Top Principal Engineer Jobs in Boston, MA

The Principal Engineer will take ownership of production-grade systems, improve customer outcomes with high-leverage features, and ensure technical quality across the stack, utilizing deep expertise in backend and AI systems.

Design, implement, and maintain C++ tracking and estimation software for ISR and sensor systems. Lead small multidisciplinary teams, manage codebase from requirements through testing, support demonstrations and customer interactions, and work within Agile/DevSecOps environments on Windows and Linux.

The Principal Software Engineer at Snyk will lead technical initiatives, mentor engineers, engage with stakeholders, and influence product strategy, focusing on software security and scalability.

The Principal Electrical Systems Engineer will focus on system architecture, design, and prototyping across electrical and embedded domains, collaborating with cross-functional teams to evaluate emerging technologies and inform product direction.

Seeking a Principal Engineer to define and govern architecture for the Developer Platform while ensuring technical excellence in build systems and CI/CD practices.

Lead the development of perception capabilities for self-driving vehicles, focusing on computer vision and deep learning to enhance product impact and safety evaluation.

Lead architectural vision and technical design for D2C platforms, focusing on AI integration, performance, and scalability while mentoring teams and promoting innovation.

Lead engineering strategy and implementation for cGMP bioprocess and bioconjugation manufacturing. Design, optimize, and scale processes and equipment, develop PAT and automation control strategies, oversee CDMO activities, ensure regulatory compliance, and drive continuous improvement across cross-functional teams.

The Principal AI Engineer will lead the design and implementation of scalable AI systems in mental healthcare, ensuring safety and reliability while making AI useful in clinical contexts.

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

Lead R&D of motion planning, trajectory generation, and control algorithms and ML models for autonomous vehicles. Architect systems with cross-functional teams, design simulation and validation for edge cases, document findings for safety traceability, and mentor junior engineers.

The Principal Engineer will lead technical strategy for ad products, mentor teams, oversee significant engineering projects, and drive innovation in machine learning and advertising technology.

Lead the design of Xsolla's identity platform, develop Golang microservices for user management, and implement security protocols for compliance.

The Sr Principal Engineer guides software design and development for medical devices, resolving complex problems and mentoring junior engineers while adhering to medical regulations.

Lead design and development of high-performance Java-based solutions, architect enterprise integrations, drive performance engineering, mentor developers, own CI/CD and containerization efforts, and represent domain direction externally.

The Principal AI/ML Engineer will develop machine learning models for campaign optimization in AdTech, collaborating across engineering and product teams to enhance advertising capabilities.

The Principal Engineer will lead enterprise scalability efforts, driving architectural changes, optimizing systems, and integrating AI for improved operational performance across multi-tenant SaaS platforms.

The Principal Engineer - Process will support manufacturing and development of the Chip Scale Atomic Clock, focusing on process optimization, materials analysis, and lean manufacturing methodologies.

Design and build scalable backend platforms for regulated scientific workflows, ensuring compliance and reproducibility while enhancing performance and usability across cloud environments.

The Principal Engineer will design, implement, and deploy tools and workflows to enhance engineering productivity, working closely with teams to improve software delivery.

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.

Lead systems engineering for infusion medical devices: develop and manage system/subsystem requirements, ensure regulatory compliance (DHF, ISO, IEC, FDA), support risk management, V&V, and cross-functional design activities, investigate root causes, and document system assessments throughout the product lifecycle.

Lead the technical direction of PaaS at DigitalOcean by architecting and implementing robust cloud-native services while mentoring engineers and ensuring system reliability.

As a Principal Engineer on the Behaviors team, you will guide the technology direction, lead complex initiatives, and mentor engineers to enhance autonomous vehicle capabilities through ML solutions.

The Principal State Estimation Engineer will develop advanced sensor fusion algorithms for UAV navigation, integrating multiple sensor data and ensuring robust performance in contested environments.