Title: Applications Developer III Description: Solutions³ LLC is supporting a U.S. Government customer on a large mission critical development and sustainment program to design, build, deliver, and operate a network operations environment, including introducing new cyber capabilities to address emerging threats. Solutions³ LLC is seeking a Full Stack Developer to support the design, development, and deployment of advanced cybersecurity capabilities. The Full Stack Developer will play a pivotal role in our organization's technology team. Salary Range: $112,000 - $131,000 Location: Dulles, VA Job Type: Onsite Eligibility: • Must be a US Citizen • Must be able to obtain a Secret clearance within 1 year • Must be able to obtain DHS Suitability prior to starting employment  • 8+ years of directly relevant experience in software development Responsibilities Include: • Full Stack Development • Develop, maintain, and enhance front-end and back-end components of web applications. • Automated testing and smoke testing familiarity and implementation experience. • Perform unit and integration testing to ensure software quality. • Optimize application for speed and scalability. • Collaborate with cross-functional teams to gather and refine software requirements. • Write clean, maintainable, and efficient code. • Troubleshoot and resolve software defects and issues. • Handle authentication, authorization, and session management. • Integrate with third-party services (e.g., payment processors, external APIs). • DevOps and Deployment • Set up and manage CI/CD pipelines. • Deploy applications to cloud platforms (e.g., AWS, Azure, GCP). • Monitor application performance and reliability. • Handle version control using Git and platforms like GitHub/GitLab. • Collaboration and Documentation • Collaborate with DevOps, infrastructure, and development teams to ensure seamless integration. • Document code and infrastructure changes, processes, and best practices. • Participate in knowledge sharing and mentorship of team members. • Stay up to date with industry trends and emerging technologies. • Cybersecurity – Secure Coding Practices • Create secure code according to industry best practices. • Use strong encryption algorithms for data in motion and data at rest. • Manage and handle credentials and secrets in a secure, authorized manner. • Use correct error handling and logging within developed code. Required Skills: • Proficiency in programming languages such as Python, Java, and NodeJS. • Strong knowledge of front-end and back-end frameworks. • Familiarity with CI/CD pipelines and version control systems. • Knowledge of cloud platforms (e.g., AWS, Azure, Google Cloud) is a plus. • Demonstrated experience and/or familiarity with one of more of the following: SQL, Oracle, MySQL, JBDC, etc. • Demonstrated experience and/or familiarity with one of more of the following: Pytest, Jupyter, Java Spring, JUnit, Hibernate, JavaScript, ReactJs, etc. • Experience leading multiple software development teams. • Experience developing system performance, availability, scalability, manageability, and security requirements for mid- to large-scale programs. • Experience with cloud computing, multimedia storage, knowledge databases and data-mining analytics. • Agile development methodology experience required. • Experience with Linux and/or Unix. • Experience with Jenkins and/or CloudBees. Desired Skills: • Excellent problem-solving and communication skills. • Strong teamwork and collaboration abilities. • Ability to adapt to a fast-paced, evolving technology environment. • Attention to detail and commitment to delivering high-quality solutions Desired Certifications: • DoDM 8140.03 DCWF Information Systems Security Developer (631), CSSLP, CISSP • Software development methodology certification (e.g. SCRUM Master) highly desired Required Education: Bachelor’s degree in Software Engineering, Computer Science, or related discipline