Senior .NET Engineer – Embedded Device API

(IDQ) as part of IONQ, is a global leader in quantum-safe communications and quantum detection systems. We provide solutions to protect governments, telecommunication infrastructures, and banking & financial institutions from the “harvest-now, decrypt-later” threat, delivering both terrestrial and space-based quantum-safe networks in live operation globally. Our Quantum Detection Systems push the limits of single-photon detection, powering breakthroughs in quantum communication, sensing, computing, and ultra-sensitive imaging in partnership with top researchers and tech innovators worldwide.

We are seeking a Senior .NET Software Engineer (Embedded Device API) to own a lightweight, secure, and resilient device-side Web API that runs on quantum network nodes. This API enables centralized orchestration services to manage devices remotely, including configuration, monitoring, and operational actions, even under constrained, intermittent, or air-gapped conditions.

• Implement and maintain the embedded device Web API as the primary management interface on the node; ensure compatibility with centralized orchestration services and their end-to-end management workflows.
• Integrate telemetry and eventing (Open Telemetry Collector, Signal
  
  R, MQTT) with robust back pressure and offline-buffering strategies.
• Support multiple management paths (local console, SSH, remote API) with strict authentication/authorization and auditable actions.
• Optimize embedded constraints: low memory/CPU, secure update, deterministic startup/recovery, and safe rollback.
• Collaborate with hardware/firmware and crypto teams to expose device capabilities via stable contracts.

• 8+ years in .NET backend with experience on edge/embedded Linux services or appliance-style products.
• Strong security (TLS/mTLS, cert pinning, secure storage) and defense-in-depth mindset.

• Exposure to SDN concepts
• Familiarity with network management standards (e.g., NETCONF/YANG)
• Knowledge of quantum networking and device-management interfaces

/ IonQ is an equal opportunity employer and considers qualified applicants for employment without regard to race, color, creed, religion, national origin, sex, sexual orientation, gender identity, age, disability, veteran status or any other status protected by law.