Senior Software Engineer (TS/SCI with Polygraph)

Yellow Duck Technologies is seeking a cleared Senior Software Engineer to lead the design, development, testing, and deployment of complex software systems for mission-critical operations. This position applies advanced software engineering principles and SAFe Agile methodologies to deliver scalable, secure, and high-performance applications. The Senior Engineer collaborates with cross-functional teams, mentors junior developers, and ensures software solutions meet stringent technical, functional, and security requirements., * Lead design and implementation of complex software features.

• Architect technical solutions that align with system design principles.
• Mentor and guide less experienced engineers.
• Conduct thorough code reviews ensuring quality and security standards.
• Implement and optimize DevSecOps automation.
• Design and develop scalable microservices architectures.
• Lead technical discussions and architecture decisions.
• Troubleshoot complex technical issues across the stack.
• Participate in and contribute to SAFe Program-level activities.
• Support third-party code reviews and security assessments.

• Must have an active TS/SCI clearance with polygraph.
• Bachelor’s degree in Computer Science, Engineering, or related field. An additional 4 years of experience may substitute for a Bachelor’s degree.
• 10+ years of software development experience.
• Expert-level proficiency in multiple programming languages (Python, Java, Go, etc.).
• Deep understanding of microservices, containerization, and orchestration.
• Extensive experience with DevSecOps practices and toolchains.
• Strong knowledge of software design patterns and architectural principles.
• Experience with distributed systems and message queuing (Kafka, NATS, RabbitMQ).
• Proficiency in database technologies (PostgreSQL, Redis, Elasticsearch).
• Demonstrated ability to lead technical implementations.