Senior 5G RAN Software Architect

Job Description

At Capgemini Engineering, the world leader in engineering services, we bring together a global team of engineers, scientists, and architects to help the world’s most innovative companies unleash their potential. From autonomous cars to life-saving robots, our digital and software technology experts think outside the box as they provide unique R&D and engineering services across all industries. Join us for a career full of opportunities. Where you can make a difference. Where no two days are the same. 

YOUR ROLE

You will be contributing to product development, maintenance and delivery of products including HLD, LLD, development and verification of 5G NR Protocol Software.
Analyze 3GPP features for development for different sub systems and testing of 5G NR features.
Provide guidance to teams regarding intricate design issues.
Focus to continuously improve system performance with quality deliverables.
Design, validate, and implement 5G architecture and next-gen technologies (e.g., Carrier Aggregation (CA), Network Slicing, Scheduler).
Collaborate with cross-functional teams to integrate new features and technologies. 
Drive innovation by exploring new programming paradigms and software architectures. 
Ensure the reliability and scalability of our systems through robust testing and documentation. 
Develop architectural standards, best practices, and guidelines to ensure consistency and quality across projects.
Work closely with product management teams to define roadmap priorities based on customer requirements and market trends.

YOUR PROFILE

Min 10 years in RAN design, optimization, and troubleshooting, with at least 5 years of experience in 5G/LTE technologies.
Strong understanding of 4G LTE, 5G NR, including radio interface protocols, PHY/MAC layers, and eNB/gNB configurations.
Hands on programming experience using C, C++, Linux (both asynchronous and synchronous multithreaded code), Windows, Performance Optimization. 
Must have experience in debugging complex gNodeB issues, log file analysis etc.
Familiar with any of these feature s layer/sublayer MAC, RLC, PDCP, Schedular, Power Control, Link Adaptation, GTP-C, GTP-U.
Familiarity with CI, Jenkins and GIT. 
A problem-solver mindset with a strong analytical approach. 
Excellent communication skills and the ability to work in international team environment

WHAT YOU’LL LOVE ABOUT WORKING HERE

Join a multicultural and inclusive team environment. 

Enjoy a supportive atmosphere promoting work life balance. 

Hybrid work. 

Your career growth is central to our mission. Our array of career growth programs and diverse professionals are crafted to support you in exploring a world of opportunities. 

Access valuable training and certifications in cutting edge technologies. 

Engage in exciting national and international projects. 

Health and life insurance. 

Referral program with bonuses for talent recommendations. 

Great office locations. 

ABOUT CAPGEMINI

Capgemini is an AI-powered global business and technology transformation partner, delivering tangible business value. We imagine the future of organizations and make it real with AI, technology, and people. With our strong heritage of nearly 60 years, we are a responsible and diverse group of 420,000 team members in more than 50 countries. We deliver end-to-end services and solutions with our deep industry expertise and strong partner ecosystem, leveraging our capabilities across strategy, technology, design, engineering and business operations. 

Ref. code:  515125

Posted on:  8 Jul 2026

Experience Level:  Experienced Professionals

Contract Type:  Fixed Term Contract

Location: 

Lisboa, PT

Brand:  Capgemini Engineering

Professional Community:  Products & Systems Engineering

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