Full-Stack Software Engineer, Mobile Apps

Hiya, Inc.

Job Overview

Location

London, UK

Job Type

Full-time

Full Job Description

📋 Description

• As a Full-Stack Software Engineer at Hiya, you will own features end-to-end across the TypeScript/Node backend, iOS, and Android apps, ensuring seamless delivery from contract to rollout without handing off work at stack boundaries.
• Day to day, you will ship meaningful production code, define and defend API contracts with product and design teams, plan and iterate on non-trivial work using agentic workflows, and resolve context-related challenges in AI-assisted development.
• Hiya is a fast-growing voice security company protecting over 550 million users globally by analyzing 28+ billion calls monthly, partnering with major telecoms like AT&T, Samsung, and British Telecom EE to restore trust in voice communication.
• In this role, you will develop strong judgment in agentic systems, refine your ability to balance exploration and execution, and shape how AI is applied to real-world voice security problems through ownership and iterative learning.

Skills & Technologies

TypeScript

Node.js

GitHub

iOS

Android

Full Stack

Onsite

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Hiya, Inc.

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About Hiya, Inc.

Hiya is a leading conversational phone intelligence company that helps businesses and consumers identify and block spam calls and texts. Their platform analyzes billions of calls and texts monthly to provide real-time insights and protection against unwanted communications. Hiya's technology is used by mobile carriers, device manufacturers, and app developers to enhance the user experience and combat fraud. They offer solutions for call blocking, caller identification, and reputation management, aiming to make phone calls safer and more trustworthy for everyone. The company operates in the telecommunications and cybersecurity industries, focusing on mobile security and communication integrity.

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