Top Principal Engineer Jobs in Boston, MA

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 Principal Engineer for Conversational AI will lead engineering teams, design software solutions, and ensure high-quality products in voice and chat bots, while collaborating across functions.

The Principal Engineer for Conversational AI will lead engineering teams, develop high-quality AI software solutions, and ensure operational excellence. They will oversee design and code reviews, mentor team members, and drive technical vision in cloud environments.

Lead system architecture and engineering for advanced audio products, collaborating across teams to define technical strategies and ensure successful product development.

The Integration and Test Architect will lead the design of system integration and test processes for robotic platforms, ensuring comprehensive testing and collaboration across multiple engineering disciplines to pave the way for successful product launches.

The role involves developing applications and tools for data visualization in clinical trials, managing projects, and ensuring compliance with data standards. Responsibilities include programming in R, creating dashboards, and integrating data across clinical systems.

The Principal AI Engineer will design AI-powered workflows, partner with stakeholders, and build production-level systems in a cross-functional environment.

The role involves developing advanced signal processing algorithms, leading projects, engaging with customers, and supporting business development initiatives. Requires deep technical knowledge and leadership in radar and electronic warfare solutions.

The Principal Front-Office Engineer will lead the design and implementation of AI-driven solutions in investment strategies, collaborating with analysts to enhance toolsets and reporting systems.

The Principal Front-End Engineer will enhance the Growth team's platform and infrastructure by developing tools, managing applications, and ensuring a high-quality user experience across projects.

The Principal Engineer will lead the engineering team in building systems across full stack, improving development efficiency, and expanding products in new markets.

Design, implement, and standardize robotics control solutions (PLC/HMI/SCADA/motion) for GMP manufacturing, lead FAT/SAT/commissioning, support validation and integration with IIoT/digital systems, manage vendors and projects, mentor staff, and ensure compliance with GxP/GAMP and data integrity. Travel up to 25% to support global project execution.

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.

The Principal Engineer will lead electronic systems development for atomic clocks, mentor engineers, and collaborate across teams on design execution.

Lead design and build of scalable backend systems and data platforms; own architecture and production deployments; improve reliability, performance, and observability; mentor engineers and collaborate with Product, Data Science, SRE, and Security.

Lead design, development, and deployment of production-grade AI systems (LLM apps, retrieval pipelines). Own technical direction, ensure scalability, reliability, security, and responsible AI. Drive MLOps, model evaluation, monitoring, and mentor engineers while partnering with product and business stakeholders.

The Principal Packaging Engineer will oversee lab operations, manage packaging development projects, ensure compliance with standards, and provide strategic direction to teams.

The Principal SDET will lead automation framework development, mentor teams, drive migration to modern testing solutions, and collaborate across engineering teams to enhance quality and efficiency.

The position involves reversing complex software/firmware, developing cybersecurity solutions, leading technical teams, and conducting vulnerability research, all while ensuring national security.

Design, implement, and maintain DevSecOps features for cloud-native and on-prem database platforms. Collaborate with product and cross-functional teams, follow development workflows (source control, code reviews, CI/CD), write automated tests, and support security, configuration, monitoring, licensing, and upgrades across Kubernetes and traditional deployments.

Lead frontend architecture and implementation for a high-performance SPA and Node.js BFF. Solve algorithmic, concurrency, and memory challenges, optimize performance and builds, drive observability, security, and CI/CD, mentor engineers, and collaborate with product, UX, and SRE teams to deliver resilient, distributed real-time collaborative features.

Build internal AI operations infrastructure and tools (knowledge systems, agent-builder UIs, dashboards, catalogs). Design data flows and decide centralization vs decentralization. Create discoverable, governable surfaces for teams to compose and trust agents. Run a portfolio of small internal products, prioritize requests, and ship production code while partnering with a technical infrastructure counterpart.

Lead design and build of an AWS-only AI Operations platform: hosting, IaC, registries (Accountability, Agent, Tool), identity/authorization patterns, developer DX, observability, and security hooks for agentic systems. Evangelize internally and partner on compliance and security integrations.

Lead Android migration and launch across Cash Line and Unsecured Installment products. Define mobile architecture, partner with product/design, mentor engineers, deliver high-quality native Android and React Native solutions, and continue as a mobile specialist post-launch to improve performance and scalability.

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.