Backend Engineer
Modulate · We are a Boston-based startup using AI and audio technologies to create safer & more inclusive voice chat experiences with ToxMod
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Join Modulate as we pioneer the future of conversational intelligence.
Modulate is the leader in conversational voice intelligence. We enable platforms and 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 self-serve Conversation Intelligence Platform — APIs, workflows, and applications that bring voice understanding to customers at enterprise scale.
We are building a self-serve Conversation Intelligence Platform — APIs, workflows, and applications that bring voice understanding to customers at enterprise scale.
About the Role
We’re looking for a Backend Engineer to help build and scale our Developer and Enterprise APIs. You will play a critical role in bringing our world-class ML audio models to market through robust, scalable APIs. Your work will directly impact both our product velocity and our ability to serve enterprise and developer customers.
Develop and Iterate on early-stage products that are key to Modulate’s success
Expand the capabilities and use cases supported by our APIs
Improve scalability, reliability, and performance across core systems
Establish strong architectural foundations for long-term growth
Accelerate Modulate’s ability to serve both B2B and B2C customers
What You Will Do
Collaborate with engineers and product leaders to scope, design, and execute API projects
Design, build, test, and deploy API features and improvements
Maintain and operate production APIs to ensure reliability and performance
Debug issues and continuously improve system stability and scalability
Contribute to team knowledge through mentorship, demos, and technical discussions
What We Are Looking For
Strong experience with object-oriented Python
Experience designing and building APIs in production environments
Proven ability to collaborate effectively within engineering teams
Experience building greenfield systems and scaling existing products
Benefits
At Modulate, we prioritize people and sustainability—because doing great work requires feeling supported and safe. Some of our key benefits include:
Competitive salary + equity- Full health, dental, and vision coverage
Flexible PTO, with a strong culture of taking it
Weekly team lunches with dietary accommodations
Hybrid work: core in-office days with flexible remote options
Regular leadership and industry learning sessions
Support for career development and continued learning
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: $140,000 to 170,000
Equity: Offered
Other perks: HSA, FSA, 15 holidays, professional growth resources
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 or reach out directly—we’re excited to meet you.
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