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ARQUIMEA , we are a technology company operating globally and providing innovate solutions and products in highly demanding sectors. Our areas of activity are Aerospace, Defense & Security, Big Science, Biotechnology and Fintech. Main function and scope: We are seeking a Space Systems Engineer to support the development of advanced space systems, with a strong focus on avionics, payloads, communications, embedded systems, and end-to-end requirements decomposition. Core functions: · Decompose mission and system-level needs into clear, traceable, and verifiable requirements for avionics, payloads, HW, FW, RF, SW, and EGSE. · Define and manage system, subsystem, unit, and interface requirements across the full project lifecycle. · Support avionics and payload architecture definition, including on-board processing, data handling, RF chains, embedded electronics, and flight software interfaces. · Develop and maintain ICDs, requirements traceability matrices, verification matrices, technical budgets, and review documentation. · Coordinate with HW, FW, SW, RF, mechanical, AIT, quality, and project teams to ensure coherent system design and implementation. · Define verification logic, test methods, success criteria, and evidence needed to close requirements. · Support integration, functional testing, environmental testing, EMC/RF testing, and end-to-end payload validation. · Review design outputs, test results, anomalies, non-conformances, and deviations against system requirements. · Identify and manage technical risks, assumptions, dependencies, trade-offs, and open points. · Support customer reviews, subcontractor coordination, technical proposals, and compliance matrices. Required experience and candidate profile: -Degree in Aerospace Engineering, Telecommunications Engineering, Electrical Engineering, Electronics Engineering, Computer Engineering, Physics, or a related technical field. -+5 years of experience in space systems engineering Technical Requirements: Training / specific knowledge required in: · Experience in systems engineering for complex technical products, preferably in space, aerospace, defence, telecommunications, or high-reliability electronics sectors. · Strong understanding of requirements engineering, system architecture, interfaces, and verification processes. · Familiarity with avionics, payload electronics, embedded systems, RF systems, or spacecraft subsystems. · Ability to work across multiple domains, including hardware, firmware, RF, software, electrical interfaces, and test systems. · Experience preparing or reviewing technical documentation Nice-to-have training / specific knowledge: · Experience with space project lifecycle phases, including concept, design, development, qualification, acceptance, launch, and operations. · Knowledge of ECSS standards or equivalent aerospace development standards. · Experience with requirements management tools such as DOORS, Jama, Polarion, Valispace, Codebeamer, or similar. · Experience with MBSE tools or methodologies, such as Capella, Cameo, SysML, or Arcadia. · Familiarity with payload or avionics technologies such as: -OBCs and data handling systems -FPGA-based processing -High-speed digital interfaces -ADCs, DACs, clocks, timing, and synchronization -RF transceivers, antennas, modems, and link budgets -Embedded Linux, RTOS, bare-metal firmware, or flight software -SpaceWire, CAN, UART, SPI, I2C, Ethernet, LVDS, SerDes, CCSDS, or similar protocols · Experience supporting AIT campaigns, environmental testing, EMC testing, or RF testing. · Knowledge of FMECA, FDIR, reliability, safety, radiation, derating, and parts selection for space applications. The position is located at our headquarters in Madrid , at Calle Serrano Galvache , 56. We're looking for curious, creative, tenacious and collaborative pe