? 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.;

? Qualifications & Skills

- 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.
- Languages: Good level of English (fluency for clear written and spoken technical communication with international clients) and Spanish.
- 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).

? Compensation & Benefits

- Competitive compesation
- Private health insurance & ticket guardería
- Versátil 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? Apply today or drop me a DM! ?

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📌 Field Service Engineer (Barcelona)
🏢 LuxQuanta
📍 Barcelona