Top Principal Software Engineer Jobs in Boston, MA

The Principal Software Engineer will design AI-native systems, set standards for development processes, lead engineering practices, and deliver autonomous workflows to enhance business outcomes in wealth management technology.

The Principal Full Stack Software Engineer will design, develop, and mentor teams in building scalable web applications, influencing architecture and engineering standards in AI and cloud technologies.

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.

Lead the architecture, development, and delivery of high-performance audio software platforms, focusing on DSP, embedded systems, and algorithm optimization.

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 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 implementation of a scalable data lakehouse and streaming platform. Define technical strategy, build resilient systems, optimize performance, mentor engineers, and partner across teams to enable analytics and ML use cases using modern data platform technologies.

As a Principal Software Engineer, you will mentor junior engineers, solve technical problems, and enhance customer-focused software solutions in an agile environment.

Lead and mentor an engineering team building GovIntel and GovChannel product capabilities. Own technical direction, design and deliver scalable SaaS features, APIs, integrations, and platform reliability. Partner with Product, QA, Cloud Ops, and stakeholders to prioritize work, drive CI/CD and observability practices, lead reviews and incident response, and apply AI-assisted tools to improve development speed and quality.

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.

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.

Lead frontend architecture and implementation for a high-performance SPA and Node.js BFF. Solve algorithmic, concurrency, and memory challenges, optimize performance and builds, drive observability, security, and CI/CD, mentor engineers, and collaborate with product, UX, and SRE teams to deliver resilient, distributed real-time collaborative features.

Lead technical architect and hands-on principal engineer for the SOC Experience team, building scalable investigation workflows, agentic LLM features, automation, remediation actions, and analyst tooling. Drive architecture, mentor engineers, prototype solutions, ensure reliability and observability, and partner with product, UX, and SOC stakeholders to turn operational problems into auditable, production-grade systems.

Develop and architect microservices for CAD/CAM software, collaborating in an Agile environment to implement scalable solutions while ensuring technical leadership and adhering to best practices.

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.

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.

Design, develop, and productionize Python-based, scalable, secure GenAI/LLM applications for finance. Deploy cloud-native microservices on AWS, optimize performance and memory, validate components, collaborate with stakeholders, and mentor junior engineers to deliver knowledge-based investment tools.

Design, build, and evolve secure, reusable platform capabilities (AI runtime safety, AI gateway, CI/CD, IaC, cloud infra) to enable developer teams. Lead cross-functional alignment, operationalize monitoring and support, improve developer experience, mentor engineers, and drive adoption of paved-road secure delivery workflows.

The Principal Software Engineer will design and implement distributed systems, APIs, and data pipelines utilizing machine learning and large language models to enhance B2B marketing intelligence.

Lead design and ownership of an agentic orchestration platform for long-running, multi-agent scientific workflows. Architect durable, event-driven, cloud-native systems, define SDKs/APIs, deliver IaC reference implementations, optimize cost and scalability, set platform standards, and partner across modeling and product teams while mentoring engineers.

Lead design, development, and delivery of mission-critical SIEM platform features. Define technical vision, own quality and uptime, mentor engineers, collaborate cross-functionally, build AI-assisted workflows, and drive performance, monitoring, and architecture decisions.

Lead architecture and implementation of HubSpot's delivery platform, building large-scale CI/CD, build, test, and deployment systems. Design and ship AI-powered QA agents, drive platform roadmap toward extreme deploy throughput, own cross-team initiatives, and mentor engineering org while remaining hands-on in code and operations.

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.