Overview Keysight is at the forefront of technology innovation, delivering breakthroughs and trusted insights in electronic design, simulation, prototyping, test, manufacturing, and optimization. Our ~15,000 employees create world-class solutions in communications, 5G, automotive, energy, quantum, aerospace, defense, and semiconductor markets for customers in over 100 countries. Learn more about what we do.

Our award-winning culture embraces a bold vision of where technology can take us and a passion for tackling challenging problems with industry-first solutions. We believe that when people feel a sense of belonging, they can be more creative, innovative, and thrive at all points in their careers.

Keysight is looking for a

Wireless Protocol Software Engineer

with strong

3GPP protocol expertise , focused on

Layer 3 (L3) , to support advanced 5G and

pre‑6G

wireless system development.

You will work

close to standards and real implementations , translating evolving protocol specifications into

scalable and robust software components

that directly impact system behavior and performance.

This role provides deep technical ownership of

L3 protocol stacks

within a





multi‑site international environment .

Responsibilities

Design, develop, integrate, and optimize the L3 protocol stack (RRC)

Support UE emulation

Contribute to 5G standards, following 3GPP evolution

Translate evolving requirements (3GPP releases, operator acceptance needs, O‑RAN priorities) into clear software designs, test workflows, and reusable components

Collaborate with cross‑functional experts (systems, RF, protocol, product, customers/partners) to reproduce field issues, debug complex behaviors, and validate fixes with strong root‑cause discipline

Qualifications

Strong expertise in 3GPP LTE / NR

Focus on L3 protocols (RRC)

C / C++

Multi‑threading and real‑time programming

Software development and debugging

Experience working in a multi‑site environment

Technical communication in English

Preferred Qualifications

Experience with CI/CD, test frameworks, containers, and/or cloud‑based environments

Tools:

Git, Valgrind/Polaris, JIRA, Wireshark

Careers Privacy Statement

Keysight is an Equal Opportunity Employer.

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📌 Wireless Protocol Software Engineer – Layer 3 (RRC) (Madrid)
🏢 Anite
📍 Madrid