Senior Fullstack Developer Java, Kotlin

POSITION IDENTIFICATION

• Job Title: Senior Fullstack Developer Java + Kotlin
• Department: Software
• Division (if have): DevCode
• Reporting line: Chief Operating Officer
• Scope of Responsibility (for managerial level and above): None
• Company: Vinashore Co., Ltd (Serdao Group)
• Work location: Vinashore Villa - 5D Phung Khac Khoan, Sai Gon Ward, HCMC
• Working time: From 4pm or 5pm to 1am or 2am, Monday to Friday; 2 weekoffs/ week, Saturday and Sunday
• Start date: ASAP
• Engagement: Long-Term
• Language: English is professionally necessary
• Salary: Negotiable
• Locals & Expats are welcome
• Position Summary:
• The Senior Fullstack Developer Java + Kotlin will join a fintech project serving international markets. The product is business critical, with strong requirements on performance, security, and UX quality. You will work closely with backend, product, and QA teams in an agile environment.

KEY RESPONSIBILITIES

• Support and coordinate technical and business aspects of software development activities, including requirement analysis, design, and implementation of applications.
• Serve as a principal developer in project teams, providing expert guidance on business and technical matters.
• Take on additional responsibilities as needed, fostering team cohesion and collaboration.
• Act as a point of contact for technical issues across multiple projects and work streams.
• Proactively plan and strategize with the team, identifying potential issues and suggesting workable alternatives.
• Mentor technical staff, assist where needed, and lead efforts in resolving technical challenges.
• Guide and participate in recruiting top technical talent for the team.

PROFESSIONAL ATTRIBUTES

• Responsibility & Ownership: Taking full accountability to resolve customer issues-even when not directly responsible - and following through without unnecessary escalation
• Emotional Resilience & Self-Control: Staying composed and courteous even when confronted with difficult customer interactions
• Professionalism & Respect: Maintaining proper conduct, etiquette, and attire - especially in person or field-based support roles - to reinforce company reputation
• Empathy & Customer-Centric Attitude: Demonstrating genuine concern for customer frustrations and expectations, helping foster trust and loyalty
• Adaptability to Feedback & Improvement: Openly receiving feedback and striving to improve support processes, documentation, and personal techniques
• Team Collaboration & Support: Working effectively with colleagues, sharing solutions, and contributing to a strong support culture

• 5+ years of Full-stack experience with a strong focus on backend applications development.
• Strong experience in Java (Spring Boot & Micronaut), RESTful APIs, and microservices architecture.
• Hands-on experience with AWS services such as Lambda, S3, DynamoDB, API Gateway, ECS, and CloudFormation.
• Proficiency in MySQL, Oracle, and ORM technologies (Hibernate, JPA2).
• Familiarity with Splunk and observability tools (Datadog, Mixpanel, etc.).
• Familiarity with containerization and orchestration tools (Docker, Kubernetes).
• Strong understanding of CI/CD, security, and testing practices.
• Excellent communication skills with having consulting mindset.
• Experience mentoring engineers and contributing to team growth.

NICE TO HAVE

• Experience in fintech or financial systems
• Familiarity with CI/CD pipelines
• Exposure to design systems or component libraries

• Join a French tech company in Vietnam, combining European standards with local agility
• Work in a truly international environment, with 13+ nationalities collaborating daily
• Contribute to projects serving clients in 32 countries worldwide
• Be part of long term, meaningful SaaS projects with real business impact
• Grow your skills through mentoring, code reviews, and collaboration with experienced teams
• Enjoy a professional, supportive, and people focused work culture
• Visa, resident card, and work permit provided for expat profiles working in Vietnam