Top Principal Software Engineer Jobs in Boston, MA

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.

Lead the rearchitecture and implementation of Arcadia's User Management system, focusing on authentication and authorization frameworks. Drive new systems and mentor engineers to ensure secure data access and operational excellence.

This role involves designing and developing core modules for an enterprise-level clinical data platform, ensuring compliance with quality standards, and collaborating with teams for software development and testing.

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 architecture, development, and delivery of high-performance embedded audio and DSP platforms. Define system-level design, translate audio algorithms (ANC/ANR, speech) to production, optimize real-time performance on DSPs and multi-core SoCs, enforce testing and best practices, and mentor engineering teams to deliver portable, reliable audio software.

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.

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 design and build of scalable backend systems and data platforms; own architecture and production deployments; improve reliability, performance, and observability; mentor engineers and collaborate with Product, Data Science, SRE, and Security.

Lead design, development, and maintenance of cloud-hosted Claims and Policy Center applications. Collaborate with distributed engineers, architects, and vendors in an agile environment to improve performance, solve complex system problems, enforce technical standards, and implement secure, scalable microservice and event-driven solutions using modern web frameworks and cloud technologies.

Lead architecture and technical direction for an AI-first SaaS product (Growth Studio). Define scalable services, APIs, data flows, and AI-enabled workflows; guide integrations, run architecture/code reviews and POCs; mentor engineers; produce technical documentation; and partner with product, UX, QA, and ops to deliver reliable, secure, and maintainable platform capabilities for GovCon customers.

Lead long-term technical strategy and execution across multiple teams, architecting and evolving foundational frontend/backend systems and platforms at massive scale. Drive AI/ML adoption, solve ambiguous, high-impact problems, remain hands-on in critical system design and implementation, and align senior leaders on roadmaps and engineering standards.

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.

The Principal Engineer will lead enterprise scalability efforts, driving architectural changes, optimizing systems, and integrating AI for improved operational performance across multi-tenant SaaS platforms.

Design and build integrations for AI-driven applications, develop databases, optimize performance, collaborate with scientists, and drive large-scale systems deployment.

The Principal Software Engineer will lead technical processes, design and develop Java-based applications, mentor developers, and ensure optimal application performance in collaboration with cross-functional teams.

Lead development of full-stack solutions, mentor teams, design scalable architectures, and improve system performance while managing technical projects and ensuring software quality.

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.

Lead design and delivery of cloud-based solutions, collaborate with customers and product teams, produce extensible code, mentor engineers, own design documents and dependencies, act as a designated responsible individual (DRI) including on-call system monitoring, and improve reliability, performance, and observability at scale.

Design and lead implementation of distributed, high-scale production systems. Drive cross-team architectural decisions, reliability engineering, performance tuning, and data modeling. Mentor senior engineers, shape engineering culture, and lead multi-unit technical initiatives.

Lead design, build, deploy, and support a new AI-driven enterprise SaaS platform. Own features end-to-end, drive technical designs, mentor engineers, enforce best practices, perform expert code reviews, and ship scalable production Python services with AI-assisted engineering workflows.

Lead design and build of scalable, cloud-native applications on Azure; drive front-end development (Angular/React), database architecture (SQL Server), microservices and event-driven APIs, CI/CD and DevOps practices, mentor engineers, and ensure secure, high‑quality software delivery aligned to business goals.

The Principal Software Engineer will develop imaging application software, create architecture, refine software processes, and manage technical teams, focusing on signal processing and software documentation.

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.

The Principal Software Engineer will architect and lead the integration of Xometry's AI marketplace into Siemens' CAD platforms, ensuring real-time insights and collaboration with engineering teams.

As a Principal Software Engineer, you will provide technical leadership, mentor engineers, guide innovation, and ensure operational excellence in software delivery.