Java Backend Developer (AVP Role)
at one of the world's leading multinational investment bank
2. Data structure (HashMap, treemap, arraylist, linklist),
3. Streaming concepts (partitioning), Junit
4. Exception handling and workflow, Test coverage (why its important, how it gets handled at
java and spring layer, morckito library if the candidate knows that would be great),
5. OOPS concepts (inheritance),
6. Threading (mutex, threadpool, threading implementation, singleton factory, builder pattern,
abstract)
7. Real world problems (atleast 1 to be asked in IAAS interview) (movie ticket booking, parking
booking), To be asked to only selected candidates: Puzzle (probability/)
8. Memory management: Garbage Collection (GC), Heap dump, Thread dump, apache, google
library.
9. Spring frameworks and database. Data lakes, star lakes, schemas, indexing, partitioning,
optimize query, hibernate.
10. Data warehouse vs nosql vs time series database (KDB, DB2), data storage patterns.
11. Types of transaction control. Column level.
12. Query formation, grouping, nested queries, joints (inner joints, outer joints)
13. If candidate has spring exp: Architecture and various layers of Spring, coupling concepts,
dependency injections, inheritance, Bean level, JMS connection pooling concepts, Lambda,
Annotation vs XML, Kafka, Hibernates.
14. Good to have AI/ML inclination.
Bifurcation of Must have and good to have skills:
Must have skills Good to have skills
Core java (60%), spring (15%), and databases
(15%).
Mockito library
Data structure (HashMap, tree map, array list,
link list)
Threadpool
Streaming concepts (partitioning) Memory management
Exception handling Lambda, Annotation vs XML, Kafka, Hibernates
OOPS GCP or any cloud technology
Threading (singleton factory, builder pattern) AI/ML inclination
Real world problems (movie ticket booking,
parking booking)
Spring frameworks and database (indexing,
partitioning, layers of Spring, JMS connection)
Data warehouse vs NoSQL vs time series
database
Junit
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We are hiring Java Server Engineers to design and develop our core services and application platform. You will write the server-side code for all our web/mobile-based services. The focus will be on creating robust high volume applications, and at the same time have the ability to turn around quick prototypes.
Requirements:
- 2-4 years of commercial software development experience with a strong, system-wide background in Java/J2EE server development.
- BE or MS in Computer Science or equivalent.
- Experience developing database-driven, Internet-based, server applications is a must.
- Sound understanding of various design patterns and hands-on experience in Multithreading, Collections, and Concurrency are required.
- Experience with web services, and agile development methodologies desired.
- Experience with web application languages such as Ruby would be nice to have.
- Self-motivated: You can work with a minimum of supervision and be capable of strategically prioritizing multiple tasks in a proactive manner.
- Driven: You are a driven team player, collaborator, and relationship builder whose infectious can-do attitude inspires others and encourages great performance in a fast-moving environment.
- Entrepreneurial: You thrive in a fast-paced, changing environment and you're excited by the chance to play a large role.
- Passionate: You must be passionate about online collaboration and ensuring our clients are successful; we love seeing hunger and ambition.
- Thrive in a startup mentality with a whatever-it-take attitude.
About MangoApps
We have one goal and one goal only - To build tools that employees at workplaces across the globe use to be successful at work everyday. We have spent the last 10+ years building and redefining enterprise workplace software solutions. We are proud of the products we have built, the customers who have placed their trust in us and the industry recognition we have won for our products and people practices.
Exciting challenges lie ahead as we set stretch goals for ourselves, stand outside the box and continue to innovate the employee work experience for businesses across the globe. We are just getting started.
Come join us as we continue to scale!
Our Culture
There are jobs, and then there are once in a lifetime opportunities.If you thrive in a fast paced environment and want to be part of something BIG, MangoApps is the place for you.
If you looking for not just a "job" but the kind of work that adds up to something meaningful. This is the place for you. MangoApps has been described a lot of things, a fun place, an opportunity to make an impact, workplace with a flat hierarchy and good quality work, devoid of any office politics. A place where your work speaks for you. A place where you make some friends and a lot of memories.
You have to experience it to truly believe it. Too good to be true? But it is!
Did we mention the awards for -
- Great Places To Work 2023-24
- Most Innovative HR Practices,
- Fun at Work Award and the listing among
- Top 51 Dream Companies to Work for in India at the World HRD Congress 2019
Building a world-class product requires not just awesome technical skills but also intense commitment and the keeping-at-it ability. Qualities we look for in every Springster who comes on-board.
● Care about things like fault tolerance, durability, backups and recovery,
performance, maintainability, code simplicity etc.
● Lead a team of software engineers and help create an environment of ownership
and learning.
● Introduce best practices of software development and ensure their adoption
across the team.
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Experience: 6 - 10 years
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Experience -2 yrs to 7yrs .
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Location - Zirakpur (Mohali )
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interested candidates share your CVs.
Job Description for Drools developer -
- Hands on experience in design and development in Drools rule engine (minimum 1.5 years) and Core Java
- Exceptional ability to communicate with both technical and non-technical people
- Expertise in object oriented programming
- Experience in Deploying and supporting core and advanced features
- Good exposure to SQL and/or Oracle/ MySQL,
- Candidate should be well verse with Agile processes
- Strong ability to work collaboratively across diverse groups of business and technical stakeholders is required.
Who you are:
- You have an overall software development experience of 4 to 10 years
- 3+ years proficiency in Java and Spring boot
- Familiar with distributed computing and frameworks such as gRPC/ protobuf
- Understands JVM metrics, Garbage collection and performance tuning
- Experience in creating high-level design(HLD) and low-level design(LLD)
- You have a good understanding of relational database, NoSQL technologies, and REST
- Good to have experience in HTML, JavaScript, GraphQL, TypeScript, ReactJS and related toolsets
- Exposure to AWS stack/cloud computing
- Self-motivated developer who takes ownership of work
- Bachelor’s degree in Computer Science or Computing related discipline
- Experience in Product Development Environment is a plus.
Responsibilities:
- Design and deliver scalable web services, APIs and backend data modules.
- Understand requirements and develop reusable code using design patterns & component architecture and write unit test cases
- Collaborate with product management and engineering teams to elicit and understand the requirements and develop solutions
- Stay current with latest tools, technology ideas and methodologies; share knowledge by clearly articulating results and ideas to key decision makers.
Required Qualifications:
- 6+ years of experience writing multithreaded programs running in Java
- Experience on Java, Spring Boot,, Apache Nifi , workingDocker, EKS, Azkaban, Jenkins
- Experience with Git and build tools like Gradle/Maven/SBT.
- Strong understanding of object-oriented design, data structures, algorithms, profiling, and optimization.
- Have elegant, readable, maintainable and extensible code style.
- Experience on AWS is preferable
- Knowledge on top algorithms like sorting, heap/stack, queue, search, etc.
- Familiarity with test-driven development
- Thrive in a fast-paced environment, with ability to deliver code of quality quickly.
- Attention to details. Strong communication and collaboration skills.
- BS in Computer Science or equivalent
Upgrade existing Java (1.6) application running on Apache Tomcat to new Java (1.8) version and new Apache Tomcat version |
Make necessary code changes for porting application to new Java versions and Tomcat versions |
Set up new application environments for Dev, SIT and Production |
Perform unit testing and support user testing. |
Deploy new upgraded application in production |
Provide post implementation support. |
Analyze and resolve defects coming out of testing and post production deployment. |
Modify existing application code to use Sql Server as backend. |
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Are you curious, motivated, and forward-thinking? At FIS you’ll have the opportunity to work on some of the most challenging and relevant issues in financial services and technology. Our talented people empower us, and we believe in being part of a team that is open, collaborative, entrepreneurial, passionate and above all fun.
About the team
In today’s highly competitive private equity market, firms must not only deliver superior returns, but also respond to more stringent reporting requirements and increasing demands for information – both from within and outside their organization. Throughout the industry there is mounting pressure on organizations to do more, requiring a clear technology strategy that not only addresses the demands of today, but also enables the growth and performance of tomorrow.
What you will be doing
This position would be part of CORE product development team to work on:
- Development of new modules & functionality.
- Fixing of the production bugs for existing clients.
- Contribute in team meetings to provide suggestions or raise concerns where necessary
- Participate actively in Agile SCRUM & play the role that SCRUM team demands
- Participate in technology discussions to perform POC’s & help in scaling the application
- Provide technical guidance to other team members.
What you bring:
Knowledge / Experience
- 3-5 Years of hands-on experience on Java with knowledge of Garbage Collector, JMS, Event Based programming, Collections, Java Streams, Spring Dependency Injection Framework.
- Experience in Angular 2+.
- Experience working with Spring and Hibernate frameworks.
- Working knowledge on application Servers (WildFly)
- Strong experience in REST Web Services.
- Good knowledge in writing DB queries (Oracle, SQL Server)
- Experience working in Unix/Linux environment and proven knowledge of scripting languages
- Exposure to MQ / AMQ messaging system.
- Sound knowledge of Design Patterns
Skills
- Desired to have knowledge of JMX
- Agile – SCRUM or XP or TDD methodology preferred.
Qualifications
- Bachelor’s degree in Computer Science or equivalent
Competencies
- Fluent in English
- Excellent communicator – ability to discuss technical solutions to internal and external parties and adapt depending on the technical or business focus of the discussion
- Attention to detail – track record of authoring high quality documentation
- Organized approach – manage and adapt priorities according to client and internal requirements
- Self-starter but team mindset - work autonomously and as part of a global team
What we offer you
- A multifaceted job with a high degree of responsibility and a broad spectrum of opportunities
- A broad range of professional education and personal development possibilities – FIS is your final career step!
- A competitive salary and benefits
- A variety of career development tools, resources and opportunities
With a 50-year history rooted in the financial services industry, FIS™ is the world's largest global provider dedicated to financial technology solutions. We champion clients from banking to capital markets, retail to corporate and everything touched by financial services. Headquartered in Jacksonville, Florida, our 53,000 worldwide employees help serve more than 20,000 clients in over 130 countries. Our technology powers billions of transactions annually that move over $9 trillion around the globe. FIS is a Fortune 500 company and is a member of Standard & Poor’s 500® Index.
FIS is committed to protecting the privacy and security of all personal information that we process in order to provide services to our clients. For specific information on how FIS protects personal information online, please see the https://www.fisglobal.com/-/media/fisglobal/files/policies/privacy/online-privacy-notice/english.pdf?la=en">FIS Online Privacy Notice.
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Successfully won Techcrunch Disrupt
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Optimized an algorithm that holds the current world record for Weisman Scores