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About the Role

In this role, you will drive the design, development, and release of web services that reach millions of SmartNews users, using a modern web stack and fully leveraging AI. We are looking for engineers who not only leverage AI in their development, but who can also think critically about AI-produced implementations, spotting performance, security, and maintainability risks. You will have a product mindset, identifying user needs and business pain points to propose and build solutions. Strong communication skills are essential for collaborating with various teams, and you will own projects end-to-end.

Responsibilities

Design, build, and deploy web services and their backends using TypeScript, Next.js/React, and Knative/Kubernetes, owning them end to end — from concept through production operation, quality and performance monitoring, and on-call.
Accelerate development with AI / agentic coding tools, and build the harness that automatically verifies the correctness, performance, security, and maintainability of the resulting code.
Lead architectural and technical decisions, critically evaluating whether human or AI-authored implementations are the right solutions to the problem.
Proactively envision experiences that help users discover quality information and deepen their understanding of it, then propose, build, validate, and ship them.
Identify pain points in the work of our business teams, and design, build, and iterate on tools that make them more productive.
On projects that extend beyond our team, shape requirements and drive them to release by earning the cooperation of product managers, designers, and other engineering teams.

Requirements

3+ years of professional software development experience, with strong proficiency in TypeScript and modern web frameworks (e.g., Next.js / React), and a solid enough grasp of web fundamentals (performance, security, browser behavior) to design and evaluate the architecture of a production service.
Hands-on experience with AI / agentic coding tools with the ability to judge whether their output is fundamentally correct rather than taking it at face value, and to encode that judgment into tests and automated verification.
Product mindset focused on "what should we build?" You can independently pitch UX or internal tool fixes and align cross-functional teams to get them shipped.
Business-level communication proficiency in both English and Japanese (technical discussions are in English, while collaboration with product and business stakeholders for the Japanese market is in Japanese).

Skills

TypeScript
Next.js/React
Knative/Kubernetes
AI / agentic coding tools
Performance optimization
Security
Browser behavior
Product mindset
Communication skills
Kubernetes / Knative operation
LLM-powered product features
Internal tools development
A/B testing
Full-stack development

Location

Tokyo

Work Type

Onsite

Experience Level

3+ years of professional software development experience

Benefits

Support at SmartNews Tokyo office
Annual health check-ups
All medical and social insurance applicable under Japanese labor law

About the Company

SmartNews, Inc. was established in June 2012 with the mission to "Deliver quality information to people who need it worldwide." We develop the news app "SmartNews" in Japan and the US, boasting one of the largest user bases for a news app in Japan.
Since late 2023, we launched our first subscription service, "SmartNews+". Together with our subsidiary, SlowNews, we are focused on delivering quality journalism and diverse content to as many users as possible.
We continuously analyze vast amounts of information worldwide day and night. With our algorithms and strong partnerships with over 3,000 media partners domestically and internationally, we deliver quality information effectively to users through a comfortable interface optimized for smart devices.
SmartNews has offices in Tokyo, Osaka (Kansai Office), Palo Alto, New York, and Singapore. We invite those who wish to join us as a global startup and achieve our mission to apply.