Top Senior Level Software Engineer Jobs in Boston, MA

Lead technical direction and maintenance of a React Native mobile app for iOS and Android. Improve security, authentication (Okta/MSAL/OIDC), Intune device-compliance, CI/CD and release engineering, dependency and SDK upgrades, automated testing, and documentation. Mentor engineers, partner with Security/DevOps/Product, and own production support, crash triage, and app-store compliance.

Lead diverse technology projects in distributed microservices and full stack systems, mentoring team members and collaborating with product managers on cloud-based solutions.

Lead and grow an 8-10 engineer team building veterinary operations systems and care experiences. Own technical/operational delivery of scheduling, communications, and care workflows; provide architecture and reliability guidance; partner with Product and UX; drive engineering best practices, observability, incident management, and continuous delivery; hire and mentor engineers; define success metrics like reliability, throughput, and operational efficiency.

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.

Own end-to-end architecture for Klaviyo's partner systems, translating business needs into diagrams, data models, and design docs. Build and ship Apex, LWC, Flow, and complex integrations, maintain reusable assets in GitHub, run architecture and PR reviews, refine backlog with Product Owner, and mentor developers while serving as domain expert for GTM stakeholders.

Own and deliver Salesforce solutions (Apex, LWC, Flow) and integrations across the GTM stack. Build and maintain the partner portal and payments integrations, ensure secure data flows and platform health, triage high-impact issues, apply engineering best practices, use AI tools to accelerate development, and mentor junior developers.

Design, develop, test, deploy, and support full-stack web applications, RESTful APIs, integrations and automation using Vue.js, JavaScript, Python, PHP, relational databases, Retool and AWS. Build enterprise integrations (Boomi/MuleSoft or comparable iPaaS), leverage AI/LLMs and low-code tools, participate in Agile processes, troubleshoot production issues, ensure security and scalability, and mentor junior developers.

Lead and grow an engineering team (up to 12), own kanban-based delivery, translate business priorities into measurable outcomes, recruit and develop engineers, model AI-native practices, partner with Principal Engineer on technical direction, and maintain clarity and accountability across stakeholders.

The Lead Software Engineer will develop advanced technologies, design software solutions, and collaborate on multi-disciplinary teams to solve national security challenges.

Lead the Purchase team, mentor engineers, drive AI-native practices, manage product development, and define consumer-facing AI solutions for CarGurus.

Lead and grow a senior SaaS engineering team; hire, mentor, and set engineering standards. Drive cross-functional delivery with product and design, ensure testing, observability, and multicloud deployments, and architect systems that integrate generative/agentic AI while cultivating an AI-first culture.

Lead full‑stack development of React Native mobile apps and Node.js backends for digital therapeutics. Own architecture, build CI/CD and AWS infrastructure, design multi‑agent AI workflows, mentor engineers, and resolve cross‑cutting production issues.