Top Principal Engineer Jobs in Boston, MA

Design, build, and maintain MLOps software systems and ML pipelines; deploy, test, and monitor AI/ML models on cloud-native platforms; implement ETL and data workflows; ensure model performance, security, and scalability; lead technical roadmap, mentor engineers, and evaluate emerging MLOps tools.

Lead architecture, design, and development of embedded electronic systems including hardware, firmware (C/C++), PCB design, test and production software, system bring-up, troubleshooting, and manufacturing support while mentoring junior engineers.

Oversee complex projects for public sector and commercial clients, ensuring delivery, managing risks, and leading teams in digital transformation using Salesforce.

Lead design and implementation of RF hardware systems, collaborating with teams on system requirements and hardware designs, while supporting assembly, integration, and testing.

The Principal Model-Based Systems Engineer will lead development programs using MBSE approaches, mentor teams, and implement digital engineering goals, focusing on DoD systems.

The Principal Signal Processing Engineer will lead the development and application of algorithms for RF sensing, engage with customers, guide teams, and drive business development.

The Principal Radar Systems Engineer leads radar system development, collaborates with multi-disciplinary teams, and ensures effective solutions to customer needs while applying systems engineering principles.

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.

Design, implement, and validate DSP algorithms for licensable audio technologies (noise reduction, voice pickup, spatial audio, speech enhancement). Ensure algorithm robustness, portability, and scalability across embedded real-time platforms and partner products. Support integration, tuning, testing on hardware, evaluate third-party tech, and collaborate with systems, software, and product teams to enable partner delivery.

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 the engineering architecture for an AI-driven product, focusing on system design, collaborating with AI agents, and ensuring quality and scalability in large-scale SaaS environments.

Technical lead embedded in the Investment Innovation, Integration & Trading team to design and build prototypes, AI-enabled workflows, and production-ready full-stack applications for fixed income and investment analytics. Partner with analysts to scale proofs-of-concept, deliver reporting and visualization, and ensure robust data pipelines and tooling. Hands-on architecting, rapid iteration, and collaboration across business and engineering to operationalize AI artifacts and maintain high-quality analytics systems.

Lead long-term strategy and architecture for cloud and on‑prem platform infrastructure, driving Kubernetes and multi‑cloud reliability, IaC/GitOps automation, observability, SLO/SLI/error‑budget practices, incident leadership, AI‑augmented tooling adoption, and mentorship of senior engineers to improve platform resilience and developer experience.

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 architecture, modernization, and development of Group Insurance applications. Modernize mainframe monoliths into Java microservices and micro-frontends on cloud, mentor distributed Agile teams, collaborate with enterprise architecture, product owners and infrastructure, and enable test automation and integrations. Approximately 10% domestic travel.

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.

The Senior Principal Engineer will architect digital data paths for high-speed CMOS ICs, develop calibration algorithms, and lead design integration for broadband communication systems.

As a Principal Sales Engineer, lead technical sales engagements in healthcare, driving complex projects with executive stakeholders while mentoring teams and shaping product direction.

Lead the API and MCP platform strategy and delivery, defining standards for APIs, enabling agent-native workflows, and ensuring scalable systems while collaborating with AI and Data teams.

Lead design and development of an LLM-powered AI authoring platform focused on RAG, prompt engineering, data ingestion, automated document workflows, compliance testing, and cloud infrastructure optimization for Life Sciences regulatory documents.

The role involves developing advanced signal processing algorithms, leading projects, engaging with customers, and supporting business development initiatives. Requires deep technical knowledge and leadership in radar and electronic warfare solutions.

The Senior Kubernetes Engineer will manage and enhance Kubernetes clusters, automate deployments, ensure security, and collaborate with teams to deliver reliable containerized applications.

The Principal AI Engineer will design AI-powered workflows, partner with stakeholders, and build production-level systems in a cross-functional environment.

The Principal Front-End Engineer will enhance the Growth team's platform and infrastructure by developing tools, managing applications, and ensuring a high-quality user experience across projects.