Senior Quantum Optics Engineer

SpeQtral; Singapore; Hybrid; SGD 180,000 - 260,000; Full time

Benefits offered by this job

WFH flexibility

Paid leave entitlement

Medical and dental insurance

Career progression opportunities

Job summary

SpeQtral is seeking a Senior Quantum Optics Engineer in Singapore to lead the design and development of quantum and optics hardware for space-based and terrestrial networks. You will work with scientists and engineers to tackle practical challenges across environments and contribute to quantum-secure communications initiatives.

The role emphasizes hands-on experimental work, leadership across complex projects, and translating research into deployable products for commercial and partner use.

Qualifications

• PhD in Physics or Quantum Optics with 2 years of experience.
• Postdoctoral or industry experience in quantum optics, photonics, quantum communications, or related fields.
• Strong record of experimental research with publications, patents or conference presentations.
• Ability to lead complex technical work from concept to prototyping and validation.
• Interest in translating deep-tech research into deployable products.

Responsibilities

• Oversee and perform design and development of quantum and optics hardware.
• Collaborate with a team of experts to implement state-of-the-art R&D solutions.
• Present technical content to internal teams and customers/partners.
• Assist with creating commercial and research proposals for SpeQtral and partners.
• Other related functions as assigned.

Skills

PhD required

Postdoctoral/industry experience

Experimental research

Technical leadership

Mentoring

Education

PhD in Physics or Quantum Optics

Tools

Zemax

QKD software

Data analysis

Job description

SpeQtral islooking for a highly motivated Senior Quantum Optics Engineer to join our teamof quantum technology pioneers in Singapore. We are commercialisingquantum-secure communications to prepare the world for the quantum future,developing advanced solutions for both space-based and terrestrial networks.Our work spans quantum space systems, terrestrial quantum key distribution,entanglement technologies and high-security communications. As part of ourmission to transform the world’s networks, we are building scalable quantumcommunication capabilities that enable the secure delivery of encryption keysacross local, regional and global networks.

At SpeQtral,you will work directly with scientists and engineers to solve the practicalchallenges of quantum communication in terrestrial and space environments.

Qualification:

• PhD in Physics or Quantum Optics with 2 years of experience
• Substantial postdoctoral or industry experience in quantum optics, quantum photonics, quantum communications, photonics, laser systems or optical instrumentation
• Strong record of experimental research supported by high-quality publications, patents and/or conference presentations in a relevant field
• Demonstrated ability to lead complex technical work from concept and modelling through prototyping, integration, testing and validation
• Strong technical judgement, mentoring capability and an interest in translating deep-tech research into deployable products

Responsibilities:

• Oversee and perform the design and development of quantum and optics hardware
• Work with a team of domain and technology experts implementing solutions based on state-of-the-art and/or cutting-edge R&D
• Effectively present technical content internally as well as to customers or partners
• Assist with creating commercial and research proposals to support work done at SpeQtral and with partners of SpeQtral
• Other related functions as assigned

Technical skills:

• Quantum optics: Experience with optical systems that operate in the single photon regime. Familiarity with measurements and analysis of quantum states, specifically for polarization and phase encoding, including laser sources and electro-optic modulators
• Examples: quantum state tomography, polarization entangled photon sources, weak coherent pulsed sources, single photon sources.
• Single-photon detectors (APDs/SPADs/SNSPDs): Hands-on experience with operation and characterisation of single photon detection systems, including quenching methods, optical coupling, detector-efficiency optimisation, timing-jitter measurement, dark-count and after-pulse analysis and optimisation, and readout electronics.
• Integrated quantum photonics: Strong understanding of integrated photonic platforms for quantum-state generation, manipulation and detection.
• Experience in Thin-film lithium niobate photonics; Experience designing, modelling or characterising thin-film lithium niobate photonic devices and circuits, including waveguides, electro-optic modulators, laser source and detectors, hybrid approaches and fibre-to-chip coupling.
• Free-space optical communications: Experience with transmitting photons over long distances through free space optical channels.
• Examples: LIDAR, gaussian beam propagation, optical communications.
• Quantum key distribution: Experience with quantum key distribution systems, free-space or fibre based.

Bonus technical skills – experience in any of the following topics is advantageous

• Optical design software (Zemax)
• Quantum key distribution software
• Data analysis
• Quantum communication theory, e.g., QKD protocols
• Optical communications
• Control theory

SpeQtral provides our employees with:

• Flexibility of working from home
• Attractive leave entitlement
• Comprehensive medical and dental insurance
• Career progression opportunities

About SpeQtral

SpeQtral is a global quantum technologies company on amission to transform the world’s networks for the quantum revolution. Poweredby technologies developed at the Centre for Quantum Technologies in Singapore,SpeQtral provides specialized solutions for quantum security to clientsconcerned about the security of their communications networks andinfrastructure. SpeQtral’s core expertise lies in using a space-based quantumplatform to establish long distance quantum networks with a global reach.

Speqtral | Senior Quantum Optics Engineer

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