Top Principal Engineer Jobs in Boston, MA

Principal Engineer responsible for defining the long-term architecture and modernization strategy for GitLab’s Fulfillment platform. The role drives technical direction across entitlements, licensing, provisioning, seat management, usage visibility, and cost management. Responsibilities include hands-on distributed systems engineering, migrations, performance and reliability improvements, cross-team influence, AI-assisted engineering adoption, and mentoring senior technical staff.

Leads technical strategy, architecture, and engineering execution across Atlassian’s Rovo Chat, Search, Growth, Apps, and Clients experiences. The role drives scalable AI foundations, Search and Chat convergence, personalization, experimentation, reliability, security, and operational excellence. It involves leading cross-organizational initiatives, partnering with product, design, data science, and machine learning teams, mentoring senior engineers, and shaping multi-year technical roadmaps for customer-facing applications.

Lead technical direction for Surety underwriting platform modernization using React, TypeScript, NestJS, and AWS. Design scalable systems, guide architecture and technical decisions, support contractor-led delivery teams, mentor engineers, and align product, engineering, and delivery stakeholders. The role balances hands-on technical work with principal-level leadership across complex enterprise modernization initiatives.

Serve as a hands-on cloud architect for the Engineering Platform organization. Design AWS-based system architectures, build Terraform and application prototypes, establish reusable cloud-native patterns, and guide SaaS maturity, security, compliance, resilience, cost management, and AI workloads. Partner with engineering teams and AWS architects, improve self-service infrastructure and governance, document technical decisions, influence technical direction, mentor senior engineers, and lead cloud-native workshops.

Leads architecture, development, optimization, validation, and production deployment of reusable audio DSP technology across product platforms. Translates MATLAB/Simulink algorithms into C/C++, optimizes fixed- and floating-point implementations on embedded processors, performs hardware bring-up and lab debugging, establishes validation standards, and mentors distributed engineering teams. The role requires deep DSP expertise, technical leadership, and onsite collaboration in Framingham, Massachusetts.

Leads the design, evolution, and migration of enterprise test automation frameworks and infrastructure. Builds Playwright and C#/.NET web automation, REST API and database validation, parallel execution, ephemeral environments, and CI/CD testing workflows. Provides technical leadership, code reviews, mentoring, architecture guidance, and organization-wide automation strategy. Collaborates with engineering, DevOps, architecture, and QA teams to advance shift-left testing, continuous testing, reliability, and scalable cloud-native quality practices.

Define Scribd’s technical vision for agentic engineering and establish architecture, patterns, and guardrails for AI-assisted software development. Lead internal developer tools, libraries, platforms, and engineering workflow improvements across codebases, CI/CD, and infrastructure. Partner with engineering leadership on ambiguous cross-organizational initiatives, mentor senior and staff engineers, and drive adoption of coding-agent capabilities throughout the organization.

Lead architecture and design of advanced mixed-signal CMOS ICs for pin electronics testing. Responsibilities include PLL design, multi-GHz clock distribution, multi-chip synchronization, phase interpolation, timing-error correction, and receive-path architecture involving CTLE, PGA, and A/D converters. The role requires multiple tapeouts, analog/RF design expertise, PCB and RF measurement experience, and technical leadership in high-performance semiconductor development.

Develops advanced signal processing and machine learning algorithms for radar, RF sensing, and electronic warfare applications. The role involves customer engagement, system capability development, prototype demonstrations, subsystem requirements, technical leadership, proposal support, and collaboration with multidisciplinary engineering and research teams. The engineer will lead researchers and apply algorithms from mathematical derivation through testing and performance verification.

Provides technical leadership for semiconductor product enablement from development through qualification, technology transfer, manufacturing ramp, and high-volume production. Connects product requirements with device physics, silicon technology, process integration, fab execution, yield, reliability, and product performance. Leads device development, process transfers, technical problem resolution, data analysis, risk mitigation, qualification, technology roadmaps, and manufacturing strategy while mentoring senior engineers.

Develop and lead enterprise full-stack applications using Java, Spring Boot, Node.js, React, AWS, APIs, and distributed technologies. Design scalable architectures, modernize applications, establish engineering standards, troubleshoot production issues, improve observability and performance, and support containerization and site reliability. Mentor engineers, collaborate with product and cross-functional teams, guide technical decisions, and drive agile delivery, automated testing, CI/CD, and resolution of technical debt.

Lead architecture, development, optimization, validation, and production deployment of reusable audio DSP components across multiple product platforms. Translate MATLAB/Simulink algorithms into optimized C/C++ for embedded DSPs and processors, guide fixed- and floating-point implementations, perform hardware bring-up and lab debugging, and establish validation and engineering standards. Mentor engineers and provide technical direction across distributed, cross-functional teams.

Own the implementation, hardening, and polish of game AI behaviors and systems for shipping. Collaborate with design, animation, and other disciplines to tune AI features and support the creative vision. Ensure reliable, stable enemy behaviors and enhance existing architecture. The role requires deep Unreal Engine and modern game AI experience, strong C++ skills, animation systems knowledge, and at least one shipped game title focused primarily on AI.

Lead the mobile engineering team in evolving iOS and Android applications toward an AI-native, thin-client architecture. Define participant API and platform direction, contribute Python to backend services, establish AI-assisted development processes, improve DevOps and continuous delivery, mentor engineers, and partner closely with Product and Design. The role requires principal-level technical leadership, product focus, system architecture expertise, and hands-on use of AI coding agents.

Provides technical leadership on complex, high-impact engineering projects from design through launch. The role involves architecture, company-wide initiatives, engineering excellence, mentoring technical leaders, and establishing standards for scalable, reliable, secure, observable systems. The engineer will collaborate across teams, communicate complex technical topics, and apply customer-focused decision-making and A/B testing techniques.

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.

Principal Engineer serving as the CTO’s technical deputy, leading day-to-day engineering execution, architecture, code reviews, developer support, and delivery. The role requires hands-on full-stack development across databases, backend, frontend, cloud infrastructure, and DevOps. It also champions AI-agent-assisted development by establishing workflows, guardrails, and quality standards. The engineer will mentor teammates, resolve technical blockers, improve reliability and documentation, and collaborate with technical, product, and research stakeholders.

Leads the architecture and hands-on implementation of connected firmware platforms, including wireless connectivity, embedded UI, provisioning, pairing, and app/cloud integration. Defines technical standards, reviews internal and partner designs, supports wireless certifications, and resolves interoperability issues. Establishes testing, build, coding, and reproducibility standards while mentoring engineers and influencing cross-functional technical direction. Requires deep embedded C/C++ expertise, connected-device architecture experience, wireless certification knowledge, and a track record in consumer electronics, IoT, robotics, or related high-volume products.

Leads architecture, reliability, and automation for cloud network foundations across AWS, GCP, Azure, and internal infrastructure. Designs routing, segmentation, firewalls, connectivity, access, and infrastructure-as-code systems; establishes SLOs, monitoring, incident response, and recovery practices. Builds reusable automation, improves change safety, partners across platform, security, IT, and engineering teams, serves as a senior escalation point, creates operational standards, and mentors engineers.

Own the architecture, technical direction, quality, and long-term support of SharkNinja’s consumer mobile application. Build hands-on with React Native, Expo, and TypeScript; design connected-device experiences, pairing flows, protocols, and real-time synchronization; and support BLE and WiFi reliability. Establish reusable patterns, libraries, testing, and release practices, lead architectural research, mentor engineers, collaborate with global teams, and onboard new products to the app.

Leads supplier quality for high-reliability printed wiring boards by conducting audits, capability assessments, source inspections, first article inspections, and process evaluations. Analyzes supplier metrics and defects, drives root-cause and corrective-action efforts, reviews PPAP and FAI submissions, and leads continuous improvement toward zero defects. Partners with quality, category management, and supply chain teams while providing technical guidance on PWB standards, manufacturing processes, testing, and acceptance requirements. The remote role requires approximately 50% travel to suppliers across the country.

Build and own Arcadia’s internal developer platform across a large-scale data lakehouse and Kubernetes applications. Develop self-service APIs, templates, golden paths, CI/CD capabilities, observability, security controls, and reliability practices. Lead platform migrations, improve developer experience, manage stakeholder needs and costs, set technical direction, and coach senior engineers. The role requires hands-on software development alongside expertise in cloud infrastructure, Kubernetes, networking, infrastructure as code, SLOs, incident response, and platform product management.

Leads process hazard analyses, layer of protection analyses, and PSM/RMP compliance audits for complex client projects. Facilitates HAZOPs and other PHA methods, interprets process drawings, prepares technical deliverables, ensures quality, and provides engineering leadership. Manages project scope, schedules, budgets, staff assignments, and client relationships while mentoring engineers, supporting business development, and identifying process safety improvements.

As a Principal Engineer - Steam Turbine, you will lead steam turbine engineering activities, mentor junior engineers, and support business development efforts while participating in client meetings and conferences.

Principal Engineer responsible for owning complex software initiatives from problem framing through architecture, implementation, deployment, production support, and continuous improvement. The role involves building web applications, services, APIs, MCP servers, data pipelines, and platform integrations; leading architecture and code reviews; improving security, reliability, and maintainability; mentoring engineers; and shaping technical strategy. The engineer will also use and improve AI-assisted development practices while maintaining human accountability for quality and operational outcomes.