Ranjan Singh

Software Engineer II at Telos

Ranjan Singh

As a Software Engineer II at Telos. I am a dedicated Full-Stack developer with a passion for innovation and a keen eye for staying ahead in the rapidly evolving tech industry. My expertise lies in crafting visually appealing and seamlessly functional web applications using technologies such as React, React Native, Node.js, and Next.js. I am also skilled in AI development, leveraging frameworks like Langchain to build cutting-edge AI applications. I am committed to delivering exceptional results by prioritizing quality, efficiency, and elegance in every project I undertake.

Currently working on

Timeline

2024-2025

  • Architected and launched Telos, an AI-powered journal platform for intentional living (https://heytelos.com/).
  • Engineered a high-performance backend utilizing Server-Sent Events (SSE) and auto-scaling with Cloud Run, reducing response latency by 68% and supporting 1,000+ concurrent users with 99.9% uptime.
  • Designed and implemented an intelligent Chat Agent with Retrieval-Augmented Generation (RAG) capabilities using Langchain and multiple LLM providers including Claude and OpenAI, improving user engagement by 40% and reducing response time to under 2 seconds.
  • Contributed to Microsoft's Presidio open-source project, enhancing PII data de-identification capabilities with 2 merged pull requests improving accuracy by 5%.

2022-2023

  • Engineered an AI-powered personalized trip itinerary generator (Quick Start), serving 20,000+ travelers and reducing initial planning time by 70% through intelligent automation and user preference analysis.
  • Automated email attachment processing for travel planning workflows, eliminating 25+ hours of manual work per week.
  • Implemented AI-driven booking import functionality for transportation and accommodation, streamlining the reservation management process and reducing data entry errors by 80%.
  • Strengthened application reliability by implementing comprehensive error boundaries and Sentry monitoring, reducing crash rates by 45% and improving overall stability to 99.8% uptime.
  • Revamped backend architecture to boost concurrency, achieving a 3x scalability increase and slashing API response times by over 75%, from 8 seconds down to under 2 seconds.
  • Developed sophisticated internal tools for streamlined application management and comprehensive performance monitoring, reducing debugging time by 60% and improving deployment speed by 40%.
  • Completed advanced certifications in Software Architecture & Technology of Large-Scale Systems and Artificial Intelligence A-Z™, expanding technical expertise in enterprise-scale solutions.

2021

  • Architected and developed a robust Node.js backend using Express.js, successfully processing 20,000+ legal cases weekly across multiple law firms with 99.5% accuracy and zero data loss.
  • Enhanced system communication efficiency by implementing RabbitMQ message queuing between Crawler and Backend services, reducing pending request backlogs by 80% and improving processing speed by 3x.
  • Created and published sharp-multer NPM package, providing automated image resizing, optimization, and watermarking capabilities for multer file uploads, achieving 10,000+ weekly downloads and 95% file size reduction.
  • Integrated real-time in-app notifications using Socket.io, improving user engagement by 35% and reducing notification delivery time to under 500ms for 5,000+ concurrent users.
  • Successfully migrated React Native application from legacy version 0.53 to 0.60, ensuring compatibility with modern devices and achieving 30% performance improvement while maintaining 100% feature parity.
  • Developed and published custom React Native package Country Code Picker, contributing to the open-source community with 5,000+ monthly downloads and 4.8/5 user rating.

2020

  • Developed a comprehensive e-commerce platform using Next.js and Material-UI for Revo Telecom Parts Inc, managing 60,000+ SKUs with advanced product catalog functionality and achieving 40% increase in conversion rates.
  • Significantly improved SEO performance by implementing multi-language support across the entire product catalog, enhancing global market reach and increasing organic traffic by 150% across 8 international markets.
  • Engineered intelligent auto-localization features supporting 8 languages without relying on IP-based detection, improving user accessibility and experience while reducing bounce rate by 25%.
  • Architected and developed both native mobile application and backend infrastructure for wedding marketplace Wedcell, creating a comprehensive platform serving 2,000+ wedding service providers and 10,000+ couples with 95% user satisfaction rate.
  • Mastered modern web technologies including ReactJS, TypeScript, Redux, and Ant Design, expanding full-stack development capabilities and reducing development time by 45%.

2018 - 2019

  • Implemented advanced GPS-based location tracking solutions using React Native and Firebase, delivering precise real-time positioning capabilities with 3-meter accuracy for 1,000+ active devices.
  • Developed offline-first location tracking architecture, ensuring reliable data collection even in low-connectivity environments and achieving 99% data capture rate across 500+ remote locations.
  • Integrated Hermes JavaScript engine to optimize React Native application startup performance, reducing initial boot time by 60% (from 8 seconds to 3 seconds) and improving user experience metrics.
  • Built a sophisticated native IoT control application with Bluetooth and WiFi connectivity, enabling seamless device management and monitoring for 200+ connected devices with 99.2% uptime.
  • Designed and developed a 2D endless runner mobile game featuring custom character design using Unity Game Engine, achieving 50,000+ downloads and 4.2/5 app store rating, demonstrating versatility in game development.