At a Glance
- Tasks: Engage with customers to optimise AI workflows and ensure seamless production integration.
- Company: Join Callosum, a pioneering tech company focused on innovative AI solutions.
- Benefits: Competitive salary, equity options, private healthcare, and relocation support.
- Other info: Dynamic role with opportunities for leadership and career growth in a flat structure.
- Why this job: Shape the future of AI by working directly with cutting-edge technology and customer teams.
- Qualifications: Strong software engineering skills and experience with production ML systems.
The predicted salary is between 80000 - 100000 £ per year.
Forward Deployed Engineers own Callosum's customer engagements end to end. You will work directly with customer engineering teams to understand their AI workloads, design and run rigorous evaluations against their production pipelines, integrate optimised workflows into their systems, and make sure the results hold in production. At Callosum, FDEs are the technical bridge between what customers run and what we build. What you learn shapes the research and platform roadmap. The evaluations you run are how we prove the technology in production. As an early member of the team, you will help build the methodology, tooling, and engagement practices the function runs on. The role is engineering-led: you will employ technical judgment to recognise what kind of system a problem needs and prototype it. You will work closely with the engineers designing new intelligent systems, with the platform team that serves them, and directly with senior technical stakeholders on the customer side. We run a flat Member of Technical Staff structure. Responsibility and scope grow with what you demonstrate, including leadership of the FDE function as the team scales.
What You'll Build
- Customer engagement from first workload scoping through evaluation, integration, and production deployment
- Design and run rigorous evaluations on customers' production workloads: set success criteria, instrument the comparison, present results to their engineering teams
- Develop deep technical understanding of customer systems (retrieval pipelines, agentic workflows, code intelligence stacks) and design optimised Callosum workflows
- Integrate Callosum workflows into customer environments and support them through to stable production
- Work with our research and platform teams to turn what you learn into general product capability
- Build the team's shared methodology: evaluation harnesses, integration runbooks, and engagement standards
What You Bring
- Strong software engineering background with experience in production ML/LLM systems, distributed systems, or large-scale infrastructure
- Rigour in evaluation or benchmarking work
- Experience working directly with external engineering teams, whether as a forward deployed engineer, solutions architect, technical consultant, or comparable customer-facing role
- A bias for action, comfort with ambiguity and a strong sense of ownership.
What Sets You Apart
- Experience with LLM serving infrastructure, agent orchestration, or retrieval systems
- Familiarity with novel accelerator platforms
- Experience at an early-stage company or in a founding‑engineer role
What We Offer
- Competitive Salary, determined by skills and experience
- Equity & Ownership
- Private healthcare
- We offer Visa sponsorship and relocation benefits to hire the best in the world
- We work in person at our London office. You'll have the tools, space and setup to do your best work, and if you have specific needs, just tell us
- We're committed to building an inclusive workplace where everyone feels welcome, and believe in equal opportunities for all.
Forward Deployed Engineer - Member of Technical Staff employer: Callosum
At Callosum, we pride ourselves on being an exceptional employer, offering a dynamic work culture that fosters innovation and collaboration. As a Forward Deployed Engineer, you will have the opportunity to engage directly with cutting-edge AI technologies while working alongside talented engineers in a flat organisational structure that encourages growth and leadership. Our London office provides a supportive environment with competitive salaries, equity options, and comprehensive benefits, ensuring that every team member can thrive both personally and professionally.
