Senior Software Engineer

SSI is seeking a Senior Software Engineer for a role in El Segundo, CA. In this role, you will serve as a subject matter expert (SME) in developing, deploying, and sustaining National Security Space systems. In this critical role, you will work directly with government, technical, and industry stakeholders to design, integrate, configure, and optimize data-driven software solutions that enable mission execution across complex operational environments. 

 

• Serve as the Software Development & Palantir Foundry Expert: Develop and maintain mission-focused software solutions by leveraging expertise in messaging technologies (e.g., Kafka, AMQP), patterns, protocols, data structures, and data engineering. Utilize the Palantir Foundry technology stack, including Ontology SDK, Foundry Transforms, Code Workbooks, Pipeline Builder, and AI/ML integrations, to design effective solutions.
• Support Architectural Design: Develop and implement MOSA-compliant architectures to deliver modular, scalable, and interoperable software solutions enabling joint domain integration across space, air, ground, cyber, and terrestrial domains. 
• Lead Agile & DevSecOps Practices: Utilize Agile methodologies and technologies (e.g., ArgoCD) to lead development efforts. Incorporate DevSecOps principles to ensure iterative, secure, and reliable delivery of mission-critical capabilities.
• Lead Integration Solution decision making: Architect and develop multi-domain data integration pipelines, leveraging Palantir Foundry tools to aggregate, normalize, and enable seamless integration of sensor, intelligence, and C2 data across domains.
• Support System Engineering & Program Strategy: Contribute to the development of system engineering documentation, including CONOPs, requirements definitions, and integration blueprints. Support the refinement of program acquisition strategies while providing guidance to address technical challenges and identify solutions.
• Support Joint Domain Data Fusion: Leverage Palantir Foundry’s capabilities for multi-domain data fusion, enabling operational insights and decision-making for joint domain integration aligned with DoD joint warfighting frameworks like CJADC2.
• Collaboration & Stakeholder Engagement: Interface with combatant commands (CCMDs), service components, and Intelligence Community (IC) agencies, providing trusted technical advice and ensuring alignment with DoD joint domain strategy and standards.
• Support software sustainment, enhancement, and modernization efforts for mission-critical capabilities operating across secure and complex DoD environments and varying classification levels.
• Document technical solutions, interfaces, workflows, and engineering decisions to support maintainability, knowledge transfer, and Government oversight.

• Experience implementing or supporting Palantir Foundry and/or Gotham in operational, defense, intelligence, or mission command environments.
• Experience supporting Operationally Accepted software applications, data environments, or mission applications within SSC, Space Force, or broader DoD mission systems.
• Strong understanding of data ontology, data modeling, object relationships, workflow automation, and operational application configuration in Palantir environments.
• Experience integrating disparate mission systems, intelligence data, C2 systems, readiness data, or space domain awareness data into a unified operational environment.
• Experience developing dashboards, mission applications, or user workflows that enable commanders, operators, analysts, or mission planners to make faster and better-informed decisions.
• Familiarity with software solutions supporting space operations, integrated fires, command and control, or joint/combined operational mission threads.
• Experience operating in DevSecOps, platform engineering, or hybrid cloud environments supporting software delivery in secure programs.
• Strong systems engineering mindset with the ability to connect technical implementation details to operational mission outcomes.
• Ability to communicate effectively with engineers, architects, operators, and senior Government leadership while translating technical concepts into mission-relevant value.
• Proven ability to work in highly regulated, fast-moving environments where technical excellence, mission responsiveness, and stakeholder coordination are all critical to success.