Principal Software Engineer Real-Time Voice

About Parloa

Parloas 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. It is not just a vision; Parloa has powered over ONE BILLION interactions between global enterprise brands and their customers with companies like HealthEquity Allianz SAP BarmeniaGothaer and TUI already deploying Parloa at scale.

About the role:

Voice is one of the most demanding and differentiated parts of what we do. As Principal Software Engineer for Voice/VoIP youll own the technical direction of our real-time voice infrastructure the systems that let AI agents have natural low-latency phone conversations at enterprise scale across telephony providers carriers and global markets.

This is a hands-on technical leadership role. Youll set architectural direction solve the hardest problems yourself and raise the bar for how the wider engineering org builds and reasons about voice systems. Youll work closely with infrastructure AI/ML and product teams to ensure our voice stack is fast reliable and ready to scale globally.

Areas of ownership:

• Own the architecture and technical roadmap for Parloas 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 optimise 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 Parloas technical voice expertise in conversations with enterprise customers and partners where needed

Who you are:

• 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

Our engineering values:

At Parloa we hire promote and evaluate based on cultural and technical excellence. Youll thrive here if you:

• Earn Trust act with transparency and reliability.
• Obsess Over Customers always start with the customer problem.
• Think Big set bold goals and pursue them fearlessly.
• Have Integrity do the right thing especially when its hard.
• Disagree & Commit debate with candor align fast and deliver.
• Own It take full responsibility for outcomes not just tasks.
• Dive Deep master the details without losing sight of the big picture.
• Bias for Action move fast decide quickly iterate fearlessly.
• Deliver Value measure success by customer and business impact.
• Insist on the Highest Standards raise the bar continuously.
• Go the Extra Mile make the impossible possible.
• Hire & Elevate the Best raise the bar with every hire

Our recruiting process:

Recruiter Call Technical Peer Interview 360 Tech Interview Loop Bar Raiser

Why Parloa

Were at the beginning of a new era in customer experience one where AI doesnt just respond but understands reasons and takes action. Were building agentic AI that enterprises trust with their most important customer moments: complex questions high volumes real stakes. When millions of people reach out to a brand those interactions arent just support tickets; theyre defining experiences. Were here to raise the standard: making every conversation seamless intelligent and genuinely helpful. If you care about shaping how businesses and customers connect at scaleand want your work to matter in real everyday momentsthis is where you do it.

At Parloa ownership isnt a buzzword; it means being accountable for outcomes not just tasks. We operate in a category thats evolving fast where the bar is high and the problems are complex. We hire people who think in solutions communicate with clarity and follow through. People who are comfortable making decisions taking responsibility and raising the standard for themselves and those around them.

Weve grown beyond the earliest startup phase but weve kept the intensity: fast execution direct feedback and a strong expectation to contribute meaningfully from day one.

Backed by leading global investors like General Catalyst EQT Ventures and Altimeter Capital were scaling with a clear ambition: to become the global category leader in enterprise-grade conversational AI.

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. Please click here to learn more.

* We provide equal opportunities to all qualified applicants regardless race gender sexual orientation age religion national origin disability status socioeconomic background and other characteristics.

Required Experience:

Staff IC

Employment Type : Full Time
Experience: years
Vacancy: 1