Senior developer skill test and interview questions

Choice questions

assessing knowledge of JavaScript, React, JS

Code gaps

assessing knowledge of JavaScript, React

Programming task - Level: Hard

JavaScript | React, React Hooks, Redux, Redux-Toolkit | Simple website builder - Implement an initial version of a WYSIWYG editor that enables users to build a simple website just by picking HTML tags from the widget and filling all the attributes they need.

Choice questions

assessing knowledge of Apex, Salesforce

Code gaps

assessing knowledge of Apex, Salesforce

Programming task - Level: Hard

Salesforce | Apex | Library application - Create an application allowing library to manage books, their borrowings and prepare some

reports about books which were not returned on time. Your current task is to finish implementation of missing service

methods.

Choice questions

assessing knowledge of Anonymity, Blockchain, Decentralization

Code gaps

assessing knowledge of Blockchain, Web3

Programming task - Level: Hard

Blockchain | Solidity | Price Calculator - Implement price calculator for incoming manufactory product data with time reset functionality.

Choice questions

assessing knowledge of Apex, Salesforce

Code gaps

assessing knowledge of Apex, Salesforce

Programming task - Level: Hard

Salesforce | Apex | Implement REST API for handling Product Reviews - Implement Http GET and POST REST API requests that let get existing reviews and insert new ones.

Choice questions

assessing knowledge of Anonymity, Blockchain, Decentralization, DLT, Leger

Programming task - Level: Hard

Blockchain | Solidity | Staking - A smart contract with a staking functionality.

Choice questions

assessing knowledge of Python 3.x, Logical thinking, Sequence, Soft Skills

Programming task - Level: Hard

Python | NumPy | Graph Convolutional Networks - Implement a simple Graph Convolution Network.

Choice questions

assessing knowledge of Java, Core Java, I/O system, Lambda Expressions, Exceptions

Code gaps

assessing knowledge of Java, Core Java, I/O system, Lambda Expressions, Network Communication

Programming task - Level: Hard

Java | Library application - Create an application that allows the library to manage books, their borrowings and prepare some reports about books that were not returned on time. Finish implementation of the missing service methods.

Choice questions

assessing knowledge of Swift, iOS

Code gaps

assessing knowledge of Swift, iOS

Programming task - Level: Hard

iOS | Swift | Nerd Airlines App - Build an app that is used to find the cheapest route between two given destinations. Implement a graph traversing mechanism to find the cheapest route by filling out the appropriate methods, implement a generic caching mechanism for the given two easter eggs of the app.

Choice questions

assessing knowledge of CLI, DevOps, SysOps, Terraform, Azure

Code gaps

assessing knowledge of DevOps, Terraform

Programming task - Level: Hard

DevOps | Terraform, Azure | Application Gateway - You've been asked to securely expose an existing resource to the Internet - after some deliberation the team decided to use Azure Application Gateway.

Application Gateway is a web traffic load balancer with some built in Application Firewall capabilities.

Choice questions

assessing knowledge of DevOps, Kubernetes

Code gaps

assessing knowledge of DevOps, Kubernetes, YAML

DevOps task - Level: Hard

DevOps | Kubernetes | CRD and API - Create Custom Resource Definition to interact with Kubernetes API.

Choice questions

assessing knowledge of Logical thinking, Sequence, Soft Skills, CLI, DevOps, SysOps, Terraform, AMI, AWS, EBS, EC2, EIP

Code gaps

assessing knowledge of DevOps, Terraform

Programming task - Level: Hard

DevOps | Terraform, Azure | AKS Json - Use Terraform azurerm provider to create json configuration of AKS cluster.

Choice questions

assessing knowledge of Swift, iOS

Code gaps

assessing knowledge of Swift, iOS, MacOS

Programming task - Level: Hard

iOS | Swift | Nerd Airlines App - Build an app that is used to find the cheapest route between two given destinations. Implement a graph traversing mechanism to find the cheapest route by filling out the appropriate methods, implement a generic caching mechanism for the given two easter eggs of the app.

Choice questions

assessing knowledge of Ruby

Code gaps

assessing knowledge of Ruby

Programming task - Level: Hard

Ruby | Flight manager app | Seats reservation and flights analysis - Implement a solution that manages flights, generates seats, and books them.

Choice questions

assessing knowledge of Logical thinking, SQL

Task - Level: Hard

SQL | PostgreSQL | Hotels - cities and top hotels - Prepare a list of cities with the date of last reservation and a main photo (photos[0]) of the most popular (by number of bookings) hotel in this city.

Choice questions

assessing knowledge of .NET, NUnit, QA

Code gaps

assessing knowledge of NUnit, QA

Programming task - Level: Hard

QA | .NET, NUnit | Email service unit tests - Write tests in class NUnitExercise.Tests/CandidateTests.cs to verify Email Service class

Choice questions

assessing knowledge of .NET, QA, NUnit, Testing, C#, Selenium

Code gaps

assessing knowledge of QA, .NET, NUnit

Programming task - Level: Hard

QA | .NET, NUnit | Business Data Generator Interface - Implement the NUnit tests for the IDataProcessing interface into the NUnitDataProcessing.Tests.DataProcessingTest project that verifies business requirements.

Choice questions

assessing knowledge of Java

Code gaps

assessing knowledge of Java

Programming task - Level: Hard

Java | Precomputation Queue - Implement priority queue which will be used on several nodes to asynchronously precompute statistics about product sets.

Choice questions

assessing knowledge of Ruby

Code gaps

assessing knowledge of Ruby

Programming task - Level: Hard

Ruby | Configuration holder solution for a new startup based on microservices - Implement a Config class to develop a flexible class capable of storing absolutely any config value.

Choice questions

assessing knowledge of Java, Multithreading

Code gaps

assessing knowledge of MongoDB

Programming task - Level: Hard

Java | Circuit Breaker and Retry pattern - Implement circuit breaker, fallback and retry pattern in microservice architecture.

Choice questions

assessing knowledge of Android

Code gaps

assessing knowledge of Android, Java, ProGuard

Programming task - Level: Hard

Android | Java | ProGuard configuration - Implement the ProGuard Configuration to remove developer's code from the code base - at compile time.

Choice questions

assessing knowledge of .NET, C#, Message Patterns, WCF, Web applications & Web Services, Windows Communication Foundation, Metadata

Code gaps

assessing knowledge of HTML, HTML5, CSS

Programming task - Level: Hard

.NET | RSA Decryption WCF Service - Finish implementation of the WCF interface which can decrypt and verify data encrypted using RSA.

Choice questions

assessing knowledge of Android

Code gaps

assessing knowledge of Android, Kotlin

Programming task - Level: Hard

Android | Kotlin, C | JNI Magic - Implement the JNI functionality that enables you to call the Base::getBaseComponent method having a Client instance only.

Choice questions

assessing knowledge of GIT

Code gaps

assessing knowledge of Java

Programming task - Level: Hard

Java | Internet Banking System Decryption Service - Implement methods related to cryptography.

Choice questions

assessing knowledge of GIT

Code gaps

assessing knowledge of C

Programming task - Level: Hard

C | TCP File Server - Implement a simple TCP file transmission protocol - server