Java Engineer

Unissant•Washington, DC

1d•Remote

About The Position

Unissant, Inc. is seeking a Java Engineer to join its team and support a client. The role focuses on designing, developing, testing, deploying, and maintaining secure, scalable enterprise applications and services. The engineer will work with Java 25 or later, Spring Boot and Spring Frameworks, Spring Data JPA and Hibernate, Node.js and JavaScript frameworks (preferably Vue.js), Python, AWS, CI/CD pipelines, and Docker. The role also involves applying AI-assisted development in production systems and incorporating evidence-based verification, application security, and context-aware development throughout the software development lifecycle. The engineer will develop and execute unit and end-to-end tests, troubleshoot complex application, integration, deployment, and production issues, and implement corrective actions. They will collaborate with developers, architects, DevOps engineers, business analysts, testers, and other stakeholders; identify and mitigate technical risks and blockers; and manage competing priorities while meeting delivery, quality, and security commitments. The position is primarily remote, with occasional in-person participation potentially directed or approved by the client for program events. A Public Trust clearance must be obtained and maintained. A bachelor's degree is required, and candidates will undergo pre-employment screening.

Requirements

At least 5 years of IT development experience with Java programming using Spring Boot and Spring Frameworks.
At least 5 years of Java programming experience, with Java 25 as the minimum version.
Deep understanding of Spring transaction semantics, including proxies, propagation, and rollback-only behavior.
Experience with Spring Data JPA and Hibernate beyond CRUD, including Specifications, EntityGraph versus JOIN FETCH, paginated fetch-join count queries, lazy loading, and projections.
At least 3 years of experience with Node.js libraries; Vue.js is preferred.
Python programming experience.
Experience using AI-assisted development for production systems.
At least 3 years of experience deploying application code in an AWS environment.
At least 3 years of hands-on experience with AWS services, including Lambda, API Gateway, ECS, Step Functions, RDS, Elasticsearch, Redis, and related cloud services.
Experience with CI/CD pipelines, such as GitHub Actions.
Working knowledge of Docker images and containerization.
Strong analytical development skills, including evidence-based verification, application security, and a context-aware development mindset.
Strong test engineering mindset, including developer unit and end-to-end testing.
Ability to identify risks proactively, recommend mitigation actions, drive risks to resolution, and mitigate team blockers.
Ability to manage competing tasks, collaborate across functional areas, and independently present and communicate analytical findings.
Bachelor's degree.
Excellent verbal and written communication skills; ability to present proposals and performance data and interface with all organizational levels.
Ability to write clear, concise creative content in a highly confidential manner.
Ability to obtain and maintain a Public Trust clearance.

Nice To Haves

Knowledge of JSP, JSTL, and displaytag.
At least 3 years of Python programming experience.
Experience with build and automation tools, including Maven multi-module, Bash scripting, Python guards, and Docker.
Production ownership experience, including defect triage, incident diagnosis, ECS deployments, and coverage gates.
Current or recent NIH badge.

Responsibilities

Design, develop, test, deploy, and maintain secure, scalable enterprise applications using Java 25 or later, Spring Boot, and Spring Frameworks.
Develop and maintain applications using Spring transaction semantics, including proxies, propagation, and rollback-only behavior.
Design and develop data access solutions using Spring Data JPA and Hibernate beyond CRUD, including Specifications, EntityGraph and JOIN FETCH approaches, paginated fetch-join count queries, lazy loading, and projections.
Develop and maintain web application components using Node.js and JavaScript frameworks, preferably Vue.js.
Develop and maintain applications and services using Python.
Develop and deploy cloud-based applications in AWS, using services such as Lambda, API Gateway, ECS, Step Functions, RDS, Elasticsearch, and Redis.
Build and maintain automated CI/CD pipelines and support application containerization with Docker.
Apply AI-assisted development techniques in production systems.
Apply evidence-based verification, application security, and a context-aware development mindset throughout the software development lifecycle.
Develop and execute unit and end-to-end tests.
Troubleshoot complex application, integration, deployment, and production issues and implement corrective actions.
Collaborate with developers, architects, DevOps engineers, business analysts, testers, and other stakeholders throughout the software development lifecycle.
Identify technical risks, dependencies, and team blockers; recommend mitigation strategies and drive issues through resolution.
Manage competing development priorities while meeting sprint, release, quality, security, and project delivery commitments.