CodeX Academy

Technical Competency Library

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Project maintained by CodeX Academy

CodeX Academy

Level Overview

Front-End Developer 1

Utilize various development tools and technologies to build and deploy simple public websites using basic HTML, CSS and JavaScript.

Skills:

• Utilize development environments and editors to organize files and write code.
• Utilize built-in browser developer tools to understand and visualize web applications.
• Navigate file systems and perform common commands in the Windows or Linux command line.
• Maintain a Git repository up-to-date with frequent commits.
• Create simple web layouts with the most common HTML tags.
• Apply basic styling to existing web layouts with the most common CSS selectors and styles.
• Write simple but functional JavaScript code to manipulate the DOM and respond to changes.
• Connect and deploy web projects in Git to deploy to Heroku.

Front-End Developer 2

Utilize various development tools and technologies to build and automatically deploy dynamic and responsive web applications using HTML, CSS/SASS, JavaScript, JQuery and external REST APIs.

Skills:

• Utilize built-in browser developer tools to debug and troubleshoot code or layout issues in web applications.
• Build interactive experiences and fully-responsive, complex layouts in HTML.
• Utilize CSS preprocessors to write more flexible and maintainable CSS.
• Extend JavaScript code with existing libraries of functions and abstractions.
• Request, receive, process and display structured data from external servers using JavaScript.
• Resolve version conflicts between commits and team members using Git and merge tools.
• Configure a project to automatically deploy to a public web server upon every commit to Git.
• Test and inspect REST APIs using Postman.
• Utilize pre-built CSS structures in Bootstrap to build stylish web applications.

Front-End Developer 3

Build and deploy responsive data-driven web applications using ReactJS, SASS, JavaScript and other modern tools.

Skills:

• Write maintainable JavaScript code to solve complex problems.
• Integrate pre-built functionality from various libraries found in NPM.
• Create reusable functions and variables in SASS.
• Transpile cutting edge JavaScript code to legacy versions for browser compatibility using Babel.
• Automate the packaging of entire web applications using default Webpack configurations.
• Integrate advanced HTML and CSS structures and components into existing web applications using Bootstrap.
• Build modern component-based web applications with 2-way input binding using ReactJS.
• Write isolated and repeatable unit tests for JavaScript code.
• Utilize functional JavaScript libraries to extend applications and reduce maintenance liabilities.
• Implement secure sections of a web application using Google SSO and Firebase Authentication.
• Build web applications with CRUD data functionality using the firebase SDK.

Full-Stack Developer 4

Build custom backend-driven web applications using HTML, CSS, TypeScript and NodeJS.

Skills:

• Write and maintain statically-typed JavaScript code using TypeScript.
• Add, remove and maintain Node-based project dependencies using NPM.
• Configure Babel transpilation using presets and plugins.
• Write and execute JavaScript for the server or local machine using NodeJS.
• Write and execute queries that create, read, update and delete data in a relational database using SQL.
• Integrate database operations in a NodeJS application.
• Write fully isolated unit tests for complex code that has dependencies.
• Prepare web applications for production with advanced bundling techniques using Webpack.
• Build custom REST-based APIs and back-end servers using ExpressJS.
• Build complex and maintainable front-end web application with modern Flux architecture using React and Redux.

Full-Stack Developer 5

Build and deploy database-driven web applications using ReactJS and NodeJS.

Skills:

• Write maintainable object-oriented code using TypeScript.
• Build complex, maintainable and trustworthy API back-end using ExpressJS, advanced routing and validation.
• Utilize 3rd party web services, APIs and SDKs to perform valuable actions like mail sending.
• Follow “red-geeen-refactor” to write isolated unit tests with mocks and fakes that drive trustworthy and maintainable code.
• Manage and query data in a relational database with complex joining, grouping and aggregates using SQL.
• Develop back-end code that interfaces with the database for complex query scenarios without writing SQL using Object Relational Mappers.
• Deploy static front-end web applications for public consumption to AWS S3.
• Write executable shell scripts to automate file system processes using Bash.
• Build continuous integration pipelines that automatically compile code, run tests and packages deliverables on every push.
• Implement HTTP Basic Authentication in the back-end.
• Write code that adheres to the Single Responsibility Principle.

Full-Stack Developer 6

Build and deploy complex, maintainable, database-driven web applications using React, NodeJS and other modern tools.

Skills:

• Write advanced object-oriented TypeScript with generics and reflection.
• Follow “red-geeen-refactor” to write entire suites of isolated unit tests with mocks and fakes that drive trustworthy, maintainable code with high test coverage.
• Defend against common vulnerabilities such as Injection, Broken Authentication and Sensitive Data Exposure.
• Build secure front-end and back-end applications using oAuth.
• Write code that adheres to the Open/Closed Principle.
• Work productively as part of a team that applies principles and practices of Scrum.
• Build maintainable applications with low coupling and appropriate separation of concerns in order to be compatible with a domain-driven architecture.
• Write and maintain docker containers.
• Build continuous deployment pipelines that continue after CI to automatically deploy web applications and migrate databases on every push to appropriate branches.
• Deploy back-end servers to AWS Elastic Beanstalk that connect to relational databases in AWS RDS.
• Integrate NoSQL databases in NodeJS back-ends to query and modify data.
• Integrate GraphQL in front-end web applications to query and display data.
• Write simple console/command-line applications with basic functionality using .NET and C#.

Full-Stack Engineer 7

Masterfully design and build complex full-stack applications using software engineering principles and best practices.

Skills:

• Write .NET applications using features of C# such as extension methods, generic types, advanced built-in and custom types, and advanced execution flow control.
• Write isolated unit tests with distinct arrange, act and assert stages that drive implementation code in C#.
• Defend against common vulnerabilities such as XML External Entities (XXE), Broken Access Control and Security Misconfiguration.
• Design and implement a business domain in code using multiple bounded contexts and inter-context communication in order to be compatible with a domain-driven architecture.
• Create and deploy cloud functions to AWS Lambda for short-lived, distributed functionality.
• Manage and Interact with AWS services such as EC2, SNS and SQS.
• Containerize and provision applications using Docker Compose.
• Implement the Adapter Pattern in code for appropriate situations.
• Write code that adheres to the the Liskov Substitution Principle.
• Implement GraphQL in the backend to respond to client queries.
• Integrate NoSQL database in an .NET back-end application.
• Secure front-end applications using oAuth and OIDC.
• Process client payments in front-end and back-end applications using Stripe.
• Enable a team to work collaboratively and productively in a context that applies principles and practices of Scrum.
• Build REST APIs using ASP.NET.

Full-Stack Engineer 8

Masterfully architect robust and complex applications that scale and provide value.

Skills:

• Build REST APIs with advanced routing and custom middleware in ASP.NET.
• Build .NET applications that integrate reusable functionality from various 3rd party libraries.
• Integrate ORMs in .NET applications to communicate with databases without direct SQL queries.
• Secure both front-end and back-end systems using oAuth and OIDC.
• Write code that adheres to the the Interface Segregation Principle.
• Implement the Strategy Pattern in code for appropriate situations.
• Recognize signs of and write code that defends against common issues such as memory leaks, infinite loops and n+1.
• Defend against common vulnerabilities such as Cross-Site Scripting (XSS).
• Utilize and configure AWS services such as VPC, ECR, API Gateway and ECS.
• Design and implement back-ends with Hexagonal Architecture.
• Build systems that take advantage of the segregation of commands and queries.
• Write clear feedback for other developers about code smells found when reviewing their code.
• Lead an agile team to work productively in a context that applies principles and practices of Scrum.

Full-Stack Engineer 9

Lead a team of developers as they build valuable full-stack applications using modern technologies, software engineering principles and best practices.

Skills:

• Build .NET applications that integrate reusable functionality from various advanced 3rd party libraries.
• Write code that adheres to the the Dependency Inversion Principle.
• Solve problems using reactive programming techniques and tools.
• Recognize signs of and write code that defends against common issues such as deadlocks, data races and race conditions.
• Write defensive code by using secure deserialization, avoiding components with known vulnerabilities implementing sufficient logging and monitoring.
• Design and develop solutions using the pub sub architectural paradigm.
• Build systems that take advantage of the segregation of commands and queries, domain events and event sourcing.
• Contribute in valuable ways to product backlog grooming meetings.
• Engage other developers in productive pair programming.