Senior Software Engineer - – C++ | Objective-C | VoIP & Collaboration Platforms | macOS/iOS | Mobile & Desktop Applications (G10) (8 - 12 Years)

Meet the Team

Cisco's Collaboration Business Unit is redefining how people connect and collaborate through industry-leading communication solutions. Our engineering teams build highly scalable calling platforms and collaboration technologies that power millions of users worldwide through Webex and Cisco Collaboration products.

You will join a global team of engineers responsible for designing and delivering next-generation calling experiences. Working closely with architects, product managers, quality engineers, and platform teams, you'll help shape both technical strategy and execution while leveraging AI-assisted development to accelerate innovation and engineering excellence.

Your Impact

As a Senior Software Engineer / Technical Lead, you will drive the design and development of critical calling and communication capabilities across Cisco's collaboration portfolio.

You will lead complex technical initiatives, influence architectural decisions, mentor engineers, and champion modern AI-assisted development practices. This role provides an opportunity to solve large-scale engineering challenges while shaping the future of real-time communication technologies.

Key Responsibilities

• Lead the design, development, and optimization of large-scale calling and collaboration applications using C++ and Objective-C.
• Drive technical architecture discussions and contribute to long-term platform strategy.
• Leverage AI-assisted development tools to improve engineering productivity, software quality, and development efficiency.
• Collaborate with Product Management, Architecture, QA, SRE, Support, and global engineering teams to deliver robust communication solutions.
• Lead design reviews, code reviews, technical investigations, and root cause analyses for complex system issues.
• Mentor junior and mid-level engineers and promote engineering best practices across the team.
• Drive improvements in performance, scalability, reliability, observability, and maintainability.
• Champion CI/CD, automated testing, developer productivity, and operational excellence initiatives.

Minimum Qualifications

• Bachelor's degree in Computer Science, Engineering, or a related technical field.
• 8+ years of professional software development experience with expert-level C++ development skills.
• Strong experience building commercial software applications using C++ and Objective-C.
• Experience designing distributed systems, communication platforms, or large-scale software applications.
• Experience utilizing AI-assisted coding tools to improve development efficiency and engineering workflows.

Preferred Qualifications

• Experience building real-time communication, collaboration, VoIP, or calling platforms.
• Strong knowledge of SIP, XMPP, WebSockets, REST APIs, networking fundamentals, and telephony systems.
• Experience with Cocoa Frameworks, Qt Widgets, macOS, and mobile application development.
• Experience leading technical initiatives and mentoring engineers in a fast-paced environment.
• Excellent communication, stakeholder management, and presentation skills with the ability to influence technical decisions across organizations.

Why Cisco? 

At Cisco, we’re revolutionizing how data and infrastructure connect and protect organizations in the AI era – and beyond. We’ve been innovating fearlessly for 40 years to create solutions that power how humans and technology work together across the physical and digital worlds. These solutions provide customers with unparalleled security, visibility, and insights across the entire digital footprint.

Fueled by the depth and breadth of our technology, we experiment and create meaningful solutions. Add to that our worldwide network of doers and experts, and you’ll see that the opportunities to grow and build are limitless. We work as a team, collaborating with empathy to make really big things happen on a global scale. Because our solutions are everywhere, our impact is everywhere. 

We are Cisco, and our power starts with you. 

Disclaimer

To ensure that we hire the best talent in the right way, we follow a strict hiring process and recently, Cisco has been made aware of fraudulent recruiters claiming to be from the company. Please be advised that any communication from Cisco about careers will:

• be in direct response to an application you have submitted through the company career site
• begin with screening or an interview
• originate from a Cisco email address, and
• be conducted across email, phone, or WebEx

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If you are the target of a recruiting scam, consider filing a report with your local law enforcement authorities. Cisco bears no responsibility, and cannot be held liable, for any claims, damages, expenses, or other inconvenience resulting from or in any way connected to recruiting scams.