Jonathan Yin

Energizer
DISC Type : I

Agent Engineer at Sierra

San Francisco, California, United States

Overview

Jonathan is an Agent Engineer at Sierra with a background in building AI-powered products. He previously co-founded Lifelike, a YC-backed startup focused on interactive AI stories. A Yale graduate in Computer Science and Statistics, his experience includes machine learning roles at Benchling and the Broad Institute of MIT and Harvard.


He co-founded an AI startup, Lifelike, that attracted 300, 000 users who sent over 12 million messages and generated 2. 5 million images.

Personality Overview

Enthusiastic

Imaginative

Big Picture Person

They are people oriented, friendly and like creating new connections.  They are not always early adopters but can be pursuaded by leveraging strong relationships. They are naturally enthusiastic, so take their promise with a pinch of salt.

Topics They Care About

AI Agents
His current role as an Agent Engineer at Sierra indicates a direct professional focus on the development of autonomous AI systems.
Consumer AI Startups
Co-founded and scaled Lifelike, a YC-backed consumer AI company, demonstrating experience in building products that achieve significant user engagement.
AI in Biotech
His background includes internships at Benchling and Octant, where he used machine learning for drug discovery and to optimize R&D platforms.

Media Appearances

Jonathan has no verified media appearances

Work History

7-2025
Agent Engineer at Sierra
3-2023 - 12-2024
Co-Founder at Lifelike (YC S23)
6-2022 - 8-2022
Software Engineer Intern at Benchling
6-2021 - 8-2021
Machine Learning Intern at Octant
1-2019 - 12-2020
Machine Learning Researcher - Regev Lab at Broad Institute of MIT and Harvard

Education

2020 - 2025
Bachelor of Science - BS from Yale University
Education details unavailable from Y Combinator

More Information

Social Presence :

Prographics :

Exp : 4 Location : San Francisco, California, United States Job Level : Junior Designation : Agent Engineer at Sierra
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Insights For Selling To Jonathan

During A Call Or A Meeting

DO's

  • Speak enthusiastically with energy, maintain a clear and confident tone
  • Invite them for a lunch or a drink/coffee
  • Share some stories about how you you have helped people in similar positions succeed

DONT's

  • Avoid cutting into their flow
  • Don’t push them to make a decision too fast, let them get comfortable first
  • Avoid overloading them with too much detail

When Cold Calling

When Writing An Email

While Negotiating & Closing

    The secret to closing fast with Jonathan is

  • Relationship and trust can be vital with them, sometimes more than anything else.
  • Will you ever get a clear answer from Jonathan

  • They are unlikely to say no directly, you have to make that decision yourself.

Insights For Deal Planning

    How fast (or slow) will Jonathan move?

  • They are not the fastest decision makers, their friendly approach can give false positive signals.
  • Can Jonathan take some risk or not?

  • They can take certain risks that are unlikely to have personal consequences.

You And Jonathan

Personality Compatibility


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