DET - Junior React - GDSN02

At EY, you’ll have the chance to build a career as unique as you are, with the global scale, support, inclusive culture and technology to become the best version of you. And we’re counting on your unique voice and perspective to help EY become even better, too. Join us and build an exceptional experience for yourself, and a better working world for all. 

Position summary -

Provide leadership and deep technical expertise in all aspects of solution design and application development for specific business environments. Focus on setting technical direction on groups of applications and similar technologies as well as taking responsibility for technically robust solutions encompassing all business, architecture, and technology constraints. Possesses strong technical skills; provides tech knowledge and capabilities and coaches team members. Will not have direct reports but will direct activities of a team for execution of projects. May be responsible for coordinating teams to accomplish development in a matrixed organization. Typically requires 5-7 years of experience

Required skills 
Java Developer:

• Experience working on high volume applications· Experience in server side frameworks like Spring MVC
• Experienced with the Spring Framework, including Spring Boot, Spring Security, Spring Integration, Spring MVC, Spring Data JPA
• Good understanding of SOAP web services and related standards like REST/JSON
• Experience building restful web services
• Working knowledge for front end technologies like handlebars, foundation, and reactJS 
• XML and JSON binding libraries  (jaxb, Jackson, gson, etc)
• Unit Tests – Junit
• Experience with GIT, Maven, Nexus, Eclipse(or equivalent IDE)
• Experience with GIT distributed version control, branching/merge strategies, and Bitbucket
• Experience with monitoring toolset like Splunk, Dynatrace 
• Familiarity with MQ (Websphere MQ or ActiveMQ)Experience in performance tuning with good understanding JVM internals
• Experience with groovy
• Experience in Object-oriented programming and concepts
• Experienced in Distributed System development using Java/J2EE/Web Technologies
• Conversant in Java design patterns

UI Developer:

• Experience with GIT distributed version control, branching/merge strategies, and Bitbucket
• A solid understanding of Front-end design patterns and principals: Responsive Web Design, MVC, BEM, OOCSS, Event Delegation, Modules, Singletons,Prototypes, Mixins, Publish/Subscribe, XHR, Server-side vs client-side, etc.
• A solid understanding of AJAX and how to fetch data from a service endpoint that can be used to render dynamic web content
• A solid understanding of semantic HTML and CSS3 (SASS), including layouts, responsive design, and accessibility (WCAG 2.1)
• Experience with Front End and accessibility tools: Devtools, Web Fiddler, Visual Studio (or preferred IDE), JAWS, Voiceover, Talkback
• Comfortable reviewing a UX wireframe and building corresponding UI efficiently;  Works with UX partners and identifies design risks proactively to deliver applications for high-traffic websites
• Familiarity with performance optimization tools (i.e. lighthouse) and techniquess (image compression, lazy loading, bundling, sprites, etc.)
• Familiarity with Node, NVM and NPM
• Experience with Vanilla JS (ES6) and modern Javascript frameworks and libraries (examples - Vue, React, Polymer, Angular, Handlebars, JQuery, and others). 

Desired Skills

• Bachelor or Master’s Degree in Computer Science or related field
• 5+ years of hands-on software development experience
• Exposure to Agile Methodologies
• Ability to communicate complex technology solutions to diverse teams namely, technical, business and management
• Good interpersonal communication skills for tech and business conversations – ability to work in a collaborative/team environment
• Good analytical skills to break down requirements, solve complex problems
• Provide feedback in code reviews for improvements
• Bring improvement ideas to the team and be capable of driving the execution/implementation

BofA UI Discussion

• Quick introduction
• Javascript Interview question – Not librariries
  • Let and const
  • Promises – wrote a couple of code
  • Ajax – piece of code
  • Ajax headers – piece of code
  • Array – piece of code
  • ES6
  • Array De-structuring
  • Javascript to access elements
  • querySelector and querySelectorAll
  • Event bubbling
  • Web security principles
  • Accessibility
  • Responsive web design
  • Performance optimization
  • Grid layout
  • Media query
• HTML
  • HTML5 latest APIs
  • Symantic Elements
  • How develop an application without any responsive css works, like Bootstrap/Tailwind
  • What is the diff between SASS/CSS
  • What are the break points for multiple screen sizes from Mobile to laptop

BofA Java Discussion

• Spring Lifecyle
• Explain about dispatcher servlet
• Spring Scopes
• How to connect to database in spring and execute query
• What is the advantage of using spring framework?
• How to handle exceptions in Rest service
• Final Keyword
• Singleton
• Why string is immutable
• Java memory
• Spring IOC
• What are all the Http methods and how do you secure the data
• Spring annotations     
• Difference between @Controller and @RestController
• program:
• find non repeating character in a word - jyedefyheja 
• soap vs rest
• rest secirity (how to secure rest application)
• Spring IOC (How to configure beans), bean scope
• Hibernate configuration
• how spring boot works.
• about pom.xml file in maven. How to change the version of the jars
• Exception handling in java
• Final key word in java - variable, method , class
• Interfaces in java - interface method as static - can we declare as static
• Private/interface variable 
• Spring boot questions - MVC/Spring IOC, dependency questions.
• Spring security - talk about implementation done , For authentication Methods we need to configure
• Authentication manager in spring security - why is it used ?
• Spring security filter chain 
• Spring MVC - dispatcher servlet - How does it find your controller,  if Url has to map one controller . 
• Developing a service , consuming across different channels. How do you achieve this 
• Test your service/application in local 
• JVM affinity - apps deployed against 5 JVM , always request to reach particular JVM how do you ensure that 
• Db interactions , TLF
• Http handshakes , authenticate yourself against service provider. 
• Requesting service provider , hitting end point. Legitimate request

Java program asked to execute  

• Aditya Verma: Find the length of the longest substring without repeating characters.
  • Sample 1:
  • Input - String a = "xdfrxabc"
  • Output - 4 
• Reasoning - "xdfr" is the substring before x repeats
  • Sample 2:
  • Input - String b = "aaaaa"
  • Output - 1
• Reasoning - "a" is substring before repeatation
  • Sample 3:
  • Input - String c = "qcvvopit"
  • Output - 4
• Reasoning - "opit" is the substring. qcopit is a sub sequence and not a substring. 

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