Full-Time Senior VoIP Engineer

We believe communication belongs to everyone. We exist to democratize phone service. TextNow is evolving the way the world connects and that's because we're made up of people with curious minds who bring an optimistic, yet critical lens into the work we do. We're the largest provider of free phone service in the nation. And we're just getting started.

Join us in our mission to break down barriers to communication and free the flow of conversation for people everywhere.

TextNow is looking for a Senior VoIP Engineer to join our Core Experiences Team. In this role, you will be responsible for designing, developing, and maintaining the backend services that power our high-traffic platform.

You’ll work with technologies like FreeSWITCH, Kamailio, AWS, Golang, gRPC, Kubernetes, Terraform, and a microservice architecture to ensure the reliability, scalability, and performance of our systems.

Additionally, you'll be working with databases and event streaming platforms to handle high-volume data and real-time communication.

Handling tens of millions of calls and messages daily, you’ll focus on keeping our platform fast, responsive, and highly available.

As a senior developer, you'll also have the opportunity to lead major initiatives, mentor junior engineers, and drive technical innovation within the team.

What You'll Do:

• Develop and maintain VOIP services and SIP infrastructure that scale to millions of users.
• Collaborate with cross-functional teams to design and build robust and scalable architectures.
• Write clean, well-documented, and maintainable code in Golang.
• Troubleshoot and resolve technical issues, ensuring high uptime and reliability.
• Contribute to architectural decisions and drive best practices for performance and security.
• Participate in code reviews and provide mentorship to junior team members.

Who You Are:

• You have extensive experience working with Golang in a production environment.
• You have a deep understanding of VOIP technologies and telecommunications, with experience integrating and scaling VOIP services.
• You know and are proficient in VoIP troubleshooting tools, such as sngrep, wireshark, etc.
• You have deep knowledge of real-time communications protocols, such as SIP, SDP, WebRTC, RTP, etc.
• You have experience working with IaC and Configuration Management tools such as Terraform and Ansible
• You thrive in a collaborative environment and have a passion for solving complex technical challenges.
• You have experience working with distributed systems, microservices, and containerized environments.
• You have excellent communication skills and enjoy mentoring junior engineers.

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