Cloud-Native Engineer

Aruljothy Sundaramoorthy

S. Aruljothy

Senior Full-Stack / Cloud-Native Engineer

Angular | NestJS | Go | AWS | Kafka | Kubernetes | 7+ Years

I build scalable cloud-native applications, real-time data platforms, microservices, and production-ready enterprise web systems.

Bangalore, India

SA

Aruljothy Sundaramoorthy

Senior Full-Stack / Cloud-Native Engineer

Architecting scalable cloud-native systems, real-time platforms, and enterprise-grade delivery.

7+

Years Experience

Cloud-Native

Systems

Real-Time

Platforms

Core Stack

AngularNestJSGoAWSKafkaKubernetes
About Me

Engineering with purpose

Building reliable systems that scale from prototype to production.

Senior Software Engineer with 7+ years of experience building cloud-native SaaS platforms, real-time data ingestion systems, and enterprise web applications. Strong expertise in Angular, NestJS, Go, Kafka, PostgreSQL, MongoDB, Redis, Kubernetes, and AWS. Experienced in designing scalable microservices, implementing CI/CD pipelines, optimizing cloud infrastructure, leveraging AI-assisted development workflows, and building NLP-driven conversational data-retrieval tools.

Aruljothy Sundaramoorthy is a Senior Full-Stack / Cloud-Native Engineer based in Bangalore, India, working across Angular, NestJS, Go, AWS, Kafka, Kubernetes, and enterprise cloud-native systems.

Core Focus

  • Cloud-native product engineering
  • Microservices and event-driven architecture
  • Real-time data ingestion
  • AWS modernization
  • CI/CD and Kubernetes deployments
  • AI-assisted development using MCP and Cursor AI
  • Team mentoring and delivery ownership
Skills

Technical expertise

A comprehensive toolkit for building modern, cloud-native enterprise systems.

Frontend

AngularTypeScriptJavaScriptHTML5CSS3NgRxRxJSAngular SignalsTailwind CSS

Backend

NestJSExpress.jsNode.jsGoLang

Databases

MongoDBPostgreSQLMySQLSQL ServerRedis

Architecture

MicroservicesEvent-Driven ArchitectureClean ArchitectureMulti-Tenant SaaSREST APIsAuthenticationJWTMonolith to Microservices Modernization

Cloud AWS

LambdaAPI GatewayS3CloudFrontRoute53DynamoDBCognitoCloudWatchEventBridgeVPCIAMRDS

DevOps & CI/CD

DockerKubernetesJenkinsBitbucket PipelinesAWS CodePipelineCodeBuildCodeDeployGit

Messaging & Real-Time

Apache KafkaRedis StreamsSocket.ioWebSocket

AI & Automation

Model Context ProtocolMongoDB MCPPostgreSQL MCPCursor AINLP.jsIntent ClassificationDatabase Schema ExplorationRead-Only MCP Workflows

Monitoring

OpenSearchElasticSearchCloudWatchCloudTrailAWS X-Ray

Testing & Tools

PostmanSwaggerJIRAConfluenceAgile ScrumKanban
Experience

Work history

Building enterprise platforms and cloud-native systems across industries.

Senior Software Developer – Cloud IaaS

Hitachi Digital Services

Bangalore

Aug 2024 – Present
  • Lead development of AWS-based cloud infrastructure and application modernization projects using Lambda, API Gateway, CloudFront, Cognito, RDS, and VPC.
  • Designed and implemented scalable multi-tenant microservices with focus on performance, security, cost optimization, and maintainability.
  • Built CI/CD pipelines using Docker, Kubernetes, AWS CodePipeline, CodeBuild, and CodeDeploy.
  • Configured MongoDB and PostgreSQL MCP servers for AI-assisted schema exploration, secure read-only database analysis, and faster debugging workflows.
  • Collaborated with cross-functional teams on cloud-native architecture decisions including API design, authentication, deployment strategy, and observability.

Senior Software Developer

Smart Grid Analytics Pvt. Ltd. / Armax Automation

Bangalore

Apr 2019 – Sep 2024
  • Architected a real-time device data ingestion platform using Go, Kafka, PostgreSQL, and OpenSearch; improved system reliability by 30%.
  • Built SCADA application modules for IoT telemetry using Angular, NestJS, Kafka, and PostgreSQL; improved monitoring accuracy by 35%.
  • Developed a Computerized Maintenance Management System with Angular, NestJS, PostgreSQL, Redis, and Kafka on Kubernetes; reduced manual maintenance overhead by 25%.
  • Contributed to multi-tenant job portal and safety compliance platforms hosted on AWS with scalable microservices architecture.
  • Integrated observability stack and automated CI/CD pipelines, reducing deployment effort by 40%.
  • Mentored junior developers and coordinated cross-functional teams.

Quality Analyst

IGlobal Test Labs Pvt Ltd

Pondicherry

May 2018 – Apr 2019
  • Performed functional, regression, and performance testing for enterprise web applications.
  • Designed and automated test cases for critical workflows.
  • Reported quality metrics and supported defect-free releases.
Case Studies

Featured Case Studies

Selected engineering work across cloud-native platforms, real-time systems, enterprise applications, and architecture-focused delivery.

Learning Management System Platform

Solution Architect
AngularGoNestJSPostgreSQLAWS S3CloudFrontHLSDocker

A scalable learning management platform designed for student enrollment, video-based courses, quizzes, certificates, admin verification, and secure content delivery. The platform includes separate student and admin portals, structured course workflows, quiz completion tracking, and secure video streaming using cloud delivery architecture.

Highlights

  • Architected student and admin portal workflows
  • Designed course, section, quiz, certificate, and enrollment modules
  • Implemented secure video delivery architecture using AWS S3 and CloudFront
  • Planned HLS-based video streaming for protected learning content
  • Designed scalable PostgreSQL schema for courses, users, quizzes, and payments
  • Created API architecture for student progress and admin verification
  • Supported dev, QA, and production environment planning

Real-Time Device Data Platform

Platform Engineer
GoKafkaPostgreSQLOpenSearch

A high-throughput industrial telemetry platform that ingests real-time device data, processes events, stores history, and enables monitoring through scalable backend services.

Highlights

  • Class-based polling strategy
  • Real-time ingestion pipeline
  • High-throughput telemetry processing
  • Improved system reliability by 30%

SCADA Application

AngularNestJSKafkaPostgreSQL

A real-time industrial monitoring system for IoT telemetry, device status, and operational dashboards.

Highlights

  • Real-time IoT dashboards
  • Telemetry accuracy improvement
  • API-driven monitoring workflows
  • Event-based backend communication

Maintenance Management System

AngularNestJSPostgreSQLKafkaRedisKubernetes

A computerized maintenance management system built to automate SLA workflows, maintenance tasks, asset tracking, and operational processes.

Highlights

  • SLA workflow automation
  • Event-driven microservices
  • Kubernetes deployment
  • Reduced manual maintenance overhead by 25%

QR-Based Ordering SaaS Platform

Lead Full-Stack Engineer
AngularNestJSMongoDBAWS S3CloudFrontElastic BeanstalkCodePipeline

A multi-tenant QR-based ordering platform designed for restaurants, cafés, tea shops, cloud kitchens, and small retail shops. The platform allows customers to scan a QR code, browse digital menus, place orders, and enables shop admins to manage categories, products, orders, media, and shop configurations.

Highlights

  • Multi-tenant SaaS architecture
  • QR-based customer ordering flow
  • Admin dashboard for shop, category, and product management
  • CDN-based image delivery using AWS CloudFront
  • Order management workflow
  • Mobile-first customer application
  • Cloud deployment using AWS services

Multi-Tenant Job Portal SaaS

NestJSAngularMongoDBRedisAWS Route53CloudFrontS3ACM

A scalable multi-tenant job portal platform with optimized APIs, Redis caching, and AWS-hosted frontend/backend infrastructure.

Highlights

  • Multi-tenant SaaS architecture
  • Redis caching optimization
  • API performance improvements
  • Reduced database load by around 40%

Safety Compliance Platform

AngularNestJSMongoDBAWS S3CloudFront

An enterprise compliance platform with dynamic audit forms, dashboards, workflows, and reporting for large user groups.

Highlights

  • Dynamic audit forms
  • Compliance dashboards
  • Workflow automation
  • Supported 500+ users

Visitor Audit Management System

Full-Stack Engineer
AngularNestJSPostgreSQLREST APIs

A lightweight visitor audit and tracking system designed for company-level visitor entry management, audit visibility, and operational record keeping. The system helps capture visitor details, maintain visit history, track purpose of visit, and support internal audit requirements through a structured web-based workflow.

Highlights

  • Visitor entry and exit record management
  • Purpose-of-visit and host tracking workflow
  • Searchable visitor history for audit reference
  • Role-based access for admin and operational users
  • Dashboard-ready data structure for visit reports
  • Web-based workflow replacing manual registers

AI-Powered Conversational Query Skill

Node.jsNLP.jsREST APIs

A custom NLP-based conversational query system that interprets natural-language user questions, identifies intent/entities, routes requests to backend APIs, and returns real-time business data.

Highlights

  • Intent classification
  • Entity recognition
  • Dynamic API routing
  • Reusable conversational data-retrieval skill
Capabilities

Engineering Capabilities

Core engineering areas across product development, cloud-native systems, and production-grade platform delivery.

Full-Stack Product Engineering

End-to-end product engineering across frontend, backend APIs, and production delivery workflows.

Cloud-Native Architecture

Scalable, resilient architecture design for cloud environments and enterprise workloads.

Enterprise Angular Applications

Structured, maintainable Angular applications for complex enterprise user experiences.

API & Backend Engineering

Secure REST APIs with authentication, caching, and performance-focused backend design.

Microservices Design

Decoupled, event-driven microservices with clear domain boundaries and reliable communication.

Real-Time Platform Engineering

High-throughput ingestion pipelines and streaming platforms for telemetry and event-driven systems.

AWS Application Modernization

Migration, deployment, and modernization on AWS with security, cost, and performance in focus.

CI/CD & Release Automation

Automated build, test, and deployment pipelines that improve release confidence and velocity.

System Design & Technical Leadership

Architecture planning, technical direction, and hands-on leadership for complex engineering initiatives.

Focus

Professional Focus Areas

Primary engineering domains across full-stack delivery, cloud-native platforms, and enterprise systems.

Senior Full-Stack Engineering

Cloud-Native Application Development

Solution Architecture

AWS Modernization

Microservices & API Design

Real-Time Data Platforms

Enterprise Application Development

DevOps & CI/CD Enablement

Strengths

What I do best

Production-focused engineering across frontend, backend, cloud, and real-time systems.

  • Build enterprise Angular applications
  • Design scalable NestJS / Go backend systems
  • Architect microservices and event-driven platforms
  • Deploy production systems on AWS
  • Build real-time data pipelines using Kafka and Redis
  • Improve performance, reliability, and cloud cost
Impact

Key achievements

Measurable impact across reliability, delivery, and user scale.

7+

Years Experience

30%

Reliability Improvement in Real-Time Systems

40%

Deployment Effort Reduction

35%

Monitoring Accuracy Improvement

25%

Manual Workflow Reduction

500+

Enterprise Users Supported

Education

Academic foundation

Computer science and engineering background.

Bachelor of Technology – Computer Science & Engineering

Pondicherry Engineering College

Pondicherry

Apr 2018
Technical Articles

Latest Article

Beginner-friendly explanations of AI concepts, without implementation noise.

Artificial Intelligence

From Vectors to Similarity: Understanding Cosine Similarity

A beginner-friendly explanation of how cosine similarity compares embedding vectors, why direction matters, and how related text is identified mathematically.

Read article
Research

Publications

Research work and academic contributions in secure communication and network security.

Efficient Rekeying System for Secure Multicast with Differing Membership Period Portable Client

Research Paper

International Journal of Advanced Scientific Research & Development (IJASRD)

Volume 02, Issue 01 · Jan – Mar 2015 · pp. 159 – 167

Authors: S. Aruljothy, A. Arvind, B. Sudharsanan, K. Vignesh Babu

A research paper focused on Group Key Management for secure multicast communication, proposing an efficient rekeying approach to reduce communication overhead in dynamic group membership environments.

Secure MulticastGroup Key ManagementRekeyingNetwork SecurityMobile Communication

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Engineering systems that scale.

A professional portfolio of cloud-native applications, real-time platforms, enterprise systems, research work, and architecture-focused engineering contributions.