Our client is looking for an experienced, detail-oriented Lead Full-Stack Developer to join us as a full-time remote contractor and become an integral part of our small, fast-moving team. You’ll take ownership of an existing mobile app codebase and lead hands-on architecture and development across the product backlog, shipping new features, maintaining the production system, and improving the platform’s robustness as we scale to a significantly larger user base.The product is built with React Native / Expo and Firebase, including Firestore, and integrates significantly with Google Calendar. You’ll collaborate directly with the Founder, CTO, and Product Manager to help drive the feature set, translate requirements into clean technical solutions, and ensure releases are stable, well-tested, and well-documented. You’ll report to the CTO and play a key role in shaping how we grows.This role is ideal for someone who loves building consumer products end-to-end, thrives in fast-paced startup environments, and takes pride in technical excellence, clear communication, and reliable delivery.What You’ll DoTake ownership of the existing React Native / Expo and Firebase codebase, ensuring it remains stable, maintainable, and well-structuredLead hands-on architecture decisions to improve scalability, performance, reliability, and development velocity, with the alignment and support of the CTOIdentify and address technical debt; evolve the architecture to support rapid feature development and a large increase in the user baseEstablish and refine engineering best practices (e.g. coding standards, review process, release hygiene)Implement new features and enhancements from the product backlog across mobile and backend systemsBuild and maintain Firebase/Firestore data models, security rules, and backend logic as neededWork deeply with Google Calendar syncing and related integrations to ensure data accuracy and a smooth user experienceContribute to future web implementation needs, requiring proficiency in React and ability to shape a consistent cross-platform architectureTroubleshoot production issues, implement fixes, and continuously improve app performance and stabilityCollaborate closely with the Founder, CTO, and Product Manager to clarify requirements, explore tradeoffs, and drive practical solutions that align with product goalsBreak down initiatives into clear technical tasks and provide accurate estimates and delivery plansMaintain a high bar for quality, including unit testing, edge cases, regression safety, and release readinessCommunicate progress clearly and proactively, surfacing risks early and proposing solutionsConfigure and maintain CI/CD pipelines for mobile and related services to support consistent, repeatable releasesImprove deployment workflows, build reliability, and release automationWrite and maintain technical documentation: architecture notes, setup guides, runbooks, and key system decisionsEnsure the team can operate and scale the system confidently through clear documentation and clean engineering practicesWhat We’re Looking For8+ years of professional software development experience, including significant hands-on full-stack workProven experience owning and evolving a production codebase in a fast-paced environmentStrong React Native/Expo experience and modern JavaScript/TypeScript proficiencyStrong Firebase experience, including Firestore data modeling and best practices for performance and securityExperience integrating with third-party APIs and sync workflows. Google Calendar experience is a major plusStrong React experience for future web implementation, and comfort designing shared patterns across platformsExperience designing scalable, robust architectures for consumer-facing applicationsExperience configuring and maintaining CI/CD pipelines and release workflowsAbility to write clear technical documentation and communicate complex concepts simplyStrong ownership mindset, proactive, accountable, and comfortable making decisions with imperfect informationExcellent written and verbal communication skills, especially in a remote-first environmentComfortable working directly with product leadership and helping drive the feature set with practical inputPreferred, But Not RequiredExperience working in a startup environment with rapid iteration and shifting prioritiesExperience with consumer-facing apps, especially family or lifestyle productsAn understanding of the realities of parenting and managing a busy family schedule, and a genuine interest in reducing that mental loadWhy Join UsHelp build a product that tackles a real, everyday pain for busy familiesJoin a small, collaborative team where your input has real impactEnjoy remote work with flexibility and autonomyBe part of the early journey and help shape how we grow