We are Unlock Design, a recruitment agency based in Japan, and the job description below is an opportunity with one of our forward-thinking client companies. We aim to ensure a trustworthy and considerate experience for our candidates, emphasizing their privacy and long-term career goals. See our full promise and approach by visiting https://ud-

【Basic Information】

Client ID: 126000

Job ID: 1392

*This position is with Link Processing Co.,Ltd.

Position: マルチスタックエンジニア_

Location: Tokyo

Salary: 5M-7.4M JPY

Contract type: Permanent

Who we are

私たちは、金融・Fintech領域を起点に新しい事業やプロダクトを生み出すことで、より便利でスマートな世界を目指すDXカンパニーです。世界では今、様々なサービスに決済や送金などの金融機能が組み込まれ(Embedded Finance)、これまでにない価値や体験が生まれています。私たちは、日本社会全体のキャッシュレス・DXをリードする存在として、日々、社会の変革を推し進めています。

English Here:
We are a DX company aiming to create a more convenient and smart world by starting new businesses and products in the financial and fintech sectors. In the world today, various services incorporate financial functions like payments and money transfers (Embedded Finance), leading to the creation of unprecedented value and experiences. We strive to be a leader in promoting cashless and DX across Japanese society, driving societal transformation day by day.

Roles and Responsibility

当社が開発・運用するシステム全般において、アーキテクチャ検討、設計、実装・テスト、運用環境構築まで幅広く担当いただきます。 サーバサイドからスマートデバイスアプリまで幅広い開発領域に携わることが可能です。

【具体的には】

• サービスにおける機能改善、新機能開発における設計・開発・運用保守
• コーディングなど技術的問題の解決・品質確保等の開発チームにおけるの技術面でのリード
• 仕様書、設計書のドキュメント作成およびレビュー
• 機能開発における改善/技術提案
• 生産性、品質向上のためのCI/CD 導入・刷新を通じたPDCA サイクルの推進

【得られる経験】

• フロー×ストック収益とハイブリッドなビジネスモデルのため安定した事業基盤のもとで技術的なチャレンジができる
• 自治体・地方銀行へのキャッシュレス推進は商店街活性化にも繋がるなど地方生に直結する業務を経験できる
• フロントエンド〜バックエンド、インフラなど1つの技術に閉じずにフルスタックな成長ができ、ミッションクリティカルな決済システムにおいて、日々進化するスマートデバイスやクラウドの最新技術やセキュリティをキャッチアップしながら、スピード感のあるプロダクト開発に携わることができます。
• クラウド技術を活用したサーバーレスなシステム構築や運用自動化など、システムの高度化にチャレンジできます。
• DevSecOpsの推進はもちろん、それに向けたソリューション選定・技術検証を経験することができます。
• English here You will be responsible for a wide range of tasks related to the architecture, design, implementation, testing, and operational environment construction for the systems developed and operated by our company. You will have the opportunity to work in diverse development areas, ranging from server-side to smart device applications. [Specific Responsibilities]
  • Design, development, and operational maintenance for feature improvements and new feature development in Anywhere.
  • Technical leadership in the development team, including solving technical issues through coding and ensuring quality.
  • Documentation creation and review of specifications and design documents.
  • Improvement/technical proposals for feature development.
  • Promoting the PDCA cycle through the introduction and revitalization of CI/CD for productivity and quality improvement.
  [Experience Gained]
  • The ability to undertake technical challenges under a stable business foundation with a flow × stock revenue and a hybrid business model.
  • Experience in tasks directly linked to local communities, such as promoting cashless transactions to local governments and regional banks, contributing to the revitalization of shopping districts.
  • Full-stack growth without being confined to a single technology, covering front-end to back-end, infrastructure, etc. In a mission-critical payment system, you can engage in fast-paced product development while catching up with the latest technologies and security in smart devices and the cloud that evolve daily.
  • Challenges in building and operating serverless systems and automation using cloud technology for advanced system development.
  • Promotion of DevSecOps and the experience of selecting solutions and technical verification for its implementation.

Minimum Requirements

• スマホアプリもしくはWebアプリケーションの要件定義〜設計開発〜テストまでの一連の実務経験 2年以上
• 開発環境などインフラ・DB設計構築経験
• エンジニアチームの技術リード経験
• 仕様書作成などドキュメント作成力
• English here
  • Over 2 years of practical experience in the entire process of requirements definition, design development, and testing for either smartphone applications or web applications.
  • Experience in infrastructure and database design and construction, including development environments.
  • Experience leading a technical team of engineers.
  • Documentation skills, including the ability to create specifications and other documents.

Preferred Requirements

• ミッションクリティカルや大量トランザクションなどの要件を満たすアプリケーションの設計・開発・テスト・運用経験
• FlutterやReact Nativeを用いたクロスプラットフォーム開発の経験
• DevOps や Jenkinsなど活用したCI/CD に向けた技術選定や導入・運用経験
• Dockerなどのコンテナ技術を用いたサーバレス/マイクロサービスアーキテクト経験
• セキュリティ対策実装の知識・経験
• コンピュータサイエンスに対する基礎知識(学士・修士相当)
• English here
  • Experience in designing, developing, testing, and operating applications that meet requirements such as mission-critical and high-volume transactions.
  • Experience in cross-platform development using Flutter or React Native.
  • Experience in technical selection, implementation, and operation of CI/CD using DevOps tools like Jenkins.
  • Experience in serverless/microservices architecture using container technologies such as Docker.
  • Knowledge and experience in implementing security measures.
  • Fundamental knowledge in computer science (equivalent to a bachelor's or master's degree).

Tech Stacks

言語: Java, Kotlin, Swift, Objective-C, Flutter(Dart), C#, C++, C, Python, PHP
インフラ: AWS, オンプレミス
ミドルウェア: Apache, NGINX, AWS Lambda, Hashicorp Vault, HAProxy, Corosync, Pacemaker, Redis, HULFT, Athena, QuickSight
DB: AWS Aurora, PostgreSQL, MySQL
Monitoring: CloudWatch, PagerDuty, Crashlytics
環境: Terraform, Docker, AWS CodePipeline, Github, Firebase

Conditions / Benefits

Employment system: Full time

Location: Chiyoda-ku, Tokyo

• Approximately 5 minutes' walk from Kojimachi Station (Exit 2), 8 minutes' walk from Yotsuya Station, 9 minutes' walk from Akasaka-Mitsuke Station (Exit D), and 10 minutes' walk from Nagatacho Station (Exit 7)

Annual Salary: 5,000,000 - 7,400,000 JPY *based on experience, ability, and previous work experience

• Wage Structure: Monthly salary
• Salary Revisions: Twice a year
• Overtime allowance for hours worked beyond the regular schedule will be provided (depending on the job position and grade)

Hours: 9:30 - 18:30 (with a 60-minute break)

• Flextime, specialized job-type discretionary labor system, or supervisor discretion may apply based on job position and grade
  • Flextime has no core hours
• Overtime may be required beyond the regular schedule
• Saturdays, Sundays, and public holidays
• Annual paid leave (granted as per company regulations from the first day of employment)
• Refreshment leave (5 days as per company regulations)
• Year-end and New Year holidays (5 days)
• Sick leave (3 days)
• Other leave types (condolence leave, special leave, childcare/elderly care leave, etc.)

Probation Period: 3 months

【Benefits】

• Remote work support program (assistance for purchasing equipment like monitors)
• Telecommuting allowance (¥3,000 per month)
• Reimbursement of actual commuting expenses
• Health check-ups
• Employee stock ownership association
• Onboarding/internal training
• Support for extracurricular activities
• Company-wide social events
• Book purchase program (monthly limit of ¥10,000)
• Benefit station
• Support for acquiring/maintaining qualifications (*)
• Business school attendance support program (*)
• Seminar participation fee subsidy (*)
• Relocation expense assistance (*)
• Eligibility criteria apply

【Insurance】

• Employees' Pension
• Health Insurance
• Employment Insurance
• Workers' Compensation Insurance

Interview Process

1. Document Review
2. First Interview
3. Aptitude Test
4. Second Interview
5. Offer

This process is subject to change.