Senior VOIP Infrastructure Engineer

Hiya•Seattle, WA

12d•$188,000 - $230,350

About The Position

Hiya brought the Hiya AI phone app to market, and we've learned that VoIP expertise is non-negotiable for our platform's success. This role exists to establish voice as a core competency at Hiya—taking our homegrown solutions and turning them into a scalable platform that can support both our consumer app and future carrier partnerships. As our Senior VoIP Infrastructure Engineer, you'll own the infrastructure and systems that power voice at Hiya, with a focus on mobile app and B2B carrier contexts. You'll be the subject matter expert for call quality and the ranking engineer making platform architecture decisions in this domain. This means navigating significant ambiguity and making judgment calls about platform direction without a playbook to follow. This role creates long-term value by platformifying our existing work, preparing us for carrier integrations, and strengthening Hiya's position in the voice pipeline—especially for mobile phone use cases. You'll be building the foundation that supports both our consumer-facing products and the carrier partnership opportunities that will drive our growth.

Requirements

Deep VoIP expertise: You've built and scaled voice infrastructure before, with hands-on experience in VoIP, WebRTC, media handling, and call quality optimization
Ownership mindset: You're comfortable being the ranking technical voice in your domain, making calls with incomplete information, and taking responsibility for outcomes
Platform thinking: You see beyond immediate problems to build systems that create leverage and unlock future opportunities
Comfort with ambiguity: You thrive when there isn't a clear playbook, and you know how to make pragmatic tradeoffs between speed and perfection
Mobile and carrier context: Experience with voice in mobile apps or carrier integrations is a strong signal of fit
Collaboration and communication: You can translate complex technical decisions into language that helps the business move forward, and you work well with cross-functional partners
PCAP analysis: You're comfortable with Wireshark and packet-level debugging for troubleshooting call quality issues

Responsibilities

Own end-to-end infrastructure for voice at Hiya, including VoIP, media handling, and WebRTC technologies
Serve as the technical authority on call quality, making decisions about optimization, points of presence, and platform architecture
Build and scale solutions for MediaStream B2B UA integration to support carrier partnerships
Make platform-level architectural decisions as the ranking engineer in this domain, operating with significant autonomy in ambiguous territory
Work across mobile app and carrier contexts, ensuring our voice capabilities meet the needs of both consumer users and enterprise partners
Collaborate with product and engineering teams to translate technical possibilities into business opportunities

Benefits

Employer-sponsored Insurance
Medical, dental, and vision (PPO & HDHP); 50% dependent coverage
Health, flexible spending, and dependent care accounts
Life, AD&D, and accident coverage, with company-paid life and long-term disability
401(k) with 3% company match (via Fidelity)
Flexible vacation policy and paid company holidays
Paid parental leave
Work-from-home equipment stipend
$1,000 annually to invest in your learning and growth
$1,000/year in charitable donation matching
Team lunch 2x per week