About the job
Our Mission
Hiya Inc. is focused on restoring trust in voice communication. With spam, scams, and AI manipulation eroding confidence in phone calls, Hiya’s mission is to make voice safe, useful, and human again. Each month, our AI-powered technology analyzes over 28 billion calls, protecting more than 550 million users and over 800 businesses worldwide.
We work with partners such as AT&T, Samsung, British Telecom EE, Rogers, MasOrange, Bell Canada, MasMovil, and Virgin Media O2. Together, we not only block malicious calls but also help people feel secure answering their phones.
Hiya is growing rapidly, with over 40% year-on-year expansion. As the landscape of voice threats evolves, we continue to set new standards for reliable, trusted communication on a global scale.
Role Overview: Mid-Level Backend Software Engineer
The Partner Distribution team delivers Hiya’s call profiling solutions, Connect, Protect, and Spoof Defence, to mobile operators and OEM device manufacturers around the world. Last year, we brought four new operators onto our platform, and two more joined this month. Our network is expanding quickly.
We are looking for a Software Engineer II to help us scale. This engineer will work alongside a small, agile team, tackling challenges from initial design through production. The team values iterative development and takes responsibility for its work in production.
What You Will Do
- Contribute to the development and scaling of backend services that process real-time call signals for millions of calls across a global operator network.
- Work with technologies including Scala, Kafka, Kubernetes, and AWS.
- Participate in technical decisions, code reviews, system design, and deployments.
- Collaborate closely with team members in a supportive, review-driven environment.
- Own projects from conception to production, with significant autonomy and scope.
About the Stack
- Scala for backend development
- Kafka for data streaming
- Kubernetes for orchestration
- AWS for cloud infrastructure
Location
This position is based in Budapest, HU.

