We are seeking an experienced Firmware Security Engineer with strong expertise in embedded firmware development, security, networking, and Linux-based systems. The ideal candidate will design, develop, test, and integrate secure firmware components for embedded devices while working closely with cross-functional engineering teams.

Experience with C/C++, Python, Embedded Linux, security protocols, networking, debugging tools, and firmware validation is highly preferred. Strong experience in Embedded Firmware Development and Software Engineering. Hands-on experience with C, C++ (11/14), Python, and TCL programming languages.

Strong understanding of firmware architecture, software design patterns, and scalable embedded software design . Hands-on experience with APIs and secure web services . Good knowledge of Assembly (when required), RTOS concepts, and embedded systems development .

Strong experience working in Linux (embedded and development environments), Windows, and macOS .

Experience with Git/GitHub version control systems.

Experience with unit testing frameworks (GTest/GMock) .

Experience using Make, CMake , and Jenkins or similar CI/CD tools . Familiarity with GCC ARM toolchains, package managers (apt, pip), and Docker-based development environments .

Experience implementing TLS/SSL, OpenSSL, PKI, certificate management, and secure communication protocols .

Experience using Wireshark for networking analysis, packet capture,



and protocol debugging. Hands-on experience with Yocto for Embedded Linux image customization and layer integration.

Experience with firmware testing, validation, bug fixing, system integration, and prototype support . Ability to analyze software changes, resolve manufacturing and prototype issues, and collaborate with firmware, software, and hardware engineering teams.

Fluent

English is required; Ascendion is a integral, leading provider of AI-first software engineering services, delivering transformative solutions across North America, APAC, and Europe. We are headquartered in New Jersey. We combine technology and talent to deliver tech debt relief, improve engineering productivity solutions, and accelerate time to value, driving our clients’ digital journeys with efficiency and velocity.

Guided by our “Engineering to the power of AI” [EngineeringAI] methodology, we integrate AI into software engineering, enterprise operations, and talent orchestration, to address critical challenges of trust, speed, and capital. Will get to work on numerous challenging and exciting projects on our various offerings including Salesforce, AI/Data Science, Generative AI/ML, Automation, Cloud Enterprise and Product/Platform Engineering. At Ascendion you have high chances of project extension or redeployment to other clients.

📌 Firmware Engineer (Barcelona)
🏢 Ascendion
📍 Barcelona