Top Principal Software Engineer Jobs in Boston, MA

Provides hands-on technical leadership for scalable full-stack web applications and core platform services. Designs architecture, develops and deploys secure software, resolves distributed-system issues, mentors engineers, and collaborates across product and QA teams. Integrates LLMs, AI-assisted workflows, and agentic capabilities into .NET and Python systems while applying responsible AI practices. Contributes to technical documentation, quality standards, regulatory compliance, and the full software development lifecycle.

Design and deliver developer tooling, frameworks, reusable templates, AI-assisted development infrastructure, authentication and identity platforms, and cloud-native services. Build and operate Java and AWS systems using Spring Boot and Kubernetes, establish engineering standards and guardrails, improve reliability and performance, and lead complex technical projects. Partner across teams to drive adoption, alignment, and measurable engineering productivity outcomes.

As a Senior Principal Engineer, you'll define and drive the technical strategy for customer experience platforms, lead architectural decisions, and mentor engineering teams to enhance customer and agent experiences.

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.

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.

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.

Principal Software Engineer designing and delivering full-stack, cloud-native solutions across React, Node.js, TypeScript, and Java. The role leads Micro Frontend strategy, AI-driven workflow development, distributed systems architecture, data quality, security, testing, observability, and reliability initiatives. Responsibilities include solving complex technical problems, collaborating cross-functionally, establishing engineering best practices, mentoring engineers, and driving scalable, resilient software delivery in an agile environment.

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.

Designs and builds high-performance C++ image-processing pipelines and services for an AI-driven cardiovascular medical imaging platform. Develops software for volumetric CT/CTA data, segmentation, registration, and clinically meaningful visualization. Optimizes algorithmic efficiency, memory usage, file I/O, and parallel execution using multithreading, CUDA, and profiling. Collaborates with machine learning and visualization engineers to deliver reliable, scalable production systems.

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.

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.

Own end-to-end development of storage management and automation tools: design and implement Python CLI and libraries, extend Ansible Collection modules, maintain containerized services, manage multi-distribution packaging and GitLab CI/CD, investigate field exceptions, and validate/promote releases across heterogeneous host and hypervisor environments.

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.

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.

Lead the design and development of Microsoft’s global-scale, Kubernetes-based cloud service platform. Provide technical leadership across teams, define requirements and architecture, mentor engineers, oversee project and release plans, and serve as a responsible on-call owner. Improve platform availability, reliability, security, observability, efficiency, and performance while standardizing service delivery across Microsoft cloud workloads.

Principal Software Engineer responsible for setting engineering standards across Shippo’s data organization. Designs and builds interfaces between application services, ML systems, and data platforms; develops scalable, secure, observable production systems; guides technical architecture through RFCs and design reviews; productionizes analytical and prototype work; advises on ML workflows and agentic AI; and mentors engineers while driving cross-team technical direction.

Define architectural direction for Azure Specialized platform services and lead the design of highly available distributed cloud systems. Drive reliability, scalability, observability, security, diagnostics, and operational improvements across engineering organizations. Establish service health frameworks, SLOs, metrics, and governance for mission-critical services. Mentor engineers, influence technical strategy, resolve complex cross-system challenges, and advance AI-assisted troubleshooting and platform modernization.

Designs and develops scalable full-stack software applications and platform features in a cloud-native enterprise environment. Leads application architecture, complex projects, testing, documentation, CI/CD implementation, risk management, and technical solution development. Collaborates with business and engineering teams, advises senior management, coordinates project delivery, and mentors junior engineers. Uses Angular and TypeScript for front-end systems and Java, Spring Boot, REST, databases, Docker, Jenkins, and Kubernetes for secure distributed backend and deployment solutions.

Architects, develops, and governs enterprise Archer GRC solutions, including workflows, custom objects, integrations, dashboards, reporting, and data models. Partners with risk, compliance, audit, legal, and business stakeholders to deliver scalable solutions. Leads application architecture, testing, documentation, project planning, technical strategy, and modernization efforts. Requires advanced Archer configuration and integration expertise using APIs, JavaScript, Python, SQL, and third-party platforms. Mentors engineers and advises senior management.

Lead the design and evolution of cloud-native platforms, distributed systems, and infrastructure services at large scale. Define architecture across compute, networking, storage, datacenter, and AI infrastructure environments. Improve automation, lifecycle management, observability, reliability, security, and developer productivity. Guide technical strategy across engineering organizations while contributing to GPU, HPC, bare-metal, networking, and distributed computing platforms. Mentor engineers and foster technical excellence through architecture reviews and cross-organizational collaboration.

Lead design, build, deployment, and operation of highly resilient, high-throughput configuration and publishing systems. Define long-term architecture and strategy, mentor senior engineers, diagnose and fix performance bottlenecks, and leverage AI tools to improve engineering productivity and platform capabilities.

Lead the technical direction for integrating algorithms on the Prism Mapping platform, focusing on real-time signal pipelines and optimization strategies. Collaborate with teams to ensure robust clinical performance and timely delivery of new capabilities.

Lead the technical direction and architecture for the core infrastructure of the Prism Mapping platform, ensuring reliability and performance in a medical device environment. Mentor engineers and drive technical improvements while communicating complex decisions to stakeholders.

Lead architectural design for real-time 3D visualization on the Prism Mapping platform, mentor engineers, and define the long-term visualization roadmap.

Lead the UI architecture for the Prism Mapping application, drive design and delivery of major subsystems, mentor engineers, and shape technical direction in a clinical environment.