Speechify Inc. logo

Senior Software Engineer, Core Experiences - Fukuoka, Japan

Job Overview

Location

Fukuoka, Japan

Job Type

Full-time

Category

Software Engineering

Date Posted

May 25, 2026

Full Job Description

đź“‹ Description

  • • Collaborate with Product Teams to scope projects, reduce scope for faster customer feedback, and navigate integration/UX tradeoffs across platforms using Speechify’s cross-platform SDK.
  • • Design and implement more efficient abstractions and algorithms to optimize existing functionality, including faster loading times and more intelligent parsing of content.
  • • Ship cloud functions, lightweight backend services, and background jobs using Kotlin.
  • • Work at the intersection of product and infrastructure to build and maintain foundational services and SDKs that power Speechify’s core user experience across all platforms.
  • • Prioritize simplicity and reliability in API design and system architecture to directly enhance the end-user experience.
  • • Apply systems thinking to solve problems with end-to-end design, balancing technical depth with user-centric outcomes.
  • • Work quickly to generate ideas, evaluate options, and determine what can ship immediately versus what requires further iteration.
  • • Maintain focus in a high-growth, remote startup environment by knowing when to engage collaboratively and when to work independently.
  • • Collaborate effectively with opinionated designers, marketers, and product managers to align on technical solutions and product direction.
  • • Contribute to a product that transforms how people consume information, particularly supporting users with learning differences such as dyslexia, ADD, low vision, concussions, and autism.
  • • Operate within a hands-off management structure that empowers autonomy and deep focus to deliver high-quality work.
  • • Help shape the future of an industry at the intersection of artificial intelligence and audio, contributing to a #1 ranked product in its category.

🎯 Requirements

  • • Proficiency in Kotlin, with experience in Kotlin Multiplatform preferred
  • • Strong systems thinking and ability to design end-to-end solutions with simplicity and reliability
  • • Experience shipping cloud functions, backend services, or background jobs
  • • Proven ability to work effectively in a fast-paced, remote startup environment with cross-functional teams
  • • Experience optimizing performance through algorithmic improvements and efficient abstractions
  • • Prior experience with Google Cloud Platform (GCP) is a plus

🏖️ Benefits

  • • Opportunity to work on a life-changing product used by millions, especially supporting users with learning differences
  • • Fast-growing environment where you can help shape the company and product direction
  • • Entrepreneurial-minded team culture that supports risk-taking, intuition, and hustle
  • • Hands-off management approach enabling deep focus and autonomy
  • • Competitive salary and a friendly, laid-back atmosphere
  • • Commitment to building a strong asynchronous work culture

Skills & Technologies

Java
Kotlin
GCP
Senior
Remote

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Speechify Inc. logo
Speechify Inc.
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About Speechify Inc.

Speechify provides text-to-speech software that converts written text into natural-sounding audio. The platform supports web, desktop, and mobile applications, enabling users to listen to documents, articles, PDFs, emails, and other text formats. It offers multiple voices, adjustable playback speeds, and integrations with cloud storage and productivity tools. Targeting students, professionals, and individuals with reading difficulties such as dyslexia, the service aims to improve reading efficiency and accessibility through AI-generated speech synthesis.

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