As cloud computing continues transforming the technology landscape, Amazon Web Services (AWS) has emerged as a leading provider of cloud infrastructure services. The demand for skilled AWS developers is rising, and companies are looking for qualified candidates who can build, deploy, and manage applications on the AWS platform.
FullStack has a wide range of developers available to join your team. Still, if you want to recruit directly, we've made this comprehensive hiring guide to help you navigate the AWS developer hiring process. This guide covers all the essential elements of hiring a top-notch AWS developer, from conversational and technical interview questions to a job posting template and coding challenge. Whether you're an employer looking to hire or a job seeker looking to prepare for an interview, this guide is designed to help you succeed.
{{tech-qa-header="/hiring-docs/aws"}}
1. How would you configure an EC2 instance to automatically start a specific script on boot?
Answer:
#!/bin/bash
yum update -y
yum install -y httpd
systemctl start httpd
systemctl enable httpd
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2. How would you upload a file to an S3 bucket using the AWS SDK for Python (Boto3)?
Answer:
import boto3
s3 = boto3.client('s3')
with open("example.txt", "rb") as f:
s3.upload_fileobj(f, "my-bucket", "example.txt")
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3. How would you create a Lambda function that responds to an S3 bucket upload event?
Answer:
import boto3
def lambda_handler(event, context):
s3 = boto3.client('s3')
for record in event['Records']:
bucket_name = record['s3']['bucket']['name']
object_key = record['s3']['object']['key']
response = s3.get_object(Bucket=bucket_name, Key=object_key)
# process the object data here
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4. How would you create an Auto Scaling group that scales based on CPU utilization?
Answer:
Resources:
MyAutoScalingGroup:
Type: AWS::AutoScaling::AutoScalingGroup
Properties:
LaunchConfigurationName: !Ref MyLaunchConfiguration
MinSize: 1
MaxSize: 10
DesiredCapacity: 2
AvailabilityZones:
- us-east-1a
- us-east-1b
MetricsCollection:
- Granularity: '1Minute'
Metrics:
- GroupName: AWS/EC2
MetricName: CPUUtilization
TargetGroupARNs:
- !Ref MyTargetGroup
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5. How would you configure an ELB to terminate SSL/TLS connections and forward unencrypted traffic to EC2 instances?
Answer:
aws elbv2 create-listener \
--load-balancer-arn <load_balancer_arn> \
--protocol HTTPS \
--port 443 \
--certificates CertificateArn=<ssl_certificate_arn> \
--default-actions Type=forward,TargetGroupArn=<target_group_arn>
{{job-qa-header="/hiring-docs/aws"}}
Introduction
Creating an excellent job posting template is crucial for attracting the right candidates to your organization. In this guide, we will provide tips and examples for creating an effective AWS developer job posting template to help you find your team's best talent.
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Job Title
The job title is the first thing that candidates will see, so it's essential to make it clear and specific. Use a title that accurately reflects the position and highlights the critical skills and experience required for the role.
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<span class="guide_indent-text">Example:</span>
<ul><li>AWS Developer</li><li>Senior AWS Developer</li><li>AWS Solutions Architect</li></ul>
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Job Description
The job description should provide an overview of the position and the responsibilities involved. It should also highlight the required skills, experience, and qualifications. Use clear and concise language and avoid jargon or overly technical terms that candidates may not understand.
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<span class="guide_indent-text">Example:</span>
<ul><li>Develop and maintain AWS cloud-based applications and services</li><li>Collaborate with cross-functional teams to design, develop, and implement solutions</li><li>Create and maintain documentation, including design specifications, test plans, and user guides</li><li>Troubleshoot and resolve issues related to AWS infrastructure and services</li></ul>
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Key Responsibilities
The key responsibilities section should provide a detailed list of the tasks and duties that the candidate will be expected to perform. Be specific and highlight the critical tasks that are essential to the role.
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<span class="guide_indent-text">Example:</span>
<ul><li>Design, develop, and deploy AWS cloud-based applications and services</li><li>Collaborate with cross-functional teams to develop and implement solutions that meet business requirements</li><li>Monitor and maintain AWS infrastructure and services to ensure optimal performance and availability</li><li>Troubleshoot and resolve issues related to AWS infrastructure and services</li></ul>
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Requirements
The requirements section should outline the required skills, experience, and qualifications needed to perform the job. Be specific and list the must-have requirements that the candidate must meet.
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<span class="guide_indent-text">Example:</span>
<ul><li>Bachelor's degree in Computer Science, Information Technology, or related field</li><li>Minimum of 3 years of experience in developing and deploying AWS cloud-based applications and services</li><li>Strong programming skills in Python, Java, or other relevant languages</li><li>Experience with AWS services such as EC2, S3, Lambda, and CloudFormation</li></ul>
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Preferred Qualifications
The preferred qualifications section should outline additional skills, experience, or qualifications that would be beneficial for the role.
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<span class="guide_indent-text">Example:</span>
- AWS certification such as AWS Certified Solutions Architect or AWS Certified Developer
- Experience with DevOps tools and methodologies such as Jenkins, Git, and Docker
- Experience with serverless computing using AWS Lambda or similar services
- Strong problem-solving and analytical skills
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Benefits
The benefits section should provide information about the benefits package that the company offers. It can include health insurance, retirement plans, paid time off, or any other benefits. This section can help attract potential candidates who are looking for a comprehensive benefits package.
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<span class="guide_indent-text">Example:</span>
<ul><li>Competitive salary and comprehensive benefits package, including health, dental, and vision insurance</li><li>401k retirement plan with matching contributions</li><li>Generous paid time off and flexible work hours</li><li>Opportunities for professional development and career advancement</li></ul>
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How to Apply
The how to apply section should provide clear instructions on how candidates can apply for the position. Include information on the application process, such as submitting a resume and cover letter, and the application deadline.
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<span class="guide_indent-text">Example:</span>
<ul><li>To apply, please submit your resume and cover letter to [email address] by [deadline date]</li><li>We thank all candidates for their interest, but only those selected for an interview will be contacted.</li></ul>
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Conclusion
Creating an effective job posting template is essential for attracting the right candidates to your organization. Use the tips and examples in this guide to create a clear, concise, and compelling job posting that will help you find the best AWS developers for your team.
{{challenge-qa-header="/hiring-docs/aws"}}
Challenge Instructions:
Write a Lambda function that processes CSV files from an S3 bucket and saves the processed data to a DynamoDB table. The function should be triggered whenever a new file is uploaded to the S3 bucket. The CSV files contain the following columns: Name, Age, Email, and Phone. The function should validate the data and only save it to the DynamoDB table if it meets the following criteria:
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- Name must be a string and not empty
- Age must be a number between 18 and 100
- Email must be a valid email address
- Phone must be a string in the format XXX-XXX-XXXX
Answer:
import csv
import json
import boto3
import re
s3_client = boto3.client('s3')
dynamodb = boto3.resource('dynamodb')
table = dynamodb.Table('my-table')
def lambda_handler(event, context):
for record in event['Records']:
bucket = record['s3']['bucket']['name']
key = record['s3']['object']['key']
try:
obj = s3_client.get_object(Bucket=bucket, Key=key)
body = obj['Body']
csv_string = body.read().decode('utf-8')
reader = csv.DictReader(csv_string.split('\n'), delimiter=',')
for row in reader:
if not is_valid(row):
continue
table.put_item(Item=row)
except Exception as e:
print(e)
continue
def is_valid(row):
name = row.get('Name', '').strip()
age = row.get('Age', '').strip()
email = row.get('Email', '').strip()
phone = row.get('Phone', '').strip()
if not name:
return False
if not re.match('^[0-9]{1,3}$', age):
return False
age = int(age)
if age < 18 or age > 100:
return False
if not re.match(r"[^@]+@[^@]+\.[^@]+", email):
return False
if not re.match(r"^\d{3}-\d{3}-\d{4}$", phone):
return False
return True
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As the demand for cloud computing services continues to grow, the need for skilled AWS developers will only increase. Hiring the right candidate for an AWS developer role is crucial for building a successful cloud infrastructure team. We hope this guide has given you the resources you need to hire or land your dream job as an AWS developer. Using the interview questions, job posting template, and coding challenge provided in this guide, you can feel confident that you're making informed decisions about your next hire or career move. Good luck on your journey to becoming an AWS expert!
