FaaS
FaaS (Function as a Service) is a modern way companies run their software in the cloud without managing servers. Think of it like renting a chef who only shows up to cook when needed, instead of having a full-time chef in your kitchen. Companies only pay when their code runs, making it cost-effective. It's also called "serverless computing," though servers still exist - they're just managed by cloud providers like Amazon (AWS Lambda), Microsoft (Azure Functions), or Google (Cloud Functions). This approach helps companies save money and time since they don't need to maintain their own servers.
Examples in Resumes
Developed cost-efficient solutions using FaaS and Serverless architecture
Migrated legacy applications to Function as a Service platform, reducing operational costs by 40%
Led implementation of FaaS solutions on AWS Lambda for event-driven processing
Typical job title: "Cloud Engineers"
Also try searching for:
Where to Find Cloud Engineers
Online Communities
Job Boards
Professional Networks
Example Interview Questions
Senior Level Questions
Q: How would you decide when to use FaaS versus traditional server infrastructure?
Expected Answer: A senior candidate should explain cost considerations, scalability needs, and business use cases. They should mention how FaaS works best for sporadic workloads and can save money, but might not be ideal for constant, long-running processes.
Q: How do you handle monitoring and debugging in a FaaS environment?
Expected Answer: The answer should cover cloud monitoring tools, logging strategies, and how to track costs and performance across multiple functions. They should explain how debugging differs from traditional applications.
Mid Level Questions
Q: What are the main challenges when moving an application to FaaS?
Expected Answer: Should discuss practical aspects like function timeout limits, cold starts, and how to break down larger applications into smaller functions. Should mention cost monitoring and performance considerations.
Q: How do you manage security in a FaaS environment?
Expected Answer: Should explain basic security concepts like access controls, managing secrets, and understanding the shared responsibility model with cloud providers.
Junior Level Questions
Q: What is FaaS and how is it different from traditional hosting?
Expected Answer: Should be able to explain that FaaS runs code only when needed, without managing servers, and describe basic differences in pricing and management compared to regular servers.
Q: What are the main benefits of using FaaS?
Expected Answer: Should mention automatic scaling, pay-per-use pricing, and reduced maintenance overhead. Basic understanding of when FaaS might be a good choice for a project.
Experience Level Indicators
Junior (0-2 years)
- Basic understanding of cloud platforms
- Simple function deployment
- Basic monitoring and logging
- Understanding of serverless concepts
Mid (2-5 years)
- Complex function orchestration
- Cost optimization
- Integration with other cloud services
- Error handling and reliability patterns
Senior (5+ years)
- Architecture design for serverless systems
- Performance optimization
- Security best practices
- Cross-platform serverless solutions
Red Flags to Watch For
- No experience with any major cloud provider
- Lack of understanding about pay-per-use pricing
- No knowledge of basic security concepts
- Unable to explain when FaaS is appropriate versus traditional servers
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