Available for opportunities

Hariharan
J

Designing and managing cloud infrastructure — AWS deployments, VPC networking, cloud security, and DNS management on GoDaddy, Hostinger & Cloudflare. Currently pursuing MCA at Madras University.

View Projects → Contact Me

AWS Certifications

Projects Built

AWS Services Used

Year Experience

Career

Experience

Building real-world cloud systems and infrastructure professionally.

Lentera Technologies Pvt. Ltd.

Junior Cloud Engineer

2025 — Present

Managing AWS cloud infrastructure, web hosting environments, and DNS operations for client deployments — ensuring uptime, security, and cost-efficiency across production systems.

Managing and optimizing AWS cloud infrastructure for production environments including EC2, S3, RDS, and CloudFront
Managing web hosting via cPanel and hPanel across Hostinger, GoDaddy, and Cloudflare platforms
Configuring DNS records (A, CNAME, MX, TXT), SSL certificates, and domain routing across multiple registrars
Setting up Cloudflare WAF, CDN, and DDoS protection rules for client websites
Monitoring cloud resource usage and implementing cost optimization strategies to reduce AWS spend
Performing cloud security activities including IAM policy reviews, CloudWatch alerting, and access control audits
Collaborating on infrastructure planning for new client onboarding and migrations

AWSCloudflareGoDaddy HostingercPanelhPanel DNS ManagementIAMCloudWatch SSL/TLSLinux

Codec Technologies

Cloud Computing Intern

Nov 2025 · Virtual

Gained hands-on experience with cloud computing fundamentals, AWS services, and cloud deployment practices during a structured virtual internship programme.

AWSCloud ComputingEC2S3

Work

Projects

Cloud infrastructure deployments and systems built on AWS and related technologies.

☁️

Static Website Hosting on AWS S3 + CloudFront

Deployed a high-performance static portfolio site on Amazon S3, accelerated globally via CloudFront CDN with HTTPS enforcement and custom cache policies.

Hosted static site via S3 static website endpoint with versioning
Integrated CloudFront as CDN for low-latency global content delivery
Configured HTTPS-only access with OAC (Origin Access Control)
Configured IAM user with least-privilege S3 permissions
Set up custom cache-control headers and invalidation policies

AWS S3CloudFrontIAMHTTPSCDN

🏗️

3-Tier Web App on AWS

Highly available 3-tier architecture achieving 99.9% uptime using EC2, ALB, and RDS across two Availability Zones with full network isolation between tiers.

Custom VPC with public/private subnets across 2 AZs
Application Load Balancer for traffic distribution and health checks
Amazon RDS (MySQL) database tier with read replicas for performance
Security groups & route tables for inter-tier isolation
Auto Scaling group on EC2 instances for demand-based scaling

EC2VPCALBRDSAuto Scaling

🗳️

Digital E-Voting System

Full-stack electronic voting platform built with Java, Oracle, and JSP. Streamlines elections with transparency, role-based access, and accurate result computation.

Role-based access control separating admin and voter privileges
Oracle database backend for secure, tamper-proof ballot storage
Real-time result computation with full audit trail
Session management and vote integrity validation logic
Responsive UI built with JSP and JSTL for cross-browser compatibility

JavaOracle DBJSPAccess ControlAudit Trail

Expertise

Technical Skills

Cloud infrastructure, networking, security, and systems administration expertise.

🟠

AWS Core Services

10 services

EC2

IAM

RDS

CloudFront

Elastic Beanstalk

Route 53

CodeCommit

ALB

SES

🔐

AWS Security & Monitoring

4 services

IAM

CloudWatch

CloudTrail

GuardDuty

🌐

Cloud Networking

6 components

VPC

Subnets

Route Tables

Internet Gateway

NAT Gateway

Security Groups

🌍

Domain, DNS & Hosting

3 platforms

GoDaddy

Hostinger

Cloudflare

🛠️

Systems & DevOps Tools

4 tools

Linux

Git

GitHub

WinSCP

Credentials

Certifications

Validated cloud expertise through Amazon Web Services programmes.

🏅

AWS Certified Cloud Practitioner

Amazon Web Services

🎓

AWS re/Start Graduate

Amazon Web Services

☁️

AWS Educate — Cloud 101

AWS Educate Programme

Background

About Me

Hariharan J

Junior Cloud Engineer · AWS Certified Cloud Practitioner

BCA graduate from Kumbakonam, currently pursuing MCA at the University of Madras. Working as a Junior Cloud Engineer at Lentera Technologies, managing cloud infrastructure, cloud networking, and DNS operations across GoDaddy, Hostinger, and Cloudflare.

AWS Certified Cloud Practitioner and re/Start graduate, with hands-on experience in AWS services, Linux administration, cloud security, and infrastructure management. Passionate about building reliable, scalable, and cost-effective cloud solutions.

Education

🎓

Master of Computer Applications (MCA)

University of Madras — Chennai, Tamil Nadu

🟢 Currently Pursuing

📘

Bachelor of Computer Applications (BCA)

Sastra University, SRC Campus — Kumbakonam, Tamil Nadu

CGPA: 7.58 / 10 Graduated 2025