Front-end Engineer (Lead Engineer)

  • Remote OK - Anywhere in Japan
  • Full-time
  • August 4, 2025
Conditions
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¥8M ~ ¥18M /yr
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Apply from Japan Only
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No relocation to Japan
(No visa sponsorship from overseas)
Requirements
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Language Requirements
Japanese: Business Level
English: Not Required
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Minimum Experience
Senior or above

Description

Mission

You will primarily drive front-end technical decision-making and implementation that impacts the business and organization.
You will lead the front-end development team to create high-quality systems.

Front-end development using blockchain technology differs from standard back-end API integration processes in that it sometimes directly invokes blockchain logic (smart contracts). In these cases, numerous front-end innovations, such as business logic-like processing and caching, are required.

We are looking for a leader who will develop store and component strategies based on React development and promote development while instilling them in the team.

Datachain has two business domains: toC and toB. Both are financial, meaning mistakes are not tolerated. In addition to standard front-end implementation, such as easy-to-understand screen layouts, an easy-to-use UI, and the ability to handle blockchain-specific logic, we also require user-friendly implementation that takes into account blockchain's unique characteristics.

We are looking for a front-end engineer who can systematize complex business processes and develop optimal development strategies in the absence of best practices, all while keeping up with new technologies.

Knowledge of blockchain is not required. We are looking for a candidate with the ability to keep up with new technologies, a thorough understanding of the problem areas and advantages and disadvantages behind the technology, and the fundamental technical skills to master it.

 

Specific Duties

Provide technical leadership to maximize team results.

By working beyond technology, rather than focusing solely on the technology itself, we ensure that the team is able to use the technology optimally.

  • Implementation Skills - Ability to resolve technical bottlenecks, implementation speed, and handling non-functional requirements
  • Design Skills - Quality and architecture, technology selection, and proposing trade-offs between business realization and technology
  • Internal Team Activities - Raising team members' capabilities, supporting their performance, and fostering a highly proactive team
  • External Team Activities - Collaborating with other departments, achieving major results and resolving issues beyond the team
  • Business Commitment - Clarifying estimates and schedule risks, and the mindset and skills to see things through

Creating Systems and Culture - Communicating technology, sharing knowledge, building development processes, and a long-term value creation perspective

We aim to consistently achieve the best development results by combining the accumulation of small initiatives with initiatives that bring about drastic change.

 

About Our Challenge

Business

In the future, it is expected that all assets in the world will be digitized. While efforts to develop digital money for credit cards, points, and smartphone payments have already begun, the digitization of real-world assets (RWAs), including stocks, bonds, derivatives, and real estate—value-backed assets—is also progressing.

As the search for the optimal technology to manage information on these important assets continues, blockchain is finally entering the practical application phase. Overseas banks are adapting the technology to their in-house systems, using it for payments worth hundreds of billions of yen. There are also examples of governments issuing cash as digital money and using blockchain to manage national systems.

Amid signs of major changes in the financial system, on September 5, 2024, we launched "Project Pax," a cross-border remittance infrastructure project in collaboration with the international organization Swift and three major Japanese banks. We aim to establish a new international remittance platform with the world's first legally compliant stablecoin that can be used by banks.

 

Technology

Since its founding in 2018, Datachain has been a truly tech-driven company, conducting R&D with the goal of creating a "de facto infrastructure" through "global x deep tech" from Japan. This accumulation of technology has led to the current opportunity. However, given the market's potential impact, competition is expected to intensify in the future.

We will take advantage of this unique opportunity to create a product that will change the world. To that end, we have established a development team and are currently recruiting high-level engineers to serve as core members.

 

Front-end technologies used

TypeScript, Next.js (React), wagmi, Viem, Chakra UI, Turborepo, Renovate, Vitest, StoryBook, Hono (Node.js), etc.

 

Requirements

  • Design, development, and operation of front-end architecture for cloud environments
  • Experience driving team improvement activities and introducing new methods to the team
  • Experience discussing specifications with product managers and back-end product teams
  • Experience promoting automation, such as building a CI/CD pipeline
  • Experience developing front-end systems using a design system and a systemized workflow for collaboration with designers
  • Experience implementing and operating front-end systems with performance optimization and cache design in mind

 

Welcome requirements

  • Experience recruiting engineers and promoting technology
  • Backend development experience
  • Experience with new development or building a development team
  • Blockchain-related development experience
  • Experience with AI-based development

 

Desired profile

  • People who want to make a big difference in the world with new technology
  • People who love technology and can keep up with new knowledge, utilize technology, and drive the organization and business forward
  • People who find it rewarding to engage the organization and instill a culture that realizes the vision
  • People who understand the characteristics of software and are passionate about engineering beyond implementation
  • People who can create a vision that will benefit the organization and drive it to realization in an environment where nothing exists yet

Datachain is a startup engaged in research and development in the field known as "interoperability," which connects different blockchains, as well as the development of FinTech products.

Their research and development efforts have achieved significant results, including ranking first globally in the number of OSS releases by a third party and being the only entity in Japan to receive a grant from the "Interchain Foundation". Leveraging these technically advanced achievements, Datachain is developing products in the financial sector.

View Datachain's company page
Front-end Engineer (Lead Engineer) at Datachain
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