on new skills, projects or interests that lay outside of your day‑to‑day job.
- Health & Wellbeing: we want everyone to feel healthy and happy, so we offer private medical insurance via Bupa.
- Cycle to Work Scheme: we're committed to building a sustainable business, so we encourage cycling to work.
- Gympass subscription to a variety of gyms and wellbeing apps
- Participation in the company shares program
- Enhanced parental pay & leave
- Diversity, Equality, Inclusion and
Belonging: We are an equal opportunity employer and we strive to reduce unconscious bias throughout our hiring process.
All applicants will be considered for employment without attention to ethnicity, religion, sexual orientation, gender identity, family or parental status, national origin, veteran, neurodiversity status or disability status.
To ensure our recruitment processes provide an equal opportunity for all applicants to succeed, we encourage you to let us know if there are any adjustments that we can make.
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Senior Backend Software Engineer - Core Services employer: Radiant
Radiant is an exceptional employer that fosters a culture of innovation and collaboration, making it an ideal place for a Senior Backend Software Engineer to thrive. With a strong emphasis on employee growth, competitive benefits, and a commitment to diversity and inclusion, Radiant provides a supportive environment where you can develop your skills while contributing to cutting-edge technology in a welcoming atmosphere. Enjoy 25 days of annual leave, dedicated learning time, and health and wellbeing initiatives that prioritise your happiness and professional development.
StudySmarter Expert Advice🤫
We think this is how you could land Senior Backend Software Engineer - Core Services
✨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 Radiant 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 Radiant.
✨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 Radiant.
✨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 Radiant 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 Senior Backend Software Engineer - Core Services
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 Radiant.
Craft a killer cover letter:Your cover letter is your chance to stand out—make it personal! Explain why you want to work at Radiant 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 Radiant
✨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 Radiant 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.
