Top Principal Software Engineer Jobs in Chicago, IL

Lead the architecture of Commerce Hub by defining core domain models, building intricate systems, and mentoring engineers while influencing product strategy.

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

The Principal Software Engineer will architect and oversee the development of distributed systems, mentor engineers, and drive architectural initiatives for large platforms.

The Principal Software Engineer will architect real-time conversation systems, deliver production code, and integrate generative AI into workflows for live customer interactions.

The Principal Software Engineer - Web is responsible for designing and developing new features for Yahoo Mail, mentoring peers, and enhancing user experience. This role requires strong knowledge of web technologies and collaboration with cross-functional teams to deliver high-quality updates and improvements.

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.

Lead engineering initiatives for automating network solutions, improve global infrastructure, ensure reliability, and manage operational problems with a focus on customer satisfaction.

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 Staff/Principal Software Engineer will work in a remote global team, addressing software engineering challenges while fostering collaboration and clear communication.

The Principal Software Engineer will lead technical initiatives, align cross-functional teams, establish standards, and guide multiple engineering teams towards strategic objectives, driving large-scale improvements in business outcomes.

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

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.

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

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.

The Principal Desktop UI Software Engineer will design and develop user-friendly interfaces for medical devices, collaborating with cross-functional teams and mentoring junior members.

Design, develop, and deploy secure, scalable software solutions; implement and automate CI/CD pipelines and testing; manage cloud infrastructure (AWS/Azure) and infrastructure automation; provide Tier III support, monitor performance and SLAs, and train teams on automation best practices.

Lead design and implementation of advanced systems features for Postgres, focusing on performance optimization and scalability. Mentor engineers and drive architectural direction for large-scale database systems.

Lead the development and implementation of predictive optimization models for renewable energy projects, focusing on energy storage and trading strategies using machine learning techniques.

As a Principal Software Dev Engineer, lead full-stack engineering, oversee complex initiatives, mentor engineers, and align technical strategies with business goals to enhance content management systems.