Top Senior Level Software Engineer Jobs in Boston, MA

Leads multiple engineering teams, owning software delivery, SDLC quality, people management, strategic alignment, resource planning, incident governance, and team development. Partners with Product and business stakeholders on prioritization, estimation, communication, execution, and performance metrics. The role requires experience with large-scale, low-latency distributed systems, agile delivery, DevOps, CI/CD, automated testing, infrastructure as code, distributed teams, and scalable data technologies.

Designs, develops, integrates, tests, and supports scalable data integration solutions for Liberty Mutual’s OneGL finance ecosystem. Leads improvements to data pipeline performance, scalability, maintainability, availability, and resilience. Responsibilities include data analysis, defect investigation, test scripting, architecture documentation, requirements and solution design, implementation support, cutover planning, production troubleshooting, and collaboration with technical and business stakeholders supporting the financial month-end close process.

As a Software Engineer III, you will design, build, and enhance high-complexity components, mentor team members, and collaborate on projects, ensuring high-quality code and customer-centric solutions.

The Senior Applications Developer will create and enhance applications for internal users, provide technical support, and integrate various systems while leading multiple projects.

Develop and deploy autonomy software for unmanned surface, underwater, and aerial vehicles in maritime missions. Responsibilities include motion planning, localization and tracking, safety assurance, COLREGS adherence, multi-agent coordination, distributed optimization, rigorous software testing, platform integration, deployment support, mission-log analysis, and autonomy R&D. The role also involves cross-functional collaboration, customer and demonstration support, roadmap development, and mentoring junior engineers. Travel is typically approximately 25% annually.

Develop and customize insurance applications on the Guidewire platform (PolicyCenter, BillingCenter, ClaimCenter). Design, code, test solutions using OOP and Guidewire technologies, manage system configurations, mentor junior staff, build client relationships, and apply firm methodologies to deliver high-quality insurance technology solutions.

Lead the Customer Agent AI project at Klaviyo, managing engineering teams, defining technical direction, and driving architectural decisions to develop a conversational AI platform.

Lead and grow multiple product-focused engineering teams to design, build, deploy, and operate scalable, highly available full-stack and microservice solutions on AWS. Mentor engineers, drive engineering practices, break monoliths into microservices, improve velocity, and collaborate with product managers to deliver finance-focused systems including event-driven streaming and integrations.

Build and maintain scalable backend systems and APIs for high-volume, real-time sports betting applications. Own the full software development lifecycle, deliver production-ready features, resolve production issues, optimize performance and reliability, collaborate with product and engineering teams, and mentor peers. Requires backend development experience with C# or Java, cloud-based distributed systems expertise, automated testing proficiency, and strong object-oriented design knowledge.

Designs and implements scalable data processing, analytics, machine learning, ETL, and cloud-native workflows. Builds data ingestion pipelines, infrastructure, data models, dashboards, and machine learning deployments using AWS services. Ensures data quality, integrity, and operational performance through monitoring and troubleshooting. Collaborates with data scientists, analysts, product managers, and engineers to gather requirements, manage backlogs, document processes, and deliver reliable solutions using Agile practices.