Senior Research Engineer (AI)

TL;DR

Senior Research Engineer (AI): Building and optimizing industry-leading conversational AI models for enterprise support, taking them from idea to production with an accent on instruction following, retrieval, memory, and long-horizon task completion. Focus on pushing the agent's reliability, capability, and efficiency forward, and designing/implementing frontier approaches for training, evaluation, and orchestration across the system.

Location: Onsite in San Francisco, USA. This is an in-office company.

Salary: £200,000–£300,000

Company

hirify.global is a leading conversational AI platform empowering brands to deliver concierge customer experiences through AI agents, backed by world-class investors.

What you will do

• Lead research and engineering efforts to improve core conversational capabilities in production, including instruction following, retrieval, memory, and long-horizon task completion.
• Build and iterate on end-to-end models and pipelines that optimize for quality, efficiency, and user experience.
• Partner with platform and product engineers to integrate new models into production systems.
• Break down ambiguous research ideas into clear, iterative milestones and roadmaps.

Requirements

• 5+ years of experience in AI/ML engineering or research.
• Prior experience post-training and deploying LLMs in production environments.
• Fluency in Python and modern ML tooling (training, evaluation, data pipelines).
• Track record of taking research ideas from prototype to reliable, measurable production impact.

Culture & Benefits

• In-office company driven by values: Just Get It Done, Invent What Customers Want, Winner’s Mindset, and The Polymath Principle.
• Medical, dental, and vision benefits.
• Take what you need vacation policy.
• Daily lunches, dinners, and snacks in the office.