---
title: 'RF Electronics Engineer (D/F/M) at QphoX'
canonical: 'https://feeny.ai/job/rf-electronics-engineer-d-f-m-qphox-delft-south-holland-sje9z7sxjmk9'
type: 'job'
last_seen: '2026-09-10'
---

# RF Electronics Engineer (D/F/M) at QphoX

- **Company:** QphoX
- **Location:** Delft South Holland, Netherlands
- **Posted:** 2026-08-31
- **Last confirmed live:** 2026-09-10
- **Apply:** https://job-boards.eu.greenhouse.io/qphox/jobs/4963958101

## Job description

QphoX is looking for a RF Electronics Engineer to join us in developing and building our technology for scalable and networked quantum computing. In this role, you will collaborate with scientists and engineers focusing on the development of optical interconnects for control, readout and networking of quantum processors. As a RF Electronics Engineer, you will contribute to the conceptualisation, design and realisation of hardware for the delivery and detection of RF signals in the SHF band, both at room temperature as well as at cryogenic temperatures.

In-depth understanding of quantum networking or quantum computing is not required for this role.

You will be involved in:

- Simulation, design and measurement of ICs, PCBs and interconnects for high-integrity delivery and detection of RF signals in the SHF band for both room temperature and cryogenic hardware.
- Development of circuitry for impedance matching of electro-optic and opto-electronic converters.
- Analysing, summarising, and presenting results through reports, presentations, and technical discussions.
- Collaborating closely within a diverse, multidisciplinary team of scientists and engineers.

Skills and knowledge you will bring to QphoX:

- A masters (WO) degree in electrical engineering, physics or a related subject.
- 2+ years of industry or applied research experience in one or more of the following: RF circuit design, RF systems engineering, RF test & measurement.
- Proven track record in conceptualization and design of high-frequency electronic circuits, components and interconnects.
- Advanced to expert level knowledge in using EM field solver software, such Ansys HFSS, Cadence AWR, SONNET and COMSOL.
- Proficiency in practical characterization and testing of microwave devices using lab equipment such as oscilloscopes, vector network analysers and spectrum analysers.
- Experience designing analogue electronics circuit and PCB based RF solutions.
- Experience with Altium is an advantage.
- The ability to work collaboratively with inter-disciplinary teams.
- An organised and rigorous working style.

Our Ideal Candidate:

Our ideal candidate is passionate about optimizing signal delivery and detection chains. They combine physical intuition of EM fields with systematic calculation and simulation to deliver practical solutions. They are able to communicate their results to a broad audience.

Teamwork is an essential value of our company, hence fitting into the team is crucial. Finally, the candidate should thrive in a fast-paced learning environment.

We strongly encourage people of any underrepresented group to apply as we are committed to diversity and work to build an inclusive environment where all people, regardless of gender, race, religion, or background, can thrive.

Benefits and other perks of working with us:

- Competitive salary.
- Employment stock ownership plan.
- End-year performance-based bonus.
- 25 days of holidays on a full-time basis.
- Career growth opportunities.
- Opportunities to network and connect.

About us:

At QphoX we strive to be an inclusive place where a diverse mix of talented people want to come, to learn, to live their passion and do their best work.

We are dedicated to promoting equality, creating a safe environment for everyone, and believe deeply in diversity of race, gender, sexual orientation, religion, ethnicity, national origin, age, socioeconomic background and all the other fascinating characteristics that make us different. We truly think diversity is a strength and working in a diverse environment, and being exposed to a variety of perspectives makes us stronger as a team and better human beings.

## 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

- [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
- [Open Application](https://feeny.ai/job/open-application-qphox-delft-south-holland-acwqpdv3rksn) — Delft South Holland, Netherlands