Mandatory Skills and responsibilities for AWS Cloud Engineer — Fresher Level

Core AWS Services 

A fresher should have a strong understanding of these core AWS services:

Category	AWS Service	What You Should Know
🖥️ Compute	EC2	Launching servers, SSH, AMI, instance types, EBS
📦 Storage	S3	Buckets, objects, versioning, policies, lifecycle
🌐 Networking	VPC	Subnets, Internet Gateway, NAT Gateway, Route Tables, Security Groups
🔐 Security	IAM	Users, groups, roles, policies, MFA, least privilege
🗄️ Database	RDS	MySQL/PostgreSQL, backups, Multi-AZ, security
⚡ Serverless	Lambda	Functions, triggers, execution roles, basic Python
⚖️ Load Balancing	ELB / ALB	Traffic routing, target groups, health checks
📊 Monitoring	CloudWatch	Metrics, logs, alarms, monitoring
🌍 DNS	Route 53	DNS records, hosted zones, domain routing
🚀 CDN	CloudFront	CDN basics, caching, HTTPS, content delivery

📌 Interviewers commonly ask scenario-based questions, such as:

“How would you make a web application highly available?”

“How would you secure an EC2 server?”

“What happens when an EC2 instance becomes unhealthy?”

Linux + Networking Fundamentals — Must Know

AWS Cloud Engineers frequently work with Linux servers, so Linux and networking basics are essential.

🐧 Linux

You should know:

• SSH
• File and directory management
• Users and groups
• File permissions (chmod, chown)
• Processes and services
• Package installation
• Disk and memory checking
• Basic shell commands
• Basic Bash scripting

🌐 Networking

You should understand:

• IP addresses
• Public vs Private IP
• Subnetting
• DNS
• TCP/IP
• HTTP/HTTPS
• Ports
• NAT
• Routing
• Load Balancers
• Security Groups
• Network ACLs

📌 Important: Don't just memorize networking terms. Understand how traffic moves from a user's browser to an AWS application.

Hands-on Practical Skills 

Recruiters generally value practical AWS experience, not only theoretical knowledge.

A fresher should be able to complete projects such as:

🌐 Deploy a Website

• Host a static website using S3
• Launch an EC2 web server
• Install Apache/Nginx
• Connect EC2 → RDS
• Configure Route 53
• Understand SSL/HTTPS using ACM

🔐 Secure AWS Infrastructure

• Create IAM users and roles
• Attach IAM policies
• Use IAM roles with EC2
• Configure Security Groups
• Follow the Least Privilege Principle
• Never expose AWS access keys unnecessarily

🏗️ Build a Basic AWS Architecture

For example:

User → Route 53 → Load Balancer → EC2 → RDS

You should be able to explain what each component does and why it is used.

Git + CI/CD + DevOps Basics

Modern cloud jobs often combine AWS + DevOps skills.

🔧 Git & GitHub skills

Learn:

• git clone
• git add
• git commit
• git push
• git pull
• Branches
• Merge
• Pull Requests

🚀 CI/CD Basics

Understand:

• What CI/CD means
• Build → Test → Deploy process
• Automated deployment
• GitHub Actions
• AWS CodePipeline
• Jenkins basics

🐳 Docker

Learn:

• What is a container?
• Docker image vs container
• Dockerfile
• Build an image
• Run a container
• Push an image to a registry

📌 For a fresher, basic Docker knowledge is usually enough initially.

Infrastructure as Code -

You should understand how to create AWS infrastructure using code instead of manually creating everything in the AWS Console.

Learn at least one:

• Terraform 
• AWS CloudFormation

You should understand:

• What is Infrastructure as Code (IaC)?
• Create a VPC using code
• Create EC2 using code
• Create Security Groups
• Variables
• Outputs
• Basic Terraform commands

For example:

Terraform → VPC → Subnet → EC2 → Security Group

Programming / Scripting 

You don't need to become a software developer, but one scripting language is important.

🐍 Python — Recommended

Learn:

• Variables
• Conditions
• Loops
• Functions
• Lists and dictionaries
• Reading files
• Basic exception handling
• Using APIs

AWS Automation-

You should be able to:

• Run AWS CLI commands
• Automate simple AWS tasks
• Write a basic Lambda function
• Use Python with AWS services

📌 Python + AWS CLI + Lambda is a very useful combination for a fresher.

AWS Security — Must Know

Security is one of the most important areas in cloud engineering.

Understand:

• IAM Users
• IAM Roles
• IAM Policies
• MFA
• Least Privilege
• Security Groups
• Network ACLs
• Encryption basics
• S3 bucket permissions
• Secrets and credentials
• AWS KMS basics

⚠️ Never hard-code AWS access keys in GitHub repositories.

Monitoring + Troubleshooting — Must Know

A Cloud Engineer should know how to identify and troubleshoot basic problems.

📊 CloudWatch

Learn:

• Metrics
• Logs
• Alarms
• CPU utilization
• Application logs
• Basic dashboards

🔍 Troubleshooting Examples

You should know how to investigate:

• EC2 server is unreachable
• Website is not opening
• Port is blocked
• Application is running but not accessible
• EC2 cannot connect to RDS
• IAM user does not have permission
• High CPU usage
• S3 access denied

Cloud Architecture Basics

At fresher level, you should understand how AWS services work together.

For example:

             Users
                ↓
           Route 53
                ↓
          CloudFront
                ↓
        Load Balancer
                ↓
        ┌───────┴───────┐
       EC2             EC2
        └───────┬───────┘
                ↓
               RDS

You should be able to explain:

• Why use a Load Balancer?
• Why use multiple EC2 instances?
• Why use RDS instead of installing a database manually?
• Why use private subnets?
• Why use CloudFront?
• How to make an application highly available?

Soft Skills + Interview Skills

Technical knowledge alone is not enough.

Develop these skills:

• Explain technical concepts in simple English
• Read and understand architecture diagrams
• Explain “Why did you choose this AWS service?”
• Troubleshoot problems step-by-step
• Communicate security concerns
• Explain your projects clearly
• Understand basic cost optimization

Most Important Fresher Skill Set

If you want to prepare for an AWS Cloud Engineer Fresher interview, prioritize these:

AWS Core Services → Linux → Networking → IAM/Security → Git → Docker → Python → Terraform → CI/CD → Troubleshooting

Ideal Fresher Project

Build one complete project rather than many small projects:

Route 53 → Load Balancer → EC2 → RDS

Then add:

IAM + Security Groups + CloudWatch + GitHub + Docker + Terraform

If you can build it, troubleshoot it, and explain why each AWS service is used, you'll have a much stronger fresher-level AWS profile.