Senior Java Backend & Microservices Engineer

OpTech; United States; On-site; USD 120,000 - 160,000; Full time

Job summary

OpTech is seeking a seasoned Java developer to lead backend systems across cloud-based deployments. You will translate user requirements into scalable Java EE applications, drive architecture decisions, and collaborate with cross-functional teams.

Responsibilities include designing interfaces, implementing features, conducting tests, troubleshooting across environments, and writing clear documentation to support users. The role emphasizes Java EE, Spring, AWS, and modern microservice patterns.

Qualifications

• Hands-on experience in designing and developing applications using Java EE platforms.
• Object Oriented analysis and design using common design patterns.
• Excellent knowledge of Relational Databases, SQL and ORM technologies (JPA2, Hibernate).
• Experience in the Spring Framework.
• Experience in developing web applications using at least one popular web framework (JSF, Wicket, GWT, Spring MVC).

Responsibilities

• Defines site objectives by analyzing user requirements; envisioning system features and functionality.
• Designs and develops user interfaces to internet/intranet applications by setting expectations and features priorities throughout development life cycle.
• Determining design methodologies and tool sets; completing programming using languages and software products.
• Designing and conducting tests.
• Troubleshooting development and production problems across multiple environments and operating platforms.
• Supports users by developing documentation and assistance tools.

Skills

Java

Spring Boot

Cloud Architecture

Microservices

DDD

AWS

Terraform

SQL

ORM (JPA/Hibernate)

Spring Framework

Web Frameworks (JSF/Wicket/GWT/Spring‑

Job description

OpTech is seeking a seasoned Java developer to lead backend systems across cloud-based deployments. You will translate user requirements into scalable Java EE applications, drive architecture decisions, and collaborate with cross-functional teams.

Responsibilities include designing interfaces, implementing features, conducting tests, troubleshooting across environments, and writing clear documentation to support users. The role emphasizes Java EE, Spring, AWS, and modern microservice patterns.