Full Stack Tech Lead (JAVA, Spring Boot,ReactJS)

Job Summary

DG FutureTech is looking for an experienced Full Stack Tech Lead with 10+ years of software engineering experience to lead the design and development of scalable enterprise web applications. The ideal candidate will have strong hands-on expertise in Java, Spring Boot and ReactJS, along with experience in REST API design, Oracle or other relational databases, application architecture, CI/CD, cloud environments, and containerized deployments. This is a hands-on Tech Lead role involving both software development and technical leadership. You will own full-stack delivery while leading and mentoring a team of approximately 35 engineers. Experience working with payment platforms, fintech, banking, or similarly regulated systems will be highly valued.

Roles & Responsibilities

• Design and develop RESTful APIs and backend business logic using Java, Spring Boot, and Spring Framework.
• Build responsive and dynamic frontend applications using ReactJS, JavaScript, HTML5, and CSS3.
• Own scalable, secure, and maintainable frontend and backend architecture.
• Design database schemas and optimize SQL queries and Oracle database performance.
• Design, consume, and integrate REST APIs and third-party services.
• Develop asynchronous processing, batch jobs, retry mechanisms, and reliable background workflows.
• Perform code reviews and establish coding and engineering standards.
• Develop and maintain unit, integration, and frontend automated tests.
• Identify and resolve application performance bottlenecks.
• Support CI/CD pipelines, cloud environments, and containerized deployments.
• Troubleshoot application and production issues.
• Collaborate with developers, QA, designers, and other stakeholders to deliver features.
• Maintain appropriate technical documentation.
• Lead a team
• Assign and review technical work and provide structured feedback.
• Mentor engineers through code reviews, pairing, and technical guidance.
• Represent the development team in architecture, design, planning, and incident discussions.

Required Skills & Experience

Backend

• 10+ years of hands-on software engineering experience.
• Strong hands-on Java development experience.
• Deep understanding of Spring Boot and Spring Framework.
• Experience designing enterprise-grade application architecture.
• Strong experience developing and integrating RESTful APIs.
• Good understanding of HTTP and API design principles.
• Experience with asynchronous processing and background workflows.
• Experience with batch processing and retry mechanisms.

Frontend

• Strong hands-on ReactJS experience.
• Modern JavaScript / ES6+.
• HTML5 and CSS3.
• SCSS / LESS.
• Responsive web application development.
• Experience with frameworks such as Material UI, Tailwind CSS, or Bootstrap.
• Familiarity with Webpack, Babel, npm, or yarn.

Database

• Strong SQL skills.
• Experience with Oracle or other enterprise relational databases.
• Database schema design.
• SQL query optimization and performance tuning.

Cloud / DevOps

• Exposure to AWS, including services such as ECS and S3.
• CI/CD pipeline experience.
• Containerized deployment experience.
• Git-based development workflows.
• Understanding of cloud-native deployment practices.

Testing

Experience with one or more of:

• JUnit
• Mockito
• Jest
• Cypress
• React Testing Library

Leadership Requirements

• Previous experience as a Tech Lead or equivalent technical leadership role.
• Demonstrated experience leading or mentoring software engineers.
• Experience managing the technical delivery of a team of approximately 35 members.
• Strong code-review and technical-design skills.
• Ability to break complex requirements into actionable engineering work.
• Ability to mentor junior engineers and improve overall team capability.
• Strong problem-solving and communication skills.
• Collaborative and proactive working style.

Nice to Have

• Experience in payments, fintech, banking, or regulated systems.
• Knowledge of checkout, tokenization, 3-D Secure, settlement, or similar payment workflows.
• TypeScript.
• Spring Batch.
• JDBC-based data access.
• Multi-module Maven builds.
• Playwright.
• Jenkins.
• AWS S3 / CloudFront.
• Figma or similar design tools.
• AI-assisted development tools such as Cursor, Claude, or similar platforms.
• Japanese language proficiency.
• Experience working with distributed or multicultural teams.

Education

Bachelors degree in Computer Science, Software Engineering, or a related technical discipline.

About DG FutureTech

DG FutureTech is a technology and digital transformation company delivering custom software and enterprise application solutions.

Our Application Development practice works across architecture, frontend and backend development, APIs, integrations, security, testing, deployment, and ongoing support.

We develop scalable, secure, and high-performance digital applications and work with customers on new application development, platform modernization, integrations, and business-critical technology solutions.

Were looking for engineers who value strong technical fundamentals, ownership, maintainable code, thoughtful architecture, and continuous learning.

If you are an experienced Java + React Full Stack Engineer looking to combine hands-on development with architecture and technical leadership, we would like to hear from you.