1. Production Issues
Resource Utilization Graph, Thread Pool Size and Thread Exhaustion, Testing a Web Service in Unit testing, Functional testing and Performance Testing, Code Coverage, Production System Health, High Availability,
2. Front End Development
Application Performance for Application Design and Development, Network, Storage, Responsive Design and Internationalization, Asynchronous Programming in Web Development such as Promise, Observables, Subject on pub sub model, HTML5 Web Storage and Cookies, Web Workers, Section 508 requires, Scalable UI Architecture
3. Systems Internals
Threads and Processes, Heap and Stack, Garbage Collection, Thread Context Switching, User and Kernel Mode, Swap Space
4. Object Oriented Design
Composition and Inheritance, Aggregation, Association, Relationships, Dependency Injection, Algorithms used in different Collection Types in Java, Overloaded vs Overridden, Base or Derived, Observers
5. Testing and Code Quality
Test Types, Hard to Test Code, Refactoring, Mocks, Slow Tests, Shortest Route Test Cases, Production Data in Testing, Random Number Generator
6. Application Deployment
Git Life Cycle a Commit, Pull, Branching, Rebase and Merge, Chery Picking and switch, Deployment Strategies: Blue Green, Canary, Continuous Integration and Continuous Delivery
7. General Programming
Object Oriented Principles, Data Structures, Race Condition, Java Collections, Java Threads and Concurrency, Analytical and Logical Thinking
8. Web API Concepts
Same Origin Policy, Bad API, Filtering, Sorting and Pagination, Scalability, Rate Limiter, API Versioning, Cookies, Content Negotiation, REST Resource Example, Chatty Endpoint, GET Authentication, Content Negotiation
9. Networking and Security
Least Privilege, Authentication and Authorization using JWT and OAuth2, Access and Refresh Tokens, Web Security Vulnerabilities XSS, CSRF, SQL Injection, Session and Click Hijacking, Man in the Middle attacks.
10. Databases
RDBMS versus NoSQL, BLOBs and CLOBs, Joins and Sub Queries, View and Triggers, Performance Optimization, Idempotency, Multi tenant Databases, Optimistic Concurrency, Consistency
11. Performance and Troubleshooting
Memory Management, Store and Process Later Strategy, ORM Library, Caching on the Local File System, Process Files by File Extension, Slow Query, Resource Utilization Graph, Benchmarking
Key job details
About Virtusa
Teamwork, quality of life, professional and personal development: values that Virtusa is proud to embody. When you join us, you join a team of 27,000 people globally that cares about your growth — one that seeks to provide you with exciting projects, opportunities and work with state of the art technologies throughout your career with us.
Great minds, great potential: it all comes together at Virtusa. We value collaboration and the team environment of our company, and seek to provide great minds with a dynamic place to nurture new ideas and foster excellence.
Virtusa is an Equal Opportunity Employer. All applicants will receive fair and impartial treatment without regard to race, color, religion, sex, national origin, ancestry, age, legally protected physical or mental disability, protected veteran status, status in the U.S. uniformed services, sexual orientation, gender identity or expression, marital status, genetic information or on any other basis which is protected under applicable federal, state or local law.
Applicants may be required to attend interviews in person or by video conference. In addition, candidates may be required to present their current state or government-issued ID during each interview. All candidates must be authorized to work in the USA.
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