Senior Full Stack Software Developer/Engineer w/Poly

**What Impact You'll Have** As a Senior Full Stack Soft w are Developer/Enginee r, you will perform as an individual contributor and team member focused on developing and refining a command\-and\-control platform used by a wide variety of stakeholders. Soliciting and incorporating user feedback is paramount in developing a superior product. Ideal candidates will have full stack development experience, with demonstrated skills developing front\-end applications and user interfaces, as well as employing back\-end technologies and programming languages. **What You'll be Owning** * Lead design and development of applications, tools, and user interfaces supporting advanced data processing and command\-and\-control workflows * Engage proactively with mission partners to understand operational use cases and convert high\-level requirements into actionable features, work products, and technical specifications * Collaborate with internal and external engineering teams to define interface control documents (ICDs), subsystem behaviors, and integration patterns * Develop CONOPs, user guides, release notes, and technical artifacts supporting software delivery and stakeholder adoption * Architect and optimize large scale data analysis pipelines using Spark, OpenSearch/Elasticsearch, and distributed data technologies * Lead merge reviews, enforce coding standards, and guide peers in performance optimization and maintainability improvements * Build and refine back end services and APIs that support high\-performance data workflows * Oversee testing strategies, diagnose complex issues, and ensure delivery of stable, high\-reliability software * Mentor junior developers, foster a high performing engineering culture, and support professional growth across the team * Influence long\-term technical direction, evaluate emerging technologies, and guide architectural decisions **What You Must Have** * Active TS/SCI with polygraph * 10\+ years of software engineering experience in fast\-paced, collaborative environments * Strong proficiency in Python and Java * Experience building React front end applications and Django back end services * Experience with DevOps workflows, CI/CD pipelines, and automated deployment * Full stack development experience across front end and back end systems * Recent experience building applications, analysis tools, or mission\-focused software * Bachelor’s degree in Computer Science or related field **What Would be Nice to Have** * Knowledge of OpenSearch/Elasticsearch indexing, search, and analytics * Demonstrated ability to reverse engineer applications and understand legacy systems * Experience with messaging/task queues (Kafka, gRPC, Celery) * Proficiency with containerization (Docker, Kubernetes) * Experience with databases or data stores (MariaDB, MySQL, ValKey, PostgreSQL, Elasticsearch, InfluxDB, MongoDB) * Experience with Open Telemetry (OTel) or similar observability framework * Familiarity with collaboration and issue tracking tools such as GitLab, Jira, and Confluence \#LI\-PS1