As part of the development of a new and advanced communication system we are seeking a senior network research engineer. The ideal candidate will analyze, architect and prototype an agile IP-based communication stack adapted to LEO networks. The candidate will design the architecture and drive prototyping upper-layer software and firmware interfacing with Spire’s proprietary lower-layer RF communication stack (building upon industry standards such as CCSDS TM/TC and ETSI DVB-S2).
Key Responsibilities
- Study, design, implement, and optimize IP-based networking protocol and communications
- Provide guidance for the upper-layer development using minimalist solutions whenever suitable (TUN, TAP, etc).
- Architect and implement L3-L5 layers for next-generation in association with standardized simplex or, more generally, duplex links (ETSI/CCSDS standard families).
- Define QoS and services (low-latency, high capacity) to manage routing and traffic prioritization, ensure efficient resource allocation, congestion control.
- Perform system level simulations (NS-3 or similar) and profile system performance.
- Accelerate time-to-market by leveraging, re‑using and configuring existing opensource tools and software solutions over re‑creating proven software.
- Lead the development, implementation and deployment of network architectures with an emphasis on operational efficiency and health monitoring
- Monitor network layer behavior including IP packet processing and TT&TC data on specific channels, addressing and routing to ensure performance stability and level in accordance with system level requirements.
- Monitor transport layer behavior including connection metrics, datagram metrics, throughput, latency, errors, and port usage.
- Develop and maintain Linux kernel network adapters
- Actively participate in cross-functional team meetings, collaborating with other departments to ensure cohesive communication and problem-solving approaches.
- Configure system level networking, QoS and traffic prioritization (interference management, optimal bandwidth allocation, concurrent customer management and resource allocation) with additional features such as scheduling, timestamping, TUN client adaptation or telemetry handling.
- Collaborate closely with the L1-L2 team as well as with the FPGA engineers, contributing to seamless integration across all communication layers and cross-layer optimization.
- Actively participate in cross-functional team meetings, adopt problem-solving approaches.
Qualifications / Experience
- MS or PhD in Electrical Engineering, Computer and Communication Sciences, Communication Systems, Data Processing and Machine Learning, Applied Mathematics, or related field is preferred. Equivalent experience will be considered.
- 3-10 years of experience in communication networks, with a focus on satellite or wireless telecommunications systems.
- Solid understanding of communication networks, L3-L4 protocols and information sciences.
- Hands‑on expert level knowledge of IP-based (TCP/UDP) networks and TUN abstraction, including timestamping, encryption, etc.
- Proficiency in C/C++, Linux Kernel, and Linux system‑level programming.
Desired Skills
- Familiarity with L1-L2 protocols to support interfacing upper-layers. Knowledge of GSE-DVB, DVB‑S2(X) and related ETSI protocols, TC/TM and related AOS COP-1, CFDP, SCPS CCSDS protocols, QUIC protocol, Space Packet protocol.
- Knowledge of embedded system development (Xilinx FPGA, DMA, ARM architecture, PS/PL).
- Working experience with Rust/Python as well as SIMD instructions.
- Flexibility and a proactive, collaborative approach, with the ability to thrive in a fast‑paced environment. A positive attitude, adaptability, and openness to learning new technologies and interacting with new people. Ability to work with external partners or COTS equipment.
About the Role
As a Communication Systems Network Research Engineer at Spire, you will help shape a cutting‑edge network infrastructure for our expanding satellite constellation. In this role, you will define, prototype, design, and implement systems and software that optimize data flow across our satellite network. Working alongside experts in mission operations, hardware, and software, you will contribute to pioneering new capabilities that push the boundaries of satellite technology and space‑based networking.
Spire operates a hybrid work model, and this position will require you to work a minimum of three days per week in the office.
Access to US export‑controlled software and/or technology may be required for this role. If needed, Spire will arrange the necessary licenses—this is not something candidates need to have before applying.
Global Perks