AI Engineer – Voice

🕒 May 29

🌐 Germany, United Kingdom – Remote

🇩🇪 Germany – Remote 🇬🇧 United Kingdom – Remote

⏰ Full Time

🟡 Mid-level

🟠 Senior

🤖 AI Engineer

👻 Ghost score 39%

What it means: how likely this posting is sitting open without active hiring.How to read it: 60% or higher means we think this is a ghost. Lower scores are less of a worry.How we score it: age, reposts, open roles vs team size, how fast jobs close, and whether pay is listed.Fine print: an estimate from public data, not a judgment of the company. Real jobs can score high, so treat it as a hint, not a fact.

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JUPUS

WebsiteLinkedInAll Job Openings

51 - 200 employees

⚖️ Legal

💼 Consulting

🤖 Artificial Intelligence

💰 $7.3M Seed Round - Jupus on 2025-05

Legal • Consulting • Artificial Intelligence

JUPUS is a German SaaS company that provides an AI-powered legal secretary platform for law firms. Its product centralizes client intake across web chat, phone, and email, automates digital questionnaires, extracts and generates legal documents (e. g. , powers of attorney, mandate agreements), offers an AI answering machine and chatbot, online appointment booking, and integrates with law firm software. Designed to be GDPR and professional-law compliant, JUPUS aims to reduce administrative effort, increase qualified mandates, and free up billable time for legal teams.

📋 Description

• Architect and implement production-ready generative voice AI solutions within JUPUS’s product suite • Develop voice-based AI systems integrating ASR/STT and TTS into conversational workflows • Design and optimize real-time voice agent workflows, balancing latency, reliability, and conversational quality • Architect and implement generative AI and LLM-based solutions powering voice experiences end-to-end • Implement evaluation, testing, and observability for AI systems • Establish best practices for AI development, testing, and deployment across products • Work hands-on as a core technical contributor in a small, fast-moving team • Work closely with product, design, and engineering teams to integrate AI capabilities into product workflows • Partner with stakeholders to define and improve user experiences across voice, telephony, and AI-driven interactions • Translate complex AI concepts into practical product features and communicate them to technical and non-technical stakeholders • Own, maintain, improve, and expand the phonebot platform and voice infrastructure • Report to the AI Lead and collaborate with the Head of Engineering and product teams

🎯 Requirements

• 3+ years of software engineering experience • 1–2+ years of hands-on experience building and operating production Voice AI systems • Proven experience building and shipping production phone agents handling real users and real phone calls • Hands-on experience with at least one major voice-agent framework or provider such as LiveKit Agents, Vapi, Pipecat, Retell, Daily Bots, Bland, OpenAI Realtime, Twilio, Telnyx, Deepgram, Soniox, ElevenLabs, or Cartesia • Strong understanding of the complete voice pipeline, including STT, LLM orchestration, TTS, turn-taking, interruption handling, and latency optimization • Strong understanding of telephony concepts including PSTN, SIP, and WebRTC • Experience building LLM-powered products end-to-end, including prompt engineering, RAG, tool/function calling, model selection, and evaluation • Experience with LLM observability and evaluation tools and designing evaluation pipelines for AI systems • Strong programming skills in Python and solid software engineering practices • Experience implementing AI systems in real production environments, not purely research or academic settings • Experience operating high-volume outbound calling systems, including concurrency management, retries, and compliance considerations • Experience deploying OpenAI Realtime API or Gemini Live into production environments • Experience with voice evaluation and observability platforms or custom evaluation frameworks • Fluency or working proficiency in European languages such as German, French, Spanish, or Italian • Experience contributing to or participating in voice AI communities and open-source projects • Must be located in the CET -2/+2 timezone • Must not require relocation or visa sponsorship

🏖️ Benefits

• Foundational Impact – Help build and scale the core AI capabilities of JUPUS from the ground up • Technical Ownership – Work directly on the systems powering AI features across multiple products • Growth Environment – Build production AI systems at the cutting edge of generative AI and agentic workflows • Leadership Visibility – Flat hierarchy with direct access to the Head of Engineering and CTO, reporting to the AI Lead • Fully Remote – Enjoy the flexibility of working from anywhere • Top Equipment – State-of-the-art MacBook plus all the accessories you need • Wellbeing Perks – Urban Sports Club membership to support your healthy lifestyle