At LuxQuanta , we are pioneering the Quantum Communications industry with quantum physics-based security solutions for major telecom operators globally. As we accelerate our international expansion, we are looking for a high-energy Senior Pre-Sales Engineer to drive technical sales with Tier-1 carriers and wholesale operators.

About the Role

As Senior Pre-Sales Engineer, you’ll bridge customer needs, business goals, and internal technical execution. You are a tech-commercial powerhouse who can spark interest, design complex optical network solutions, and close B2B deals while coordinating R&D;, Product, and Operations.

With your true Startup DNA, you bring a hands-on, highly flexible mindset, ready to step into adjacent areas whenever needed to ensure smooth project success.

Main Tasks & Responsibilities

- International Presales Leadership: Drive technical presales, solution architecture, and RFP/RFI responses for international carriers and wholesale operators.
- Global Client Engagement: Lead technical pitch sessions, product demonstrations, and PoCs with C-level stakeholders and network directors worldwide.
- Optical Network Architecture: Design tailored quantum-encrypted optical proposals over existing fiber networks (DWDM, OTN, ROADM).




- Cross-Functional Alignment: Work hand-in-hand with internal R&D;, Product, and Sales teams to deliver winning technical proposals.
- Field Support & Travel: Act as our trusted technical advisor on-site with international clients and industry congresses.
- Degree in Telecommunications, Electrical Engineering, or related discipline.
- 7–10+ years of experience as a Pre-Sales Engineer, Solution Architect, or Technical Account Manager in B2B Telecoms.
- Solid technical foundation in Optical Transport, DWDM, OTN, ROADM, and Fiber Optics .
- Strong track record working with Carriers, Operators, Wholesale, or Hyperscalers .
- Fluent in both English AND German (C1/Negotiation level is required for both languages)
- Willingness to travel internationally for key client engagements.
- Flexibility: 100% Remote position (with travel as required by clients/events).
- Perks & Culture: adaptable working hours, and real growth opportunities in a pioneering DeepTech scale-up.

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

#J-18808-Ljbffr

📌 Senior Pre-sales engineer (Barcelona)
🏢 LuxQuanta
📍 Barcelona