Field Service Engineer

Luxquanta; Barcelona; On-site; EUR 42,000 - 60,000; Full time

Benefits offered by this job

Growth opportunities

Barcelona-based location

Job summary

LuxQuanta is seeking a Field Service Engineer to drive end-to-end deployment and onboarding of quantum security systems at customer sites. You will own installation, SAT, and hands-on commissioning, interfacing with international teams and customers to ensure flawless deployments.

You will base in Barcelona, Spain, with travel up to 75% to customer premises and abroad, and you will document activities in CRM while contributing to deployment playbooks and manuals with R&D.

Qualifications

• Degree in Telecommunications, Electrical/Electronic Engineering, Computer Science, Physics (photonics), or IT.
• 5–7+ years in customer-facing technical roles, including hands-on installation and commissioning telecom, networking, or optical equipment.
• Fluency (spoken & written) in English and Spanish.
• Travel up to 75% and hold a valid driving licence.

Responsibilities

• End-to-End Onboarding & Deployment: Lead pre-installation planning, site surveys, and readiness requirements (rack space, power, optical infrastructure, and access procedures).
• System Installation & SAT: Install, configure, and test LuxQuanta QKD systems at customer sites in Spain and abroad, validating optical link quality (OTDR, loss budgets) and executing Site Acceptance Tests (SAT).
• Autonomous Troubleshooting: Lead on-site and remote troubleshooting, escalating structured technical feedback to R&D and Support teams to drive issues to closure.
• Customer Advisory & Training: Conduct on-site knowledge transfer for customer operators and serve as a trusted technical voice across technical and management levels.
• Field Feedback & Hand-over: Document all interactions in CRM/ticketing systems, maintain installed-base records, and help improve deployment playbooks and manuals with R&D.

Skills

Networking

Linux

Bash/Python scripting

VLANs

Education

Degree in Telecommunications, Electrical/Electronic Engineering, Computer Science, Physics (photonics), or IT

Tools

OTDR

Power meters

Job description

We are hiring! Join LuxQuanta as a Field Service Engineer

At LuxQuanta, we are pioneering the Quantum Communications industry with quantum physics-based security solutions. As we expand internationally, we're looking for a passionate Field Service Engineer to act as the face of LuxQuanta at customer premises, owning the end-to-end deployment and onboarding journey.

About the Role

As Field Service Engineer, you’ll bridge post-sale customer onboarding, site readiness, installation, and hands-on commissioning. You combine technical depth, strong ownership, and a customer-oriented mindset to ensure flawless deployments, resolve unexpected field issues autonomously, and turn every customer into a reference story. With your true Startup DNA, you bring a pragmatic, highly flexible mindset, ready to step into adjacent operational areas to ensure complete project success.

Main Tasks & Responsibilities

• End-to-End Onboarding & Deployment: Lead pre-installation planning, site surveys, and readiness requirements (rack space, power, optical infrastructure, and access procedures).
• System Installation & SAT: Install, configure, and test LuxQuanta QKD systems at customer sites in Spain and abroad, validating optical link quality (OTDR, loss budgets) and executing Site Acceptance Tests (SAT).
• Autonomous Troubleshooting: Lead on-site and remote troubleshooting, escalating structured technical feedback to R&D and Support teams to drive issues to closure.
• Customer Advisory & Training: Conduct on-site knowledge transfer for customer operators and serve as a trusted technical voice across technical and management levels.
• Field Feedback & Hand-over: Document all interactions in CRM/ticketing systems, maintain installed-base records, and help improve deployment playbooks and manuals with R&D.
• Degree in Telecommunications, Electrical/Electronic Engineering, Computer Science, Physics (photonics), or IT.
• 5–7+ years in customer-facing technical roles, including hands-on experience installing and commissioning telecom, networking, or optical equipment.
• Fluency (spoken & written) is mandatory, as you will interact daily with international technical teams and management at their facilities. Spanish is also required.
• Travel Availability: High availability to travel frequently to customer premises in Spain and internationally (up to 75% of total working time) and valid driving licence.
• Solid foundation in networking (TCP/IP, routing, switching, VLANs), Linux environments (SSH, CLI, scripting with Bash/Python), and fiber-optic handling (connectors, OTDR, power meters).
• Familiarity with network security concepts (PKI, TLS, IPsec, firewalls) and monitoring protocols (SNMP, REST APIs) is highly valued.
• Highly autonomous, cool-tempered under pressure, with a valid driving licence and willingness to travel frequently (up to 75% internationally/nationally).
• Flexible working hours & Barcelona-based location
• Short Fridays in summer & real growth opportunities in a vibrant team

We are committed to building a diverse and inclusive workplace where every voice contributes to solving genuinely hard problems.

Ready to secure the future of communications?