Sascha Paez

Sascha Paez

Embedded Software & Testing Engineer

Spacecraft on-board and ground software engineer. I work across ECSS / PUS services, real-time operating systems, and mission operations — from telemetry and telecommands to high-performance ground software.

Work Experience

Embedded Software & Testing Engineer

Expleo Group Apr 2026 — Present · Málaga, Spain
  • ECSS & Packet Utilization Standard (PUS) services development and implementation
  • MISRA-C and RISC-V development
  • RTOS development (RTEMS & FreeRTOS)
  • CANopen, CAN-TS, LVDS and file-system work
  • Subsystem managers, unit and functional testing

Software Developer

University of Cádiz Jul 2025 — Mar 2026 · Cádiz, Spain
  • Ground and operations software development and testing
  • High-performance software development
  • CCSDS & ECSS standards for telecommand, telemetry and operations
  • Leading the operations team and writing operations manuals
  • FLATSAT, full functional and mission testing
  • C / C++ for data processing and spacecraft communications
  • Node, React and Vite for the mission-control front-end

Spacecraft Operations Team Lead

UCAnFly · University of Cádiz Sep 2022 — Apr 2026 · Cádiz, Spain
  • Definition and implementation of telemetry and telecommands
  • Definition of operational procedures and timelines
  • Leading and organising the operations subsystem members
  • PUS services, ECSS and CI/CD
  • High-performance ground software and spacecraft-communications software

Spacecraft On-Board Software Team Lead

UCAnFly · University of Cádiz Jan 2022 — Oct 2022 · Cádiz, Spain
  • Development of test procedures and test reports
  • Maintenance of OBSW documentation relevant to the mission
  • Development and maintenance of the on-board software
  • Leading and organising the subsystem members

Education & Training

Computer Science

Universidad de Cádiz 2019 — 2024

Fly Your Satellite! Programme

University of Cádiz · ESA 2021 — Present

Erasmus — Computer Science

NTNU, Trondheim · Norway 2022

CubeSat Hands-On Training Week

European Space Agency · Belgium 2022

Machine Learning

Stanford University · Coursera 2020

Embedded C Programming Design Patterns

Udemy Certificate

Skills

Embedded C C C++ Python Golang Java SQL (MySQL) Assembly x86 VHDL Arduino Linux Git Vulkan OpenGL RTOS (RTEMS / FreeRTOS) ECSS / PUS CCSDS CI/CD Flight Operations System (FOS)

Languages

  • SpanishNative
  • EnglishB2