Impress employers and recruiters.
Choose from hundreds of resume examples.
Impress employers and recruiters.
Choose from hundreds of resume examples.
Tailor your resume to this Principal Software Engineer - Real-Time Voice role.
Rezi rewrites your resume against Parloa's job description. Free.
Tailor your resume to this Principal Software Engineer - Real-Time Voice role.
Rezi rewrites your resume against Parloa's job description. Free.
Don't guess if your resume is good enough.
See how it scores against the Principal Software Engineer - Real-Time Voice posting at Parloa — free, in seconds.
Don't guess if your resume is good enough.
See how it scores against the Principal Software Engineer - Real-Time Voice posting at Parloa — free, in seconds.
About the Role
As Principal Software Engineer for Voice/VoIP, you will own the technical direction of our real-time voice infrastructure, enabling AI agents to have natural, low-latency phone conversations at enterprise scale across various providers and markets. This hands-on technical leadership role involves setting architectural direction, solving complex problems, and improving the engineering organization's approach to voice systems. You will collaborate with infrastructure, AI/ML, and product teams to ensure the voice stack is fast, reliable, and globally scalable.
Responsibilities
- Own the architecture and technical roadmap for Parloa's Voice/VoIP infrastructure, including SIP trunking, media handling, and real-time audio pipelines.
- Design for low-latency, high-availability voice at enterprise scale across global telephony carriers and providers.
- Drive technical decisions on protocols and standards (SIP, SDP, RTP/SRTP, RTCP, WebRTC, ICE, STUN/TURN) and real-time media transport.
- Partner with AI/ML teams to optimize the integration between voice infrastructure and conversational AI models (ASR, TTS, turn-taking, barge-in).
- Diagnose and resolve deep, systemic issues in call quality, latency, jitter, and packet loss across distributed, multi-region deployments.
- Define and uphold engineering standards for reliability, observability, and security across the voice stack.
- Mentor senior and staff engineers, acting as a technical multiplier across the organisation.
- Evaluate and integrate with telephony providers, carriers, and SIP trunk vendors as Parloa expands into new markets.
- Represent Parloa's technical voice expertise in conversations with enterprise customers and partners where needed.
Requirements
- 10+ years of engineering experience, including 5+ years hands-on building, operating, or debugging production Voice/VoIP, SIP, WebRTC, or carrier-grade voice infrastructure.
- Strong knowledge of SIP, SDP, RTP/SRTP, RTCP, WebRTC, ICE, and real-time media transport protocols.
- Hands-on understanding of audio codecs and media behavior, including Opus, G.711/G.722, codec negotiation/transcoding, DTMF/RFC2833, jitter buffers, packetization, and codec-related quality/latency trade-offs.
- Experience building or operating large-scale, distributed, real-time systems with strict latency and availability requirements.
- A track record of owning architecture for complex systems and driving technical decisions with broad organisational impact.
- Experience working with telephony carriers, SIP trunk providers, or PSTN integrations at scale.
- Deep, hands-on ownership of production SIP-based voice infrastructure at enterprise scale (e.g. Kamailio, FreeSWITCH, Asterisk, pjsip).
- Strong systems programming skills in one or more of Go, C, C++ or Rust, with the ability to work at the media/transport layer.
- Comfort operating in cloud environments (AWS, GCP, or Azure) and with container orchestration (Kubernetes).
- Excellent communication skills — able to explain complex technical trade-offs to engineers and non-engineers alike.
- A genuine interest in AI and conversational technology, and how voice infrastructure underpins it.
- Experience instrumenting and operating voice-quality observability — call-quality metrics (e.g. MOS), per-leg call tracing, and diagnosing jitter, latency, and packet loss from telemetry.
Skills
- Voice/VoIP
- SIP
- WebRTC
- Carrier-grade voice infrastructure
- SDP
- RTP/SRTP
- RTCP
- ICE
- STUN/TURN
- Real-time media transport
- Audio codecs
- Opus
- G.711/G.722
- DTMF/RFC2833
- Jitter buffers
- Packetization
- Go
- C
- C++
- Rust
- AWS
- GCP
- Azure
- Kubernetes
- Kamailio
- FreeSWITCH
- Asterisk
- pjsip
- Observability
- MOS
Experience Level
- 10+ years of engineering experience
- 5+ years hands-on building, operating, or debugging production Voice/VoIP, SIP, WebRTC, or carrier-grade voice infrastructure
About the Company
- Parloa's mission is to make every customer conversation feel effortless for both customers and the companies serving them.
- As agentic AI accelerates, Parloans are shaping the foundation of a new era in customer experience, one where customer support is no longer transactions, but meaningful exchanges.
- Parloa has powered over ONE BILLION interactions between global enterprise brands and their customers, with companies like Booking.com, HealthEquity, Allianz, SAP, BarmeniaGothaer, and TUI already deploying Parloa at scale.
- We provide equal opportunities to all qualified applicants regardless race, gender, sexual orientation, age, religion, national origin, disability status, socioeconomic background and other characteristics.
- Parloa is committed to upholding the highest data protection standards for our clients' and employees' data.
- All our employees are instrumental in ensuring the utmost care, GDPR, and ISO compliance, including ISO 27001, in handling sensitive information.
- Parloa is an e-verify employer in the USA.
Equal Opportunity
- We provide equal opportunities to all qualified applicants regardless race, gender, sexual orientation, age, religion, national origin, disability status, socioeconomic background and other characteristics.