Hiring guide for ColdFusion Engineers

ColdFusion Developer Hiring Guide

ColdFusion is a proprietary rapid application development platform, created by Jeremy and JJ Allaire in 1995. It was originally designed to make it easier to connect simple HTML pages to a database, marking it as one of the earliest scripting languages. The software was later acquired by Macromedia, which in turn was acquired by Adobe Systems Inc in 2005. Today, ColdFusion is used for building rich internet applications and is distinguished by its associated scripting language, CFML. Information sourced from Adobe Systems official website and historical records.

Ask the right questions secure the right ColdFusion talent among an increasingly shrinking pool of talent.

First 20 minutes

General ColdFusion app knowledge and experience

The first 20 minutes of the interview should seek to understand the candidate's general background in ColdFusion application development, including their experience with various programming languages, databases, and their approach to designing scalable and maintainable systems.

How would you define ColdFusion?
ColdFusion is a rapid web application development platform created by J.J. Allaire in 1995. It is designed to be expressive and powerful, with an easy-to-use scripting language that harnesses the power of Java but hides its complexity.
What are the key features of ColdFusion?
ColdFusion has several key features including its integrated development environment, automatic session management, user authentication, and data validation. It also supports web services, XML, and integrates well with HTML.
Describe the difference between ColdFusion components and regular ColdFusion templates.
ColdFusion components (CFCs) are reusable blocks of code that can be invoked from anywhere in the application, while regular ColdFusion templates are individual pages that are not reusable. CFCs are more modular and promote code reuse.
How would you handle errors in ColdFusion?
ColdFusion provides several ways to handle errors, including the cftry and cfcatch tags, which allow you to catch and handle exceptions. You can also use the cferror tag to specify a template to display when an error occurs.
What are ColdFusion scopes?
Scopes in ColdFusion are predefined storage areas that persist data for different durations. Some examples are the application scope, session scope, and request scope.
The hiring guide has been successfully sent to your email address.
Oops! Something went wrong while submitting the form.

What you’re looking for early on

Does the candidate have a strong understanding of ColdFusion?
Can they demonstrate problem-solving skills?
Do they have experience with other relevant technologies such as SQL, JavaScript, or HTML?
Have they shown good communication skills during the interview?

Next 20 minutes

Specific ColdFusion development questions

The next 20 minutes of the interview should focus on the candidate's expertise with specific backend frameworks, their understanding of RESTful APIs, and their experience in handling data storage and retrieval efficiently.

Describe the difference between struct and array in ColdFusion.
An array in ColdFusion is an ordered list of elements, while a struct is an unordered collection of key-value pairs. Arrays are accessed by numeric index, while structs are accessed by key.
How would you implement caching in ColdFusion?
ColdFusion provides several ways to implement caching, including the cfcache tag, which can cache page content, and the cachePut and cacheGet functions, which can cache data.
What are ColdFusion custom tags?
ColdFusion custom tags are user-defined tags that encapsulate commonly used functionality. They can be used just like built-in tags and can accept attributes and content.
Describe the difference between implicit and explicit variable scoping in ColdFusion.
Implicit scoping in ColdFusion refers to when you use a variable without specifying its scope, in which case ColdFusion searches the scopes in a default order to find the variable. Explicit scoping is when you specify the scope when you use the variable.
How would you secure a ColdFusion application?
Securing a ColdFusion application involves several steps, including validating user input, using secure protocols, encrypting sensitive data, managing sessions securely, and keeping the server and application updated.
The hiring guide has been successfully sent to your email address.
Oops! Something went wrong while submitting the form.

The ideal back-end app developer

What you’re looking to see on the ColdFusion engineer at this point.

At this point, a skilled ColdFusion engineer should demonstrate strong problem-solving abilities, proficiency in ColdFusion programming language, and knowledge of software development methodologies. Red flags include lack of hands-on experience, inability to articulate complex concepts, or unfamiliarity with standard coding practices.

Digging deeper

Code questions

These will help you see the candidate's real-world development capabilities with ColdFusion.

What does this simple ColdFusion code do?

This code sets a variable named 'myVar' with the string 'Hello, World!' and then outputs the value of 'myVar' to the screen.
What will be the output of the following ColdFusion code?


The output will be 'Greater'. The 'GT' operator in ColdFusion is a comparison operator that checks if the value on its left is greater than the value on its right.
What does this ColdFusion code do?

This code creates a new one-dimensional array, appends the string 'ColdFusion' to it, and then outputs the first element of the array, which is 'ColdFusion'.
What does the following ColdFusion code do?


Thread joined
This code creates a new thread named 'myThread' that sleeps for 5 seconds. Then it waits for 'myThread' to complete execution and outputs 'Thread joined'.

Wrap-up questions

Final candidate for ColdFusion Developer role questions

The final few questions should evaluate the candidate's teamwork, communication, and problem-solving skills. Additionally, assess their knowledge of microservices architecture, serverless computing, and how they handle ColdFusion application deployments. Inquire about their experience in handling system failures and their approach to debugging and troubleshooting.

What are ColdFusion ORM events?
ColdFusion ORM events are hooks that allow you to execute code when certain events occur in the ORM lifecycle, such as before an entity is saved, after it is loaded, or before it is deleted.
Describe the difference between cfquery and cfstoredproc in ColdFusion.
The cfquery tag in ColdFusion is used to execute SQL queries directly, while the cfstoredproc tag is used to execute stored procedures in a database. Stored procedures can be more efficient and secure than direct queries.
How would you optimize a ColdFusion application?
Optimizing a ColdFusion application can involve several strategies, including optimizing database queries, using caching, minimizing session data, using efficient algorithms and data structures, and minimizing network traffic.

ColdFusion application related

Product Perfect's ColdFusion development capabilities

Beyond hiring for your ColdFusion engineering team, you may be in the market for additional help. Product Perfect provides seasoned expertise in ColdFusion projects, and can engage in multiple capacities.