Coding Test

Hi Abdel!

Software engineering is at the heart of what we do here at giffgaff. Our agile engineering teams build and support a wide variety of applications and services. These combine to create our unique user experience on the giffgaff website, enable a whole range of awesome features via modern APIs and, additionally, enable our internal teams to work in the most productive and efficient ways.

The quality and maintainability of our software is very important to us, so we are looking for engineers with real-world experience of building and running contemporary software, especially in terms of the whole development lifecycle. You will help us to design and implement tightly focussed APIs, user interfaces, services that internalise our core business logic or internal tools and, together with your team, you will support them in production. We want you to share your opinions on how we are doing things - and help us get better!

Have you got what it takes?

Basic Expectations

• Love delivering a wow to our members
• Ability to communicate clearly
• Be curious & creative
• Have excellent attention to detail
• Have an interest in technology, mobile and wider popular culture trends
• Able to work under pressure and manage workloads effectively
• Organised, self motivated and accountable for own workload
• A strong team player

Key Attributes & Behaviours

Community & Connectedness

A person with community & connectedness skills has a sense of being part of a larger whole, a desire to contribute, a sense that the other people (i.e. coworkers, users, members) are not simply characters in his or her own movie, but fully-realised individuals.

• Coach & Mentor
• Courageous & Honest
• Code with Empathy
• Open Source Approach

Leadership

A person with leadership skills knows how to develop and follow a sense of purpose, in themselves and in others. They are willing to point out, own, and fix things that are broken about our company and in their own career tracks.

• An Owner’s Mindset
• Good at Persuasion
• A Sense of Purpose
• Do the Next Right-Thing

Technical Capability

A person with high technical capability is technically curious, tackles problems without giving up, and produces solutions that less-experienced folks can use, maintain, and learn from.

• Creative & Curious
• Disciplined & Rigorous
• Fearless & Pragmatic
• Good at Problem Solving
• A Propensity to Ship

Core Engineering Skills

Must Have	Reading & Writing Code
	Variables & Control Structures
	Debugging & Troubleshooting
	IDE & OS Basics
Should Have	Test Driven Development
	Pair Programming
	Clean Code & Refactoring
	Version Control
Could Have	Continuous Integration & Deployment
	Algorithms & Data Structures
	Dependency Injection
	Mocks & Stubs
	Alerting & Monitoring
	Functional & Non-Functional Testing
Would Like	SOLID Principles
	Containerisation & Networking Basics
	Twelve Factor App Design
	Solution Architecture

Our Technology Stack

Client-Side	CSS3
	ECMAScript (ES6+)
	HTML5
	Jest
	React
	React Native
	SASS
	TypeScript
Server-Side	Java 8 with Maven
	JUnit
	Node JS
	PHP & Laravel
	Python
	Spring Framework
Additional	Apache & NGINX
	AWS
	Jenkins
	DynamoDB, PostgreSQL, Redis & Oracle
	Docker & Kubernetes
	ElasticSearch & Kibana
	Grafana & Prometheus
	Kinesis

The Challenge

We would like you to complete the following coding exercise - we anticipate this taking you no more than 45 minutes. You can use any programming language you like. Ideally your solution will include unit tests, preferably written using a test-driven development approach. The code related to your solution should be placed in a subfolder and be easy to execute - ideally clone → install → run.

Please commit your code back to this repository frequently. We expect you to complete this exercise within a day, but if takes a little longer don't worry - just let us know when you're done.

NOTE: Due to 2FA if you're using HTTPS to access this repo, you must create a personal access token to use as a password when authenticating to GitHub on the command line using HTTPS URLs.

Good Luck!

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Exercise #1 (45 minutes)

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Text Sharing

Create a web application that lets users share a snippet of text, similar to http://pastie.org. The program you write should follow these specifications:

• The user should enter the text into a text area and save the text.
• The text should be stored in a data store.
• The program should generate a URL that can be used to retrieve the saved text.
• When a user follows that URL, the text should be displayed, along with an invitation to edit the text.
• When a user clicks the Edit button, the text should be copied and placed in the same interface used to create new text snippets.

Constraint

• Use something other than a primary key for the URL, such as a slug that you generate. Investigate SHA or MD5 hashing.

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Generated for abdelelbouhy on Thu Aug 20 2020 at 15:02:29 GMT+0100 (British Summer Time)

tech stack

• React
• redux
• saga
• styled components
• jest
• react testing library
• express

install and run

yarn start or npm run start