Senior Speech Engineer - AI/ML

Berlin, Germany

Full Time Senior level / Expert
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Posted 1 month ago

Because you belong at Twilio.

The Who, What, Why and Where

Twilio is looking for a Senior Speech Engineer who wants to design, develop, deploy and operate services at scale to power Twilio’s AI/ML products. You are eager to learn from the team as well as inspire your teammates with your knowledge and skills. You think about how data shapes software as much as how your code does. Thinking of scale comes naturally to you. 

You have a keen sense of how data streams should be managed and how data should be organized. You have experience working with speech technologies and understand the infrastructure required to run high volume speech recognition systems. 


Twilio is looking for a Senior Speech Engineer who lives the Twilio Magic and they also have: 

Basic Qualifications

  • MSc or PhD in Electrical and Computer Engineering, Machine Learning, Statistics, Physics,  or related quantitative field
  • 2 years of experience in a production environment or equivalent experience in a research environment
  • Experience in Speech Recognition Technologies

You need to have the basic qualifications to be considered for this position. Below qualifications would be great to have but not required.

 Preferred Qualifications

  • MSc or PhD in Electrical and Computer Engineering, Machine Learning, Statistics, Physics,  or related quantitative field
  • 5 years of experience in Java or C++ in a production environment
  • Experience in Speech Recognition Technologies: Kaldi, SRILM, sequitur-G2P, and equivalent
  • Experience with deep learning toolkits like Tensorflow, PyTorch
  • Experience with LSTMs and RNNs in speech recognition applications
  • Experience in building speech recognition models for various languages and deploying them to production environment
  • Experience with data augmentation to increase robustness of model to various noise conditions.
  • Strong experience with descriptive statistics and visualization tools
  • Expert in Python, or another scripting language like Bash
  • Knowledge of statistical modelling / machine learning techniques
  • Experience with data selection methods


This job is for a Senior Speech Engineer to be in charge of developing robust large scale speech recognition systems for multiple languages and environments. 

  • WRITE IT DOWN: Implement models and systems for accurate transcription of speech from various sources
  • DRAW THE OWL: Analyze and evaluate the quality of data used for model training and testing
  • BE AN OWNER & BE BOLD: Maintain a repository of models and document the training process for each model, along-side an audit-able trail for determining what data source was used for training the model.
  • EMPOWER OTHERS: Automate model validation and metrics collection in collaboration with the engineering teams.
  • NO SHENANIGANS: Develop and maintain model customization workflow and pipeline to automate model customization for various customers.


Twilio is a company that is empowering the world’s developers with modern communication in order to build better applications. Twilio is truly unique; we are a company committed to your growth, your learning, your development, and your entire employee experience. We only win when our employees succeed and we're dedicated to helping you develop your strengths. We have a cultural foundation built on diversity, inclusion, and innovation and we want you and your ideas to thrive at Twilio.


This position will be located in beautiful office at Sokolovská 694/100a, Prague 8 – Karlín, 18600 in Prague. You will enjoy our incredible perks: leisure room with fayboys and a slot machine you can play with and relax, fully stocked snacks, fresh fruit and drinks, catered breakfast and lunch for all of us once per week, a small tennis table (and people who love to be challenged playing it!) and frequent fun events.

You will also be part of a company that believes in small teams for maximum impact; that strives to balance work and home life; that understands that this is a marathon, not a sprint; that continuously and purposefully builds an inclusive culture where everyone is able to do and be the best version of themselves. We seek people who naturally demonstrate our values, who are challenged by problems, empower others to thrive, and can draw the owl and not be beholden to one playbook.

About us:

Millions of developers around the world have used Twilio to unlock the magic of communications to improve any human experience. Twilio has democratized communications channels like voice, text, chat, video and email by virtualizing the world’s communications infrastructure through APIs that are simple enough for any developer to use, yet robust enough to power the world’s most demanding applications. By making communications a part of every software developer’s toolkit, Twilio is enabling innovators across every industry — from emerging leaders to the world’s largest organizations — to reinvent how companies engage with their customers.

Twilio is proud to be an equal opportunity workplace and is an affirmative action employer. We are committed to equal opportunity regardless of race, color, ancestry, religion, gender, gender identity, parental or pregnancy status, national origin, sexual orientation, age, citizenship, marital status, disability, or Veteran status and operate in compliance with the San Francisco Fair Chance Ordinance.

Job tags: AI Deep Learning Engineering Java Machine Learning ML Python PyTorch Research TensorFlow
Job region(s): Europe
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