Ravi Ranjan Kumar

Senior Software Engineer • Fullstack Developer (Backend Heavy) · Malviya Nagar, New Delhi, 110017 · +91 6201150218 · contact70raviranjan@gmail.com

Backend-heavy Full Stack Engineer with 5+ years of experience designing scalable, distributed systems across fintech, logistics, ecommerce, ride-hailing and social media domains. Specializing in monolithic and microservices architectures, real-time processing (Kafka, AWS Lambda), and system optimization for high availability and throughput. Experienced in building products from scratch, leading teams, and deploying robust APIs serving millions of users.

Experience

Senior Software Engineer (Technical Manager)

International Asset Reconstruction company (Blackstone Portfolio)

Fintech, Loan Resolution Portal - New Delhi

  • Architected a large-scale, distributed Kafka-based event processing system, handling 15,000+ incoming requests per minute across 5+ consumer groups for mission-critical flows like payment webhooks, audit logging, and campaign updates.
  • Designed and implemented a custom state machine–driven funnel system to track and transition loan accounts through multiple resolution stages.
  • Developed a modular factory-pattern-based orchestration layer to dynamically route requests to multiple third-party integrations.
  • Built and optimized a high-throughput queuing architecture using Amazon SQS and batch processing techniques to dispatch 400,000–500,000 campaign tasks per day.
  • Improved database query performance and system responsiveness by applying stream-based batch writes, read replicas, and index tuning.

Technologies: Node.js, Kafka, AWS (Lambda, SQS, CloudWatch, EC2), Redis, MongoDB, Microservices, Event-Driven Architecture, Java

April 2024 - Present

Software Developer (Team Lead)

Paras Technologies

Mohali, Punjab

  • Led and architected over 20+ full-stack applications from scratch across ecommerce, social media, logistics, and ride-hailing domains.
  • Implemented AI-powered features like guided interview practice and resume feedback using Vertex AI and Google Video Intelligence AI.
  • Notable projects: WorkUp (America's TikTok, with a professional twist), Doc Watch (logistics made easy)

Technologies: Node.js, Express.js, EJS, MongoDB, socket.io, AWS, GCP, Azure

May 2021 - April 2024

Software Development Engineer

Platform Tech Solutions

Panchkula, Haryana

  • Joined as a fresher and quickly ramped up on JavaScript, Node.js, and full-stack development.
  • Contributed to 4–5 full-cycle product builds in the ecommerce, affiliate marketing, and restaurant booking domains.
  • Notable projects: Cabaret (table booking app), Zoogol (social e-commerce platform)

Technologies: React, React Native, Node.js, MongoDB, AWS, GraphQL, Socket.io

January 2020 - April 2021

Education

Panjab University Chandigarh

Bachelor of Engineering
June 2016 - June 2020

Skills

Programming Languages & Tools
Technical Skills
  • Languages: JavaScript, TypeScript, Java, C, SQL
  • Backend: Node.js, Express.js, REST APIs, Multi-threading, Multiprocessing
  • Frontend: React.js, Redux, EJS
  • Architecture: Microservices, Event-Driven Architecture, Distributed Systems, High-Throughput Systems, Caching
  • Cloud: AWS (Lambda, EC2, S3, SQS, SNS), GCP, Azure, Docker, CI/CD, GitHub Actions
  • Databases: MongoDB, Redis, ElasticSearch, Firebase, PostgreSQL
  • Messaging: Kafka, SQS
  • AI/ML: OpenAI APIs, Vertex AI APIs, Video Intelligence API

Projects

WorkUp | America's TikTok, with a professional twist!

WorkUp is the social network app that uses video to let you explore topics of interest, connect with others and get hired.

  • Implemented multiple functionalities such as social login, chatting, audio video call, guided interview, interview analysis using vertex AI, post analysis, firebase push notification, post promotion

Technologies: Node.js, Express.js, MongoDB, AWS, Google cloud services, Vertex AI, Stripe

Doc Watch | Logistic Made Easy

Dock Watch is a cutting-edge web application tailored for truck drivers, offering a platform to rate, review, and access comprehensive information about shippers and receivers.

  • Implemented multiple functionalities such as social login, subscription, location based shipper search, profile verification like instagram

Technologies: Node.js, Express.js, MongoDB, AWS, Stripe, Twilio

Cross Fader | Cfader Radio

Developed a platform which allows users to listen to uninterrupted music.

  • Implemented live streaming, subscription and ads functionalities

Technologies: Node.js, Express.js, MongoDB, Azuracast, Stripe

BooMe | Platform for gig worker

Developed a platform which allows users to connect business, influencer and talent.

  • Implemented functionalities such as social login, chatting, stripe connect, subscription

Technologies: Node.js, Express.js, MongoDB, Stripe