Senior/Lead C++ Software Engineer IRC285738

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

Key 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

Culture of caring. At GlobalLogic, we prioritize a culture of caring. Across every region and department, at every level, we consistently put people first. From day one, you’ll experience an inclusive culture of acceptance and belonging, where you’ll have the chance to build meaningful connections with collaborative teammates, supportive managers, and compassionate leaders. 

Learning and development. We are committed to your continuous learning and development. You’ll learn and grow daily in an environment with many opportunities to try new things, sharpen your skills, and advance your career at GlobalLogic. With our Career Navigator tool as just one example, GlobalLogic offers a rich array of programs, training curricula, and hands-on opportunities to grow personally and professionally.

Interesting & meaningful work. GlobalLogic is known for engineering impact for and with clients around the world. As part of our team, you’ll have the chance to work on projects that matter. Each is a unique opportunity to engage your curiosity and creative problem-solving skills as you help clients reimagine what’s possible and bring new solutions to market. In the process, you’ll have the privilege of working on some of the most cutting-edge and impactful solutions shaping the world today.

Balance and flexibility. We believe in the importance of balance and flexibility. With many functional career areas, roles, and work arrangements, you can explore ways of achieving the perfect balance between your work and life. Your life extends beyond the office, and we always do our best to help you integrate and balance the best of work and life, having fun along the way!

High-trust organization. We are a high-trust organization where integrity is key. By joining GlobalLogic, you’re placing your trust in a safe, reliable, and ethical global company. Integrity and trust are a cornerstone of our value proposition to our employees and clients. You will find truthfulness, candor, and integrity in everything we do.

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.