Speech Scientist

Job Locations US-CA-San Francisco
Posted Date 1 month ago(9/16/2021 3:20 AM)



Appen is the world's leading innovative technology company, providing high-quality language and data services for machine learning and artificial intelligence. Appen is headquartered in Sydney, Australia and has subsidiaries in United States, United Kingdom, Philippines, and China. Appen has more than 20 years of experience in collecting and processing a variety of data, including data types such as speech, text, and images, etc. Appen has a pool of more than 1 million prequalified crowd resources around the world able to provide data collection and processing services in more than 180 languages. Appen’s client include global leaders in high-tech, automotive, e-commerce, etc. and governments to help them develop and improve products and technologies based on natural language understanding and machine learning. Appen is listed on the Australian Stock Exchange with stock code: APX


Job Description


Artificial Intelligence is transforming the world in almost every industry. Everyone knows only good training data can produce the best machine learning solutions. However, creating training data with high quality in a scalable way is very challenging, and very few companies can do it. The whole AI world is starving for great training data. Appen is the market lead in training data generation field for more than 22 years. It generates all kinds of training data like content relevance, image & video, text & audio, as well as data capturing.


Appen Tech team is solving the AI data problem by combining the power of humans and technology. This world-class and exciting engineering position awaits a qualified candidate who will join Appen’s speech science team. Please check the team’s recent work at .


We are seeking several senior speech research scientists with hands-on expertise in speech processing,  speech recognition, software  development, and machine learning to build AI solutions to improve millions of annotators' efficiency at scale. You get the opportunity to work with our global tech team from Shanghai, Silicon Valley, and Sydney. It is a leading data company with a start-up culture. And we only want people who want to make a huge impact on the AI world instead of just a job. 



Key Responsibilities

  • Develop speech processing algorithms for automating manual annotation tasks, which includes speech separation, speech detection, speech segmentation, speech recognition, speaker diarization and speaker recognition, etc.
  • Work with the teams to build human-in-the-loop AI/ML solutions in speech processing and speech recognition domain to improve annotation efficiency and quality.
  • Work closely with project managers to deliver the customer satisfied solutions in time and in good quality.
  • Participate in cutting edge research in speech processing and speech recognition areas.
  • Serve as subject matter expert, drive thought leadership, and participate cutting edge research at the areas of speech processing and speech recognition.
  • Mentoring and coaching junior staff, driving internal operational excellence, and developing a career for junior research scientists.


Skills and Requirements

  • PhD. degree in Computer Science, Electrical Engineering or related areas is required for this position.
  • Minimum 1-4 years of industrial experience in speech related AI/ML fields.
  • Familiar with mainstream speech recognition toolsets, like Kaldi, Tensorflow, Pytorch etc.
  • Solid understanding of ASR theories and algorithms, from traditional methods to modern deep learning-based techs.
  • Ability to work independently on developing speech processing/recognition projects and hands-on experience in delivering speech processing/recognition solutions.
  • Solid knowledge of machine learning and deep learning algorithms.
  • Familiar with C/C++, Python, or other programming languages.
  • Excellent communications skills, both verbal and written in English


We are an equal opportunity employer and value diversity at our company. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.


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