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## Job details - Location: Richardson, Dallas - Work mode: Onsite - Employment type: Full-time (Not an internship) - Salary: USD 0 - 251,600 per year ## Role overview RTX is hiring a Modeling and Simulation Senior Principal Engineer for an onsite position in Richardson, Dallas. This principal-level role requires an active TS/SCI security clearance with Polygraph and focuses on advanced modeling, simulation, and systems engineering for defense and aerospace applications. The position offers a competitive salary up to $251,600 USD and requires U.S. citizenship. ## Job details This is a full-time, onsite position located in Richardson, Dallas, Texas. The role is based at RTX's Cityline facility and requires daily presence due to the classified nature of the work. Candidates must hold or be able to obtain a Top Secret/SCI security clearance with Polygraph. Salary range is competitive, with a maximum of $251,600 USD depending on experience and qualifications. Only U.S. citizens are eligible due to security clearance requirements.

## Role overview Lead the development of advanced training systems for the British Army, working within a hybrid environment to deliver cutting-edge software solutions. This role involves shaping technical strategy, mentoring teams, and ensuring the delivery of mission-critical applications that redefine military training standards. ## Responsibilities - Architect and implement complex software systems for defense training platforms - Collaborate with cross-functional teams to align technical solutions with strategic goals - Mentor senior engineers and drive innovation in software development practices - Ensure system reliability, scalability, and security for high-stakes military applications - Represent technical leadership in key stakeholder meetings and project planning ## Requirements - 10+ years of software development experience in enterprise or defense sectors - Proven leadership in large-scale system design and architecture - Expertise in multiple programming languages and modern development methodologies - Strong understanding of cybersecurity principles for mission-critical systems - Demonstrated ability to translate business needs into technical solutions ## Benefits - Hybrid working model with modern office facilities - Opportunities for professional development and leadership growth - Competitive compensation package - Contributing to national defense through innovative technology - Collaborative environment with industry-leading experts

## Role overview RTX seeks a Principal Windows System Administrator to manage critical infrastructure systems. The role requires maintaining secure, scalable Windows environments while adhering to stringent security protocols. Candidates must obtain/maintain a DoD Secret clearance. This onsite position in Woburn, MA demands expertise in enterprise system administration, security compliance, and cross-functional collaboration to support mission-critical operations.

## Role overview RTX seeks a Principal Systems Engineer to lead complex technical initiatives. This role requires active U.S. security clearance and collaboration with cross-functional teams to design, implement, and optimize mission-critical systems. The position is based in Davis, Yolo County, and requires U.S. citizenship. Candidates must maintain an active DoD Secret clearance and demonstrate expertise in systems architecture and security protocols.