Description
Broadband team works on 2nd generations of Harmonic (NASDAQ:HLIT) Cable Access products: actively developing the industry’s first software-based CCAP solution (“Cable OS”) and cloud native CMTS.
These solutions allow to cable operator companies to deliver the IP-based data, video, and voice services to millions of customers. Focus is given to CableOS which will allow to get rid of the existing HW equipment and to migrate to the cloud, saving customers the enormous expenses for the support of HW network equipment.
The system is based on microservice architecture and is running on the general purpose CPUs. It doesn’t require using ASICs and make possible to run the SW both on the bare metal servers as well as on the private cloud infostructure. CableOS is a pioneer in DOCSIS software defined networking (SDN) with all the benefits it gives to the service providers.
GlobalLogic team is involved in development, manual and automated testing, as well as in solution integration at customers’ headend and further technical support 24/7 with providing professional services for Customers.
To learn more – please visit
HTTPS://WWW.HARMONICINC.COM/BROADBAND/
HTTPS://WWW.GLOBALLOGIC.COM/UA/HARMONIC-AND-GLOBALLOGIC/
Requirements
We are looking for an experienced C++ software engineer to join the team, responsible for critical control-plane services of modern CMTS (Cable Modem Termination Systems).
This role is focused on design, implementation, and ownership of timing- and synchronization-related services, including Cable Modem periodic ranging. While prior DOCSIS or CMTS experience is not required, the ideal candidate has worked on similar problem domains such as real-time control systems, device coordination, timing/synchronization mechanisms, or low-level networking services.
You will take ownership of complex system components, collaborate with cross-functional teams, and grow into a domain expert within a highly specialized networking environment
Required experience & skills
5+ years of professional C++ development (C++17 or newer preferred)
Strong understanding of:
multithreading and concurrency
performance optimization and low-latency systems
Solid experience with object-oriented design and modern C++ patterns
Development experience in Linux / Unix-like environments
Hands-on experience with STL and Boost
Ability to reason about stateful systems, timing, and control logic
Systematic approach to problem solving and debugging complex distributed behavior
Strong communication skills and ability to collaborate across teams
Relevant background
Experience in any of the following areas is considered highly relevant, even without DOCSIS knowledge:
Real-time or near-real-time systems
Device coordination or control-plane services
Timing, synchronization, or ranging-like mechanisms
Networking systems interacting closely with Layer 1 / Layer 2 concepts
Embedded-adjacent or hardware-aware software systems
Telecom, networking equipment, or large-scale infrastructure software
DOCSIS, CMTS, and Ranging specifics will be learned on the job.
Nice-to-have skills
Understanding of networking fundamentals (OSI model, Layers 1–4)
Experience with distributed systems or high-performance networking software
Familiarity with Thrift or similar RPC/IDL frameworks
Experience using Python for test automation or tooling
Exposure to algorithmic modeling, data analysis, or optimization (e.g., Julia, MATLAB-like tools)
Interest in RF-aware or signal-adjacent problem domains (no PHY expertise required)
Tech stack
C++17 / C++20
STL, Boost
Thrift
Python 3 (test suites, tooling)
Julia (algorithmic modeling and analysis)
Linux userspace services
Job responsibilities
- Design, implement, and maintain control-plane services for CMTS platforms
- Work on Cable Modem periodic ranging functionality:
device timing and synchronization
periodic state evaluation and correction
coordination between control logic and large numbers of connected devices - Develop performance-critical, multithreaded C++ components running in Linux userspace
- Ensure correctness, stability, and scalability under high device density and real-time constraints
- Participate in architecture and design discussions (scalability, reliability, fault tolerance)
- Collaborate closely with distributed international teams (system, PHY/RF, automation)
- Contribute to code reviews, debugging of complex production issues, and long-term maintainability
What we offer
Empowering Projects: With 500+ clients spanning diverse industries and domains, we provide an exciting opportunity to contribute to groundbreaking projects that leverage cutting-edge technologies. As a team, we engineer digital products that positively impact people’s lives.
Empowering Growth: We foster a culture of continuous learning and professional development. Our dedication is to provide timely and comprehensive assistance for every consultant through our dedicated Learning & Development team, ensuring their continuous growth and success.
DE&I Matters: At GlobalLogic, we deeply value and embrace diversity. We are dedicated to providing equal opportunities for all individuals, fostering an inclusive and empowering work environment.
Career Development: Our corporate culture places a strong emphasis on career development, offering abundant opportunities for growth. Regular interactions with our teams ensure their engagement, motivation, and recognition. We empower our team members to pursue their career goals with confidence and enthusiasm.
Comprehensive Benefits: In addition to equitable compensation, we provide a comprehensive benefits package that prioritizes the overall well-being of our consultants. We genuinely care about their health and strive to create a positive work environment.
Flexible Opportunities: At GlobalLogic, we prioritize work-life balance by offering flexible opportunities tailored to your lifestyle. Explore relocation and rotation options for diverse cultural and professional experiences in different countries with our company.
About GlobalLogic
GlobalLogic, a Hitachi Group Company, is a trusted digital engineering partner to the world’s largest and most forward-thinking companies. Since 2000, we’ve been at the forefront of the digital revolution – helping create some of the most innovative and widely used digital products and experiences. Today we continue to collaborate with clients in transforming businesses and redefining industries through intelligent products, platforms, and services.
