[dev.]
Available for Product & Backend Engineering roles•Kolkata & Chennai, India

I am Devjeet Saha and I build

Product &
Backend.

Architecting resilient distributed backends, low-latency microservices, and high-impact products.

SRM Institute of Science and Technology · CGPA 9.01
Distributed Systems & Product Engineering•India
Philosophy & Focus

Iarchitectresilientdistributedbackendsystemsthathandlehighthroughputwithatomicprecision,andbuildintuitivedigitalproductsthatsolverealproblems.Fromlow-latencyratelimitersandtaskqueuestofull-stackplatformsandclinicaldeeplearningsystems,Iengineersoftwarewherereliabilitymeetsscale.

Product & Systems Portfolio

Selected Work.

Scroll or drag horizontally to inspect repositories (9 projects)
backend
01 / 09

RateGuard – Distributed Rate Limiting Service

Distributed rate limiting microservice architecture enforcing multi-tier limits at sub-5ms latency with atomic Redis Lua scripts.

Result 01Token Bucket & Sliding Window algorithms
Result 02sub-5ms latency across 3 instances
Result 030 race conditions over 10K+ load tests
Result 040 limit breaches on 500+ concurrent connections
Spring BootRedis LuaPostgreSQLDocker+1
backend
02 / 09

Distributed Job Scheduler & Queue Engine

High-throughput distributed task queue and worker coordination engine designed for fault-tolerant asynchronous job scheduling.

Result 01Fault-tolerant worker orchestration
Result 02Heartbeat health monitoring
Result 03Exponential backoff job retries
Result 04Sub-millisecond queue dispatching
TypeScriptNode.jsRedisDocker+1
backend
03 / 09

High-Throughput Message Caching System

Ultra-fast in-memory caching and queuing service optimizing high-throughput message persistence and instant retrieval.

Result 01Sub-millisecond read/write latency
Result 02LRU eviction with TTL expiration
Result 03Thread-safe atomic operations
Result 04High concurrency throughput
Node.jsIn-Memory CacheRedisConcurrency
backend
04 / 09

Lakeflow Databricks Data Pipeline

Scalable cloud data engineering pipeline on Databricks executing automated data ingestion, transformation, and medallion storage.

Result 01Automated ETL ingestion pipelines
Result 02Delta Lake ACID transaction guarantees
Result 03Automated data quality verification
Result 04Scalable batch & stream architecture
PythonApache SparkDatabricksDelta Lake
product
05 / 09

AutiSense – Autism Screening Platform

Comprehensive pre-autism screening product for kids aged 2–6 pairing deep CNN computer vision with clinician dashboards.

Result 01Pre-autism screening for ages 2–6
Result 02CNN on 5,000+ labeled samples
Result 0386%+ classification accuracy
Result 04sub-200ms REST inference latency
DartFlutterReact JSFlask+2
product
06 / 09

ReHearse – Sheet Music to Playable Audio

Interactive music product converting scanned sheet music into real-time playable audio with step-by-step practice tutorials.

Result 01Live App Store product
Result 0290%+ OMR sheet accuracy
Result 03100+ active musicians
Result 0425% reduction in learning curve
PythonAudiverisAzureDocker+2
product
07 / 09

TripSync – Collaborative Travel Platform

Full-stack collaborative travel platform enabling groups to plan itineraries, split shared expenses, and synchronize schedules in real time.

Result 01Real-time collaborative planning
Result 02Integrated itinerary sync
Result 03Smart group expense tracking
Result 04Interactive map & timeline views
TypeScriptReactNode.jsPostgreSQL+1
product
08 / 09

ReplyMate – Intelligent Response Assistant

AI-powered productivity extension generating contextual, intelligent draft responses for communications in one click.

Result 0116 GitHub Stars community acclaim
Result 02Context-aware message drafting
Result 031-click tone customization
Result 04Zero-friction browser integration
JavaScriptBrowser ExtensionLLM APIReact
product
09 / 09

Fleet Management System (FMS)

Enterprise fleet management system streamlining vehicle service scheduling, defect tracking, and historical audit logs.

Result 01100+ vehicle fleet management
Result 0240+ sprint user stories delivered
Result 0330–35% reduction in manual overhead
Result 0410-member Agile engineering team
SwiftUIKitREST APIsAgile / Jira
01 / Skills
Systems & Algorithms

Languages

Proficient across backend and systems languages, from Java, Python, and C++ for distributed algorithms to TypeScript, Go, and SQL.

10+Core Languages
9.01CGPA at SRMIST
Java01
Python02
TypeScript03
C++04
Go05
SQL06
JavaScript07
C08
Dart09
Swift010
02 / Skills
Microservices & Full-Stack

Frameworks & Backend

Building scalable product architectures and high-throughput microservices using Spring Boot, Node.js, Express, React, and Flutter.

20+Repositories Shipped
1,000+Product Users
Spring Boot01
Node.js02
Express03
React JS04
Django05
Apache Spark06
Flutter07
Firebase08
Supabase09
03 / Skills
Distributed Concurrency

Systems & Tools

Architecting distributed rate limiters with atomic Redis Lua scripts, Dockerized Azure pipelines, and PostgreSQL persistence with zero race conditions.

10K+Load Test Requests
<5msResponse Latency
Docker01
Redis02
PostgreSQL03
Databricks04
Git05
Postman06
MySQL07
MongoDB08
Cassandra09
04 / Skills
Vision & Medical AI

Machine Learning

Training deep convolutional neural networks and computer vision pipelines for clinical autism screening and optical music recognition.

5,000+CNN Image Samples
86%+Model Accuracy
TensorFlow01
PyTorch02
OpenCV03
Keras04
Scikit-Learn05
Pandas06
NumPy07
Timeline

Experience.

March 2026 to Present01

iOS Developer Intern

Infosys

  • •Led development of the Maintenance Module for a Fleet Management System using Swift, handling service scheduling, defect tracking, and history management for 100+ vehicles.
  • •Collaborated in a 10-member Agile team using Jira, completing 40+ user stories across sprints and reducing manual maintenance tracking effort by 30–35%.
May 2025 to Present02

Student Developer

Apple Student Developer Program (Apple • Infosys • SRMIST)

  • •Selected out of 2,000+ applicants for the prestigious Apple Student Developer Program, powered by Apple in collaboration with Infosys at SRMIST.
  • •Developing 2+ production-grade iOS applications using Swift and UIKit, rigorously aligned with Apple Human Interface Guidelines.
Oct 2024 to Jun 202503

Flutter App Developer

Team Envision — Aarush Techfest (SRM IST)

  • •Built an event registration app in Flutter adopted by 1,000+ attendees; integrated REST APIs for schedule sync and real-time notifications.
  • •Mentored 3 juniors on modular UI design and GetX patterns; improved code reuse and reduced review cycles.
  • •Deployed 5 production-ready builds following full SDLC; resolved 10+ pre-event issues to ensure 100% uptime.
Background

About & Honors.

Education

SRM Institute of Science and Technology, Chennai

Aug 2023 – Present

B.Tech in Computer Science (Big Data Specialization) · CGPA 9.01/10

Key Coursework
Data StructuresAlgorithmsDBMSArtificial IntelligenceInternet TechnologyOperating SystemSystem DesignSoftware Engineering
Honors & Programs

Apple Student Developer Program (Selected out of 2,000+ applicants)

Apple · Infosys · SRMIST

iOS Developer Intern — Fleet Management System

Infosys

B.Tech Big Data Specialization — CGPA 9.01/10

SRM Institute of Science and Technology

Aarush Techfest Event App Adoption by 1,000+ Attendees

Team Envision

LeetCode Problem Solving Profile: DEV009x

LeetCode
Get In Touch

Let's engineer something extraordinary.

Open to product engineering, distributed backend systems, and full-stack software development roles.

Send an Email↗
+91 7980258687•Kolkata & Chennai, India