The Opportunity

EmbedIT Vietnam is looking for a Senior Java Kotlin Back-end Engineer to design and build modern, scalable backend systems for financial platforms used across Southeast Asia.

You will work in a cloud-native, microservices environment, contributing to high-performance systems handling large-scale transactions. This role offers strong ownership, exposure to modern technologies, and collaboration with international engineering teams.

Key Responsibilities

Design, develop, and maintain backend services using Java (17+/21+) and Kotlin
Build and enhance microservices-based architectures with Spring Boot
Develop reactive and high-performance APIs (WebFlux is a plus)
Collaborate with cross-functional teams to deliver scalable and reliable solutions
Write clean, maintainable, and well-tested code following best practices
Participate in system design discussions and architecture improvements
Optimize performance, scalability, and system reliability
Support deployment, monitoring, and troubleshooting in production environments
Mentor junior engineers and contribute to team knowledge sharing

Qualifications & Experience

Mandatory

5+ years of backend development experience
Strong hands-on experience with Java and Spring Boot
Exposure to Kotlin in production
Solid experience working with microservices architecture
Experience with REST APIs and distributed systems
Familiarity with containerization (Docker, Kubernetes)
Experience with relational or NoSQL databases
Understanding of caching mechanisms (Redis, Caffeine, or similar)
Good problem-solving skills and ability to work in agile environments

Nice to have

Experience with Spring WebFlux (reactive programming)
Exposure to cloud platforms (Azure preferred)
Experience with Azure Cosmos DB or other NoSQL/document databases
Knowledge of CI/CD pipelines and DevOps practices
Experience with monitoring tools (OpenTelemetry, logging, tracing)
Familiarity with Quarkus

Join EmbedIT family and enjoy

20+ years of engineering expertise delivering large-scale IT transformation and fintech solutions.
Impact platforms used by 140M+ users across Europe and Asia.
Join a 500+ global engineering community working across 8 time zones.
Build and scale modern systems with 2700+ services running on Kubernetes and cloud-native architectures.
Work in a truly international environment, collaborating with teams across Czech Republic and APAC.
Hybrid and flexible working setup that supports work-life balance.
Competitive compensation package including base salary, 15-18 days of annual leave, 13th-month salary, and performance bonuses.
Premium healthcare insurance, 24/7 accident coverage, and annual health checkups.
Extra perks including meal allowance, phone allowance, company laptop, and parking support.

Senior Back-end Engineer (Java, Kotlin, Spring WebFlux)