Data Engineer

*BT-513 – Data Engineer * Skill Level: Senior Location: Chantilly, VA (fully on-site, no remote option available) ***Please do NOT apply if you do not have an active Poly clearance. Those without a Poly will not be considered.*** *Overview * Bespoke Technologies is seeking a highly skilled Systems Engineering with strong Data Engineering experience to design, secure, and optimize mission-critical data solutions. This role blends system engineering, secure cloud architecture, advanced analytics, ETL/AI ML data engineering, virtualization technologies, and modern development practices. The ideal candidate has experience operating in classified AWS environments, developing with Cypher/Python/Java, and working with graph technologies, while communicating complex concepts effectively to diverse stakeholders. *Key Responsibilities:* * Design, build, and optimize ETL pipelines, including data flows supporting AI/ML/LLM projects and large-scale analytics. * Clean, preprocess, analyze, and visualize medium to large datasets using modern analytic and statistical methods. * Build and optimize Neo4j graph database solutions including schema design, relationship modeling, and efficient Cypher query development. * Develop software components in Cypher, Python, Java, or JavaScript following secure development practices. * Maintain documentation for datasets, queries, security artifacts, engineering decisions, and developed software components. *Required Qualifications:* * Minimum of 5 years with BS/BA including at least 2 years of Sponsor experience * Hands-on experience with ETL pipelines, data modeling, activity modeling, and AI/ML supportive data engineering * Proficiency in at least one programming language (Cypher, Python, Java) * Experience with graphing database technologies (Neo4j and Cypher query language expertise preferred) * Demonstrated experience cleaning, modeling, and visualizing medium to large datasets * Experience developing dashboards or system visualizations * Experience operating with modern software virtualization tools like Docker, Kubernetes * Understanding of cloud infrastructure in High security environments (classified) * Ability to clearly communicate complex technical concepts to both technical and nontechnical audiences * Customer-specific experience supporting mission systems or classified programs *Desired Qualifications* * Exposure to AI/ML or LLM system engineering and data workflows * Familiarity with Agile development frameworks and cloud native design patterns * Experience visualizing data in Tableau