Digital Audio Signal Processing Engineer (Voice AI)

TL;DR

Senior Digital Audio Signal Processing Engineer (Voice AI): Owns and drives the development of core audio simulation and augmentation systems for a Voice AI company with an accent on modeling realistic audio signal chains and translating customer audio into simulation assumptions. Focus on developing efficient DSP implementations and building tooling for configurable and reproducible audio simulations.

Location: On-site in Berlin, Germany

Company

hirify.global is building the reliability layer for Voice AI, closing the gap between raw audio input and reliable machine understanding in production.

What you will do

• Own the design and long-term evolution of a core audio simulation and data generation system.
• Model realistic audio signal chains, spanning acoustic environments, capture conditions, and downstream processing.
• Translate real customer and production audio into simulation assumptions, identifying what matters perceptually and statistically.
• Develop efficient DSP implementations that work in real-time and streaming use cases as well as in large-scale offline data augmentation.
• Build and maintain tooling and abstractions that make complex audio simulations configurable and reproducible.

Requirements

• Deep expertise in digital audio signal processing and acoustics, with a strong mathematical foundation and proven experience designing and implementing realistic audio simulations and transformations.
• Strong systems engineer: proficiency in Python for rapid development and tooling, and the ability to write highly efficient low-level code in at least one of Rust, C, or C++.
• Startup mindset: comfortable with ambiguity, takes ownership, and makes pragmatic engineering decisions, with prior experience in a start-up or highly dynamic, product-driven environment.

Nice to have

• Solid understanding of modern machine learning development workflows and how data and evaluation choices influence ML system behavior.

Culture & Benefits

• Opportunity to work at a rapidly growing Voice AI startup, backed by top investors.
• Competitive salary package, additional benefits, and stock options.
• Dynamic, fast-paced environment with passionate and collaborative colleagues.
• Groundbreaking startup at a pivotal growth stage, making a real difference in how people experience audio.
• Take full ownership of projects and ship fast.
• Work with a world-class team of engineers and builders with ample room for professional growth.