Top Principal Engineer Jobs in Boston, MA

Build scalable AI capabilities for Fidelity Wealth, partnering with business, product, architecture, data, and platform teams. Develop secure, reliable, production-ready solutions; apply modern software architecture, cloud platforms, testing, and design patterns; lead technical discussions; mentor engineers; and deliver end-to-end full-stack systems.

Lead platform engineering initiatives and provide architectural direction for internal developer platforms, build systems, CI/CD pipelines, release automation, and cloud-native infrastructure. Improve software delivery through automation and AI-enabled engineering capabilities while ensuring scalability, reliability, security, and maintainability. Evaluate technologies, collaborate across teams, mentor engineers, and guide technical decisions.

Defines long-term software architecture and technical strategy for Bose’s automotive technology portfolio. Designs scalable, modular, configurable platforms that operate across automotive hardware, operating systems, customers, and product generations. Partners with audio, acoustics, signal processing, and AI/ML teams to productionize advanced capabilities, engages OEMs and ecosystem partners, leads complex architecture decisions, resolves technical challenges, and mentors senior engineers and architects.

The Principal Simulation Engineer designs and validates simulations for aerospace projects, leading integration and testing while managing diverse engineering teams.

Leads hands-on embedded firmware development, architecture, debugging, hardware integration, driver and communication-stack development. Designs RTOS-based systems, reviews schematics and PCB layouts, supports manufacturing, resolves system-level issues, leads technical reviews, improves engineering processes, and mentors firmware engineers. The role requires close collaboration across electrical, mechanical, systems, and software teams in product development environments.

Lead full‑stack development of customer‑facing features, own product lifecycle from design to release, build scalable AI‑enabled back‑end systems on AWS, improve CI/CD and testing, collaborate with product, design, and ML researchers, and ensure security and privacy best practices.

Design, build, deploy, and maintain resilient, scalable production systems for Toast’s retail customers. The role sets long-term technical architecture and strategy, communicates technical direction, mentors senior engineers, improves engineering productivity, diagnoses performance issues, and drives initiatives amid ambiguity. Engineers collaborate directly with retail customers, visit stores, understand operational workflows, and use AI tools to improve development velocity and quality.

The Principal Engineer will lead the design and delivery of core platform capabilities, focusing on scalable systems, AI application, and mentoring engineers while driving architectural decisions and improving operational systems.

Lead the architecture and implementation of scalable cloud compute functionality across ARM64 and x86 platforms. Design hypervisor layers, cross-platform build pipelines, and performance optimization solutions while writing, reviewing, documenting, and testing production software. Coordinate globally to deliver compute features and resolve low-level software issues. Provide technical, organizational, and functional leadership to engineers.

Leads electrical engineering design and delivery for municipal and industrial water and wastewater facilities, including treatment plants and pump stations. Provides technical leadership, client advising, design review, construction support, project oversight, mentoring, and business development. Develops power distribution, control, communications, lighting, and electrical infrastructure solutions while managing scope, schedule, budget, quality, and risk. Travel up to 25% is expected.

Design and implement music and voice processing algorithms in MATLAB/Simulink and deploy them as embedded real-time DSP software across multiple DSP platforms. Develop unit and system tests, collaborate with research and audio engineers, provide technical leadership and mentorship, and use lab tools (oscilloscopes, logic analyzers, emulators) to verify functionality.

Lead platform and system architecture for advanced audio and sound management across consumer and automotive products. Define system requirements, develop scalable architectures, guide trade studies, mitigate technical and safety risks, and drive cross-functional delivery from concept through launch using MBSE, analytical methods, and systems thinking.

Lead architecture, design, and delivery of custom manufacturing equipment. Translate process requirements into mechanical systems, make build-vs-buy decisions, prototype and deploy hardware, and establish practices for in-house equipment development while mentoring a growing team.

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.

Provide cross-functional systems engineering support for advanced thermal energy storage technology. Own system requirements and traceability, define subsystem interfaces, identify applicable codes and standards, lead FMEA, HAZOP, fault-tree, and risk mitigation activities, and support design reviews and test planning. The role also includes electrical systems analysis, hands-on shop-floor hardware inspection, lab troubleshooting, and collaboration across mechanical, electrical, chemical, and controls disciplines.

Build and maintain parsing infrastructure, SDKs, data models, and services for hardware design collaboration. Develop parsers for circuit-design formats, binary file-merging capabilities, test harnesses, developer tooling, and performance improvements. Collaborate with engineering, product, sales, and other stakeholders to define interfaces, requirements, timelines, and constraints while driving autonomous, cross-functional projects.

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.

Owns the design, operation, troubleshooting, security, documentation, and continuous improvement of Mimecast’s global corporate network. Responsibilities include managing multi-vendor infrastructure across routing, switching, wireless, SD-WAN, SASE, and out-of-band systems; leading upgrades; partnering with Security and IT teams; and using Python, Ansible, or similar automation to improve operational efficiency and configuration consistency.

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.

Leads production test engineering for electro-mechanical and electro-optical systems across defense and space programs. Develops and deploys in-process and final acceptance testing solutions, test equipment, checkout procedures, training, and corrective actions. Derives system-level integration and test requirements, manages technical risks, supports program execution, and mentors less experienced engineers. Requires substantial systems engineering experience and the ability to obtain and maintain a government security clearance.

Develops and maintains real-time embedded software for medical organ-preservation devices across the full product lifecycle. Responsibilities include requirements analysis, risk assessment, software architecture, implementation, testing, verification, regulatory compliance, audit and FDA submission support, and field-complaint root-cause correction. The role also manages software development procedures and projects while collaborating with stakeholders. It is onsite five days per week and may require up to 20% combined domestic and international travel.