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Christian Jaena

@christianjaena

Message

I build resilient financial microservices and cloud-native lending products.

Philippines

Message

At Maya Bank, I build backend microservices for Maya Easy Credit, Personal Loans, and Credit Cards. I've delivered customer-facing lending and credit features, including Loan Top-Up, payment due-date extensions, shared limits, restructuring, and custom repayment.

I design event-driven financial systems with Java, Spring Boot, AWS EventBridge, Kafka, Lambda, and Terraform. Previously at Monstarlab Philippines, I developed Java/Spring Boot services for a government project serving 1M+ users and built full-stack products with React and Node.js.

Experience

Work history, roles, and key accomplishments

Current

Java Software Engineer

Current

Maya Bank

Feb 2025 - Present (1 year 8 months)

Developed and maintained backend microservices for lending and credit products, including Maya Easy Credit, Personal Loans, and Credit Cards. Delivered customer-facing features and spearheaded the Loan Write-Off Service, improving operational workflows.

Java Spring Boot PostgreSQL AWS Lambda AWS EventBridge S3 Docker Kubernetes Terraform Kafka GitLab CI CD Liquibase OpenAPI Junit Mockito Domain Driven Design Clean Architecture Test Driven Development

Full Stack Developer

Monstarlab Philippines

Jul 2022 - Feb 2025 (2 years 7 months)

Developed backend services for a government project serving 1M+ users using Java/Spring Boot and MySQL. Maintained CI/CD pipelines and applied DevOps practices including containerization and cloud deployment.

Java Spring Boot NodeJS React Next.js TypeScript MySQL PostgreSQL Elasticsearch AWS GCP Docker Kubernetes CI CD Junit Mockito Maven Flyway GitHub

Full Stack Developer

The Career Navigator

Jul 2024 - Nov 2024 (4 months)

Built backend services integrating OpenAI API for a career-assistance platform using Spring Boot and React, improving recommendation speed and accuracy.

Spring Boot React OpenAI API