Top Principal Engineer Jobs in Boston, MA

Owns resilience, performance, scalability, and operational cost improvements for a cloud-native platform. Designs and delivers full-stack solutions, builds monitoring and analysis capabilities, performs architectural and code reviews, and resolves complex production issues. The role requires pragmatic modernization judgment, AI-assisted development experience, customer or user accountability, and participation in a weekend on-call rotation.

Lead design and delivery of high-voltage substation and SCADA systems for datacenter projects. Oversee specifications, consultant management, utility interconnection, equipment procurement, testing/commissioning, and EMT modeling support. Collaborate with global teams, vendors, and operations to ensure compliance with Microsoft technical standards.

Lead architecture and hands-on development for Microsoft's virtualization platform, focusing on hypervisor and VMM capabilities. Design, implement, and optimize systems software across Windows, Linux, macOS, Azure, and containers. Improve performance, security, reliability, testing, and operational readiness; diagnose low-level hardware/software issues; enable virtualization on new silicon; mentor engineers; and influence platform strategy across teams and hardware partners.

Design and operate large-scale, AI-native cloud infrastructure (especially Kubernetes/AKS). Improve service quality, automate incident prevention/remediation, accelerate engineering productivity, and integrate AI tools into development workflows.

Lead as a customer‑embedded principal engineer to design, build, and ship production-grade solutions. Translate business needs into technical approaches, influence senior stakeholders, accelerate delivery in ambiguous environments, and transition work to FDE crews while driving long-term account impact.

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.

As a Principal Software Dev Engineer, lead full-stack engineering, oversee complex initiatives, mentor engineers, and align technical strategies with business goals to enhance content management systems.

Leads the architecture, design, and implementation of Vertica’s core database engine. Drives innovations across query optimization, distributed execution, storage, concurrency, scalability, and performance using C++. Defines long-term technical strategy, architects complex distributed database features, guides testing, collaborates with customers and cross-functional teams, mentors engineers, and influences product roadmaps. Requires deep database internals expertise, large-scale systems experience, and strong technical leadership.

Designs and leads large-scale software subsystems, architecture, coding standards, code reviews, debugging tools, performance optimization, refactoring, and QA automation. Guides business and technical solution definition, evaluates production readiness using objective metrics, and develops web content management, workflow automation, integrations, and database solutions. The role is telecommuting eligible throughout the United States.

Develop and implement scalable software solutions for banking operations. Design distributed service-based applications with strong security, maintainability, scalability, and availability. Work with AWS, Azure, CI/CD, big data, and multiple programming languages and front-end frameworks. Improve application performance, address vulnerabilities, collaborate with stakeholders, support Agile practices, mentor junior engineers, conduct code reviews, and maintain technical documentation.

Leads architecture, technical direction, and hands-on development of robotic manipulation software. Develops motion planning, kinematics, control, multi-arm coordination, simulation, hardware integration, and distributed-system interfaces. Oversees testing, deployment, production support, troubleshooting, design reviews, and engineering standards while mentoring engineers and coordinating with multidisciplinary teams.

Provides technical leadership for Bluehost’s large-scale hosting platform. Sets architecture standards, designs Python and MySQL backend systems on Linux, modernizes Perl and cPanel integrations, and drives reliability engineering practices. Leads complex incident root-cause analysis, establishes AI-augmented delivery standards, mentors senior engineers, and shapes multi-quarter technical roadmaps across the organization.

Leads new product introduction manufacturing for complex FDA- and ISO-regulated electromechanical medical equipment. Oversees design transfer, manufacturing readiness, DFM/DFA, process development, validation, tooling, automation, testing, troubleshooting, and commercialization. Coordinates cross-functional engineering, quality, regulatory, supply chain, and manufacturing teams; establishes process metrics; and provides technical leadership and mentorship without direct people-management responsibility.

Lead performance and reliability initiatives across Sonos embedded player APIs and control components. Design architectural improvements, optimize player-to-app and player-to-cloud communication, analyze telemetry, and resolve complex multithreaded system issues. Collaborate with App, Cloud, Security, Data, UX, PM, and QA teams while mentoring engineers, participating in the full software development lifecycle, and presenting technical proposals to leadership.

Lead development and operation of a scalable Kubernetes-based cloud-native platform. Shape the engineering roadmap, deliver enterprise platform capabilities, establish best practices, mentor engineers, and collaborate across Agile teams. Build highly available and fault-tolerant production services using Kubernetes and cloud-native technologies, while applying expertise in Go, Python or Bash, networking, Linux, and CI/CD practices.

Own the architecture, product direction, and hands-on development of Phoenix’s payments infrastructure across processors, gateways, vaults, tokenization, wallets, routing, authorization, disputes, fraud, reconciliation, and reliability. Lead merchant and processor integrations, improve approval rates, manage payment-method portability, maintain PCI-compliant systems, and own incident response. The role combines principal engineering with payments product ownership, requiring direct customer engagement, roadmap decisions, technical design, coding, and accountability for business outcomes.

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.

Senior/Principal DevOps Engineers will deliver cloud and infrastructure projects for small, medium-sized, and enterprise clients. Responsibilities include DevOps project delivery, staff augmentation, fractional retainers, and solution consulting using AWS, GCP, Azure, infrastructure-as-code, Kubernetes, Helm, Docker, and scripting languages. Strong communication and project management skills are required. Roles are available full-time or part-time as 1099 contractor engagements for US-based workers.

Design, build, test, and support EPIC integration solutions across the full interface lifecycle. Gather requirements, resolve integration issues, develop standards and documentation, and provide production support within a remote, volunteer, part-time setup.

Leads architecture and development of Azure Storage table, metadata, and indexing systems at massive cloud scale. Designs distributed-system primitives for partitioning, indexing, transactions, consistency, replication, caching, and high-performance data access. Drives architectural decisions, prototypes innovations through production, and improves performance, scalability, reliability, and cost efficiency. Requires deep expertise in distributed storage, databases, or large-scale systems.

Own end-to-end DFT architecture, implementation, verification, DRC closure, test coverage, timing constraints, and post-silicon debug for ASICs. Work across Logic BIST, MBIST, BISR, scan compression, Boundary Scan, JTAG, ATPG, and mixed-signal IP integration. Collaborate with architecture, RTL, physical design, and product teams to resolve design and testability issues, automate flows using TCL, support hierarchical integration, and achieve first-pass silicon success.

Leads technical delivery architecture for complex mainframe modernization projects. Designs and implements Rocket Software solutions, manages technical project scope, develops proofs of concept, guides modernization and migration efforts, leads technical teams, communicates risks and requirements, estimates changes, conducts code reviews, and advises customers. The role also supports presentations, training, defect resolution, automation pipelines, DevOps practices, and modernization of COBOL applications and mainframe data.

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.

Lead technical direction for Elastic’s core billing platform across cloud providers. Design and operate scalable billing systems, data pipelines, APIs, and PostgreSQL architecture. Improve reliability, observability, incident response, deployment, and CI/CD practices. Partner with SRE, Cloud Infrastructure, Product, Design, and Finance teams, guide architecture and roadmap decisions, review technical work, mentor engineers, and participate in on-call rotations.