Senior Software Engineer at Dinii – Tokyo | Jobyssey

Applications: candidates may apply from outside Japan. Visa sponsorship: available. Japanese: Conversational. English: Conversational. Japan Dev tags: Engineering, Web / Full-stack, React, Typescript.

About Dinii

Our mission is to “make dining more enjoyable and exciting”. Our vision is to “become the dining infrastructure for everyone”.

Food is essential for life and also a culture that brings color to it. Dinii creates an environment where everyone involved in the restaurant industry can thrive and find enjoyment.

Dinii places great emphasis on the customer perspective, with product teams even working shifts in restaurants to gain a deeper understanding of the industry. We call this culture “shift-in” — getting first-hand information with our own feet is the source of Dinii’s competitive strength.

The team is diverse, with members from high-growth ventures, consulting firms, and the restaurant industry. All board meetings are conducted in English, preparing the company to compete globally as an excellent company born in Japan.

AI Native — We Evolve Through Technology, Too

Dinii is an “AI Native” company where every employee implements AI in their daily work. Not just engineers, but HR, CS, and Sales — everyone makes full use of AI. From recruitment screening and labor processing to customer support, AI is embedded into every process, enabling overwhelming productivity with a small, elite team. We can’t credibly claim to transform the restaurant industry with technology if our own way of working is outdated — so we practice the most advanced way of working ourselves.

Five Reasons to Pay Attention to Dinii’s Engineering Now

1. AI First Development Environment
Dinii invests seriously in improving the development experience with AI. We’ve formed an AI-Ops Team to build AI products that solve internal challenges and to drive AI adoption company-wide. Every engineer is provided with a Claude Code Max 20x plan. PdMs and designers also leverage AI, practicing AI-native development across the entire product organization. AI is not just a tool, but a foundation that lets us focus on solving essential problems.

2. Transforming the Foodservice Industry
Japan’s dining market is worth 25 trillion yen. Dinii is working to fundamentally transform the entire foodservice industry with innovative solutions that support its growth.

3. The Innovation of All in One Restaurant Cloud
Starting from POS, Dinii provides an integrated set of functions restaurants need — Fintech, ES, CRM, and more. Through a wide range of products spanning ToC web apps, ToB SaaS, and payment services, we support restaurant management.

4. Product Engineering Culture
Dinii engineers take ownership of customer problems and outcomes. The entire product team has dedicated opportunities to talk with customers every quarter (customer interviews and field research) to deeply understand them. Engineers themselves define value and build with real market impact, and our organization is designed for cross-team collaboration to prevent silos. Some members even work shifts in actual restaurants to experience the field and understand the industry deeply.

5. A Continuously Growing Product and Team
Churn rate under 0.5%, ARR tripled year over year. Along with a high-quality product, the team is growing rapidly. We raised 7.46 billion yen in Series B and have global expansion in our sights.

Job Overview

Lead a team of several engineers as a Tech Lead, holding final responsibility for design, reviews, and technical decision-making.
Work closely with PdMs and designers to define business requirements and translate them into technical requirements.
Continuously manage the balance between controlling technical debt and developing new features.
Lead operational work and process improvements to keep the service running stably.

Required Skills

Experience improving a team’s development productivity by incorporating AI Coding Agents into the development workflow and designing rules, tools, and automation.
3+ years of web application development experience.
Experience autonomously carrying out the full range of development work, including implementation, design, and operations.
Experience driving project-scale feature development with ownership.
Experience collaborating with multiple teams and stakeholders, organizing discussions, and leading them to decisions.
Communication skills for product development.
Must meet one of the following:
- Japanese: Business level or higher (e.g., JLPT N1 or CEFR B2 and above)
- Japanese: Conversational level or higher (e.g., JLPT N3 or CEFR A2 and above) and English: Business level or higher (e.g., CEFR B2 and above)

Preferred Skills

Full-stack development experience, including both frontend and backend.
Experience using TypeScript, React, and React Native.
Experience in schema design and writing efficient queries for RDBs.
Experience managing cloud infrastructure on Google Cloud, AWS, etc.
Experience making technical decisions in a role such as Tech Lead.
Experience leading architecture design and the overall technical design of a system.
Experience mentoring and developing junior members.
Project management experience (schedule estimation and progress management).
Experience leading everything from discovering product issues to defining specifications.
Experience contributing to the team’s technical quality through code and design reviews.

The type of person we’re looking for

Passionate about learning new and challenging technologies.
Has a strong will and ambition to grow the product.
Motivated to listen to customer feedback and solve their issues.
Able to communicate constructively with stakeholders both within and outside the team.
Possesses a mindset of treating failures as learning for the team to grow, rather than criticizing them.
Willing to learn both Japanese and English.
Able to demonstrate leadership in driving a team in at least one of the following areas: technology, project management, or product development.
Able to deliver sustainable results to the team and product with reproducible performance.
Has an attitude of continuously learning beyond their own area of expertise, with interest in adjacent fields.

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