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. 

Other Experience:

• Experience with VOIP and SIP platforms such as FreeSWITCH and Kamailio is highly desirable. 
• Familiarity with monitoring tools like Prometheus, Grafana, or similar. 
• Experience with high-availability and disaster recovery practices. 
• Knowledge of database technologies (SQL/NoSQL). 

Nice to Haves:

• Experience with cloud platforms such as AWS, GCP, or Azure. 
• Familiarity with containerization and orchestration tools (Docker, Kubernetes). 
• Knowledge of microservices patterns and best practices. 
• Experience with security practices, particularly in the context of VOIP and telecommunications systems. 

More about TextNow...

· Customer Obsessed (We strive to have a deep understanding of our customers)

· Do Right By Our People (We treat each other with fairness, respect, and integrity)

· Accept the Challenge (We adopt a "Yes, We Can" mindset to achieve ambitious goals)

· Act Like an Owner (We treat this company like it's our own... because it is!)

· Give a Damn! (We are deeply committed and passionate about our work and achieving results)

· Strong work life blend 

· Flexible work arrangements (wfh, remote, or access to one of our office spaces)

· Employee Stock Options 

· Unlimited vacation 

· Competitive pay and benefits

· Parental leave

· Benefits for both physical and mental well being (wellness credit and L&D credit)

· We travel a few times a year for various team events, company wide off-sites, and more

At TextNow, our mission is built around inclusion and offering a service for EVERYONE, in an industry that traditionally only caters to the few who have the means to afford it. We believe that diversity of thought and inclusion of others promotes a greater feeling of belonging and higher levels of engagement. We know that if we work together, we can do amazing things, and that our differences are what make our product and company great. 

By submitting an application to TextNow, you agree to the collection, use, and disclosure of your personal information in accordance with the TextNow Candidate Policy