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Jayasurya Appu

Jayasurya T Appu

Architecting Scalable
Backend Systems.

Hi, I'm Jayasurya T Appu. A Backend Engineer specializing in Node.js, Python, and microservices that power high-throughput applications.

Experience

Carclenx (Pexa)

Software Engineer

JULY 2025 – PRESENT

  • Designed and scaled backend systems handling ~1000 requests/sec in production.
  • Built Worker & Staff Analytics system, reducing cancellation rates by ~80% through data-driven task assignment.
  • Engineered automated Payroll Processing system for ~200 employees using message queues, reducing manual workload by ~70–80%.
  • Migrated WhatsApp automation from third-party dependency to an in-house system, reducing external costs and driving a ~20% increase in lead generation.
  • Stabilized legacy backend systems by fixing exception handling and server issues, reducing downtime and preventing missed requests.
  • Optimized database queries and backend workflows, improving API response times by 30–50%.
  • Led a team of 5 developers, managing task distribution and code reviews.

Cordova Educational Solutions

Software Developer

OCT 2024 – JUNE 2025

  • Developed and maintained backend APIs and frontend modules for an LMS (Learning Management System) platform using Node.js and Angular.
  • Built new REST API endpoints and UI features to support internal workflows and user-facing functionality.
  • Debugged production issues and optimized backend logic and frontend performance to improve application reliability and responsiveness.
  • Worked on authentication flows, API integrations, and feature enhancements for production applications.
  • Collaborated with team members to implement new features, fix bugs, and maintain stable application releases.

Quest Innovative Solutions

Junior Software Engineer

DEC 2022 – SEPT 2024

  • Designed and developed 20+ REST APIs, improving backend efficiency and reducing manual processing workflows.
  • Built backend services using Node.js and Python (Django) for business-critical applications.
  • Optimized backend performance through efficient query design and logic improvements.
  • Integrated frontend applications (React, Angular) with backend APIs, ensuring stable and efficient data flow.

Carclenx (Pexa)

Full Stack Developer

JAN 2022 – JUNE 2022

  • Developed secure RESTful APIs and integrated third-party services.
  • Built admin dashboards with Angular, ensuring real-time backend integration.
  • Improved application reliability by ensuring consistent frontend-backend communication.

Technical Arsenal

Systems

Node.js, Express.js, Python, Flask, Django

Architecture

Microservices, REST APIs, gRPC, Web Sockets

Database & Data

MongoDB, SQL, Redis, Kafka

Infrastructure

Docker, Nginx, Google Cloud, Docker Compose

AI Tooling

Cursor, ChatGPT, Google Antigravity

AI & ML

RAG, embeddings, machine learning, NLP, computer vision

Featured Projects

Microservices E-commerce

Designed and implemented a highly-scalable event-driven backend system. Utilized Kafka for event streaming and gRPC for blazing-fast inter-service communication.

Node.jsKafkaDocker

AI Chat with RAG

Developed a sophisticated backend for semantic search. Integrated a local Mistral LLM and ChromaDB for instant vector retrieval against document embeddings.

FastAPIMistral LLMChromaDB
Login Interface
Chat History
Chat Interface