Java Engineer

Unissant, Inc. delivers innovative capabilities to the agencies that keep our nation healthy and safe. We apply our domain expertise, data acumen, and technology know-how to achieve breakthrough results for our clients. Working collaboratively, we advance missions and careers through a focus on honesty, integrity, and dependability. We continuously look for talent, excited to join that effort. To learn more about our exciting organization, please visit us at www.unissant.com.

Unissant is seeking a Java Engineer to join our team and support our client.

Essential Duties and Responsibilities:

• Design, develop, test, deploy, and maintain secure, scalable enterprise applications using Java 25+, Spring Boot, and Spring Frameworks.
• Develop and maintain applications using deep Spring transaction semantics, including proxies, propagation, and rollback-only.
• Design and develop data access solutions using Spring Data JPA and Hibernate beyond CRUD, including Specifications, @EntityGraph vs. JOIN FETCH, paginated fetch-join countQuery, lazy loading, and projections.
• Develop and maintain modern 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 within AWS, leveraging services such as Lambda, API Gateway, ECS, Step Functions, RDS, Elasticsearch, Redis, and related cloud services.
• Build and maintain automated CI/CD pipelines using tools such as GitHub Actions and support application containerization using 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 with a strong test engineering mindset.
• Troubleshoot complex application, integration, deployment, and production issues and implement appropriate corrective actions.
• Collaborate with developers, architects, DevOps engineers, business analysts, testers, and other stakeholders throughout the software development lifecycle.
• Proactively identify technical risks, dependencies, and team blockers; recommend mitigation strategies and drive issues through resolution.
• Manage multiple competing development priorities while meeting sprint, release, quality, security, and project delivery commitments.

Work Experience and Job Skills:

• 5+ years of IT development experience with Java programming using Spring Boot and Spring Frameworks.
• 5+ years of Java programming experience, with Java 25 minimum.
• Deep understanding of Spring transaction semantics, including proxies, propagation, and rollback-only.
• Experience with Spring Data JPA and Hibernate beyond CRUD, including Specifications, EntityGraph vs. JOIN FETCH, paginated fetch-join countQuery, lazy loading, and projections.
• 3+ years of experience with Node.js libraries, preferably Vue.js.
• Python programming experience.
• Experience using AI-assisted development for production systems.
• 3+ years of experience deploying application code in an AWS environment.
• 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, e.g., GitHub Actions.
• Working knowledge of Docker images and containerization.
• Strong developer analytical 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 mitigating actions, and drive them to resolution; mitigate team blockers.
• Ability to manage multiple competing tasks and work collaboratively across functional areas; present and communicate analytical findings on an independent basis.

Additional Qualifications (Strongly Preferred):

• Knowledge of JSP, JSTL, and displaytag.
• 3+ years of Python programming experience.
• Experience with build and automation tooling, 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.

Education:

• Bachelor's Degree is required.

Communication Skills:

• Excellent verbal and written skills, ability to present proposals and performance data, comfortable interfacing all levels of organization.
• Ability to write clear and concise creative content in a highly confidential manner.

Clearance Requirements:

• Ability to obtain and maintain a Public Trust clearance is required.
• Current or recent NIH badge is preferred.

Travel:

• This position is primarily remote.
• The client may direct or approve occasional in-person participation for planning, transition, training, meetings, workshops, or other program events.

Environmental Requirements:

• Mainly a routine office environment.
• May be required to lift up to ten (10) pounds.
• Flexible in working extended hours.

The above statements are intended to describe the general nature and level of work being performed by the individual(s) assigned to this position. They are not intended to be an exhaustive list of all duties, responsibilities, and skills required. Unissant management reserves the right to modify, add, or remove duties and to assign other duties as necessary. In addition, where applicable and available, reasonable accommodation(s) may be made to enable individuals with disabilities to perform essential functions of this position.

Please note: Candidate(s) will be required to go through pre-employment screening.

Unissant, Inc. is a proud Equal Opportunity Employer! (EOE; M/F/Disability/Vets)