Software Engineer SME

Dezign Concepts LLC•Sterling, VA

6d•Onsite

About The Position

We are seeking support for an information technology program that supports a mission operations system responsible for securely processing, disseminating and storing data. Requires strong Java development (Java17 or later), Confluence, JAVA EE development experience or Jakarta; PKI SSL/TLS. No cloud experience required. This job requires an existing Top Secret Clearance and Polygraph.

Requirements

Must Be a US Citizen
Active Top Secret SCI with Poly
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
Experience with Linux system administration and command-line tools
Experience w/ Java REST API development, and API secure requests using application certificates and scalability for user activity monitoring
Experienced w/ JDBC, DAO pattern and configuration using MariaDB (MySQL) and custom database tools and scripts – connection pooling without framework
Experience deploying applications on Apache Tomcat, configuring Tomcat connectors, and managing HTTPD (Apache HTTP Server)
Experience w/ front-end development w/ JSP, AJAX, jQuery, JavaScript, HTML and CSS design for web presence and back-end development;
Experienced writing Jakarta Servlet API, including servlet lifecycle, request and response handling, and session management.
Experience w/ 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.

Nice To Haves

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

Responsibilities

Design and develop tools that integrate with commercial applications.
Design and develop collaborative tools, data manipulation techniques, data visualization techniques, and directory services.
Provide operations and maintenance of operational systems.
Modify existing software to correct errors, allow it to adapt to new hardware or software, or to improve its performance.
Analyze user needs and software requirements to determine feasibility of design within time and cost restraints.
Consult with customers about software system design and maintenance.
Develop and direct software system testing and validation procedures, programming, and documentation.
Confer with systems analysts, engineers, programmers and others to obtain information on project limitations and capabilities, performance requirements and interfaces.
Compile and write documentation of program development and subsequent revisions, inserting comments in the coded instruction so others can understand the program.
Write, update, and maintain computer programs or software packages for receiving, transmitting, processing and storing mission data.
Consult with managerial, engineering, and technical personnel to clarify program requirements.
Identify complex problems and review related information to develop and evaluate options and implement new ones.
Test, debug, and refine the computer software to produce the required product.