Job
- Level
- Lead
- Location
- Berlin
- Working Model
- Hybrid, Onsite
- Job Field
- IT, Software, DevOps
- Employment Type
- Full Time
- Contract Type
- Permanent employment
Job Summary
In this role, you will design the technical architecture of the Voice/VoIP infrastructure, optimize real-time systems, and work on integrating AI models for enterprise-wide voice communication.
Job Technologies
Your role in the team
- Voice is one of the most demanding and differentiated parts of what we do. As Principal Software Engineer for Voice/VoIP, you'll 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. You'll set architectural direction, solve the hardest problems yourself, and raise the bar for how the wider engineering org builds and reasons about voice systems.
- You'll work closely with infrastructure, AI/ML, and product teams to ensure our voice stack is fast, reliable, and ready to scale globally.
- 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.
- Führen Sie technische Entscheidungen zu Protokollen und Standards (SIP, SDP, RTP/SRTP, RTCP, WebRTC, ICE, STUN/TURN) und Echtzeit-Medienübertragung.
- 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 Parloa's technical voice expertise in conversations with enterprise customers and partners where needed.
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Our expectations of you
Qualifications
- Starkes Wissen in SIP, SDP, RTP/SRTP, RTCP, WebRTC, ICE und Protokollen für den Echtzeit-Medienverkehr.
- 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.
- A track record of owning architecture for complex systems and driving technical decisions with broad organisational impact.
- 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
- 10+ Jahre Engineering-Erfahrung, einschließlich mehr als 5 Jahre praktische Erfahrung im Aufbau, Betrieb oder Debugging von Produktions-Voice/VoIP-, SIP-, WebRTC- oder leitungsfähiger Sprach-Infrastruktur.
- Experience building or operating large-scale, distributed, real-time systems with strict latency and availability requirements.
- Experience working with telephony carriers, SIP trunk providers, or PSTN integrations at scale.
- 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.
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What we offer
- 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.
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Benefits
Work-Life-Integration
Health, Fitness & Fun
Topics You Will Work On
Job Locations
About Your Employer
Parloa Gmbh
Parloa GmbH, a tech company based in Berlin, provides support to enterprise clients looking to scale AI agents for natural customer conversations with its AI Agent Management Platform AMP. The company serves global brands such as Allianz, Booking.com, SAP, and Swiss Life, enabling over a billion customer interactions. With offices in Berlin, Munich, and New York, Parloa employs around 350 staff and is expanding internationally.
Description
- Company Type
- Startup
- Working Model
- Hybrid, Onsite
- Industry
- Internet, IT, Telecommunication
Principal Software Engineer
- Location
- Berlin
- Working Model
- Hybrid, Onsite
- Diversity
- Open for all genders
- English Only
- English only required
