Role Description We are currently seeking a Hybrid Fullstack Software Engineer. This role is responsible for developing highly performant fullstack applications while helping maintain and evolve the infrastructure that supports our engineering ecosystem. You will be expected to leverage modern tooling — including AI-assisted development workflows — to move quickly while maintaining quality. - Design & Development: - Architect, design, and build scalable fullstack applications and microservices with long-term maintainability in mind. - Develop modular, serverless microservices in a cloud-native AWS environment. - Use AI-assisted coding tools responsibly to accelerate development while maintaining engineering rigor. - Innovation & Collaboration: - Participate in ideation sessions and rapid prototyping efforts. - Translate ambiguous business problems into pragmatic technical solutions. - Collaborate closely with stakeholders, designers, product owners, and engineers to ship high-impact software. - Quality & Testing: - Write clean, well-documented, testable code. - Build unit and integration tests to support rapid iteration. - Debug, troubleshoot, and resolve production issues with strong ownership. - DevOps & Infrastructure: - Implement and optimize CI/CD pipelines to support fast, safe deployments. - Support infrastructure-as-code using sst.dev, CloudFormation, Pulumi, or Terraform. - Monitor, maintain, and optimize applications in high-volume production environments. - Continuous Improvement: - Stay current with emerging tools, AI workflows, and modern engineering practices. - Share best practices and help raise the engineering bar across teams. - Contribute to reusable tooling, frameworks, and internal accelerators. - Compliance: - Maintain HIPAA/patient confidentiality. - Employee has an individual responsibility for knowledge of and compliance with laws, regulations, and policies. - Compliance is a condition of employment and an element of job performance. Qualifications - 3+ years fullstack engineering experience. - Strong proficiency in React, TypeScript, and Node.js. - Next.js experience is a plus. - Proven experience designing and building production-grade fullstack applications. - Understanding of microservices, especially in serverless AWS environments. - Experience with AWS services such as Lambda, SNS, SQS, DynamoDB, RDS, S3, and CloudFront. - Experience supporting and debugging systems in high-volume production. - Familiarity with Git, Jira, and general system/network administration. - Experience with infrastructure-as-code. - Bachelor’s degree in Computer Science or related field preferred (not required). - Experience using AI-assisted code tools (e.g., Cursor, Claude Code, Codex) as part of a responsible development workflow. Requirements - Strong end-to-end ownership — from idea to production. - Ability to build scalable systems in cloud-native/serverless architectures. - Comfort working in fast iteration cycles with AI-assisted development workflows. - Excellent communication with both technical and non-technical stakeholders. - Curiosity, creativity, and a bias toward experimentation. - Ability to simplify complexity and ship pragmatic solutions quickly. - A team-first mindset with no ego and a desire to elevate those around you. Benefits - Competitive Pay - Health Plans with FSA or HSA options - Dental and Vision Insurance - Optional Life Insurance - 401K with Company Match - 12 weeks of parental leave for birthing parent / 4 weeks for non-birthing parent(s) - Additional parental benefits including fertility stipends, free diapers, breast pump - Paid Holidays - PTO accrual from day one - Employee Assistance Programs - And so much more!

• Owning feature development from inception to outcome • Working across our entire stack (with help from experts when needed), including: - Frontend - Backend - Data - DevOps • Shipping regularly, showing value to stakeholders as early as possible • Iterating on feedback from stakeholders

• Shape the technical direction of Life360’s Ads AdServer and Exchange platform, ensuring it scales reliably to support 20+ billion daily events with strict latency and availability targets. • Drive architectural decisions that improve system resiliency, fault tolerance, and performance across distributed, multi–data center environments. • Elevate the engineering bar by setting standards for design quality, scalability, observability, and operational excellence. • Enable revenue growth by integrating demand and supply partners and strengthening Real-Time Bidding and auction capabilities. • Partner with Product and Design to unlock new monetization opportunities through innovative ad formats and platform capabilities. • Anticipate scaling challenges and proactively design solutions before they impact customers or business performance. • Lead complex technical initiatives end-to-end, aligning multiple teams around clear architectural outcomes. • Advance automation and quality practices, including AI-driven API validation and testing strategies, to improve velocity without compromising stability. • Improve platform reliability by strengthening monitoring, incident response, and root cause analysis practices. • Mentor senior engineers and act as a force multiplier, increasing the overall effectiveness and technical depth of the organization.

• Design & Build Across the Stack – Design and implement features end-to-end, from robust backend services and APIs in Java/Kotlin and Spring Boot to polished, responsive user interfaces in Angular. Own the full lifecycle of features - database schema to UI component - while maintaining high code quality standards and contributing to architectural decisions. • Collaborate & Deliver – Work within agile product teams to deliver high-quality features, participate in code reviews, and contribute to technical discussions across both backend and frontend. Partner with designers and product managers to translate requirements into complete, working solutions. • Innovate & Improve – Tackle complex technical problems that span the full stack, propose innovative solutions and continuously improve our development practices, tooling, and user experience. • AI-Accelerated Development – Leverage AI coding assistants and tools to accelerate development velocity across the full stack. Help establish and refine AI-assisted development workflows, prompting strategies, and best practices for the team. Evaluate and adopt emerging AI tools that improve code quality, testing, and developer productivity. Contribute to a culture where AI is a natural part of the engineering workflow, not an afterthought.