Laksh Kalra

Leading end-to-end backend architecture of the Smart Ring platform, owning system design, data models, API contracts, processing workflows, and delivery timelines. Technically leading a backend team of three engineers, coordinating with the frontend/mobile lead on architecture changes, API contracts, release priorities, and integration trade-offs. Architected a worker-based distributed system using Node.js, TypeScript, BullMQ, Redis, MongoDB, MySQL, and Azure to ingest, process, and serve wearable telemetry across health modules. Built ring-processing workers that transform raw device sync data into chart-ready payloads, derived metrics, and AI-ready health context for the GoodFlip mobile application. Established async job processing patterns including retries, Redis-backed coordination, distributed locking, and cache warming to improve reliability of long-running worker flows. Investigated production worker reliability via profiling, log analysis, and query review; identified optimization areas across raw-data processing, payload composition, and retention-heavy flows. Defined REST API response models and contracts consumed by React Native clients for device onboarding, daily summaries, module charts, vital details, and health-insight experiences. Contributed to Kaira, GoodFlip's AI-powered healthcare assistant, and led design of the Smart Ring memory layer for persistent, context-aware AI experiences from wearable health data. Supported AI-powered CGM systems with doctor-approved insights, glucose spike detection, MongoDB time-series data, and background sync flows running every three minutes. Conduct PR reviews and architecture decisions, mentor backend developers, and collaborate with product, QA, frontend, and engineering leadership to ship production-ready healthcare systems.

Joined as a founding engineer, building platform architecture from scratch including backend services, database schema, API design, deployment workflows, and mobile integration patterns. Designed a relational database schema for a multi-tenant product covering users, roles, permissions, collaboration flows, large file uploads, access control, and secure data handling. Built REST APIs and async workflows for file processing, RBAC, user collaboration, data consistency, and production-ready service behavior across the platform. Deployed and debugged backend services on AWS/Linux environments, managing configuration, storage integration, logs, memory usage, and performance bottlenecks, reducing downtime by 90%. Contributed to Java Spring Boot backend development by reviewing service logic, improving data-access behavior, and collaborating on PostgreSQL schema design and query optimization. Strengthened platform security by identifying OWASP Top 10 risks, tightening authorization behavior, and improving handling of user data across application workflows, eliminating critical vulnerabilities. Delivered React Native application features while maintaining backend reliability, API consistency, and integration quality across mobile and server-side workflows.

Core member of the product team contributing to 20+ internal and external products across the full development lifecycle from build through production deployment. Built and maintained full-stack applications using Node.js, Next.js, TypeScript, and JavaScript with a focus on reliability, maintainability, and production readiness. Designed and deployed a centralized OAuth 2.0 SSO system enabling secure authentication across multiple internal and external applications. Optimized MongoDB queries and data-access patterns for datasets exceeding 100M records, improving reliability and response performance for data-heavy workflows. Integrated third-party APIs including Spotify, Strapi, and Microsoft Graph API for secure data exchange supporting enterprise product workflows. Developed and maintained React Native Android apps and responsive web interfaces, supporting backend/API integrations and production release cycles.

Developed and maintained three React Native applications, PathTrak, and BizTrak deployed on the Google Play Store. Shipped product features, managed legacy codebases, resolved production issues, and supported smooth release cycles across mobile applications. Integrated encryption and secure communication patterns to protect application data against common mobile and network security risks.