Frontend
AngularTypeScriptJavaScriptHTML5CSS3NgRxRxJSAngular SignalsTailwind CSSNG-Zorro
Aruljothy Sundaramoorthy
Senior Software Engineer | Solution Architect
Node.js | NestJS | Angular | AWS | Kafka | Distributed Systems
8+ Years in Software Delivery
I design and build cloud-native enterprise applications, scalable APIs, event-driven platforms, and real-time data systems.
Bangalore, India
About
Engineering with purpose
Senior Software Engineer with 8+ years in software delivery, including 7+ years of hands-on software engineering building cloud-native SaaS platforms, real-time data ingestion systems, and enterprise web applications. Strong expertise in Node.js, NestJS, Angular, AWS, Kafka, distributed systems, Go, PostgreSQL, MongoDB, Redis, and Kubernetes. 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.
Focus areas
- 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.
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
- 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
- Architected a real-time device data ingestion platform using Go, Kafka, PostgreSQL, and OpenSearch; improved system reliability by 30%.
- Architected and deployed a production Solar Analytics AI/NLP Assistant for natural-language KPI and plant-performance queries using Node.js, NLP.js, PostgreSQL, and MongoDB. Implemented intent classification, entity extraction, controlled multi-step query mapping, and database-grounded responses.
- 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
- 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.
Real-Time Device Data Platform
Professional ProjectGoKafkaPostgreSQLOpenSearch
- Problem
- Continuous telemetry had to be collected and processed reliably from approximately 3,000 live solar devices.
- My role
- Platform Engineer responsible for ingestion and distributed backend design.
- Architecture decisions
- Go-based polling and processing services, Kafka for event-driven communication, PostgreSQL for structured data and OpenSearch for operational search and analysis.
- Scale or outcome
- Supported approximately 3,000 live devices and improved real-time system reliability by 30%.
Learning Management System Platform
Independent Architecture ProjectAngularGoNestJSPostgreSQLAWS S3CloudFrontHLSDocker
- Problem
- The platform required structured student enrolment, courses, quizzes, certificates, administrative verification and secure video delivery.
- My role
- Solution Architect.
- Architecture decisions
- Separate student and administrative workflows, modular course and enrolment domains, PostgreSQL data modelling, and secure video delivery using AWS S3, CloudFront and HLS.
- Scale or outcome
- Created the application, API, database and deployment architecture required for implementation.
QR-Based Ordering SaaS Platform
Personal ProductAngularNestJSMongoDBAWS S3CloudFrontElastic BeanstalkCodePipeline
- Problem
- Restaurants, cafés, tea shops, cloud kitchens and small retailers needed a mobile-friendly QR ordering workflow without requiring customers to install an application.
- My role
- Architect and Full-Stack Engineer.
- Architecture decisions
- Multi-tenant architecture using Angular, NestJS and MongoDB, QR-based shop identification, administrative product management, and AWS S3 and CloudFront for media delivery.
- Scale or outcome
- Built an end-to-end personal SaaS product covering shop configuration, digital menus, ordering and administration.
Enterprise RAG Knowledge Retrieval Pipeline
Learning / Architecture ProjectNestJSNode.jsPostgreSQLpgvectorAWS S3RedisDockerLLMEmbeddings
- Problem
- Internal documents needed to be transformed into searchable knowledge with traceable, context-grounded answers.
- My role
- AI Platform / Backend Engineer.
- Architecture decisions
- NestJS and Node.js services, PostgreSQL with pgvector, document ingestion, chunking, metadata preservation, embedding generation, hybrid retrieval and source-aware answer generation.
- Scale or outcome
- Implemented an end-to-end reference architecture and working learning project for document ingestion and retrieval.
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 Software Engineering
Solution Architecture
Cloud-Native Application Development
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.
8+
Years in Software Delivery
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
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 PaperInternational 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
Connect
Connect
Feel free to connect for professional networking, technical discussions, architecture conversations, or relevant career opportunities.