Top Principal Software Engineer Jobs in Chicago, IL

Lead architecture and technical strategy for enterprise-scale AI and data platform initiatives. Design scalable, resilient real-time decisioning and inference systems, partner with product and business leaders, mentor engineers, and drive engineering best practices across the organization.

As a Principal Software Engineer, you will design, develop, and implement complex software solutions, lead projects, and ensure compliance with standards in a cloud-first environment.

Design, develop, and optimize high-performance trading systems; mentor junior engineers and enhance system monitoring for secure trade execution.

The Principal Software Engineer will define, architect, and develop gameplay features in Unity and C#. The role involves optimizing performance, collaborating with other engineers, and mentoring team members.

Lead technical vision and execution for enterprise-scale AI, automation, and data initiatives. Architect scalable, secure AI systems and data pipelines, mentor engineers, drive cross-functional alignment, and deliver high-impact production solutions that improve productivity and business outcomes.

The Principal Software Engineer will lead teams in developing full-stack applications, enhance services, drive architectural discussions, and mentor other engineers.

The Principal Software Engineer will architect and lead the development of scalable systems, drive technical excellence, mentor teams, and promote best practices at a fintech company.

The role involves designing and implementing software architecture, collaborating with engineering teams, and ensuring high productivity and quality in software development.

The Principal Software Engineer at FreeWheel leads the design and architecture of scalable software systems, mentors engineers, and collaborates on product requirements while ensuring timely delivery and technical excellence.

As a Principal Software Engineer on the SRE team, lead best practices adoption, mentor engineers, and improve system reliability and user experience through automation and collaboration.

As a Principal Software Engineer, you'll architect and code backend services and ML models, integrate them with Salesforce, and mentor junior engineers.

As a Principal Software Engineer, you will lead the development and architecture of Upstart's Core GenAI Platform, ensuring technical excellence and cross-team collaboration while mentoring junior engineers and influencing business strategy.

The Principal Software Engineer leads technical vision and architecture, collaborates with stakeholders, mentors engineers, and ensures timely delivery of scalable software solutions.

This role involves designing and developing core modules for an enterprise-level clinical data platform, ensuring compliance with quality standards, and collaborating with teams for software development and testing.

The role involves building and optimizing a machine learning and simulation platform, supporting MLOps, model deployment, and infrastructure modernization, while mentoring engineers.

Lead the architectural design and development of a new consumer credit product, focusing on backend systems, distributed services, and integrating AI tools. Mentor team members and influence product direction through engineering insights.

Lead technical strategy for Dropbox's core systems and AI integration, drive technical outcomes, and influence multiple teams. Involve hands-on software development and architecture for scalable products.

The Principal Software Engineer will define technical roadmaps, guide system architecture, mentor leaders, and drive product direction in Capital Supply operations.

The Principal Software Engineer at Avant will architect and develop scalable solutions for credit card and loan servicing products, collaborating with various teams to enhance performance and customer experience while driving innovation in digital banking.

The Principal Software Engineer will tackle platform-level challenges, assist team members, write secure and scalable code, and develop features for cloud storage solutions.

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.

Design, develop, and maintain high-performance authorization solutions for a SaaS platform, focusing on performance optimization and scalable architecture. Mentor junior engineers and participate in on-call rotations.

The Principal Software Engineer will design, develop, and implement complex solutions for the FedNow service, providing technical leadership and ensuring high-quality software across various technologies.

The Principal Software Engineer will lead design and development of software solutions, mentor teams, and ensure alignment with company's tech strategy while driving innovation in FinTech and cloud services.

Lead design, architecture, and hands-on implementation of scalable healthcare SaaS systems. Drive interoperability (HL7, FHIR, EDI), mentor engineers, liaise with stakeholders, manage technical risk, and ensure quality, performance, security, and innovation.