Job Title- Java Backend Engineer – 2 HC
Location: Bangalore, India (Hybrid 3 Days onsite)

We are hiring a senior engineer to join our team focused on migrating Java applications from an Oracle backend to MongoDB. You will work across backend application code, data pipelines, sandbox environments, and production deployments. The role demands strong debugging skills, hands-on database expertise, and the ability to move rapid in a structured delivery environment.

What you will be doing
Migrate Java application logic from Oracle to MongoDB -rewriting queries, service layers, and data access code
Debug and resolve failures across application, pipeline, and database layers
Write and optimize SQL queries and translate them into MongoDB equivalents within the application
Investigate handler and pipeline failures -identify root cause, patch, and verify fixes
Manage and maintain dev, staging, and performance sandbox settings
Participate in CI/CD pipeline management -deployments, migration scripts, and environment automation




Collaborate with architects and QA teams to validate data integrity and application performance
Support production cutover activities and post-migration monitoring

Must-have skills
8+ years of experience in software or data engineering
Solid Java development -Spring Boot, REST APIs, backend services
Solid SQL skills -complex queries, joins, transactions, query optimization
Hands-on experience with Oracle as a production database
Working knowledge of MongoDB -document modelling, indexing, aggregation
Experience debugging distributed systems and data pipeline failures
Comfortable with CI/CD tools -Jenkins, GitHub Actions, or equivalent
Experience managing or working across multiple sandbox environments
Aware/ know how to use AI Tools like Claude, Chatgpt Codex , Copilot or cline.

Good to have
Prior involvement in an application migration or modernization project
Familiarity with ETL or CDC tools -Debezium, Go

📌 Java Developer Karnataka
🏢 Flexton
📍 Karnataka