---
title: 'Open Application at QphoX'
canonical: 'https://feeny.ai/job/open-application-qphox-delft-south-holland-acwqpdv3rksn'
type: 'job'
last_seen: '2026-09-10'
---

# Open Application at QphoX

- **Company:** QphoX
- **Location:** Delft South Holland, Netherlands
- **Posted:** 2024-05-21
- **Last confirmed live:** 2026-09-10
- **Apply:** https://job-boards.eu.greenhouse.io/qphox/jobs/4340266101

## Job description

QphoX Careers

Send us a message about yourself and we'll reach out for more information.

*By submitting this form, you have agreed to send your personal information, and have read and accepted our [Privacy Policy](https://qphox.eu/privacy) and [Terms of Service](https://qphox.eu/tos).

## About QphoX

## Company Overview
- **One-liner**: QphoX develops quantum transduction technology to optically connect quantum computers, enabling scalable quantum networking.
- **Entity Type**: Private (Series A‑II, alive)
- **Headquarters**: Delft, Netherlands
- **Founded**: 2021
- **Founders**: Simon Groeblacher (CEO) and Robert Stockill (CTO)

## Core Business
- **Primary industry**: Quantum computing infrastructure (quantum networking, quantum transduction, photonics)
- **Target customers**: B2B – quantum computer manufacturers, research labs, defense and government agencies (e.g., AFRL, NQCC)
- **Mission / purpose**: “Bringing innovative networking solutions to tackle the most challenging scaling problems facing quantum computing.” [qphox.eu](https://qphox.eu/)

## Products & Services
- **QphoX Quantum Transducer**: A patented device that converts single microwave photons to single optical (telecom) photons, enabling quantum links between qubits without heat transfer. Type: Hardware (quantum component).
- **QphoX Optical Control System**: A full solution for delivering RF signals into extreme cryogenic environments via optical fibers, replacing traditional coaxial cables. Type: Hardware + system.
- **CryoSwitch Control Module**: A cryogenic microwave switch (designed for use with Radiall’s SP6T actuator) for routing signals at low temperatures. Type: Hardware.
- **White Paper – “Scalable Quantum Computing with Optical Links”**: Published in March 2025, outlining the company’s approach. Type: Educational resource. [qphox.eu](https://qphox.eu/)

## Market Standing
- **Valuation**: Not publicly disclosed
- **Key Metric**: Total funding raised – **$22.61M** (USD) as of latest round (Series A‑II, €10M from EIC STEP Scale‑Up in November 2025). [cbinsights.com](https://www.cbinsights.com/company/qphox)
- **Notable Investors / Partners**:
  - EIC STEP Scale‑Up (€10M)
  - Techleap, High‑Tech Gruenderfonds, Quantonation, Speedinvest, and 19+ other investors
  - Rigetti Computing (joint $5.8M AFRL contract)
  - UK National Quantum Computing Centre (NQCC)
  - Welinq, Sorbonne University (Project Meet‑Q)
  - European Quantum Pilot Line SUPREME (work package leader)
- **Growth Signals**:
  - Won $5.8M AFRL contract with Rigetti to enable optical networks of superconducting qubits (May 2025)
  - Launched breakthrough product for distributed quantum computing over long‑distance optical networks (January 2026)
  - Selected by European Innovation Council for €10M STEP Scale‑Up scheme (November 2025)
  - Leading work package in €50M European Quantum Pilot P4Q (starting 2026)
  - Team of 36 people from 21 nationalities, with 44% women [qphox.eu/team](https://qphox.eu/team/)

## Competitive Advantages
- **Patented quantum transduction technology** – the first viable interface between single microwave and single optical photons, solving the scaling bottleneck of quantum computers.
- **Optical control system** – replaces high‑thermal‑conductivity coaxial cables with low‑thermal‑conductivity optical fibers, preserving cryogenic environments.
- **Single‑photon interfaces** – leverage decades of progress in photonic, MEMS, and superconducting nanofabrication.
- **Strong government and industrial partnerships** (AFRL, NQCC, Rigetti, European Commission) validating the technology roadmap.

## Strategic Focus
- Scale quantum computing performance through optical networking and parallelization.
- Drive the development of the quantum internet by enabling distributed quantum computing over long distances.
- Commercialise the Quantum Transducer and Optical Control System for integration into existing quantum processors.
- Expand through European and US defence contracts (AFRL) and EU pilot lines.

## Why Work Here
- **Culture highlights**: Emphasises teamwork, diversity and inclusion, transparency, and self‑motivation. Hiring process includes a cultural fit call, technical presentation, and references. [job-boards.greenhouse.io/qphox](https://job-boards.greenhouse.io/qphox)
- **Work environment**: Office in Delft, Netherlands (Elektronicaweg 10). Likely on‑site, but hybrid/remote not explicitly stated.
- **Team**: Multidisciplinary mix of scientists, engineers, and technologists; 21 nationalities, 44% women.
- **Notable perks**: Work at the forefront of quantum technology, contribute to a scalable quantum future, and collaborate with leading institutions (Rigetti, NQCC, Sorbonne).
- **Open roles** (as of mid‑2026): Quantum Application Scientist/Engineer, Head of Product, Production Engineer, Nanofabrication Production Engineer, Personal Assistant, Assistant Controller. [job-boards.greenhouse.io/qphox](https://job-boards.greenhouse.io/qphox)

## Sources
1. [QphoX website](https://qphox.eu/)
2. [QphoX Careers page (Greenhouse)](https://job-boards.greenhouse.io/qphox)
3. [QphoX Team page](https://qphox.eu/team/)
4. [CB Insights QphoX profile](https://www.cbinsights.com/company/qphox)

## Other roles at QphoX

- [RF Electronics Engineer (D/F/M)](https://feeny.ai/job/rf-electronics-engineer-d-f-m-qphox-delft-south-holland-sje9z7sxjmk9) — Delft South Holland, Netherlands
- [Measurement Automation Scientist (D/F/M)](https://feeny.ai/job/measurement-automation-scientist-d-f-m-qphox-delft-south-holland-3nx41fzds4js) — Delft South Holland, Netherlands
- [Device Design Engineer (D/F/M)](https://feeny.ai/job/device-design-engineer-d-f-m-qphox-delft-south-holland-phhxxksxqr8z) — Delft South Holland, Netherlands
- [Production Technician (Electronics Assembly) (D/F/M)](https://feeny.ai/job/production-technician-electronics-assembly-d-f-m-qphox-delft-south-holland-ny6pjvqh38w9) — Delft South Holland, Netherlands
- [Assistant Controller (D/F/M)](https://feeny.ai/job/assistant-controller-d-f-m-qphox-delft-south-holland-3pta6kwq3rdy) — Delft South Holland, Netherlands
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