Hiring guide for Ada 2005 Engineers

Ada 2005 Developer Hiring Guide

Ada 2005 is a high-level computer programming language, an updated version of Ada 95, primarily used for large and critical systems. It was developed by the International Organization for Standardization (ISO) and approved in 2007 as ISO/IEC 8652:1995/Amd.1:2007(E). The language features enhanced object-oriented programming capabilities, improved real-time support, and greater flexibility in its predefined environment to ensure robust software development. Its design principles emphasize software reliability, maintainability and efficiency which makes it suitable for embedded systems or mission-critical applications like avionics or defense programs. The evolution of Ada from its inception has been guided by the Ada Resource Association (ARA) with technical direction provided by experts within the U.S Department Of Defense.

Ask the right questions secure the right Ada 2005 talent among an increasingly shrinking pool of talent.

First 20 minutes

General Ada 2005 app knowledge and experience

The first 20 minutes of the interview should seek to understand the candidate's general background in Ada 2005 application development, including their experience with various programming languages, databases, and their approach to designing scalable and maintainable systems.

How would you define the Ada 2005 programming language?
Ada 2005 is a modern programming language designed for large, long-lived applications – and embedded systems in particular – where reliability and efficiency are essential. It was originally developed in the 1980s for the U.S. Department of Defense.
What are the key features of Ada 2005?
Ada 2005 has strong typing, run-time checking, parallel processing, exception handling, and object-oriented programming features. It also has built-in support for real-time and concurrent programming.
Describe the difference between Ada 2005 and other programming languages like C++ or Java.
Ada 2005 is designed for large, long-lived, and real-time systems, with a focus on strong typing, run-time checking, and parallel processing. Unlike C++, Ada 2005 has built-in support for real-time and concurrent programming. Unlike Java, Ada 2005 is not primarily designed for web or mobile applications.
How would you handle exceptions in Ada 2005?
In Ada 2005, exceptions are handled using the keywords 'begin', 'exception', and 'when'. The 'begin' block contains the code that might raise an exception, the 'exception' block contains handlers for exceptions, and the 'when' keyword is used to specify which exceptions a handler can handle.
What are the benefits of strong typing in Ada 2005?
Strong typing in Ada 2005 helps catch errors at compile-time rather than at run-time. This can make it easier to debug and maintain large codebases, and can also help prevent certain types of security vulnerabilities.
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What you’re looking for early on

Does the candidate demonstrate a strong understanding of Ada 2005 syntax and semantics?
How well has the candidate handled problem-solving questions?
Has the candidate displayed knowledge of Ada 2005's unique features, such as its strong typing and package system?
Can the candidate articulate their thought process and problem-solving approach clearly?

Next 20 minutes

Specific Ada 2005 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 a procedure and a function in Ada 2005.
In Ada 2005, a procedure is a subprogram that performs an action, while a function is a subprogram that returns a value. Procedures are called for their side effects, while functions are called for their return values.
How would you implement object-oriented programming in Ada 2005?
In Ada 2005, object-oriented programming is implemented using packages, types, and methods. A package is similar to a class in other languages, a type is similar to an instance of a class, and a method is similar to a method in other languages.
What are the concurrency features of Ada 2005?
Ada 2005 has built-in support for concurrent programming, including tasks, protected objects, and rendezvous for synchronization. These features make it easier to write code that can run on multiple processors at the same time.
Describe the difference between a task and a protected object in Ada 2005.
In Ada 2005, a task is a concurrent unit of execution, while a protected object is a data structure that provides controlled concurrent access. Tasks are used for parallel processing, while protected objects are used for synchronization and communication between tasks.
How would you use generics in Ada 2005?
In Ada 2005, generics are used to write code that can work with different types. A generic is like a template for a package, procedure, or function. It defines a pattern for code, and then specific instances of that code can be created for different types.
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The ideal back-end app developer

What you’re looking to see on the Ada 2005 engineer at this point.

At this point, a skilled Ada 2005 engineer should demonstrate strong problem-solving abilities, proficiency in Ada 2005 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 Ada 2005.

What does this simple Ada code do?
with Ada.Text_IO; use Ada.Text_IO;
procedure Hello is
  Put_Line ("Hello, world!");
end Hello;
This code prints 'Hello, world!' to the standard output.
What will be the output of this Ada code snippet?
with Ada.Text_IO; use Ada.Text_IO;
procedure Display is
  Num : Integer := 10;
  Put_Line (Integer'Image(Num));
end Display;
This code will output '10' to the standard output.
What does this Ada code for array manipulation do?
with Ada.Text_IO; use Ada.Text_IO;
procedure ArrayDemo is
  type Int_Array is array (1 .. 5) of Integer;
  Arr : Int_Array := (1, 2, 3, 4, 5);
  for I in Arr'Range loop
    Put_Line (Integer'Image(Arr(I)));
  end loop;
end ArrayDemo;
This code declares an array of integers and initializes it with values from 1 to 5. It then iterates over the array and prints each element to the standard output.
What does this Ada code related to concurrency do?
with Ada.Text_IO; use Ada.Text_IO;
procedure ConcurrencyDemo is
  task type Worker is
    entry Start;
  end Worker;
  task body Worker is
    accept Start;
    Put_Line ("Worker started");
  end Worker;
  W : Worker;
end ConcurrencyDemo;
This code defines a concurrent task named 'Worker'. 'Start' is an entry point for the task. When 'W.Start' is called in the main procedure, it triggers the 'Worker' task to run concurrently and print 'Worker started' to the standard output.

Wrap-up questions

Final candidate for Ada 2005 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 Ada 2005 application deployments. Inquire about their experience in handling system failures and their approach to debugging and troubleshooting.

What are the real-time features of Ada 2005?
Ada 2005 has built-in support for real-time programming, including real-time tasks, real-time clocks, and real-time systems. These features make it easier to write code that can meet strict timing requirements.
Describe the difference between a real-time task and a regular task in Ada 2005.
In Ada 2005, a real-time task is a task that has a deadline, while a regular task does not. Real-time tasks are used in real-time systems, where tasks must be completed by specific deadlines.
How would you use the Ravenscar profile in Ada 2005?
The Ravenscar profile in Ada 2005 is a subset of the language designed for high-integrity real-time systems. It restricts certain features of the language to make it easier to analyze and predict the behavior of the system. To use the Ravenscar profile, you would specify it in the pragma profile.

Ada 2005 application related

Product Perfect's Ada 2005 development capabilities

Beyond hiring for your Ada 2005 engineering team, you may be in the market for additional help. Product Perfect provides seasoned expertise in Ada 2005 projects, and can engage in multiple capacities.