Top Principal Engineer Jobs in Boston, MA

Provide technical direction for GitLab Dedicated, a managed single-tenant SaaS platform. Lead architecture and transformation across resilience, failover, tenant orchestration, change management, automation, and platform integrations. Identify systemic reliability and scalability risks, establish reusable platform patterns, strengthen service ownership, and guide cross-team technical decisions. Mentor senior engineers and advance engineering excellence across the organization.

Designs and develops internet-scale data processing, infrastructure management, and observability platforms across cloud and on-premises environments. Establishes engineering standards, resolves complex distributed architecture challenges, and provides technical leadership across the organization. The role requires experience with large-scale orchestration systems, internet protocols such as DNS, WHOIS, and RDAP, architectural trade-offs, and internet security technologies.

Serve as a global SME for Industrial Metaverse technologies (PLCs, IoT, cloud/edge, digital twins, AI, EMC/RED, cybersecurity). Lead standards work, develop test programs, perform and supervise complex testing, train staff, represent UL externally, and support clients and continuous improvement across regional or global labs.

Lead the architecture, design, development, integration, testing, and deployment of advanced radar systems. Research RF sensing approaches, translate customer needs into system concepts, define requirements and architectures, conduct simulations and performance analysis, and guide multidisciplinary teams across software, hardware, integration, and test. The role also involves customer briefings, technical reviews, modeling in Cameo, verification planning, and technical leadership of advanced development projects.

Provides technical leadership for embedded software architecture and development across a global fire detection portfolio. Defines design standards, leads complex embedded systems development, influences technology roadmaps, and drives quality, reliability, cybersecurity, and maintainability. Conducts architecture and code reviews, mentors engineers, collaborates across hardware and systems teams, supports connected IoT products, and contributes hands-on debugging and continuous process improvement.

Lead long-term strategy and architecture for cloud and on‑prem platform infrastructure, driving Kubernetes and multi‑cloud reliability, IaC/GitOps automation, observability, SLO/SLI/error‑budget practices, incident leadership, AI‑augmented tooling adoption, and mentorship of senior engineers to improve platform resilience and developer experience.

Architect and build a company-wide autonomous test platform for robotic systems, including versioned test data schemas, automated pipelines, CI/CD frameworks, hardware-in-the-loop integration, and executive dashboards. Drive adoption across test teams, support reliability modeling with traceable data, establish technical roadmaps, make build-versus-buy decisions, and mentor senior engineers while developing future technical leadership.

Design and evolve distributed search and analytics systems for the Splunk platform. Lead complex engineering efforts from design through delivery, improve performance and reliability, mentor engineers, collaborate cross-functionally, and work with customers to resolve production issues.

Leads enterprise platform engineering and AI enablement by building secure, scalable AWS platforms, internal developer services, automation, CI/CD standards, infrastructure-as-code practices, monitoring, reliability controls, and governance. Partners with architecture, security, infrastructure, data, and delivery teams to operationalize AI, machine learning, analytics, and generative AI workloads. Advises senior leadership, drives technical initiatives, improves developer productivity, mentors engineers, and supports regulated-industry compliance.

Provides department-wide technical direction for k0rdent across Kubernetes, AI infrastructure, AI applications, and observability. Designs cross-cutting systems, establishes engineering standards, resolves architectural risks, mentors Staff and Principal engineers, and aligns product strategy with durable technical execution. The role also engages customers, partners, upstream communities, and industry forums while contributing code and prototypes to solve complex infrastructure problems.

Provides principal-level systems engineering support across the defense acquisition lifecycle, including requirements analysis, architecture development, system integration, risk mitigation, test and evaluation, and sustainment. Translates operational requirements into technical solutions for the DAF Battle Network, develops multi-domain architectures, evaluates ICAM capabilities, and supports acquisition strategies, technical documentation, and executive briefings. The role is fully onsite at Hanscom AFB and requires an active Top Secret clearance with SCI eligibility.

Designs and develops innovative spatial computing, extended reality, and AI experiences for Fidelity’s innovation center. Responsibilities include rapidly prototyping applications, collaborating with design and product teams, building APIs and cloud-based systems, integrating hardware, supporting live interactive environments, and evaluating emerging technologies. The role requires expertise with immersive development platforms, databases, AWS, real-time graphics, and troubleshooting interactive experiences.

Provides principal-level systems engineering support for the Department of the Air Force Battle Network across acquisition, architecture, requirements, integration, risk mitigation, testing, and sustainment. Translates mission requirements into technical solutions, develops enterprise and multi-domain architectures, evaluates ICAM capabilities, supports cloud and DevSecOps initiatives, and prepares technical documentation and executive briefings. The role is fully onsite at Hanscom AFB and requires extensive Department of War and systems engineering experience.

Volunteer Principal Full Stack Engineer to lead and contribute across frontend and backend (React/React Native, Node.js, MongoDB). Own feature development, mentor engineers, collaborate with product/design, ship scalable code, and support CI processes. Must commit 4+ hours weekly and attend a weekly standup; first task includes launching a fundraising campaign.

Build and improve Azure Kubernetes Service capabilities for Linux and Windows containers. Develop distributed cloud infrastructure, automation, observability tooling, and reliability improvements at global scale. Support AI-native infrastructure, including GPU orchestration, model deployment, inference, and platform operations. Accelerate engineering workflows, prevent production incidents, integrate AI tools, and contribute to Kubernetes and cloud-native platform innovation.

Lead technical direction for Elastic’s billing experience platform. Design and evolve public and internal APIs, build full-stack billing and account-management features, and shape scalable architecture and data models. Improve reliability, observability, deployment, CI/CD, and incident response across cloud services. Mentor engineers, review technical work, influence roadmap priorities, collaborate across Product, Design, SRE, Finance, and Cloud teams, and participate in on-call rotations.

Lead architecture and technical direction for CMS Medicare Secondary Payer applications. Design and develop scalable Java enterprise applications, Spring Boot microservices, RESTful APIs, and secure full-stack solutions. Conduct design and code reviews, modernize legacy systems, resolve complex production issues, mentor developers, and promote secure coding, testing, and AI-assisted development practices.

Own the networking architecture and roadmap for AKS Flex and Unbounded, enabling secure, reliable, high-performance Kubernetes connectivity across sites, clouds, edge environments, and on-premises infrastructure. Design overlay and underlay networks, routing, encrypted tunnels, eBPF dataplanes, and distributed systems for high-latency and partitioned environments. Integrate InfiniBand and RDMA for AI workloads, lead cross-team architecture efforts, improve global fleet performance and reliability, and participate in production operations and on-call rotations.

Build and ship interactive creative and engineering tools using React and TypeScript. Design core interactions, visual systems, motion behavior, accessibility, and performance-focused UI. Partner with internal users to iterate on features, contribute to design systems, review code and designs, and bridge design and engineering. The role requires strong visual craft, interaction design expertise, production engineering skills, and experience delivering complex editors or interactive platforms.

Build product features across multiple technologies, collaborate with subject matter experts to improve member experiences, and enhance the technology platform. The role requires strong individual technical contribution, business judgment, comfort with ambiguity, startup experience, and the ability to work independently and collaboratively. Engineers should understand technologies deeply, learn continuously, and balance short- and long-term business value.

Develop low-level, high-performance instrumentation within CICS and z/OS using HLASM. Design production features for mission-critical mainframe environments, diagnose complex system behavior through dumps and traces, analyze performance bottlenecks, and collaborate with an experienced engineering team. The role requires deep z/OS and CICS internals expertise, systems programming knowledge, and proficiency with JCL, SDSF, and USS.

Provides technical leadership for architecture and evolution of large-scale distributed data platforms supporting Azure network telemetry. Designs streaming and batch systems, establishes reusable engineering patterns, drives cross-team technical strategy, and owns capabilities from design through production operations. Ensures scalability, reliability, security, performance, data quality, and operational excellence while mentoring engineers and influencing technical leaders. The role also involves architectural reviews, dependency management, risk reduction, and applying AI or machine learning approaches to operational systems.

Designs, develops, configures, and supports Edifecs healthcare EDI solutions and transaction mappings. Works with 837, 834, 835, 820, and 270/271 transactions; troubleshoots transmissions, configures validations, and develops Groovy scripts. Leads Agile and DevOps efforts, mentors engineers, supports QA, and designs scalable AWS applications using containers, microservices, and CI/CD. Provides technical leadership, architecture guidance, performance tuning, and stakeholder consultation.

Lead delivery of Unity Engine’s C#/.NET integration, including GC, JIT, AOT, runtime libraries, and compiler toolchains. Define technical vision, improve performance and reliability, guide cross-functional development, communicate roadmaps and metrics, support users, and mentor team members. The role requires deep C# and C++ expertise, compiler knowledge, hardware architecture understanding, and proprietary game engine development experience.

Leads discrete semiconductor product design, characterization, qualification, yield and quality improvement, cost reduction, and customer-facing engineering. Collaborates with foundry, test, manufacturing, QA, suppliers, and subcontractors to qualify materials and packages. Supports new and existing products, documentation, BOM development, military-standard compliance, failure analysis, and custom engineering. Mentors less experienced engineers and supports marketing and planning teams.