Senior Go Developer - Real-Time Voice Telephony AI

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 Go Developer to build real-time voice AI systems that set the standard.

Your responsibilities will include:

• Building & Optimising: Develop and fine-tune our Go-based real-time, low-latency voice telephony AI service, ensuring it runs smoothly and efficiently.

• Scalable Solutions: Leverage Go’s powerful concurrency features—like goroutines and channels—to build scalable systems that can handle heavy traffic with ease.

• Cloud Infrastructure: Design and implement cloud infrastructure that supports flexible and reliable deployment models, ensuring our services are always available when our users need them.

• Cross-Language Collaboration: Work closely with our backend teams to integrate Go services with Python components, creating a seamless experience across our platform.

• Infrastructure-as-Code: Use Terraform to manage cloud deployments, ensuring that our infrastructure is scalable, consistent, and easy to maintain.

What you bring:

• Go Expertise: You have a strong proficiency in Go, with a deep understanding of concurrency, goroutines, and channels. You know how to use these tools to build efficient, scalable, and maintainable systems.

• Cloud Savvy: Extensive experience in cloud infrastructure, preferably across multiple providers like AWS, GCP, or Azure.

• Terraform Pro: Skilled in using Terraform for infrastructure-as-code, making cloud deployments straightforward and reliable.

• Real-Time Systems Experience: Experience in developing and optimising real-time, low-latency systems, with a focus on performance and scalability.

• Python Knowledge: While Go is your primary tool, you’re also comfortable with Python and can contribute to cross-language integrations.

• Voice Telephony or Audio Processing: Experience with voice telephony systems or audio processing is a big plus!

Who you are:

• Problem Solver: You love tackling complex technical challenges and coming up with innovative solutions.

• Team Player: You thrive in a collaborative environment and are excited to share ideas and learn from others.

• Performance-Oriented: Always looking for ways to optimise systems and improve performance.

• Communicator: Excellent communication skills, able to explain technical concepts clearly to both technical and non-technical team members.

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.