# Retym

> Retym is a Cupertino semiconductor company developing programmable coherent digital signal processors for optical transceivers that connect AI and cloud data centers. Founded in 2021 by Sachin Gandhi and Dr. Roni (Aharon) El-Bahar, it positions itself as an independent chip supplier to optical module makers. It emerged from stealth in March 2025 with more than $180 million raised, including a $75 million Series D led by Spark Capital.

- **Founded:** 2021
- **Headquarters:** Cupertino, United States
- **Founders:** Sachin Gandhi (Co-founder and CEO), Dr. Roni (Aharon) El-Bahar (Co-founder and CTO)
- **Products:** Programmable coherent DSP, ADC/DAC and signal-processing design
- **Notable:** Emerged from stealth at OFC in March 2025 with more than $180 million in reported cumulative funding., Closed a $75 million Series D led by Spark Capital in March 2025., Built a multinational engineering presence in the United States, Israel and Armenia.

## Products & services

- **Programmable coherent DSP** — Semiconductor design intended for integration into high-speed optical transceivers for cloud and AI data center links; specific commercial product names and measured specifications have not been publicly released.
- **ADC/DAC and signal-processing design** — Analog-to-digital and digital-to-analog conversion design, equalization and error-correction work used in the company's coherent DSP approach.

## Achievements

- Emerged from stealth at OFC in March 2025 with more than $180 million in reported cumulative funding.
- Closed a $75 million Series D led by Spark Capital in March 2025.
- Built a multinational engineering presence in the United States, Israel and Armenia.

## Latest updates

- **2025-03** — Retym emerged from stealth at OFC, announced more than $180 million raised, and detailed a $75 million Series D led by Spark Capital.
- **2025-03** — Co-founder and CTO Roni El-Bahar published a founder account explaining the independent DSP supplier thesis.

## Links

- Website: https://retym.com/
- LinkedIn: https://www.linkedin.com/company/retym

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Profile page: https://yespress.io/retym
Published by YesPress — https://yespress.io
Last updated: 2026-09-28