Top Secret/SCI Software Engineer - Java, PKI & LDAP

Probity Inc.; McLean (VA); On-site; USD 140,000 - 180,000; Full time

Job summary

Probity Inc. in the United States is seeking a senior Java developer with active TS/SCI clearance with polygraph to design, implement, and secure Java-based services. You will work on PKI-enabled REST APIs, LDAP integrations, and secure backend tooling in a Linux/Tomcat environment.

Responsibilities include building scalable services, managing certificates, and collaborating with stakeholders to meet mission-critical requirements while ensuring code quality and security compliance.

Qualifications

• LDAP auth experience with custom LDAP-based solutions.
• SSH-based tools and applications on Linux.
• Linux system administration and CLI proficiency.
• Java REST API development with secure requests and scalability.
• JDBC/DAO with MariaDB and custom DB tools.
• Tomcat configuration and Apache HTTPD management.
• Jakarta Servlet API lifecycle and handling.
• Java Base64 usage and limitations.
• Knowledge of JCA and crypto APIs (AES, RSA, ECC).
• Quartz scheduling with Core Java.
• Git/GitHub version control.
• PKI infrastructure, X.509 handling and OpenSSL key mgmt.
• Strong problem solving, communication, and collaboration.

Skills

LDAP auth

SSH tools

Linux admin

Java REST API

JDBC/DAO

Tomcat/Apache

Jakarta Servlet

Java cryptography

AES_RSA_ECC

Quartz scheduling

Git/GitHub

PKI security

X.509 handling

OpenSSL

Analytical thinking

Communication

Requirements analysis

Clean code

Tools

Tomcat

HTTPD

MariaDB

OpenSSL

Job description

Probity Inc. in the United States is seeking a senior Java developer with active TS/SCI clearance with polygraph to design, implement, and secure Java-based services. You will work on PKI-enabled REST APIs, LDAP integrations, and secure backend tooling in a Linux/Tomcat environment.

Responsibilities include building scalable services, managing certificates, and collaborating with stakeholders to meet mission-critical requirements while ensuring code quality and security compliance.