The Team

Investors who've built semiconductors, run quantum labs, and operated fabs. The technical diligence isn't outsourced — it's what we do every day.

Sarah Lindqvist, Managing Director at Coexin Technology Partners
Sarah Lindqvist
Managing Director

Managing Director at Coexin since 2017, leading the firm's semiconductor and IC design investments. Board seats on ArborICS, Lumenwire, and OxideLayer. Focuses on pre-Series A teams working on domain-specific silicon, advanced packaging, and sub-2nm gate materials. Previously twelve years at Intel's advanced process technology group, where she led the 10nm and 7nm node development programs. PhD in applied physics, KTH Royal Institute of Technology, Stockholm.

Semiconductors Deep Tech Strategy
Marcus Osei, General Partner at Coexin Technology Partners
Marcus Osei
General Partner

General Partner at Coexin since 2017, leading quantum computing investments. Board seats on QuantVault and CrystalQNet. Focuses on pre-Series A teams tackling fault-tolerant qubit architectures and error correction at scale — the teams solving the engineering problem, not the benchmark problem. Previously nine years at MIT Lincoln Laboratory as a principal research scientist, publishing foundational work on superconducting qubit coherence times and surface code error thresholds. PhD in quantum information science, Caltech.

Quantum Computing Physics
Yuki Tanaka, General Partner at Coexin Technology Partners
Yuki Tanaka
General Partner

General Partner at Coexin since 2018, leading photonics and advanced materials investments. Board seats on Lumenwire and Tesseract Matter. Focuses on teams making silicon photonics interconnects and 2D material heterostructures manufacturable at datacenter scale. Holds 23 patents in optical waveguide design and silicon photonics integration. Previously held research and engineering roles at Corning Research, JDSU, and Stanford's Ginzton Laboratory.

Photonics Materials Science
Priya Subramaniam, Partner at Coexin Technology Partners
Priya Subramaniam
Partner

Partner at Coexin since 2019, leading IC design diligence and investment. Board seat on ArborICS. Focuses on pre-Series A teams building RISC-V custom silicon and advanced packaging solutions — founders who own the full architecture stack from ISA extensions to EDA toolchain. Previously principal engineer at Qualcomm's advanced modem architecture division, with deep expertise in custom silicon at volume.

IC Design Chip Architecture
Rafael Dominguez, Partner at Coexin Technology Partners
Rafael Dominguez
Partner

Partner at Coexin since 2020, leading fab automation and manufacturing technology investments. Board seats on Seraph Robotics and NovaSpin. Focuses on pre-Series A teams building autonomous manufacturing systems and process control technology for semiconductor fabs — the layer between the physics and the yield curve. Previously ran the autonomous manufacturing systems lab at CMU's Robotics Institute for six years, following engineering leadership roles at Rockwell Automation and Lam Research.

Robotics Manufacturing Tech

Technical Advisors

Dr. Anita Krishnaswamy
Technical Advisor — Semiconductor Process
Former VP Process Engineering, Applied Materials
Prof. Henrik Brauer
Technical Advisor — Quantum Systems
Professor of Quantum Information, ETH Zurich
Dr. James Okonkwo
Technical Advisor — Photonic Integration
Former CTO, Acacia Communications (now Cisco)

Talk to the People Who Understand the Physics

We don't hand technical diligence off to consultants. When you meet with Coexin, you're talking to people who have built what you're building. That makes conversations faster and more useful for everyone.

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