Forward Deployed Engineer

The role

Forward Deployed Engineers own technical execution for strategic customer engagements from discovery to production delivery. You will work across the AI stack including GPU orchestration, inference, and model post-training.

What you will do

• Lead technical discovery with customer teams across inference workloads, agentic applications and post-training.
• Translate customer needs into feasible technical solutions with clear success criteria.
• Own proofs of concept end to end including defining evaluation criteria and benchmarking.
• Architect and build complex AI systems including agentic applications and model-serving infrastructure.
• Manage customer relationships, project plans, and workstreams.
• Identify repeatable patterns and model gaps to shape platform or model capabilities.
• Build prototypes and generalize them into platform and research priorities.
• Define playbooks, reference architectures, and reusable technical assets.

Required qualifications

• Strong technical fluency in code, architecture and system behavior.
• Strong Python.
• Experience shipping production-grade systems.
• Track record of leading complex technical projects.
• Hands-on infrastructure and inference experience.
• Experience deploying multi-node GPU clusters (Kubernetes or Slurm).
• Experience serving large models in production (vLLM, SGLang).
• Experience benchmarking quantization, caching, batching and speculative decoding.
• Shipped LLM-based agents to production in the last 1–2 years.
• Designed agent harnesses (tool calling and MCP, context management, orchestration, guardrails) and evals.
• 5+ years of relevant experience delivering technical systems.
• 2+ years in a technical leadership role (e.g., tech lead, engineering manager or founding engineer).

Benefits

• Salary and equity.
• Stock options.
• Comprehensive medical, dental, vision, and life.
• Annual wellness allowance.
• Lunch and dinner provided in the office daily.
• 22 weeks paid parental leave for all new birthing and non-birthing parents, including adoptive and surrogate journeys.
• Unlimited paid time off in the U.S.
• 30 days paid time off in the U.K.
• Visa sponsorship support.
• Regular off-sites, happy hours, and team celebrations.

Before you apply

• This position may require access to technology or source code subject to the U.S. Export Administration Regulations.
• Any offer of employment for this role may be conditioned on the Company's ability to provide the candidate with access to such technology or source code in compliance with applicable U.S. export contr

About the company

Reflection is a research lab making intelligence open and accessible for everyone to use, customize, and build on. They build open models to help shape the future of AI.