Senior Java Backend Engineer - Cloud & Microservices

Optomi; Herndon (VA); On-site; USD 120,000 - 160,000; Full time

Job summary

Optomi is seeking an experienced Backend Java Developer to support a large-scale enterprise modernization initiative. You will maintain and enhance existing Java applications while helping migrate a legacy data warehouse into modern cloud-native microservices.

The role focuses on backend development, building REST APIs, addressing security vulnerabilities, and supporting AWS migration within an Agile team. Strong seniority and federal/regulatory experience are valued.

Qualifications

• 7+ years of backend Java development experience.
• Strong experience with Spring Boot, REST API development, and microservices architecture.
• Experience maintaining and modernizing legacy enterprise applications.
• Hands-on experience with AWS or another major cloud platform.
• Experience with Spring Security and application security vulnerability remediation.
• Proficiency with Spring Data JPA, JDBC, PostgreSQL, and SQL.
• Experience with Maven, CI/CD pipelines, Git, and automated deployment processes.
• Strong unit-testing experience using JUnit and Mockito.
• Must be eligible to obtain a Public Trust clearance.
• Experience within federal or regulated environments is preferred.

Responsibilities

• Design, develop, and maintain enterprise backend applications using Java and Spring Boot.
• Build, enhance, and support RESTful APIs and microservices.
• Help decompose legacy monolithic applications into cloud-native services.
• Maintain existing enterprise applications and support maintenance activities.
• Identify and remediate security vulnerabilities by upgrading libraries and components.
• Develop and maintain CI/CD pipelines and deployment processes.
• Work with PostgreSQL and other relational databases using Spring Data JPA and JDBC.
• Write unit tests using JUnit and Mockito.
• Troubleshoot production issues, perform root-cause analysis, and improve reliability and performance.

Skills

Java

Spring Boot

REST API development

Microservices

AWS

Spring Security

PostgreSQL

SQL

Maven

CI/CD

JUnit

Mockito

Git

OpenSearch

Databricks

Python automation

Tools

Spring Data JPA

JDBC

OpenSearch

Databricks

Maven

Git

Job description

Optomi is seeking an experienced Backend Java Developer to support a large-scale enterprise modernization initiative. You will maintain and enhance existing Java applications while helping migrate a legacy data warehouse into modern cloud-native microservices.

The role focuses on backend development, building REST APIs, addressing security vulnerabilities, and supporting AWS migration within an Agile team. Strong seniority and federal/regulatory experience are valued.