2+
Years Experience
Hi, I'm
Full Stack Developer @ CSIR India
Adrin T Paul.
I build systems that operate at scale.
Full-stack developer with 2+ years of experience building scalable backend-heavy products with Next.js, Node.js, PostgreSQL, and Spring Boot microservices.
Backend EngineerNode.js + JavaOpen to Full-time
3
Production Projects
50%
Backend Performance Gain
Experience
Roles focused on scale, quality, and delivery
Jan 2024 - Present
Full Stack Developer
CSIR India
Improved backend performance by 35%
Developing an internal IP Filing Portal with Next.js, React.js, Node.js, Express.js, and PostgreSQL with stronger authentication and session handling.
Outcome Snapshot
- - Improved backend response performance by 35% through query and API optimization.
- - Strengthened platform reliability with secure authentication and session controls.
- - Delivered modular services for long-term maintainability and faster feature rollout.
Next.jsReact.jsNode.jsExpress.jsPostgreSQL
May 2023 - Jun 2023
Web Development Intern
CodeClause
Delivered responsive full-stack web modules
Built responsive web applications using HTML, CSS, JavaScript, Node.js, Express.js, and MongoDB with EJS-based conditional rendering.
Outcome Snapshot
- - Delivered multiple responsive full-stack modules during a short internship window.
- - Improved development speed using reusable EJS templates and modular route structure.
- - Implemented reliable form flows and validation across key user interactions.
HTMLCSSJavaScriptNode.jsExpress.jsMongoDB
Aug 2021 - Mar 2022
Assistant Executive (CS)
Electronic Arts (EA)
Improved issue resolution efficiency by 15%
Supported operational workflows, collaborated with QA and engineering teams on live issue debugging, and gained exposure to large-scale service reliability.
Outcome Snapshot
- - Improved issue resolution efficiency by 15% through structured triage workflows.
- - Accelerated cross-team debugging with clearer QA-engineering coordination.
- - Built strong operational reliability habits in live production support.
OperationsLive SupportQA CollaborationReliability
Feb 2025 - Jun 2025
Google Cybersecurity Specialization
Protect networks, devices, people, and data from unauthorized access and cyberattacks using Security Information and Event Management (SIEM) tools.
Hands-on virtual experience focused on practical scenarios and role-based problem solving.
Outcome Snapshot
- - Understand the importance of cybersecurity practices and their impact for organizations.
- - Identify common risks, threats, and vulnerabilities, as well as techniques to mitigate them.
- - Protect networks, devices, people, and data from unauthorized access and cyberattacks using Security Information and Event Management (SIEM) tools.
- - Gain hands-on experience with Python, Linux, and SQL.
Bash (Scripting Language)Computer Security Incident ManagementCyber Threat IntelligenceCyber AttacksCybersecurityDebuggingHardeningIncident ResponseInterviewing SkillsIntrusion Detection and PreventionLinuxNetwork Protoclos
Jan 2026 - Jan 2026
Cybersecurity Analyst Job Simulation
Tata
Virtual ExperienceCrafted custom IAM Solutions
Hands-on virtual experience focused on practical scenarios and role-based problem solving.
Outcome Snapshot
- - Identity and access management (IAM) fundamentals
- - IAM strategy assessment
- - Crafting custom IAM solutions
- - Platform integration
CommunicationCritical ThinkingIdentity Management AssessmentIdentity Management DesignProblem SolvingProject PlanningSolution Architecture
Jan 2026 - Jan 2026
Cyber Job Simulation
Deloitte
Virtual ExperienceCyber security
Hands-on virtual experience focused on practical scenarios and role-based problem solving.
Outcome Snapshot
- - Completed Deloitte Australia's Cyber on Forage. In the simulation
- - Supported a client in a cyber security breach
- - Answered questions to identify suspicious user activity
Computer NetworkingData AnalysisData ModellingData StructuresData Visualization ToolsFormal CommunicationLOG ANALYSISWEB SECURITY
Projects
Featured work with measurable outcomes
Showing 3 projects
Featured Walkthrough - LinkedUp
Walkthrough loads when this section is in view.
Project Highlight
2025 - Present
0 key outcomes
LinkedIn-Style Professional Social Media Platform
BackendSystem DesignSecurityFrontend
Designed fan-out feed architecture, HLS video streaming pipeline and redis based caching for faster data retrieval
LinkedUp is a production-grade LinkedIn-style platform built with a Node.js gateway, Spring Boot microservices, PostgreSQL, Redis, and object storage for scalable social interactions and media delivery.
Build Summary
Built a professional social platform with posts, nested comments, profiles, media uploads, and timeline generation. Implemented JWT-layered authentication between Express and Spring Boot microservices.
Outcome Snapshot
- - Reduced high-read feed pressure with Redis cache-aside strategy.
- - Enabled adaptive playback using HLS chunked streaming and FFmpeg processing.
- - Strengthened service boundaries with secure internal JWT-based communication.
Problem
Feed-heavy social workloads and media delivery can overload monolithic backends and degrade response times under read spikes.
Approach
Split critical capabilities into Node.js gateway + Spring Boot services, added Redis cache-aside for feed reads, and built an HLS pipeline with FFmpeg for adaptive media playback.
Impact
Designed fan-out feed architecture, HLS video streaming pipeline and redis based caching for faster data retrieval Reduced high-read feed pressure with Redis cache-aside strategy.
Architecture Snapshot
Preview of the current deployment flow. Expand for full layer details.
Frontend
Next.js
Gateway
Node.js + Express
Microservices
Java Spring Boot
Database
PostgreSQL
Cache
Redis
Storage
Krutrim Object Storage
UI Libraries
Material UI, Joy UI and Tailwind CSS
Core Highlights
- - Scalable feed generation with Redis cache-aside
- - Secure internal JWT authentication between services
- - PostgreSQL full-text search with GIN indexes
- - HLS video streaming pipeline and sprite generation using FFmpeg
- - Distributed Redis Lua token-bucket rate limiting
- - Nested comments, likes, and optimistic UI updates
Engineering Learnings
- - Distributed system design
- - Microservice authentication patterns
- - Redis caching and invalidation strategies
- - Media streaming optimization
- - Database performance tuning
Next Improvements
- - Real-time notifications
- - WebSocket integration
- - Feed fan-out optimization
- - Message delivery improvements
Next.jsNode.jsExpress.jsPostgreSQLJava Spring BootMicroservicesFFmpeg
Internal Filing Dashboard
2024 - Present
Management System (Internal) - CSIR India
0 key outcomes
BackendSystem DesignSecurityQuick Scan: 2024 - Present | 5 tools | 3 outcomes
Problem
Internal IP filing workflows were slowed by fragmented validation paths and inconsistent tracking visibility.
Approach
Built modular backend services with structured upload validation, stronger session handling, and query optimization for stable status retrieval.
Impact
Enabled secure uploads, validations, and filing status tracking Stabilized filing workflows with secure uploads and validation gates.
Additional Outcomes
- - Improved query consistency for smoother status tracking under real usage.
- - Delivered maintainable service modules for internal team scalability.
Next.jsNode.jsExpressPostgreSQL
Map + Listing View
2023
YelpCamp Web App
0 key outcomes
BackendFrontendQuick Scan: 2023 | 5 tools | 3 outcomes
Problem
A listing platform needed reliable CRUD flows, media handling, and map-based discovery without fragile routing complexity.
Approach
Implemented structured Express routes, integrated Cloudinary uploads, and combined MongoDB with Mapbox for geolocation-driven browsing.
Impact
Built full CRUD workflows with geolocation and cloud media support Shipped complete CRUD flows with map-driven discovery experience.
Additional Outcomes
- - Integrated media upload pipeline for user-generated campsite content.
- - Applied scalable routing and middleware patterns for feature growth.
Node.jsExpressMongoDBCloudinary
More Builds Available
Explore more projects on my GitHub
I regularly ship experiments, backend systems, and full-stack builds beyond these featured highlights.
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Public Repos
...
Followers
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Total Stars
Now Building
What I am actively shipping and sharpening
In Progress
Product Systems
LinkedUp Realtime Layer
Extending LinkedUp with real-time product flows while preserving stable performance at scale.
Current Focus
- - Notification events over persistent WebSocket channels.
- - Feed fan-out tuning with cache invalidation safeguards.
- - Message delivery reliability improvements for async workflows.
Node.jsSpring BootRedisPostgreSQLWebSockets
Shipping Iterations
Portfolio Platform
Portfolio Intelligence Upgrades
Improving discovery and assistant relevance with better retrieval quality and section-aware context.
Current Focus
- - Higher-quality intent matching for project and experience queries.
- - Context expansion for sections like off-code and now-building updates.
- - Cleaner response grounding to reduce ambiguous assistant replies.
Next.jsDeepSeek APIPromptingContext Ranking
Active Practice
Cybersecurity Practice
Security Labs and Detection Playbooks
Building stronger blue-team instincts through practical IAM and SIEM-focused scenarios.
Current Focus
- - Hands-on incident triage and suspicious-activity investigation drills.
- - IAM assessment patterns translated into implementation checklists.
- - Ongoing practice with Python, Linux, SQL, and log-analysis workflows.
SIEMIAMLinuxPythonSQLThreat Detection
Engineering Blogs
Deep dives into distributed systems, security hardening, and production architecture decisions from building LinkedUp.
Node.jsRedisSystem Design
Designing Production-Grade Distributed Rate Limiting with Redis Lua in a Linkedin Style Social Media Platform's Backend
How I designed and implemented a production-grade distributed token bucket rate limiter using Redis Lua to protect authentication, messaging, and feed endpoints in my LinkedUp social platform.
Feb 25, 2026Read
Node.jsSpring BootMicroservices
Layering Session Authentication with Internal JWT for Secure Microservice Communication
How I layered internal JWT authentication on top of Passport session-based auth to securely connect a Node.js monolith with Spring Boot microservices in my LinkedUp architecture.
Feb 25, 2026Read
Node.jsHLSFFmpeg
Hardening HLS Video Streaming in Node.js: From Express Delivery to CDN-Ready Architecture
How I built HLS video streaming using FFmpeg in my LinkedUp platform, identified abuse risks in Express-based delivery, and designed a scalable path toward CDN-backed media architecture.
Feb 25, 2026Read
Technical Skills
Tools and technologies from my current stack
Programming
85%
Core language fluency for full-stack product development.
JavaJavaScriptPython (Basics)HTMLCSS
Frameworks & Backend
91%
API-first architecture, services, and scalable application layers.
Spring BootREST APIsMicroservicesNode.jsExpress.jsReact.jsNext.js
Databases & Tools
88%
Data modeling, query performance, and practical delivery tooling.
PostgreSQLMongoDBGitGitHubDocker (Basics)PostmanSplunk
Performance & UI
82%
User-centric performance tuning and frontend optimization habits.
Tailwind CSSMaterial UIBootstrapCore Web VitalsLighthouseLazy LoadingCode SplittingMemoization
AI Workflows
79%
Practical AI integration and assisted development workflows.
Prompt EngineeringLLM IntegrationOpenAI APIsDeepSeek APIsRAG BasicsAI-assisted Debugging
Education & Certifications
Academic and professional credentials
Education
Noida Institute of Engineering and Technology
Bachelor of Technology in Mechanical Engineering, CGPA: 7.3/10.0
2017 - 2021
AcSIR (Academy of Scientific and Innovative Research)
Postgraduate Diploma in Precision Measurements and Quality Control, CGPA: 7.1/10.0
2023 - 2024
Certifications
Web Developer Bootcamp (Udemy, Jan 2023)
Google Cybersecurity Specialization (Coursera, Jun 2025)
General Course on Intellectual Property (WIPO, Apr 2024)
Contact
Let's build something that performs at scale
Open to full-time roles and high-impact freelance projects in backend engineering, full-stack systems, and architecture-focused product work.
adrinpaul29@gmail.comDownload ResumeWhen I'm Not Coding
Gaming is where I reset
cmd.exe - gaming-favorites
$games.exe --favorites
Ranked list
- 01.Red Dead Redemption 2
- 02.Far Cry 6
- 03.GTA V
- 04.Assassin's Creed Unity
- 05.Assassin's Creed Origins
- 06.Assassin's Creed Valhalla
- 07.Assassin's Creed Black Flag
- 08.Cyberpunk 2077
- 09.Valorant
- 10.CSGO
- 11.Assassin's Creed 1
- 12.Assassin's Creed 2
- 13.Assassin's Creed 3
- 14.Call of Duty WWII
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