This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Sr. Application Developer based in United States. This role offers the opportunity to provide senior-level application development and technical leadership supporting Federal government missions.You will work across the full software development lifecycle, from requirements analysis and system design through development, testing, deployment, and sustainment.The position combines hands-on engineering with project leadership, technical direction, and stakeholder collaboration.You will build and enhance enterprise applications supporting critical business functions such as finance, personnel, logistics, contracts, and accounting.The environment involves complex Microsoft and enterprise technologies, large-scale databases, web services, and modern development toolchains.You will also help improve application performance, reliability, maintainability, and efficiency while supporting evolving mission requirements.This is a strong opportunity for an experienced developer who enjoys solving complex technical challenges and delivering meaningful public-sector sol... Click Apply to read the full job description.