Software Engineer SME

Dezign Concepts LLC; Dulles Town Center (VA); On-site; USD 126,000 - 210,000; Full time

Benefits offered by this job

Medical

Dental

Vision

Health Savings Account

Paid Time Off

Holidays

Social Events

Employee Assistance Program

Team Building Activities

401K

Tuition Assistance

and more

Job summary

Dezign Concepts LLC seeks a Software Engineer focused on heavy Java development to support a mission operations system. Requires strong Java (17+), PKI/SSL, and LDAP-based security expertise, with no cloud experience required. Active Top Secret SCI with Poly is mandatory and federal-style collaboration is common.

Responsibilities include designing tools, data processing, and secure communications, while maintaining and validating software across Linux/Tomcat environments.

Qualifications

• Active Top Secret SCI clearance with Poly required.
• Strong Java development (Java17+) and PKI/SSL/TLS experience.
• LDAP authentication/authorization expertise.
• Experience deploying on Apache Tomcat and configuring connectors.
• Linux system administration and command-line proficiency.
• Knowledge of PKI, X.509, OpenSSL and related tooling.
• Front-end skills: JSP, AJAX, jQuery, JavaScript, HTML/CSS.
• Jakarta Servlet API development and REST API security.
• JDBC/DAO patterns with MariaDB/MySQL, no-framework pools.

Responsibilities

• Design and develop tools integrating with commercial applications.
• Create collaborative tools, data manipulation and visualization techniques.
• Provide operations and maintenance of mission data processing systems.
• Modify software for new hardware, performance improvements or fixes.
• Analyze user needs to determine feasible design within time/cost.
• Consult with customers on system design and maintenance.
• Develop testing, validation procedures, and documentation.
• Collaborate with engineers and analysts to define requirements.
• Write, update, and maintain programs for data processing and storage.
• Ensure secure data transmission and PKI-based tooling across platforms.
• Test, debug and refine software to deliver the required product.

Skills

Java development

Confluence

Jakarta/JAVA EE

PKI SSL/TLS

LDAP authentication

SSH

Tomcat

MariaDB

REST API

JDBC/DAO

JSP/AJAX/JavaScript/HTML/CSS

Jakarta Servlet API

PKI infrastructure

X.509 certificates

OpenSSL

Linux command-line

Java Cryptography Architecture

Quartz Job Scheduling

Tools

Eclipse IDE v2026

Apache Tomcat 11

OpenSSL

Putty

Job description

20250204-234-01-01

Active Top Secret Clearance with Poly Required

20250204-234-01-01

Active Top Secret Clearance with Poly Required

Salary Range: Up to $210K (salary is commensurate with education and experience)

Job Summary

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.

Please Note

This job requires an existing Top Secret Clearance and Polygraph.

TECHNICAL: (Software Engineer - heavy Java development)

Responsibilities and Duties

• 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.

Experience Needed

• Citizenship: Must Be a US Citizen
• Existing Clearance Required: 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.

Optional Skills

• 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

Benefits

• Medical
• Dental
• Vision
• Health Savings Account
• Paid Time Off
• Holidays
• Social Events
• Employee Assistance Program
• Team Building Activities
• 401K
• Tuition Assistance
• and more

Contact Us

Main Number: 1-888-663-2690 | [e-mail] | www.dezign-concepts.com

Dezign Concepts provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state or local laws.

This policy applies to all terms and conditions of employment, including recruiting, hiring, placement, promotion, termination, layoff, recall, transfer, leaves of absence, compensation and training.