Top Principal Software Engineer Jobs in Chicago, IL

As Principal Software Engineer, you'll define and drive Airbnb's performance strategy, lead performance profiling development, mentor engineers, and connect performance outcomes to business objectives.

Lead design and development of automated benchmarking tooling and processes for Elasticsearch at cloud scale. Define methodologies, run and interpret performance tests, investigate regressions, assist capacity planning, and mentor engineers. Collaborate cross-functionally to tune distributed systems and report benchmarking results.

Lead the design and implementation of full-stack solutions while mentoring junior engineers and driving agile development practices within the organization.

Lead design and reliability of a financial data extraction platform, minimizing human validation through AI, and enhance system correctness for scale.

The Principal Software Engineer will lead technical initiatives, develop scalable solutions, mentor teams, and drive system architecture for a connected equipment platform.

Develop and maintain advanced security software solutions, architect AI-enhanced microservices, and lead project teams for threat protection at GoDaddy.

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.

The Principal Software Engineer II will lead and contribute to Elasticsearch's Storage Engine team, focusing on efficient data querying, indexing, and developing Timeseries solutions. This role requires strong technical leadership, collaboration across teams, and expertise in Java and Elasticsearch.

Design and develop web applications, mentor teammates, shape architectural decisions, write clean code, conduct testing, and troubleshoot issues.

Lead AI adoption initiatives and cultural transformation in engineering at Yahoo Mail, enhancing developer productivity through AI tools and practices.

The Principal Software Engineer will lead technical initiatives, own systems and capabilities, drive architectural improvements, provide mentorship, and ensure quality across the engineering organization while delivering complex software solutions.

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.

The Principal Software Engineer will lead development for Dataminr's Knowledge Platform, focusing on AI and data engineering to enhance knowledge graphs and alerting capabilities.

The Principal Engineer leads software system design for NPI projects, ensuring compliance, fostering innovation, and providing technical guidance while managing risks and mentoring teams.

The Principal Software Engineer will design and build scalable core technology systems for Lime's fleet and mentor a team of engineers. Responsibilities include defining technical strategy and collaborating cross-functionally to improve technology and user experiences.

The Principal Software Development Engineer role focuses on Developer Productivity & Insights, leading analytical investigations, defining metrics strategies, and partnering with teams to enhance engineering effectiveness across the organization.

Design and implement new search features and fixes in Elasticsearch, invent or implement algorithms/data structures, collaborate with a distributed team, contribute to Lucene, and build scalable search functionality for serverless platforms.

The Principal Software Engineer will lead integration domains, make architectural decisions, mentor engineers, and drive AI-driven solutions for cybersecurity tools.

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 lead software architecture, design, and development for genetic testing systems, collaborating across teams to deliver robust solutions that enhance patient care.

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.

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

The Principal Data/Software Engineer designs and implements data pipelines, develops software solutions, optimizes performance, ensures data quality, and collaborates within Agile teams while providing technical leadership and support.

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 the development of analytics capabilities in Elasticsearch, defining technical vision, mentoring engineers, and collaborating with partners to enhance query features and infrastructure.