Software Engineer (Java 17 - or later - development)

Software Engineer (Java 17 - or later - development)

Department

Data Analysis and Technology Services

Employment Type

Full Time

Location

Northern Virginia

Compensation

$130,000 - $260,000 / year

Description

REQUIRED

Active TS/SCI with Full Scope Polygraph

LOCATION

Full-time onsite in Dulles, VA

We are seeking a Senior‑Level Software Engineer with expert Core Java proficiency and deep command of enterprise‑grade web, API, PKI, and Linux technologies. This role demands mastery of Java 17 or higher, Eclipse IDE, JVM/JRE/JDK internals, JSP, AJAX, jQuery, and front‑end development, paired with extensive experience deploying and tuning applications on Apache Tomcat 11+ and configuring Tomcat connectors and HTTPD.

Who We Are

We offer advanced services in data science, data engineering, software engineering, AI solutions, cybersecurity, staff augmentation, and IT program management.

Passionate Integrity, Driven by Excellence

Ardent Principles offers a competitive salary range and a comprehensive, industry‑leading benefits package designed to support long‑term stability and employee well‑being. We provide more than a position—we offer a workplace committed to excellence, integrity, and mission‑focused impact. Our mission is to act as a bridge between satisfied clients and fulfilled employees, ensuring that your job and well-being are our top priorities because your satisfaction leads to the success of our clients.

Join us as we continue building the future of secure, high‑impact solutions.

Key Responsibilities

In this challenging yet rewarding role, you are an integral part of what brings our Company's mission to life. You must have the following required skills, certifications and demonstrated experience in and/or with:

SME Level

• Expert-level knowledge of Core Java (NOT Spring Boot), Eclipse IDE v2026, Java 17 or later, JVM, JRE, and JDK concepts, JavaScript, AJAX, jQuery, JSP, Apache Tomcat 11 or later, Tomcat connector, MariaDB (MySQL) v10 or latest, HTML5, CSS, JSON/XML HTTP, HTTPS, REST API, SSH, PKI, OpenSSL, Putty, Linux and LDAP.
• Extensive experience with LDAP authentication and authorization, and custom LDAP-based solutions
• Strong experience with SSH and Putty, and custom SSH-based tools and applications on Linux platform
• Linux system administration and command-line tools
• Java REST API development, and API secure requests using application certificates and scalability for user activity monitoring
• JDBC, DAO pattern and configuration using MariaDB (MySQL) and custom database tools and scripts – connection pooling without framework
• Deploying applications on Apache Tomcat, configuring Tomcat connectors, and managing HTTPD (Apache HTTP Server
• Front-end development w/ JSP, AJAX, jQuery, JavaScript, HTML and CSS design for web presence and back-end development;
• Writing Jakarta Servlet API, including servlet lifecycle, request and response handling, and session management.
• Java Base64 API, that encodes and decodes data, including its usage and limitations.
• Knowledge of Java Cryptography Architecture (JCA) and its APIs.
• Knowledge of encryption algorithms, such as AES, RSA and ECC and their usage in Java.
• Experience w/Quartz Job Scheduling Library using Core Java development.
• Experience w/ software version control tools (Git/GitHub) code repository;
• Knowledge of PKI infrastructure and secure data transmission, and custom PKI-based tools and applications
• Knowledge of X.509 certificate handling, including certificate parsing, certificate validation and certificate chaining.
• Experienced in generating, managing, and storing key pairs using OpenSSL, and RSA, troubleshooting PKI-related issues, including key pair and certificate problems.
• Strong problem-solving skills and analytical thinking, attention to detail, and excellent communication and collaboration skills with technical and non-technical stakeholders.
• Ability to analyze user needs to determine technical requirements.
• Ability to write clean, maintainable, and well-documented code.
• Shows initiative and offers ideas for new products and improvements to existing interfaces.
• Actively keeps apprised of industry technological enhancements and changes.

Highly Desired Qualifications

Other skills and demonstrated experiences that are highly desired but not mandatory to perform the work, include:

• Some experience integrating Python into web applications
• Some experience Writing Confluence plugins
• Familiar w/ Windows Active Directory Certificate Services (AD CS) – for issuing and managing key infrastructure (PKI) certificates.

What We Offer You

SCHEDULE

This is a full-time position with consultants expected to be available and working onsite in Dulles, VA during core hours.

Ready to take the next step in your career? Join us and be part of a team dedicated to driving positive change through technology. Apply now with our easy 3-minute, mobile-friendly initial application process. Your future starts here!