Senior ML Engineer – Speech/Audio (TTS / STT)

This is a fully remote role, allowing you to work from anywhere in the world.

About Synthflow

At Synthflow we’re building the easiest way for businesses to create AI-powered phone agents. No coding, no fuss—just smarter automation. We’re passionate about delivering the future of voice technology with lightning-fast, scalable solutions. It’s an exciting time at Synthflow: we’re early, fast-growing, and laser-focused on impact. Join us to do the best work of your career while helping businesses thrive.

About the role

We’re looking for a Senior ML Engineer to build the next generation of AI-powered speech tools. In this role, you will focus on the design, development, and optimization of cutting-edge TTS and STT models. Your work will play a crucial role in enhancing the performance, naturalness, and accuracy of our speech solutions, directly impacting the user experience.

Your responsibilities will include:

• Architect and develop state-of-the-art machine learning models for TTS and STT applications.

• Lead the training, fine-tuning, and optimization processes to ensure our speech models achieve top-tier performance.

• Collaborate with cross-functional teams to integrate these technologies into scalable and robust products.

• Drive innovation by staying updated with the latest industry trends and research in speech technologies.

• Collaborate with NLP researchers and Software Engineers for the integration of new speech processing algorithms.

Who you are:

• You have a solid background in speech technologies with a strong focus on TTS and STT.

• You have over 3 years of practical experience in applying machine learning to develop and optimize speech processing systems.

• You are proficient in Python and familiar with modern ML frameworks and tools.

• You are a problem solver with a keen analytical mind, capable of tackling complex challenges in a dynamic environment.

Beyond the basics:

• Master's degree in Computer Science, Electrical Engineering, or a related field.

• At least 3 years of hands-on experience in speech technology, specifically in developing TTS and STT systems.

• Strong software development skills and experience with machine learning model implementation.

• Demonstrated capability in delivering effective solutions in speech processing.

What We Offer:

• Autonomy at speed: High-ownership roles in a fast-moving startup.

• Remote-first flexibility: Contribute from anywhere, on your schedule.

• Cutting-edge technology: Work on what interests you most.

• Career growth: Scale your impact as the company grows.

• Rewarding package: Competitive pay, equity options, and comprehensive benefits that reflect your skills and experience.