Java Software Engineer

Bespoke Technologies; Virginia; On-site; USD 140,000 - 190,000; Full time

Job summary

Bespoke Technologies is seeking a Java Software Engineer with 10+ years of experience to design and implement secure, scalable Java EE applications. The role focuses on core Java development, LDAP-based security, and API integration within Linux environments.

The candidate will work with Tomcat deployments, PKI/certificates, and front-end tech such as JSP and jQuery to support robust web interfaces.

Qualifications

• Expert-level knowledge of Core Java (not Spring Boot) and related Java ecosystem.
• Experience with LDAP authentication and custom LDAP solutions.
• Proficiency with SSH/Putty and Linux command-line tools.
• Developing REST APIs with secure cert-based requests and scalability.
• Experience with JDBC/DAO and MariaDB/MySQL without a framework.
• Experience deploying on Apache Tomcat and configuring Tomcat connectors.
• Front-end development with JSP, AJAX, jQuery, HTML/CSS.
• Jakarta Servlet API and servlet lifecycle management.
• Knowledge of PKI, X.509, OpenSSL, and certificate handling.

Responsibilities

• Will analyze user needs to determine technical requirements.
• Write clean, maintainable Java code and document interfaces.
• Collaborate with security teams on encryption and PKI implementations.
• Assist in deployment and maintenance of applications on Tomcat.

Skills

Core Java

Java 17+

REST API

LDAP authentication

SSH/Putty

Linux

JDBC

Tomcat

JavaScript/jQuery

PKI/OpenSSL

X.509 certificates

JCA

Encryption: AES/RSA/ECC

Quartz scheduling

Git/GitHub

MariaDB/MySQL

Jakarta Servlet API

Apache HTTP Server

Tools

Eclipse IDE

OpenSSL

Putty

GitHub/Git

Apache Tomcat tools

Job description

BT-463 – Java Software Engineer

Skill Level: Subject Matter Expert

Location: Dulles, VA

Experience: 10+ years

Required skills:

• 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 with 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.
• Experience 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.

Desired 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.