Quantum Optics Engineer

Falqon® Systems; Delft; On-site; EUR 70,000 - 100,000; Full time

Benefits offered by this job

33 days leave

Travel & expense allowance

Retirement plan

Team outings

Open culture

Job summary

Falqon Systems in Delft seeks a Quantum Optics Engineer to join our customer fulfillment team, producing quantum devices and supporting research and development for an international customer base.

You will work with hardware and software engineers, travel for installations, characterize optical components, and help extend tooling and processes while communicating clearly with customers.

Qualifications

• MSc degree in a related field or equivalent practical experience.
• Strong problem-solving skills and attention to detail.
• Clear communication with technical and non-technical stakeholders.
• Hands-on experience with mechanical assembly and optical systems.
• Experience calibrating optical setups and components.
• Familiarity with basic Test & Measurement instruments (oscilloscopes, meters).
• Experience with Python and software engineering practices (Git, documentation).
• Experience with customer-facing activities and field service is valued.

Responsibilities

• Produce quantum devices and bring them to a functional state ready for shipping.
• Characterize optical components and integrate them into complex setups with full system characterization.
• Develop scripts for long-term measurement setups to run automatically.
• Learn assembly, characterization steps, and configuration possibilities; own process improvements.
• Travel for on-site installations, deployments, and training at customer sites including data centers and telecom facilities.
• Assist with diagnosing field issues and potentially service equipment for customers.
• Collaborate with customers and internal teams to support customer use cases and communication.

Skills

Problem-solving

Communication skills

Python

Mechanical assembly

System calibration

Hardware schematics

Electronic understanding

Customer-facing communication

Independent / team player

Travel readiness

Education

MSc in physics / electrical engineering / photonics

Tools

Oscilloscopes

Power meters

Test & Measurement instruments

EOMs & polarization optics

Single-photon detectors

Git

Job description

We are looking for a new team member, a Quantum Optics Engineer, to join our customer fulfillment team to focus on producing our Quantum optics/Quantum network devices for our growing international customer base and a variety of research and development projects.Electrical and Software engineers are on board to support you and use your feedback to make the tools you need to get the job done.

Are you passionate about quantum optics, photonics, and technology, and do you want to contribute to new ground-breaking tech?Do you work independently, love working hands-on, and adapt easily to rapidly changing priorities?Above all, are you a team player and excited to work in a mixed team of hardware engineers, software engineers, and scientists?

Key Responsibilities

You will be responsible for producing our quantum devices, which include not just assembling the devices but bringing the devices to a fully functional state, ready to ship to the customer.You’ll be characterizing individual optical components – often at the quantum level – and integrating them into complex setups, requiring full system characterization.Think of basic scripting for running long-term measurement setups (programmatically and automatically). You’ll be responsible for learning the assembly process, characterization steps, and configuration possibilities.Once you’ve built expertise, you’ll have some ownership of improving these processes.

Your role also entails on-site customer work – i.e., travel. Once comfortable with all the complexities of quantum network devices, you’ll be responsible for on-site installations and the deployment and configuration of the quantum network. These locations may include secure data centers, backbone telecom facilities, government installations, etc.

As our quantum devices are installed around the world, you’ll use your particular expertise to assist the team in diagnostics of issues and potentially field servicing of technical equipment.Be ready to travel – maybe to the far corners of the world – for field service visits, installations, and training.

Your role also entails supporting existing customers. Being able to collaborate with customers' staff and support them in their use cases is important.That means being comfortable communicating with both technical and non-technical stakeholders.You need to be comfortable with customer-facing activities and communicate in a professional manner.

Your Profile

• An MSc degree in physics, electrical engineering, photonics, or a related field (or equivalent practical experience)
• A valid Driving license
• Strong problem-solving skills and attention to detail
• Clear communication skills, with the ability to support both technical and non-technical stakeholders
• Hands-on experience in mechanical assembly
• Hands-on experience with optical systems, including system calibration
• Hands-on experience with basic Test & Measurement instruments (oscilloscopes, power meters, etc.)
• Expertise in using and characterizing EOMs, polarization optics, and single-photon detectors
• An understanding of electronics is required to effectively work together with electrical engineers and programmers.
• Comfortable working with hardware, schematics, and system documentation
• Experience with Python
• Experience with software engineering best practices (version control (git), documentation, code reviews, etc.)
• Experience with simple closed-cycle cryogenic systems would be valuable
• Experience communicating with customers orin customer-facing activities would be valuable

We expect that the successful applicant will not satisfy all the above points, but has expertise in key areas and significant knowledge in most areas.

Who is Falqon Systems

Falqon Systems is on a mission to enable quantum connectivity by developing the hardware and software needed for the quantum Internet. We design, build, test, and produce systems for the next generation of secure communication. Our work accelerates quantum Internet adoption by building networking systems, supporting network infrastructure, and collaborating with industry and academia.

Our devices are the result of advancements across multiple disciplines—from optical systems and high-end hardware platforms to robust embedded software and innovative networking protocols. This means our team is a vibrant mix of experts with backgrounds in physics, engineering, software development, academic research, and real-world industry experience.

Over the past year, we’ve experienced remarkable growth, scaling from 22 to 30 team members, and we’re on track to reach 40 by the end of 2026. With a clear vision for the future and ongoing momentum, Falqon Systems is on a continuous growth trajectory, bringing cutting-edge quantum solutions to commercial, industry, and government partners

We’re motivated by solving tough challenges, and we’re proud to be working on projects that make a real impact. Our dreams are ambitious, and we’re excited to welcome talented, curious, and driven teammates to help us make quantum networking a reality.

What Falqon Systems Offers

• Opportunity to be part of the quantum revolution in a quantum company and to build the next generation of digital infrastructure. Join us to create the Quantum Future!
• Starting Date: As soon as available
• Full-Time Employment
• Competitive salary package aligned with your skills and experience
• 33 days annual leave and holiday allowance
• Travel and Work expenses allowance
• Company-sponsored retirement plan
• Team outings and social activities organized by the company
• A young, energetic, fun team of highly skilled physicists, engineers, and industry experts, with an open working culture
• An international team that places a value on equality and diversity, no matter the race, religion, background, gender, or any of the differences that give each of us that unique perspective to strengthen the team
• Plenty of room for new initiatives and new ideas, and a chance to develop yourself at the cutting edge of technology