Top Principal Software Engineer Jobs in Denver & Boulder, CO

The Principal Software Engineer will lead architectural direction, integrate AI capabilities, mentor engineers, and tackle complex technical challenges for scalable systems.

Lead design, development, maintenance, and testing of complex software systems for a U.S. Government customer. Provide technical expertise, resolve defects, perform requirements analysis, and guide architecture and hardware/software trade-offs.

Design and develop flight software for space systems, mentor engineers, and ensure adherence to software development principles in an Agile environment.

Lead architecture and technical direction for Ruby on Rails and React systems, design scalable APIs and front-ends, own services/databases/infrastructure (MariaDB, Redis, Elasticsearch), use Kubernetes for scaling, integrate AI-assisted development workflows, mentor engineers, and deliver secure, well-tested production releases.

The role involves leading technical initiatives in automating network engineering for Elastic's infrastructure, developing cloud network solutions, and collaborating in a team-focused environment to enhance platform reliability.

The Principal Software Engineer will lead technical and architectural efforts on government systems, mentor teams, ensure program success, and engage with stakeholders.

The Principal Software Test Engineer will lead software testing initiatives, mentor junior engineers, and oversee testing strategies while ensuring quality across complex aerospace software systems.

As a Principal Software Engineer, you will lead and develop innovative technology solutions for the banking industry, focusing on Calypso platforms, Agile methodologies, and software development best practices.

The Principal Software Engineer will lead the modernization of seller applications, set technical strategy, and mentor engineers while driving architecture and engineering practices in a cloud-native environment.

Lead the development of a robotics data platform, focusing on data enablement, API architecture, and mentoring engineers in complex system designs.

As a Principal Software Engineer, you will lead the Containers team to develop features, improve tooling, maintain quality, and mentor engineers while shaping technical direction for Chainguard Images.

The Principal Software Engineer will lead backend system design, drive AI engineering practices, and mentor team members while working in adtech infrastructure.

The role involves designing and developing secure software solutions, focusing on innovative sensor technology for Linux environments, and enhancing customer adoption through collaboration.

Design and develop scalable features for secure software. Advocate for quality standards and engage with customers. Work remotely with a focus on product improvement.

The Principal Software Engineer will build systems for safe software deployment, enhance developer frameworks, and ensure reliability in code delivery.

Design, develop, and maintain scalable software solutions. Collaborate with teams to troubleshoot issues and enhance the software delivery lifecycle. Focus on backend services, using Java and various tools for performance optimization.

As a Principal Software Engineer at Vanta, you'll lead engineering initiatives for the Governance, Risk, and Compliance product, mentor teams, and drive significant business impact through strategic technical direction and infrastructure development.

The Principal Software Engineer will lead D2C Growth initiatives at Aura, shaping customer acquisition strategies and mentoring engineering staff while designing innovative optimization and personalization platforms.

Design and develop scalable backend systems for SaaS applications, mentor engineers, and lead projects while collaborating with cross-functional teams.

The Principal Software Engineer will lead the technical vision for cloud-native applications, mentor engineers, and ensure high standards in architecture and development.

The Sr./Principal Software Engineer will design and implement core capabilities for SingleStore's cloud platform, focusing on scalability and reliability, while mentoring other engineers and collaborating with cross-functional teams.

The Principal Machine Learning Engineer will design and scale ML systems for personalization and search, mentor engineers, and lead major ML initiatives at Fetch.

As a Principal Software Engineer at Fetch, you'll design scalable systems for user engagement, drive experimentation, lead technical strategy, and mentor teams to improve engineering productivity and system reliability.

The Principal Software Engineer will lead the Databricks platform on AWS, managing administration, design, security, and user enablement while mentoring a team.

The Principal Software Engineer, Cloud will lead the Cloud Platform team to define technical strategy and architectural direction, ensuring robust cloud systems for robotics and AI applications.