Expert Software Engineer

Description Markon is seeking an experienced Expert Software Developer to support a mission-critical Intelligence Community customer in Chantilly, Virginia. This position will focus on modernizing legacy applications, developing scalable full stack solutions, and leveraging Amazon Web Services (AWS) to enhance enterprise capabilities supporting critical intelligence operations. Responsibilities Design, develop, maintain, and modernize legacy software applications to improve system functionality, maintainability, and performance. Develop and maintain full stack applications using Java, Spring Boot, Angular, and TypeScript. Design, implement, and integrate RESTful APIs using Spring Boot to support enterprise applications and data exchange. Leverage Amazon Web Services (AWS) to develop, deploy, and maintain cloud-based applications and supporting infrastructure. Develop custom scripts to automate application installation, configuration, and deployment within AWS EC2 instances. Design and implement custom Extract, Transform, Load (ETL) methodologies to support data processing, transformation, and integration requirements. Integrate and utilize Elasticsearch to support application search, indexing, and data retrieval capabilities. Translate customer requirements and technical specifications into scalable, maintainable software solutions. Develop and execute unit tests to validate application functionality, reliability, and performance. Implement and maintain automated testing frameworks, including Selenium, to improve software quality and deployment readiness. Participate in peer code reviews, applying established software engineering standards and development best practices. Collaborate with internal and external engineering teams to troubleshoot complex technical challenges and deliver technically sound solutions. Support software development activities within Agile and Scrum environments, including sprint planning, development, testing, and iterative delivery. Utilize Confluence, Jira, Git, and Jenkins to support development workflows, documentation, version control, and continuous integration activities. Develop and maintain technical documentation, including application designs, implementation procedures, and system configuration information. Provide technical guidance and mentorship to junior software developers, promoting software engineering best practices and knowledge sharing. Independently evaluate technical challenges, recommend solutions, and contribute to architectural and design decisions. Communicate technical concepts, project progress, and engineering recommendations effectively to technical and nontechnical stakeholders. Qualifications Required: An active TS/SCI security clearance with Full Scope Polygraph (FSP) is required to be considered. Bachelor's degree and 11–15 years of relevant software development experience. Strong full stack development experience using Java, Spring Boot, Angular, and TypeScript, including RESTful API development. Experience developing and deploying applications within Amazon Web Services (AWS), including EC2 configuration and custom deployment scripting. Experience designing and implementing ETL processes and integrating applications with Elasticsearch. Proficiency working in Red Hat Enterprise Linux (RHEL) command-line environments. Experience with Agile/Scrum methodologies, unit testing, peer code reviews, and automated testing tools such as Selenium. Working knowledge of Confluence, Jira, Git, and Jenkins. Strong analytical, communication, and documentation skills, with the ability to translate customer requirements into effective technical solutions. Desired: Experience modernizing legacy applications and migrating capabilities to cloud environments. Experience supporting Intelligence Community or mission-critical government software development programs. Familiarity with CI/CD automation, secure software development practices, and AWS architecture. Experience mentoring junior developers and contributing to technical design and architecture decisions. Salary Range USD $140,000.00 - USD $185,000.00 /Yr.The Markon pay range for this position is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law. Overview Eager to join a team where your skills are valued, your growth is nurtured, and your impact is profound? Look no further than Markon, a premier consulting firm deeply dedicated to advancing our nation's most critical missions. At Markon, we don't just offer jobs – we offer opportunities for personal and professional transformation. Empowering our employees to lead, innovate, and excel, we foster an environment where new ideas are not just welcomed but celebrated. As a perennial Washington Post Top Workplace, we prioritize the well-being and success of our team members, ensuring they can bring their best selves to work. Headquartered in Falls Church, Virginia, Markon has garnered national recognition for our unwavering dedication to excellence in serving the intelligence community, as well as federal civilian and defense agencies. Our growing reach extends across 17 states, 116 countries, and 5 continents, where our team of dynamic professionals collaborates to deliver unparalleled program and project management services. Markon values people and the tremendous impact each individual can make – which is why we’re consistently recognized as one of the best places to work in federal government consulting. Here, you can help solve the nation’s most important challenges, surrounded by colleagues who help you grow, advance, and succeed. We are deeply dedicated to what matters – bringing out the best in each other to advance our clients’ missions.Join us and make a meaningful impact. Markon is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, pregnancy, national origin, age, protected veteran status, or disability status. This job posting will remain open until the position is filled. Benefits Offered: Medical, Dental, Vision, Life Insurance, Short-Term Disability, Long-Term Disability, 401(k) match, Flexible Spending Accounts, EAP, Training and Tuition Assistance, Paid Time Off, and Holidays