Top Principal Engineer Jobs in Boston, MA

Lead design and delivery of flight-critical power electronics for the X-BAT aircraft, including inverters, DC-DC converters, and battery management. Own full hardware development cycle, drive PCB layout, harden designs for harsh environments, mentor engineers, lead reviews, and manage program timelines through production.

Lead architecture, development, and validation of end-to-end aircraft fuel systems. Drive cross-functional integration, system-level modeling (CFD), verification, supplier qualification, ground and flight test support, anomaly root-cause analysis, and mentor engineering teams while contributing to long-term fuel-system technology roadmaps.

The Senior Kubernetes Engineer will manage and enhance Kubernetes clusters, automate deployments, ensure security, and collaborate with teams to deliver reliable containerized applications.

Lead architecture and evolution of an enterprise Kubernetes platform across cloud and on-premises. Define platform roadmap, standards, and automation; design multi-cluster/multi-region solutions; implement GitOps, IaC, observability, security, and resiliency practices; mentor engineers and drive cross-functional platform initiatives for reliability, scalability, and developer experience.

Owns and evolves the enterprise Major Incident Response, Post-Incident Review, and Problem Management programs. The role engineers ServiceNow ITSM workflows, automations, integrations, dashboards, SLA/SLO tracking, and incident escalation processes. It serves as Incident Commander for high-severity events, leads RCA and continuous improvement, manages an offshore operations team, and communicates program health to executive stakeholders. The position requires participation in on-call rotations and hybrid work onsite in Marlborough, Massachusetts.

Lead development and application of advanced signal processing, detection, classification, and machine learning algorithms for radar and RF sensing/electronic warfare. Engage customers, lead multidisciplinary teams, translate capabilities into requirements, develop prototypes and demonstrations, and support business development and proposals.

Lead design and implementation of scalable, secure full-stack web applications and core platform modules. Influence architecture, deliver clean well-tested code, mentor engineers, integrate LLM/AI services responsibly, diagnose production issues, and collaborate across product, QA, and platform teams to meet regulatory and quality standards.

Lead commissioning and production readiness for high-volume advanced-materials manufacturing lines. Design and optimize workflows, implement MES and process-monitoring systems, establish qualification protocols, define process controls, and build quality-management infrastructure. Translate developmental materials processes into repeatable, scalable manufacturing while driving root-cause analysis, corrective action, safety, and continuous improvement. Collaborate cross-functionally with equipment and process engineering teams in a resource-constrained startup environment.

The Security Engineering Manager oversees IT security policies, manages incident response, tracks threats, engages with IT teams, and provides regular incident reporting.

Develop and implement AI validation methodologies, enhance application performance, collaborate with Agile teams, and lead AI testing efforts for healthcare products.

Lead architecture and technical execution for Toast’s Payroll and Team Management products. Own authentication, authorization, and organizational hierarchy across a multi-tenant SaaS platform. Drive high-scale, full-stack initiatives, modern agentic development practices, integrations, technical strategy, quality standards, deployment practices, and cross-functional collaboration. Mentor engineers across teams and leverage AI tools and LLM integration to improve software development velocity and quality.

The Principal Model-Based Systems Engineer will lead development programs using MBSE approaches, mentor teams, and implement digital engineering goals, focusing on DoD systems.

Lead multidisciplinary teams to design, develop, and transition advanced RF sensing and electronic warfare algorithms from concept to prototype. Architect signal processing, detection/classification, waveform and adaptive processing solutions, engage customers, mentor researchers, support proposals and business development, and verify system performance through modeling, simulation, and testing.

The role involves designing and enhancing database engine components, optimizing algorithms, and maintaining programming language support, requiring extensive experience in low-level system code development.

Lead development, integration, and qualification of semiconductor processes; drive yield, defect reduction, and cost optimization using DOE/SPC and data analytics; enable NPI transition to high-volume manufacturing; lead failure analysis and reliability efforts; collaborate with design, manufacturing, and foundry partners and mentor engineering staff.

Lead design and build of production-ready cloud and AI systems, prioritize security and reliability, ship solutions quickly using modern engineering practices, collaborate with cross-functional teams, mentor engineers, drive customer adoption, and deliver reusable assets and end-to-end complex deliveries.

Lead aerodynamic and aeroacoustic analysis, optimization, modeling, and testing for rim-driven electric and hybrid ducted fan propulsion systems. Develop CFD, computational aeroacoustic, physics-based, data-driven, and AI-enabled models; correlate simulations with experimental data; define validation tests; and optimize thrust, efficiency, noise, weight, and system performance. Collaborate across propulsion, electrical, mechanical, controls, thermal, motor, and systems engineering while serving as a technical authority.

Leads the design, development, optimization, characterization, and scale-up of advanced immersion-cast membranes for semiconductor filtration. Develops membrane materials and NIPS processes, conducts laboratory, pilot, and manufacturing trials, troubleshoots process and equipment issues, documents technical findings, and drives intellectual property generation. The role collaborates with R&D, manufacturing, operations, procurement, marketing, quality, and product management to support commercialization, product launches, customer discussions, and safe laboratory operations.

Technical lead embedded with investment teams to design, prototype, and productionize AI-enabled full‑stack applications for fixed income and investment analytics. Build scalable systems, partner with analysts, write robust Python code, develop front-end visualizations, and integrate Bloomberg/financial data into production workflows.

Develop C++ software and advanced algorithms for detection, tracking, sensor measurement processing, and 3D surface reconstruction in electrophysiology medical-device applications. Collaborate with advanced concept development teams and clinical end users to create commercially applicable features. Present technical approaches, debug complex applications, and apply computational geometry, optimization, numerical analysis, probability, and statistics in an Agile research and development environment.

Leads mechanical design and development of complex electromechanical medical diagnostic and IVD systems from concept through verification, validation, and design transfer. Develops manufacturable solutions involving motion systems, precision fluidics, thermal management, CAD modeling, simulation, GD&T, and tolerance analysis. Provides technical leadership, design-control documentation, defect and root-cause analysis, CAPA support, cross-functional collaboration, mentoring, and guidance on product architecture and engineering trade-offs.

Leads FPGA architecture, HDL development, verification, integration, and release activities for medical diagnostic products. Collaborates with hardware and software engineering teams on interfaces, system-level debugging, design quality, and product releases. Performs complex design trade-off analysis, defect investigation, documentation, and technical mentoring. Supports schedules, CAPA or complaint investigations, and cross-functional technical communication.

Lead architecture, design, and delivery of PET product features; write production full‑stack code; champion testing, observability, CI/CD and operational readiness; mentor engineers and collaborate with product to shape technical roadmap.

Design and develop massively parallel distributed database kernels for real-time analytics at terabyte and petabyte scale. Responsibilities include low-level C++ development, MPP query execution, SIMD and hardware optimization, distributed communication using MPI and RDMA technologies, database internals, vector indexing, in-database machine learning, performance tuning, architecture reviews, mentoring, and resolving scalability issues.

Lead high-leverage technical work across teams: define architecture and patterns, drive end-to-end delivery and operational excellence, ship AI-enabled systems, mentor engineers, set AI guardrails, and represent technical leadership internally and externally.