Top Principal Software Engineer Jobs in Boston, MA

The Principal Software Engineer will lead the technical strategy for high-concurrency services, oversee backend design, integrate AI, and ensure operational excellence at Cars Commerce.

The Principal Software Engineer leads a team to develop full-stack real-time applications, integrates machine learning models, and influences software architecture in cloud environments while supporting healthcare analytics.

Lead architecture and engineering for Azure core platform: define technology requirements, resolve cross-team issues, drive systemic reliability/performance improvements, mentor engineers, support on-call operations, and apply AI/ML to cloud operations.

Lead design and delivery of a hyperscale deployment platform using AI to improve reliability and automation. Mentor engineers, own end-to-end features, drive automation and AI-powered solutions, and ensure high-quality, scalable, maintainable production software.

Lead design and operation of a massively distributed edge compute platform using hyperscaler services and Kubernetes. Design external APIs, optimize L7 traffic routing, ensure high availability, fault tolerance, security and data privacy. Collaborate across AI/ML, hardware, network, and security teams, present scalability and reliability metrics to executives, mentor engineers, and establish architectural governance.

Design and build Azure Kubernetes Service features and AI-native infrastructure, improve service reliability and developer velocity, automate incident prevention/remediation, integrate AI tools, and operate distributed, containerized systems at cloud scale.

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.

Principal Software Engineer focused on software design and development for network infrastructure, involving diagnostics, platform support, and driver design primarily in VXWorks and C/C++.

Designs and builds resilient, scalable cloud platforms and REST/GraphQL APIs (Node.js/TypeScript/JavaScript). Leads architecture, develops complex applications, ensures QA readiness, implements CI/CD, creates conversational chatbots and NLP integrations, mentors engineers, advises on technical strategy, and manages multi-platform project lifecycles.

The Principal Software Engineer will lead the design and development of scalable AI-native cybersecurity systems, drive technical initiatives, and mentor engineers while collaborating closely with cross-functional teams.

The Principal Software Engineer leads technical vision and strategy for the division, mentors staff, and drives architectural standards across multiple business units.

Senior backend engineer role owning architecture, implementation, and reliability across CloudZero products. Lead design decisions, mentor engineers, improve performance and scalability, collaborate with product and customers, and deliver production-grade data pipelines and cloud systems.

Lead architecture and technical strategy across an infrastructure platform ecosystem. Drive hands-on architectural improvements to graph engine and backend services, reduce technical debt, establish standards, champion AI-first engineering practices, run architecture/code reviews and mentorship, and collaborate with product and leadership to ensure scalable, extensible systems.

Lead design, development, and support of enterprise infrastructure and services. Drive architecture discussions, prototypes, capacity planning, and system launches. Troubleshoot performance, collaborate across teams and open-source communities, document solutions, and support on-call rotations to ensure reliable, scalable cloud and Linux-based systems.

Design and deliver large-scale, cloud-native and AI-enabled Kubernetes/AKS solutions. Implement, optimize, and maintain Kubernetes components and container orchestration across Azure, on-prem, and edge. Integrate AI capabilities, participate in on-call rotations, mentor engineers, and collaborate cross-functionally to improve reliability, observability, performance, and operational consistency at scale.

Lead technical design and hands-on development of low-latency, event-driven trading and market data platforms. Drive architecture, engineering standards, CI/CD, observability, and AI-assisted tooling; collaborate with product and solution teams; mentor engineers; ensure resilient, secure, cloud-native solutions aligned with enterprise strategy.

Lead design and implementation of Azure full‑stack, scalable skilling platform features. Drive CI/CD, reliability, automation, and AI/LLM-enabled capabilities. Mentor engineers, enforce engineering best practices, coordinate cross-team dependencies, and improve test automation and observability for enterprise-scale services.

Design and deliver large-scale, resilient AI and Kubernetes infrastructure for hybrid environments. Implement, optimize, and maintain cloud-native, container orchestration solutions; integrate AI capabilities; participate in on-call rotations; mentor engineers and drive reliability, observability, and performance at scale.

Design, implement, and maintain high-quality, highly available microservices for Azure Messaging and Fabric. Drive AI adoption to improve development practices, optimize system IO and performance, and lead innovation in product and engineering processes while following rigorous development and security screening practices.

Lead architecture and roadmap for Azure PostgreSQL systems; design and review scalable, maintainable database engine features (query processing, storage, transaction logging, recovery, versioning, IO, scale-out). Influence coding standards and run code reviews, write proof-of-concept or production code, contribute to open-source PostgreSQL/Linux, and participate in rotational on-call operations.

Lead the technical roadmap and design for Marqeta's core issuing and processing platform. Drive high-impact initiatives to improve performance, reliability, scalability, and cost-efficiency. Write, review, and optimize code across the stack, partner with product, mentor technical leads, and evangelize best practices for resiliency, security, and multi-region systems.

The Principal Software Engineer at Snout will define architectural direction, build features across the stack, and enhance team effectiveness, ensuring quality and performance.

Lead backend and full-stack engineering strategy, design and deliver scalable, secure distributed systems and microservices for government customers. Drive architecture, data design, observability, CI/CD, cloud-native patterns, mentoring, and large modernization initiatives while collaborating with product and stakeholders.

Lead design and prototyping of generative AI experiences for autonomy development; drive UX for Hivemind products; perform user research, collaborate with CTO and product leads, and deliver reference implementations and integrations across full-stack web and edge systems.

Define next-generation graphics and compute capabilities for Direct3D and HLSL. Collaborate with GPU vendors and industry groups, influence standards, design and ship new features, and analyze and optimize workloads across modern GPU architectures.