Java Backend Developer Expert Core Card Systems

Ensure high system reliability through monitoring, logging, and performance tuning (ELK, Prometheus).
Mentor junior engineers and contribute to code reviews and design discussions.
Implement efficient data models and optimize database performance (Oracle, PostgreSQL).
Develop and maintain unit tests and contribute to CI/CD pipelines.
Collaborate with architects and DevOps to design and implement cloud- native and secure systems on AWS.
Work closely with business teams (Product, Operations, Telesales, Customer Service) to deliver solutions aligned with user needs.
Design, develop, and maintain high- performance RESTful APIs using Java Spring Boot.
Build robust microservices that handle large- scale financial transactions.
Work with Kafka and RabbitMQ to implement event- driven architectures.

Yêu cầu công việc

Core Backend Development

Strong expertise in designing and building RESTful APIs using Java Spring Boot.
Proven experience with Java 8+ (Streams, Lambdas, Optional, Functional Programming).
Deep understanding of software design patterns and microservices architecture.

Messaging & Event- driven Systems

Hands- on experience with Kafka and/or RabbitMQ.

Database & Data Management

Proficient in Oracle and PostgreSQL databases.
Strong understanding of SQL optimization and transaction management.

Caching & Performance

Experience with Redis and caching strategies.
Proven experience building high- performance backend systems processing billions of transactions/month.

Monitoring & Logging

Familiarity with Prometheus and Grafana.
Experience with ELK stack (Elasticsearch, Logstash, Kibana).

Cloud- native Development

Experience with cloud platforms (AWS preferred).
Familiarity with 12- Factor App principles.

Development Practices

Proficient in Agile methodologies, Unit Testing, CI/CD pipelines.
Solid understanding of secure development practices.

Soft Skills

Team- oriented mindset; ability to mentor and support fellow engineers.
Strong communication and collaboration abilities.

Nice to Have

Experience working with NoSQL databases such as MongoDB or Cassandra.
Experience collaborating with international card payment organizations (Visa, Mastercard, JCB, UnionPay).
Familiarity with regulatory compliance and security standards in financial systems.
Background working with core card systems (credit card, debit card platforms).
Hands- on experience with Load Testing tools: JMeter, JProfiler, Locust, k6.
Experience applying AI- powered tools and techniques to enhance productivity and accelerate project delivery.
Experience working in the banking / financial services domain.
Experience working in a product development environment (building long- lived product lines).

See yourselves in a new light
In essence of joining our company, you will be given the scope to seize every opportunity and helped to acquire specific competencies you’ll need to succeed either you wish to go wide or go deep. Our company prides ourselves on our underpinned principle of nurturing people in not only HR policies but also in our culture. We value innovations and we need people to work on initiatives and carry on our business vision of operating excellence and market leadership.
Alongside with these, we believe our staff members deserve a good working condition, so that in addition to social health insurance you will be accessible to health and accident insurance and will be eligible to join in team building every year. We also value your efforts; for this reason, we give you both financial and non- financial rewards such as: KPI bonus, Best Initiatives, Best performer or Best manager of the year, etc.
Company&039;s Benefits

Financial support:
Wedding support
Performance rewards and awards
13th month salary + KPIs bonus
Probation with full salary
Lunch allowance
Family funeral support
Healthcare Insurance
Events and activities:
Sport Day
Family Day
Year End party
Christmas
Team Building

Cập nhật gần nhất lúc: 2025-07-30 11:40:03