Senior Machine Learning Engineer

About the Company

Modulate is the leader in conversational voice intelligence. We enable enterprises to deeply understand how people communicate and take timely action based on those insights. Our products help detect harm, prevent fraud, and build safer, more trusted online and real-world voice environments. We are building a Conversation Intelligence Platform — APIs, workflows, and applications that bring voice understanding to customers at enterprise scale.

We're looking for a Senior Machine Learning Engineer to help advance the state of voice understanding at Modulate. In this role, you'll design, train, evaluate, and deploy cutting-edge machine learning models that power our products. You'll work closely with researchers, engineers, product leaders, and executives to bring innovative ML solutions from concept to production.

Your Impact

• Develop and deploy high-quality machine learning models that power Modulate's products
• Advance our capabilities in conversational voice intelligence through applied research and engineering
• Translate needs from Product and Commercial teams into scalable ML solutions
• Improve model performance, reliability, and efficiency across our platform
• Contribute to a collaborative, high-performing engineering culture

What You Will Do

• Design, train, evaluate, and deploy machine learning models for production applications
• Collaborate with Product, Engineering, and Commercial partners, including sales, partnerships, and customer success, to define and execute on ML initiatives
• Conduct experiments to improve model quality, accuracy, robustness, and scalability
• Partner with platform and infrastructure teams to operationalize and monitor ML systems in production
• Analyze model performance and identify opportunities for improvement
• Communicate technical findings, tradeoffs, and recommendations to both technical and non-technical stakeholders
• Contribute to technical strategy and help shape the future direction of Modulate's ML systems
• Review code, share knowledge, and mentor teammates as needed
• Stay current on advances in machine learning and identify opportunities to apply new techniques to our products

What We Are Looking For

• 5+ years building and deploying production-grade machine learning systems, including models you have shipped and owned in production
• Experience training, evaluating, or deploying models on audio, speech, or spoken-language data, such as ASR, TTS, speaker modeling, or NLP on conversational transcripts
• Strong experience with Python and a modern deep learning framework, with PyTorch preferred
• Experience designing experiments and evaluating model performance
• Experience working directly with product managers and customers to turn requirements into model specifications
• Strong communication skills and the ability to explain complex technical concepts clearly

Nice to Have

• Experience communicating research externally through papers, conferences, or open-source contributions
• Experience serving models on cloud infrastructure, especially AWS
• Experience building and maintaining large-scale ML infrastructure or MLOps systems
• Experience in fast-paced startup environments

Benefits

• Competitive salary + equity
• Full health, dental, and vision coverage
• Flexible PTO with a strong culture of taking it
• Weekly team lunches with dietary accommodations
• Based in our Somerville, MA office with core in-office days
• Leadership and technical learning sessions
• Career development and continued growth support
• Up to 8 weeks work-from-anywhere policy
• A deeply inclusive, human-centered culture

Pay Transparency

Modulate believes in transparency as a cornerstone of equity and trust. Compensation for this role is based on seniority, skills, and experience.

Salary: $170,000–$200,000
Equity: Offered

Additional benefits include HSA, FSA, 15 company holidays, and professional development resources.

This role is based in Somerville, MA, with core in-office days. We will consider exceptional remote candidates within the United States.

About Modulate

Modulate is on a mission to make voice a force for good online. Our tools help communities thrive by proactively detecting toxic behavior, protecting user identity, and empowering safety teams. We're trusted by leaders in gaming and beyond—and we're growing fast.

We believe that great cultures don't just happen. That's why we've built a foundation of intentional systems: from bias-reducing hiring practices to transparent pay to tools that help teams collaborate across communication styles. At Modulate, we treat people like people—and we're building technology that does the same.

Ready to join us? Apply here. We accept applications on an ongoing basis.

A Quick Note as You Apply

• Please apply through the website rather than emailing careers@modulate.ai.
• In your written answers, please leave out protected demographic information, and write in your own voice.