Software Engineer

Cisco; Stockholms kommun; On-site; SEK 900,000 - 1,300,000; Full time

Job summary

Cisco Systems, Inc in Stockholm is seeking a software engineer to design, implement, and optimize VoIP audio algorithms within real-time audio pipelines. You will contribute to adaptive jitter buffers, packet loss concealment, and codec integration in production systems, using C/C++ and real-time streaming protocols.

The role emphasizes collaboration, code reviews, and automated workflows in an agile setting. Excellent English communication and a proactive approach to AI safety are expected.

Qualifications

• MSc in Software Engineering or related field.
• Hands-on experience developing VoIP or real-time audio algorithms in production systems.
• Proficiency in C/C++ with strong data structures, algorithms and design patterns.
• Experience with media streaming and real-time protocols.
• Professional English communication skills.

Responsibilities

• Design, implement, and optimize VoIP audio algorithms per product requirements.
• Perform peer code reviews and automate development workflows and quality gates.
• Participate in agile ceremonies including daily stand-ups, planning, releases, and retrospectives.
• Collaborate across teams to mentor and share knowledge.

Skills

VoIP/Real-time Audio

C/C++ proficiency

Media streaming protocols

English communication

AI responsibly usage

AI code review

Performance optimization

Close-to-real-time systems

Team collaboration

Education

MSc in Software Engineering

Job description

Meet the Team

Join Cisco's Webex Media engineering site in Stockholm, where we craft the meeting experience that connects people and businesses around the world. We are a highly motivated, startup-like team within a global organization, combining the impact and resources of Cisco with the agility and camaraderie of a smaller group. Our work powers the shift to a hybrid workforce and aims to make people feel truly connected. You'll find a friendly, supportive environment that celebrates creativity, growth, and a shared passion for building world-class real-time audio algorithm experiences.

Your Impact

• Design, implement, and optimize VoIP audio algorithms, including adaptive jitter buffers, packet loss concealment, and codec pipelines based on product requirements.
• Perform peer code reviews and automate development workflows and quality gates.
• Participate in agile ceremonies including daily stand-ups, planning, releases, and retrospectives.
• Collaborate across teams to broaden technical and soft skills through training and mentoring.

Minimum Qualifications:

• MSc (or equivalent) in Software Engineering or a related field.
• Hands-on experience developing VoIP or real-time audio algorithms (e.g., adaptive jitter buffer, packet loss concealment, codec integration) in production systems.
• Proficiency in C/C++ with strong knowledge of data structures, algorithms, and design patterns.
• Experience with media streaming and relevant protocols for real-time applications.
• Professional verbal and written communication skills in English.
• Uses AI responsibly to accelerate development.
• Critically reviews AI-generated code before using it.

Preferred Qualifications:

• Experience applying AI/ML to audio algorithm development or optimization in production voice systems.
• Experience evaluating and tuning audio algorithms using objective metrics (e.g., POLQA, PESQ) and subjective listening tests.
• Experience with close-to-real-time systems and performance-sensitive code paths.
• Comfort with incremental development, testing, and A/B testing in production.
• Collaborative, friendly, and self-directed; eager to learn and share knowledge.
• Steers AI effectively via context and prompt design.

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.