The WellSaid Labs Applied Machine Learning Team works with stakeholders to identify, refine, and solve problems at the intersection of machine learning and customer needs. This team understands customer needs through quantitative and qualitative research and they work across WSL teams to understand how machine learning is utilized and how it can be improved.

Improving and maintaining our ML solutions includes creating test datasets and metrics to define and gauge success, working with the ML Platform Team to prioritize model updates, training new models for deployment, coordinating releases, and educating the customer on any new capabilities. The Applied ML Team is consistently testing and reviewing any deployed models.

As a Senior Data Engineer on the Applied ML Team at WellSaid Labs, you will be working to regularly improve our ML services, chiefly our  text-to-speech service. You will own the strategy and development of projects pertaining to our testing frameworks, customer research, and model improvements, among others. As an individual contributor you will also add new datasets; train, deploy, and evaluate new models; and design experiments and algorithms for solving new and creative TTS challenges.

You will build automated systems for evaluating ML performance: accuracy, consistency, and customer acceptance. You will summarize your findings into compelling reports and then collaborate with the Platform and Applied ML teams to build solutions. You should be familiar with Text-to-Speech technology, database querying, data labeling and preparing, crafting workflows for crowd-sourcing evaluations, and metrics reporting. It would be great if you have experience being a team leader and can advise the rest of the Applied ML team in ML-, data- and research-related questions and proposals.


How You’ll Contribute:  

In your day-to-day, you will:

  • Own, strategize, and manage efforts to evaluate and improve the model: gather customer insights, audit training data, and bridge gaps between model performance and customer expectations
  • Work directly with text and audio data: gathering, compiling, and organizing datasets, preparing data for machine training, evaluating results, debugging problematic data
  • Train and deploy ML models: incorporating new data, monitoring training metrics, debugging failing code, deploying a model for customer use
  • Evaluate ML models: consider causation or correlation between training data and ML predictions, design ML experiments and establish success criteria, gather and evaluate metrics including mean opinion scores; design evaluation tools for measuring pronunciation accuracy, naturalness, text normalization coverage, among others to minimize customer-model friction
  • Additional research projects: interesting data or use cases, alternative services and solutions, internal process improvements, new quality evaluation exercises, etc.

In this role, you will need to take big ideas and build out specifications for achieving smaller milestones toward the ideal state. You will need to organize efforts into scrappy research, MVP executions, and long-term solutions. You should balance immediate results and technical debt with vision for ideal, automated systems. Additionally, this role requires you to write and review code that enables you, and others, to perform each of these tasks. It also requires you to think critically about Text-to-Speech tooling, customer experience, language, dialect, pronunciation, phonemics, and audio dynamics in order to build the highest quality voices and Studio/API experiences for our customers.


What We’re Looking For 

To thrive in this role, you ideally have experience with and a solid understanding of ML concepts and best practices, a history of successfully managing datasets and metrics in a ML capacity, coding experience developing tools that can evaluate data and enable you and your team to establish recommendations based on data analysis results, and experience with software releases to production with strong considerations for both customer impact and ethical implementations of AI.

  • You have worked in ML pipelines and have experience developing test suites, automating testing frameworks, and feeding data analysis back into model development
  • You have experience working with audio data or within the TTS domain
  • You have worked in a technical team at a high level, managing project expectations and communicating your plans, project statuses, and results frequently and comprehensively
  • You have worked with a wide array of data types, building analysis tools and establishing success criteria for evaluating the success of data-driven projects
  • You have built and deployed ML models for use by a non-technical audience, clearly communicating usage guidelines and best practices
  • You have experience building and documenting new processes, especially in a ML pipeline or similar capacity
  • You have a strong understanding of the importance of data preparation for ML training, data visualization and metrics for ML assessment, and analysis of ML results
  • You have familiarity with software and feature releases and can work closely with a Product team for exposing ML changes to customers
  • [Bonus] You are fluent in Spanish or French
  • [Bonus] You have studied Deep Learning and have applied models to solve technical challenges
  • [Bonus] You have an interest in eventually managing an Applied ML Team, strategizing workload, and mentoring contributing engineers under your supervision

To join our team you must also:

  • Be a U.S. Citizen or Permanent Resident
  • pass a pre-employment background check

What We Offer 

WSL is proud to support an inclusive work environment that emphasizes each team member’s personal and professional growth. Our team is fully distributed throughout the U.S., and we support flexible schedules – work where and when you work best. You’ll have teammates just a Slack message or video call away if you ever need help solving an exciting challenge, or even if you just have a funny story to tell.

Other perks and benefits:

  • Competitive salary and stock options
  • Full medical, dental, and vision insurance
  • Matching 401(k) plan
  • Generous vacation policy/paid time off
  • Parental leave
  • Learning & development stipend
  • Home office stipend

As a startup, we strive to be externally competitive with companies at a similar size and stage, and internally fair in our pay practices. The hiring salary range for this role is $130,000 – $160,000, and represents the target offer range given the scope and experience expectations for this role.

What to Expect From Us 

We strongly encourage you to apply! If we feel your skills, experience, and values match, we’ll reach out about meeting with the team.

During the interview stage, you can expect:

  • An introductory interview with the hiring manager (50 minutes); if there’s a match we’ll schedule an interview loop with the team.
  • A technical screen, via a take-home assessment
  • An Interview loop with 3-4 interviews (1 hour each) with the team members you will be potentially working with

All interviews will be remote via Google Meets; we are happy to make accommodations you might need to feel comfortable and set up for success in our process.

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