At a Glance
- Tasks: Design and build innovative multi-cloud orchestration systems for intelligent compute.
- Company: Join Callosum, a pioneering Intelligent Systems company revolutionising AI infrastructure.
- Benefits: Competitive salary, flexible work options, and opportunities for professional growth.
- Other info: Dynamic team environment focused on solving the impossible with cutting-edge technology.
- Why this job: Tackle complex challenges and shape the future of heterogeneous intelligence in AI.
- Qualifications: Strong Kubernetes experience and knowledge of multi-cloud infrastructure required.
The predicted salary is between 60000 - 80000 £ per year.
About Us
Artificial intelligence scaled on a bet - that bigger models, more identical chips, and more data would keep delivering. As problems grow more complex and the requirements of intelligence more diverse, that bet is breaking down. The next era belongs to heterogeneous intelligence: diverse models on diverse chips, each with distinct strengths, co-evolving into systems of capability unreachable by any single model or accelerator.
Callosum is the Intelligent Systems company. We built the infrastructure to make that possible. Our co-evolution engine optimises simultaneously across workflows, agents, and silicon. We launched in early 2026 showing orders of magnitude improvements in performance and a shift in the cost-performance frontier that no single chip or model provider can provide. We believe intelligence comes from the system, not the model. We are scientists and engineers solving what others consider impossible. If you thrive on hard problems, and are passionate and energised by the scale of the challenge, we'd love to hear from you.
About the Role
Callosum believes that orders of magnitude improvements in AI systems will come through application-aware orchestration across heterogeneous hardware. We are building that vision: infrastructure that treats the full landscape of compute as a unified, co-evolving system, evolved beyond GPUs. Current orchestration stacks were built for the homogeneous world - naive to the strengths of new chips and blind to the demands of modern multi-agent workflows.
This role defines how Callosum addresses this problem at the cloud and cluster level, transforming a fragmented compute ecosystem into a unified, exploitable resource pool. We are building the novel paradigm of orchestration that understands accelerator-specific constraints and capabilities. Your work is what makes heterogeneous compute intelligent at scale: every chip placed precisely and allocated efficiently in a stack that is resource-aware and diversity-native.
What You’ll Build
- Design and build multi-cloud orchestration systems that abstract provider-specific differences behind a unified deployment and scheduling layer
- Extend Kubernetes - particularly Dynamic Resource Allocation (DRA) — to be aware of heterogeneous accelerator topologies and capabilities, and multi-agent AI workflows
- Implement intelligent load balancing and placement strategies across cloud providers, regions, and hardware types
- Build control plane systems that enable efficient allocation and management of heterogeneous accelerator capacity while preserving the ability to exploit hardware-specific strengths
- Collaborate with an Accelerator Systems Software engineer to surface low-level scheduling primitives into the orchestration layer
What You Bring
- Strong experience with Kubernetes internals - custom controllers, schedulers, device plugins, CRDs, and the DRA framework
- You've built or operated multi-cloud infrastructure and have a detailed understanding of the networking, storage, and compute differences between major providers
- Familiarity with GPU/accelerator resource management in cluster environments (e.g. MIG, time-slicing, device plugins, topology-aware scheduling)
- Experience with infrastructure-as-code, fleet management, and the reliability engineering required to keep large-scale heterogeneous systems running
Cloud Systems & Resource Orchestration - Member of Technical Staff in London employer: Callosum
At Callosum, we pride ourselves on being an exceptional employer that fosters a culture of innovation and collaboration. Our team thrives in a dynamic environment where tackling complex challenges is not just encouraged but celebrated, offering ample opportunities for professional growth and development. Located at the forefront of AI technology, we provide our employees with access to cutting-edge resources and a supportive community that values diverse perspectives and ideas.
StudySmarter Expert Advice🤫
We think this is how you could land Cloud Systems & Resource Orchestration - Member of Technical Staff in London
✨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 Callosum 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 Callosum.
✨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 Callosum.
✨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 Callosum 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 Cloud Systems & Resource Orchestration - Member of Technical Staff in London
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 Callosum.
Craft a killer cover letter:Your cover letter is your chance to stand out—make it personal! Explain why you want to work at Callosum 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 Callosum
✨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 Callosum 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.
