Top Principal Software Engineer Jobs in Boston, MA

Lead the architecture and evolution of managed Kubernetes and cloud-native services. Provide cross-team technical oversight, standardize platform practices, integrate open-source technologies, improve scale, performance, security, and operational efficiency, and mentor engineering teams. The role requires expertise in Kubernetes-based platforms, container runtimes, cloud-native architectures, and Go, Python, or Bash.

Principal frontend-focused software engineer responsible for leading frontend architecture, standards, tooling, accessibility, performance, testing, and deployment practices. The role delivers scalable customer-facing web applications, component libraries, and design systems using React or Angular. It includes cross-functional product collaboration, technical decision-making, mentoring, modernization initiatives, and occasional full-stack work. The position is remote, requires U.S. citizenship, Public Trust 6C eligibility, and approximately 0–10% business travel.

Lead the technical vision, architecture, and roadmap for Pika’s web and multiplatform creative products. Design scalable user-facing systems, real-time collaboration, messaging, generative AI workflows, and cross-service observability. Partner with product and design leaders from ideation through launch, while driving architecture reviews, technical excellence, mentorship, and engineering strategy.

Leads the strategic direction of backend and full-stack engineering, architects scalable distributed systems and microservices, and drives modernization, reliability, security, and performance initiatives. Designs APIs, data architectures, pipelines, infrastructure, and observability practices; delivers customer-facing service improvements; establishes engineering standards; and mentors engineers. Collaborates across product and technical teams to make architecture and business trade-offs and lead large-scale initiatives from vision through production.

Design and build scalable AI-first experimentation and growth systems: telemetry, experiment assignment, feature flighting, rollout automation, and risk controls. Lead cross-team initiatives, partner with Product/Data Science/Design, write production code, review implementations, and raise engineering and experimentation quality across products.

Provides hands-on technical leadership for Pantheon’s P1 zero-to-one product and company-wide engineering strategy. Owns architecture across real-time collaboration, APIs, data, publishing, integrations, and developer experience; establishes reliability, security, observability, and delivery standards; guides build-versus-buy decisions; mentors senior engineers; partners with product, design, security, infrastructure, and customers; and contributes code to validate architecture and unblock critical initiatives.

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.

ABCorp is looking for a Principal Software Engineer to lead the technical direction of their Client Experience Platform, overseeing frontend, backend, and data architecture while mentoring engineers and collaborating with Product and UX teams.

Lead a full-stack product team to build secure financial and card issuance SaaS solutions while ensuring system reliability and compliance in a regulated environment.

Lead end-to-end design and delivery of AI-infused, enterprise full-stack applications on Azure. Architect resilient solutions, build Copilot/agentic features, enforce engineering best practices, mentor engineers, collaborate with PM/UX teams, ensure quality/reliability, and support production services and integrations.

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.

Own cross-team, platform-level engineering initiatives end-to-end: architecture, migrations, observability, on-call, and customer outcomes. Drive AI-native tooling and agentic AI adoption, mentor senior engineers, and set technical standards across teams.

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.

Lead the design, development, modernization, and governance of enterprise customer-data applications and integrations. Manage operational data stores, system dependencies, IAM integrations, security, compliance, DevOps practices, deployments, and production support. Define target-state architectures, guide technology modernization, oversee vendor teams, troubleshoot critical issues, and communicate technical strategies across business and technology teams while mentoring junior engineers.

Lead reliability, scalability, and operational excellence for large-scale Java distributed systems. Drive architecture improvements, incident management, observability, SLO adoption, automation, infrastructure strategy, and performance optimization. Influence cross-team technical decisions, mentor engineers, establish reliability standards, and guide incident response and durable remediation. The role requires hybrid work in Boston and participation in an on-call rotation.

Leads the architecture and development of scalable cloud-native enterprise applications on Microsoft Azure. Designs reusable software capabilities, front-end interfaces, database architectures, and microservices; owns the full software development lifecycle; and promotes secure, test-driven, maintainable engineering. Partners with architects and product managers, evaluates modern technologies, resolves performance and reliability issues, presents architectural decisions, documents systems, and mentors engineering teams while ensuring cybersecurity, data governance, and regulatory compliance.

Design and implement scalable cloud architectures to ingest and normalize telematics data, build front-end experiences, develop and secure APIs, optimize databases and performance, mentor engineers, lead technical direction, and ensure system reliability, scalability, and security for telematics-driven safety products.

Build and maintain parsing infrastructure, SDKs, data models, and services for hardware design collaboration. Develop parsers for circuit-design formats, binary file-merging capabilities, test harnesses, developer tooling, and performance improvements. Collaborate with engineering, product, sales, and other stakeholders to define interfaces, requirements, timelines, and constraints while driving autonomous, cross-functional projects.

Develops and maintains real-time embedded software for medical organ-preservation devices across the full product lifecycle. Responsibilities include requirements analysis, risk assessment, software architecture, implementation, testing, verification, regulatory compliance, audit and FDA submission support, and field-complaint root-cause correction. The role also manages software development procedures and projects while collaborating with stakeholders. It is onsite five days per week and may require up to 20% combined domestic and international travel.

Design and build distributed systems, high-performance APIs, real-time data pipelines, and intelligent LLM-powered applications processing billions of events daily. Develop advertising, identity, and intent platform capabilities using streaming, batch, and large-scale data technologies. Own system quality, scalability, performance, and observability while collaborating with product managers, data scientists, and engineers. Provide technical leadership and mentorship across initiatives involving ad infrastructure, identity resolution, behavioral analytics, and applied AI.

Design and build high-performance UI and APIs, manage database architecture, optimize systems for reliability and performance, and collaborate cross-functionally in a scientific context.

Architect and develop foundational edge-computing runtime and integration platforms for connected-home devices. Build software models for device, spatial, and occupancy data; prototype and productionize new concepts; evaluate architectures; and provide technical leadership through design reviews, coding standards, mentoring, and cross-functional collaboration. The role spans edge computing, IoT, distributed systems, embedded environments, intelligent agents, networking, and secure systems within an exploratory R&D organization.

Lead the architecture and modernization of a complex enterprise SaaS platform while remaining hands-on with critical software design and development. Define technical direction, improve scalability, reliability, security, performance, and maintainability, and guide design and code reviews. Partner across engineering and product teams, resolve complex technical challenges, establish engineering standards, mentor engineers, and translate architectural strategy into practical delivery.

Lead the technical vision, roadmap, and development of Elasticsearch’s ES|QL analytical engine and query capabilities. Design data-intensive systems, algorithms, APIs, and compute infrastructure; research search and analytics technologies; collaborate across product and engineering teams; mentor senior engineers; and contribute hands-on modern Java development. The role requires autonomous technical leadership, expertise in database internals and analytics systems, and the ability to guide complex projects from conception through delivery.

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.