Leo Satellite Air Interface Architect

Aim high, go beyond!At Open Cosmos we are solving the world’s biggest challenges from space, providing businesses, governments and researchers access to more readily available information than ever beforeObtenga más información sobre las tareas generales relacionadas con esta oportunidad a continuación, así como sobre las habilidades requeridas.- ready for the challenge?Then read on…The Satcom team is responsible for the design, delivery and performance of Open Cosmos’ satellite communications services, spanning the space segment, ground infrastructure and global connectivity.As our Satcom capability continues to grow, we’re now looking for an Air Interface Architect to define and govern the end-to-end PHY and MAC layer architecture underpinning our LEO communication system, shaping how high-performance, scalable connectivity is delivered across the constellation.What will you be doing?Defining the end-to-end L1/L2 architecture for satellite communication systems aligned to 3GPP NR-NTN and DVB-S2X standardsTranslating LEO dynamics including Doppler effects, latency, beam movement, and visibility constraints into air interface requirementsDriving waveform, numerology, frame structure, and resource allocation design for high spectral efficiency and throughputDefining coding, modulation, and link adaptation strategies across varying link and environmental conditionsArchitecting MAC layer protocols including scheduling, HARQ/ARQ, multiplexing, and resource management mechanismsDefining mobility and handover frameworks across satellites, gateways, and user terminalsSpecifying synchronisation mechanisms including timing advance and frequency pre-compensation strategiesSupporting integration between the air interface and core network functions for NTN connectivity and mobility managementLeading system-level and link-level modelling and simulation activities to validate performance and optimise design decisionsDefining modem architecture and functional partitioning across FPGA/ASIC and software layers to support multi-waveform operationContributing to future roadmap activities aligned with evolving 3GPP NTN and satellite communication standardsWhat You’ll bringDeep understanding of wireless communication systems and PHY/MAC layer architecture principlesStrong knowledge of 3GPP New Radio NTN standards and familiarity with DVB-S2XUnderstanding of waveform design, numerology, frame structures, and resource allocation mechanismsKnowledge of channel coding and modulation techniques including LDPC, Polar, BCH, and Adaptive Coding and Modulation (ACM)Strong understanding of link adaptation, CSI-driven optimisation, and power control strategiesKnowledge of MAC layer protocols including scheduling, HARQ/ARQ, and resource multiplexing in high-latency environmentsUnderstanding of mobility management and synchronisation within highly dynamic communication systemsCapability to translate orbital dynamics and LEO constraints into robust air interface specificationsProficiency in system-level and link-level modelling and simulation for performance validation and optimisationUnderstanding of modem architecture and partitioning between FPGA/ASIC and software-based implementationsA systems-thinking mindset with the ability to balance performance, scalability, compliance, and real-world implementation considerationsThis role will be based in any of our locations.To apply, you must have the legal right to work in your chosen location.When applying, please submit your CV in English.xqysrnh Why Open Cosmos?Work at the cutting edge of space technology with customers around the globeA mission-driven company making space accessible to help solve real-world challengesA diverse, ambitious, and supportive team

performance and optimise design decisionsDefining modem architecture and functional partitioning across FPGA/ASIC and software layers to support multi-waveform operationContributing to future roadmap activities aligned with evolving 3GPP NTN and satellite communication standardsWhat You’ll bringDeep understanding of wireless communication systems and PHY/MAC layer architecture principlesStrong knowledge of 3GPP New Radio NTN standards and familiarity with DVB-S2XUnderstanding of waveform design, numerology, frame structures, and resource allocation mechanismsKnowledge of channel coding and modulation techniques including LDPC, Polar, BCH, and Adaptive Coding and Modulation (ACM)Strong understanding of link adaptation, CSI-driven optimisation, and power control strategiesKnowledge of MAC layer protocols including scheduling, HARQ/ARQ, and resource multiplexing in high-latency environmentsUnderstanding of mobility management and synchronisation within highly dynamic communication systemsCapability to translate orbital dynamics and LEO constraints into robust air interface specificationsProficiency in system-level and link-level modelling and simulation for performance validation and optimisationUnderstanding of modem architecture and partitioning between FPGA/ASIC and software-based implementationsA systems-thinking mindset with the ability to balance performance, scalability, compliance, and real-world implementation considerationsThis role will be based in any of our locations.To apply, you must have the legal right to work in your chosen location.

Barcelona, España

Aim high, go beyond! At Open Cosmos we are solving the world’s biggest challenges from space, providing businesses, governments and researchers access to more readily available information than ever beforeObtenga más información sobre las tareas generales relacionadas con esta oportunidad a continuación, así como sobre las habilidades requeridas.

• ready for the challenge?, Work at the cutting edge of space technology with customers around the globeA mission-driven company making space accessible to help solve real-world challengesA diverse, ambitious, and supportive team