Check24
Germany
New
Full-Stack Developer (Backend Focus)
Programming Full-time Mid-Senior level 33m ago
- DAS
- Next.js
- PHP
- React
AI Summary
Build and own voice AI and distributed systems for customer-facing workflows. Design and operate real-time voice agents, schedulers, memory, and integrations. Requires production experience with Python/FastAPI/TypeScript, data stores, and cloud infrastructure.
Key Highlights
Build and own voice AI systems and distributed call scheduling
Extend agents across voice, messaging, and email with shared state
Develop memory, reasoning, and AI-assisted configuration tools
Improve observability, resilience, and graceful failure recovery
Requires production distributed systems and real-time AI experience
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Key Responsibilities
Build reliable voice AI systems, including retrieval-augmented generation, dynamic model routing, and evaluation of transcription systems.
Design and operate a distributed call scheduler that manages concurrency, race conditions, time zones, retries, and provider limits.
Extend agents across voice, messaging, and email, maintaining shared memory and state across real-time and asynchronous conversations.
Develop memory and reasoning systems that preserve context through customer workflows.
Build AI-assisted tools for configuring agents, diagnosing issues, and connecting to business systems such as CRMs, calendars, and email.
Improve observability and resilience by making failures traceable and ensuring graceful recovery when calls, workers, or providers fail.
Technical Skills Required
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Benefits & Perks
Equity
Visa sponsorship
Relocation support
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Nice to Have
LiveKit
Temporal
Message queues
Workflow orchestration
React
Observability platforms
Job Description
About the Role
Join a small, fast-moving engineering team building voice AI agents for customer-facing workflows. You will own projects end-to-end across applied AI, real-time audio, and distributed systems, helping turn complex customer needs into reliable production software.
What You'll Do
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