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Principal ML Engineer, Applied AI

TIFIN

$200,000 - $250,000
Sep 25, 2025
Boulder, CO, US • Remote, US
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TIFIN is looking to solve the problem of personalizing and improving financial advice at scale by leveraging AI and LLMs. They aim to build AI-powered financial technology that can deliver dynamic, tailored guidance without added complexity, and to create tools that power real outcomes in the financial services industry.

Requirements

  • Experience building generative AI products where LLM models are a core component
  • Experience shipping generative AI products powered by LLMs: designing and implementing agentic workflows that enable autonomous AI behaviors, leveraging the latest state-of-the-art research
  • Design and fine-tune open source and proprietary LLMs for various tasks such as answering questions, summarization, reasoning and planning, etc.
  • Apply reinforcement learning techniques—including reinforcement learning fine tuning (e.g., PPO, DPO, GRPO)—to continuously optimize model performance.
  • Develop and integrate agentic workflow systems that empower AI agents to operate autonomously, enabling proactive decision-making and dynamic interactions.

Responsibilities

  • Define and drive the AI strategy that drives TIFIN’s innovation and growth
  • Collaborate with product team and software engineering team to build end-to-end product systems.
  • Zero-to-one product development: rapidly prototype, evaluate, integrate, and test new product features in collaboration with product and engineering teams.
  • Develop and integrate agentic workflow systems that empower AI agents to operate autonomously, enabling proactive decision-making and dynamic interactions.
  • Design and fine-tune open source and proprietary LLMs for various tasks such as answering questions, summarization, reasoning and planning, etc.
  • Apply reinforcement learning techniques—including reinforcement learning fine tuning (e.g., PPO, DPO, GRPO)—to continuously optimize model performance.

Other

  • 7+ years of experience (post-MS/Ph.D) in applied AI engineering, including 2+ years as a technical leader
  • Resilience and adaptability - experience working at early-stage startups or building 0-1 is a plus
  • technical leadership experience
  • This is an individual contributor and technical leadership role reporting into the Head of AI.