> Markdown version of [/jobs/ext/4031988-mid-level-data-engineer-305k-yr-ts-sci-fs-poly](https://www.wearedevelopers.com/jobs/ext/4031988-mid-level-data-engineer-305k-yr-ts-sci-fs-poly). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Mid-Level Data Engineer [$305k/yr+] TS/SCI-FS Poly - **Company:** SYSTOLIC, INC. - **Location:** Herndon, VA, United States - **Experience:** Experienced - **Salary:** $305,000.0 - **Contract:** Permanent contract - **Skills:** Java (Programming Language), Amazon Web Services, Databases, Data Architecture, Data Infrastructure, Extract Transform Load (ETL), Relational Databases, Data Flow Control, Python (Programming Language), PostgreSQL, MongoDB, Neo4j, NoSQL, Oracle (Applications), Redis, Freeform SQL, Apache Nifi, Data Pipelines - **Published:** October 30, 2026 - **Apply:** https://www.clearancejobs.com/jobs/9277184/mid-level-data-engineer-305kyr-tssci-fs-poly ## About the Role * Degree: Technical bachelor's degree or equivalent experience * Years of experience: 8+ years * Total Compensation: $305k+ yearly (tentative) ## Description * Lead data architecture, modeling, and design across complex data environments. * Build and optimize robust ETL and ELT data pipelines using Python, Java, and Apache NiFi. * Manage and maintain multi-model database systems spanning relational, document, graph, and in-memory technologies., * Architect, construct, and support high-throughput dataflow pipelines using Apache NiFi, Python, and Java. * Execute comprehensive data modeling and design to support enterprise database engineering initiatives. * Develop complex SQL queries and manage relational database systems including Oracle and PostgreSQL. * Administer and integrate NoSQL, graph, and caching datastores including MongoDB, Neo4J, and Redis. * Deploy, monitor, and optimize database solutions within AWS cloud environments.