Graph Database Engineer (2026-0080) with Security Clearance

Acclaim Technical Services, founded in 2000, is a leading cyber operations, intelligence solutions and operations, network infrastructure, engineering and business enablement and enterprise operations company supporting a wide range of U.S. Federal agencies. We are an Employee Stock Ownership Plan (ESOP) company, which is uncommon within our business sector. We see this as a significant strength, and it shows: ATS is consistently ranked as a top workplace among DC area firms and continues to grow. JOB DESCRIPTION We are looking for an experienced Systems Software Engineer to join our team, interested in designing, developing and maintaining essential software systems. The optimal candidate will have demonstrated experience integrating solutions with graph databases, such as JanusGraph. They will also have a strong background in systems software development, experience with 3rd party system integration, expertise in ElasticSearch, and a solid understanding of data modeling concepts. This is a fantastic opportunity to work on a challenging project that requires innovative solutions and collaborative problem-solving. KEY RESPONSIBILITIES * Design, develop, test, and deploy scalable and efficient software solutions * Collaborate with cross-functional teams to identify and prioritize project requirements * Participate with code reviews and ensure high-quality, modular, and reusable code * Troubleshoot and debug issues in the application, including performance optimization and error handling * Stay up-to-date with industry trends and emerging technologies, applying this knowledge to improve our application * Design and implement data models that meet the needs of the application, ensuring data consistency and integrity EDUCATION AND EXPERIENCE * Bachelor's Degree in Computer Science, Electrical or Computer Engineering or a related technical discipline, or the equivalent combination of education, technical training, or work/military experience. * 5+ years of related software development experience. REQUIRED QUALIFICATIONS * 5+ years of experience in systems software development in NodeJS * Strong proficiency working with graph databases (for example JanusGraph) and graph query languages * Strong understanding of software design patterns, principles and best practices * Excellent problem-solving skills, with the ability to work effectively in a team environment * Basic understanding of data modeling concepts, including entity-relationship, data normalization, and denormalization * Experience with Git workflows, including feature branching, pull requests and code reviews * Ability to work effectively in a Linux-based development environment * TS/SCI with Polygraph DESIRED QUALIFICATIONS * Experience with Node.js, Express, MongoDB and Cassandra * In-depth knowledge of ElasticSearch, including indexing, querying and aggregation * Knowledge of containerization leveraging Kubernetes * Familiarity with CI/CD pipelines and automation tools such as Jenkins or Argo CD * Hands-on experience working with message brokers such as RabbitMQ or AWS SQS