Sr. Application Development Engineer

Titan Technologies is a company that designs, builds, integrates, and manages innovative solutions and software applications. They are seeking a Senior Application Development Engineer to support cybersecurity efforts for DHS USCIS systems by designing and implementing enterprise cybersecurity solutions and improving security posture across all layers of the network.

Responsibilities:

• Lead the architecture, design, development, and deployment of secure, scalable web applications and services, including new features, modules, and system enhancements
• Maintain and optimize existing applications by troubleshooting defects, resolving performance issues, and ensuring reliability, availability, and maintainability
• Develop and manage server-side solutions using Ruby on Rails, including business logic, database interactions, authentication, API integrations, and back-end services
• Design, implement, and optimize databases, data models, and queries to ensure data integrity, performance, and protection of sensitive information
• Build and maintain RESTful APIs and system interfaces to enable secure integration across enterprise platforms and external services
• Implement automated testing, debugging, and quality assurance practices, including unit, integration, and performance testing, to ensure high-quality, resilient code
• Collaborate with cross-functional teams and provide technical leadership through code reviews, standards enforcement, and mentoring of junior developers
• Integrate cybersecurity principles into application and enterprise architectures by applying secure coding practices, access controls, encryption, monitoring, and risk-based safeguards aligned with federal requirements
• Lead the evaluation and design of secure network, system, and data architectures by embedding security-by-design principles, establishing enterprise data protection strategies, and automating security operations and large-scale event analysis using scripting and Security Information and Event Management (SIEM) frameworks
• Conduct technical research, standards and product evaluations, and configuration assessments to support federal compliance requirements; develop and maintain Enterprise Architecture and System Lifecycle documentation, and recommend configuration or architectural improvements to remediate vulnerabilities and strengthen the overall security posture

Requirements:

• 5+ years of experience developing enterprise-level applications using Ruby on Rails, with full-stack experience including front-end development (HTML5, CSS, jQuery) and back-end services; able to read and troubleshoot Rails error and build logs independently (Harness experience a plus)
• 5+ years of experience in PostgreSQL environments, including deep knowledge of complex queries, indexing, and query optimization
• Extensive experience with full-stack testing using RSpec and Capybara
• Proficient in REST API architecture, AWS Security, Splunk, and implementation of secure coding and network best practices
• Experience with security and monitoring tools such as Tenable, CrowdStrike, NewRelic, and Flexera
• Ability to work fully remotely while maintaining high productivity, reliability, and delivering high-quality code
• Ability to get and maintain Public Trust Security Clearance or Existing Public Trust Clearance preferred
• A Bachelor's degree in Computer Science, Information Management or Engineering, or other comparable degree or experience, which must be approved in advance by the Government Program Manager