Audio Codec Design Specialist

  • Location:
    Munich, Germany
  • Area of Interest
    Engineer - Software
  • Job Type
  • Technology Interest
    AI or Artificial Intelligence, Software Development
  • Job Id

AI at Cisco

With Cisco, you're not just embracing the future - you're helping create it. We are focused on integrating AI into our solutions to transform collaboration, security, networking, observability, and more. We are innovating ethical AI products and infrastructure that enable our customers to stay ahead of cyberattacks, predict and prevent network outages, and make team meetings more productive. Our extensive data sets and broad customer reach means limitless possibilities for you to build impactful AI solutions that solve a wide array of real-world problems. Join us at Cisco where you will innovate with top AI experts and be a part of our mission to power an inclusive future for all.

AI in the Business Unit

With products and offerings ranging from contact center solutions to our award-winning Webex suite, the Cisco Collaboration group is harnessing AI to change the standard for collaboration in today’s growing virtual world.

For years, Webex by Cisco has used AI/ML to create unrivaled experiences for its users. It offers a harmony of AI capabilities such as automatic speech recognition (ASR), audio quality enhancement, natural language processing (NLP), computer vision (CV), and employee network graphs and personal profiles. This technology has allowed Webex to add such features as transcription, translation, speech enhancement, background noise removal, and gesture recognition. We are only getting started and envision a future where GenAI can bring cinematic quality to meetings, introduce conversational scheduling, develop “prep-me” features and much more. GenAI is also expanding the capabilities of our contact center offering through the ongoing development of virtual agents that offer real-time sentiment analysis, summaries, and customer history.

Fortune 500 companies, service providers, governments, educational institutions, and more rely on our collaboration offerings every day. Within Cisco Collaboration, you will be uniquely positioned to build AI that transforms the future of collaboration for millions of people around the globe.

Your Impact with AI

Who we are?

The BabbleLabs team, part of Cisco WebEx. We are a talented bunch with strong backgrounds in Electrical Engineering, Machine Learning, Speech Processing and Computer Science. Our areas of expertise include: speech enhancement, speech recognition, speech synthesis, and computer vision. But what sets our team apart from the crowd, is our vibrant and unwavering pursuit of excellence.

What you'll be doing

  • Designing and prototyping algorithms for advanced audio coding, including pre-processing and post-processing techniques to improve audio quality.
  • Participate in the productization process of the prototyped algorithms.
  • Contribute to patent IP.
  • Contribute with high-quality publications.


5+ years of experience in research, development, evaluation and productization of speech and audio coding, including methods for:
    • signal preprocessing techniques for optimal bandwidth utilization,
    • packet loss concealment,
    • post-processing methods for improving quality of low-bitrate audio,
    • pitch estimation,
    • voice activity detection,
    • signal classification,
    • time-scale modification techniques for audio synchronization and network jitter compensation.
  • Good understanding of modern lossy speech and audio coding standards, including AAC and Opus.
  • Strong background in machine learning and deep neural networks.
  • Strong background in signal processing, speech modeling, adaptive filtering and related fields.
  • Rapid algorithm prototyping experience in MATLAB, Python or C++.
  • Inquisitive, proactive and systematic working habits.
  • Demonstrated ability to innovate and make architectural trade-offs for balancing performance/cost.

Bonus qualifications

  • Prior experience in developing deep learned models for one or more of the above problems.
  • Implementing


  • Graduate degree in a relevant field. Ph.D. is a plus.

Why Cisco?

Cisco has embarked on an AI journey with immense potential, powered by an innovative and diverse work environment that encourages out-of-the-box thinking. Our strategic AI acquisitions paired with our access to extensive data positions us to have a substantial influence in the AI space in the short term and beyond. At Cisco, we believe in “one company, many careers” and with investment in multiple key AI initiatives across our business, employees have unique opportunities to broaden their experience and skills. Our award-winning culture is proof that a diverse team brings a wealth of perspectives that drive better decision-making, more inclusive products, and a richer work environment for everyone.

If you are motivated about shaping the future with AI, are eager to work with the newest technologies, and are ready to grow on a team that values every individual, Cisco is where you can turn your aspirations into achievements

Message to applicants applying to work in the U.S. and/or Canada:

When available, the salary range posted for this position reflects the projected hiring range for new hire, full-time salaries in U.S. and/or Canada locations, not including equity or benefits. For non-sales roles the hiring ranges reflect base salary only; employees are also eligible to receive annual bonuses. Hiring ranges for sales positions include base and incentive compensation target. Individual pay is determined by the candidate's hiring location and additional factors, including but not limited to skillset, experience, and relevant education, certifications, or training. Applicants may not be eligible for the full salary range based on their U.S. or Canada hiring location. The recruiter can share more details about compensation for the role in your location during the hiring process.

U.S. employees have access to quality medical, dental and vision insurance, a 401(k) plan with a Cisco matching contribution, short and long-term disability coverage, basic life insurance and numerous wellbeing offerings. Employees receive up to twelve paid holidays per calendar year, which includes one floating holiday, plus a day off for their birthday. Employees accrue up to 20 days of Paid Time Off (PTO) each year and have access to paid time away to deal with critical or emergency issues without tapping into their PTO. We offer additional paid time to volunteer and give back to the community. Employees are also able to purchase company stock through our Employee Stock Purchase Program.

Employees on sales plans earn performance-based incentive pay on top of their base salary, which is split between quota and non-quota components. For quota-based incentive pay, Cisco typically pays as follows:

.75% of incentive target for each 1% of revenue attainment up to 50% of quota;

1.5% of incentive target for each 1% of attainment between 50% and 75%;

1% of incentive target for each 1% of attainment between 75% and 100%; and once performance exceeds 100% attainment, incentive rates are at or above 1% for each 1% of attainment with no cap on incentive compensation.

For non-quota-based sales performance elements such as strategic sales objectives, Cisco may pay up to 125% of target. Cisco sales plans do not have a minimum threshold of performance for sales incentive compensation to be paid.