• Own quality for a realistic Search Atlas slice consisting of 6 Express microservices and a Next.js frontend • Evaluate and refine our QABot AI test automation package, identifying and fixing deliberate architectural flaws • Drive the adoption and fluency of Stagehand and Playwright across the engineering organization • Identify and resolve complex bugs across three difficulty tiers (Easy, Medium, and Hard) using distributed traces and CI reports • Translate technical diagnostic findings and architectural judgments into Executive Briefings and Agent Evaluation reports • Analyze pre-generated ops artifacts, including trend analysis and distributed telemetry, to maintain high system reliability

About the Team: The Real-time Architectures, Integration, and Demonstration (RAID) Group focuses on transition of algorithms from concept to real-time software, providing open architecture expertise, and facilitating integration of capabilities for experimentation, test, and deployment. The Role: As a Principal Software Engineer, you will lead technical teams developing real-time software for advanced RF sensor systems. You will architect software solutions compliant with open architecture standards, lead the transition of algorithms from concept to real-time implementation, and mentor junior engineers. What you will do: - Lead technical teams in architecting, developing, and deploying real-time RF sensor software derived from diverse sources - Transition advanced algorithms from MATLAB/Python prototypes to optimized production C/C++ implementations within open architecture frameworks - Optimize software performance for real-time, resource-constrained systems with strict latency requirements - Architect communication infrastructure and data flows for distributed processing systems - Lead end-to-end open system integration efforts including hardware-in-the-loop testing, ensuring seamless integration across distributed architectures, external systems, and hardware platforms - Conduct design reviews, code reviews, and technical risk assessments and ensure software compliance with open architecture standards and frameworks - Mentor and provide technical guidance to junior and mid-level engineers - Write technical reports, create briefings, and present results to sponsors and senior management - Interface with customers, program managers, and stakeholders to define technical requirements - Lead proposal development efforts including technical approach definition, cost estimation, and white paper development - Collaborate with algorithm developers, systems engineers, RF hardware engineers, and integration teams across programs - Stay current with emerging technologies and best practices in real-time software development - Support approximately 20% travel for customer meetings, integration events, and field demonstrations Who you are: - Active clearance at the Secret level with ability to obtain and maintain a Top Secret security clearance, for which U.S. citizenship is needed by the US government - BS, MS, or PhD in Computer Science, Computer Engineering, Electrical Engineering or a related field with a minimum of 5-10+ years of relevant work experience depending on degree (BS +10 years, MS +8 years, PhD +5 years) - Experience in two or more of the following areas: - Professional software development, C++ for high-performance real-time applications, real-time software for signal processing or sensing applications, Architecture development, leading complex software development efforts, open systems architecture integration, hardware / software integration, proposal leadership Even Better: - Active Top Secret Security Clearance (TS/SCI preferred) - Strong testing mindset with experience in unit testing, integration testing, and continuous testing frameworks - Experience with: - Multithreaded programming, distributed systems, performance optimization - Real-time constraints, latency budgets, and deterministic behavior - RF signal processing concepts - GPU programming and optimization (CUDA, OpenCL) - Containerization, CI/CD pipelines, and DevOps practices - Linux and embedded systems development - MATLAB and/or Python for algorithm prototyping Join us and be part of a team that's making an impact at the forefront of technology and innovation. Come be part of our mission to drive innovation and make a difference in the world. Pay Information Full-Time Salary Range: $206,000 - $284,000 The salary range listed is based on external market data. Offers are based on factors, such as but not limited to, the candidate’s experience, education, training, key skills/critical skills, security clearances, and prevailing market and business conditions. STR is a growing technology company with locations near Boston, MA, Arlington, VA, near Dayton, OH, Melbourne, FL, and Carlsbad, CA. We specialize in advanced research and development for defense, intelligence, and national security in: cyber; next generation sensors, radar, sonar, communications, and electronic warfare; and artificial intelligence algorithms and analytics to make sense of the complexity that is exploding around us. STR is committed to creating a collaborative learning environment that supports deep technical understanding and recognizes the contributions and achievements of all team members. Our work is challenging, and we go home at night knowing that we pushed the envelope of technology and made the world safer. STR is not just any company. Our people, culture, and attitude along with their unique set of skills, experiences, and perspectives put us on a trajectory to change the world. We can't do it alone, though - we need fellow trailblazers. If you are one, join our team and help to keep our society safe! Visit us at www.str.us for more info. STR is an equal opportunity employer. We are fully dedicated to hiring the most qualified candidate regardless of race, color, religion, sex (including gender identity, sexual orientation and pregnancy), marital status, national origin, age, veteran status, disability, genetic information or any other characteristic protected by federal, state or local laws. If you need a reasonable accommodation for any portion of the employment process, email us at appassist@str.us and provide your contact info. Pursuant to applicable federal law and regulations, positions at STR require employees to obtain national security clearances and satisfy the requirements for compliance with export control and other applicable laws.

Role Description The S-76 Pilot in Command (PIC) reports to the Chief Pilot and is responsible for the safe, efficient, and professional execution of all assigned flight operations. This role requires a strong working knowledge of applicable FAA regulations (Parts 91 and 135), company procedures, and operational best practices. - Aerial firefighting (day and night operations) - Ferry and repositioning flights - Reconnaissance (day and night operations) - Emergency response and disaster mitigation Pilots are expected to manage daily operational requirements, support contract execution, and represent Coulson Aviation with professionalism in all interactions. Key Responsibilities - Exercise final authority for the safe operation of the aircraft in accordance with 14 CFR 91.3. - Review flight assignments, weather, NOTAMs, and mission-specific requirements. - Ensure proper preflight planning, including weight & balance, fuel, routing, and performance. - Conduct thorough aircraft inspections and ensure readiness for flight. - Verify all maintenance discrepancies have been procedurally complied with, deferred, or corrected by maintenance personnel in accordance with the approved Minimum Equipment List for the aircraft, prior to flight. - Ensure all required documents, equipment, and materials are onboard. - Maintain accurate flight logs and operational records. - Conduct passenger and crew briefings, when applicable. - Coordinate effectively during pilot shift changes. - Ensure compliance with duty and flight time limitations. - Assist with aircraft cleanliness and basic support to maintenance as needed. - Maintain a high standard of professionalism with clients and stakeholders. Qualifications - FAA Commercial Rotorcraft License - Instrument Rating (Helicopter) - Qualified to act as PIC in S-76 - Minimum 2,500 hours PIC (helicopter) preferred - Must meet or exceed USFS PIC qualification requirements - No FAA violations or enforcement actions within the past 5 years - Strong knowledge of FAA regulations and operational standards - Excellent communication and interpersonal skills - Ability to manage multiple priorities in a dynamic environment - Team-oriented with strong decision-making skills - High school diploma or equivalent Preferred Qualifications - Night Vision Goggle (NVG) experience - Previous firefighting or utility helicopter experience - Experience supervising crews Work Environment - Field-based operations in dynamic and remote environments - Exposure to noise, dust, fumes, and varying weather conditions - Occasional lifting up to 50 lbs Compensation & Benefits - Competitive compensation based on experience and qualifications - Company-paid medical, dental, and vision insurance - 401(k) with company match - Flexible work schedule supporting work-life balance - Travel provided to and from assignments Equal Opportunity Employer Coulson Aviation is committed to fostering a diverse, inclusive, and respectful workplace. We provide equal employment opportunities and reasonable accommodation for applicants with disabilities throughout the hiring process.

• Develop Test Plans and Strategies: With the goal of minimizing production defects, assist in the creation and execution of basic test plans and strategies. • Follow existing guidelines to document test scope, approach as well as estimation of time and resources for testing activities, under the guidance of more experienced engineers for small features within one functional area. • Design and Execute Test Cases: Develop reproducible test cases and execute them based on simple software requirements. • Perform functional, smoke, and basic regression tests, ensuring basic test coverage to reduce production defects. • Perform Manual and Automated Testing: With the goal of minimizing production defects, conduct manual testing for exploratory and usability purposes. • Execute and implement simple automated testing tasks under the guidance of senior engineers to develop automation skills. • Documentations for Process and Bug Report: Create basic test cases, test results, and bug reports. • Provide easy-to-follow test cases, concise reproducible steps in bug report and keep all reports and other documentation up to date for small sized features to ensure overall quality. • Utilize the best practice to ensure overall quality. • Cross-Functional Collaboration and Communication- Work with TPM/Engineers to ensure the clarity of simple product requirements and help ensure that defects are addressed so that the software meets basic functional and business needs for simple features in their team. • Support and guide business stakeholders in User Acceptance Testing (UAT) activities. • Identify obstacles to the progress of testing tasks and work with senior test engineers to resolve them within the testing team. • Raise concerns and blockages to team leads and actively follow up on resolution. • Begin to learn basic automation principles and assist with automated tests.