Lead VOIP Engineer

Job Description

What Does Success Look Like?

We are seeking a Lead VoIP Engineer to design and build high-performance modules within our Voice platform. You’ll work on the core telephony stack involving signaling, media processing, NAT traversal, and RTP relaying. This is a hands-on execution role ideal for engineers who love building, debugging, and optimizing real-time communication systems.

Seniority Level: Lead Individual Contributor

What You’ll Do:

• Implement core voice capabilities using FreeSWITCH, Kamailio/OpenSIPs, and RTPEngine.
• Build and optimize SIP call routing logic, RTP media relays, failover mechanisms, and NAT traversal.
• Develop and manage configurations for scalability, codec negotiation, SIP trunk registration.
• Implement and test features like call recording, IVR, voicemail, DTMF detection.
• Monitor live traffic and participate in 24x7 on-call rotation for critical escalations.
• Collaborate with QA on stress/load testing and with Backend teams on provisioning APIs.
• Document design decisions, configurations, and troubleshooting runbooks.

What Makes You Qualified?

• 3 to 8 years of experience building and operating VoIP systems or CPaaS platforms.
• Solid expertise with SIP signaling, RTP, and media relay techniques.
• Strong hands-on with FreeSWITCH, Kamailio/OpenSIPs, RTPEngine.
• Hands-on experience with Session Border Controller (SBC), Media Servers and WebRTC.
• Experience in managing telephony infrastructure for uptime, latency, and call quality optimization.
• Strong systems programming and debugging skills in C/C++.
• Good scripting/debugging skills (Bash, Python, or Lua for FreeSWITCH modules).
• Proficiency with diagnostic tools (Wireshark, tcpdump etc).
• Experience working with geographically distributed infrastructure or HA deployments.

Why You'll Love Sprinklr:

We're committed to creating a culture where you feel like you belong, are happier today than you were yesterday, and your contributions matter. At Sprinklr, we passionately, genuinely care. For full-time employees, we provide a range of comprehensive health plans, leading well-being programs, and financial protection for you and your family through a range of global and localized plans throughout the world.

For more information on Sprinklr Benefits around the world, head to https://sprinklrbenefits.com/ to browse our country-specific benefits guides.

We focus on our mission: We founded Sprinklr with one mission: to enable every organization on the planet to make their customers happier. Our vision is to be the world’s most loved enterprise software company, ever.

We believe in our product: Sprinklr was built from the ground up to enable a brand’s digital transformation. Its platform provides every customer-facing team with the ability to reach, engage, and listen to customers around the world. At Sprinklr, we have many of the world's largest brands as our clients, and our employees have the opportunity to work closely alongside them.

We invest in our people: At Sprinklr, we believe every human has the potential to be amazing. We empower each Sprinklrite in the journey toward achieving their personal and professional best. For wellbeing, this includes daily meditation breaks and virtual fitness. We have continuous learning opportunities available with LinkedIn Learning and more.

EEO - Our philosophy: Our goal is to ensure every employee feels like they belong and are operating in a judgment-free zone regardless of gender, race, ethnicity, age, and lifestyle preference, among others. We value and celebrate diversity and fervently believe every employee matters and should be respected and heard. We believe we are stronger when we belong because collectively, we’re more innovative, creative, and successful.

Sprinklr is proud to be an equal-opportunity workplace and is an affirmative-action employer. We are committed to equal employment opportunity regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, gender identity, or Veteran status. See also Sprinklr’s EEO Policy and EEO is the Law.

Warning about Recruiting Scams:

Please be vigilant for recruiting scams impersonating Sprinklr. Sprinklr will never ask you for money, to pay for equipment, or for unnecessary personal information during the interview process. Sprinklr will also never pay in Bitcoin or send email communications from our executives. Please review the Federal Trade Commission's advice to avoid these types of scams.

If you are contacted by someone whom you suspect may not be appropriately representing Sprinklr, please do not engage and block their email or phone number immediately.