Q1. What is the difference between EC2 and Lambda, and when would you use each?
Tests fundamentals — should cover always-on servers vs event-driven, short-lived compute
Get dedicated AWS developers to design, build, and manage scalable, secure cloud applications — from serverless architectures to enterprise-grade infrastructure on Amazon Web Services.
Why choose us?
Every developer passes a 5-stage vetting process.
Your developer works exclusively on your product.
Hourly time tracking with daily reports. No hidden fees.
We replace within 48 hours at no extra cost.
Developers overlap 4-8 hours with your working day.
Flexible contracts with no lock-in and no penalties.
AWS (Amazon Web Services) is the world's most widely adopted cloud platform, powering everything from lean startup MVPs to mission-critical enterprise systems. With over 200 services spanning compute, storage, databases, serverless, and networking, AWS lets businesses build applications that scale on demand without owning physical infrastructure.
At ZonSource, our AWS developers design serverless architectures, build event-driven systems, migrate on-premise workloads to the cloud, and implement cost-efficient, secure infrastructure using Infrastructure as Code.
Current stack: AWS Lambda, EC2, S3, DynamoDB, API Gateway, CloudFormation, Terraform
Every AWS developer on our bench is evaluated against these core competencies.
Practical, hands-on experience provisioning and managing production workloads
Ability to design event-driven systems using Lambda, API Gateway, and Step Functions
Skilled at writing CloudFormation, Terraform, or AWS CDK templates for repeatable environments
Deep understanding of security groups, IAM policies, and least-privilege access
Experience deploying and scaling containerized workloads on AWS
Ability to choose and optimize between relational and NoSQL AWS database services
Knowledge of rightsizing, reserved instances, and identifying wasted cloud spend
Certifications like AWS Solutions Architect or AWS Developer Associate as a signal of verified expertise
A snapshot of AWS developers available now.
Build cloud-native applications designed specifically for AWS infrastructure
Build event-driven, auto-scaling applications using Lambda, API Gateway, and DynamoDB
Migrate on-premise or other cloud workloads to AWS with minimal downtime
Manage infrastructure with CloudFormation, Terraform, or AWS CDK
Automate build, test, and deployment pipelines using CodePipeline or Jenkins
Identify and eliminate unnecessary AWS spend without impacting performance
Implement IAM best practices, encryption, and compliance-ready architectures
Ongoing monitoring, patching, and infrastructure management
ENGAGEMENT MODELS
ZonSource's AWS team redesigned our architecture and our infrastructure costs dropped by a third.
Their serverless migration eliminated our server management overhead entirely.
The AWS engineer they placed with us handled our entire multi-region deployment flawlessly.
Tell us your cloud goals, current infrastructure, and team needs
We match you with 2-3 pre-vetted AWS developers
Interview shortlisted developers, assess skills and culture fit
Developer joins your standups, tools, and workflows
If your organization is already using AWS, needs its market-leading service breadth (Lambda, DynamoDB, SageMaker, and 200+ other services), or wants access to the largest pool of cloud talent and community resources, a dedicated AWS developer is the right fit.
An Azure developer makes more sense if your organization is deeply invested in the Microsoft ecosystem — Active Directory, Office 365, .NET applications — since Azure offers tighter native integration with those tools. Both platforms are mature and enterprise-proven; the decision usually comes down to your existing stack and team familiarity rather than raw capability.
Use these questions when evaluating AWS developers — or let us handle the vetting.
Tests fundamentals — should cover always-on servers vs event-driven, short-lived compute
Look for multi-AZ deployment, load balancing, and auto-scaling knowledge
Should describe scoped policies and avoiding broad permissions like AdministratorAccess
Should weigh access patterns, scalability needs, and schema flexibility
Should mention Infrastructure as Code, change review, and rollback plans
Should reference CloudWatch, X-Ray, and structured log analysis
Look for a phased migration strategy, not a risky all-at-once cutover
Looking for a different skill set? Explore our full bench of pre-vetted developers.