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Job Title: Lead Java Developer
Location: Bangalore
Experience: 8-12 years (only)
Job Overview:
We are looking for a highly experienced Java / Backend Developer with a strong background in investment banking/trading/brokerages to join our team. The ideal candidate will have extensive experience in developing front office and middle office systems which require high availability, high reliability and low latency/high throughput performance profiles.
Skills & Qualifications:
- 8 to 12 years of experience in Java development, with at least 4 years in the investment banking/financial services domain.
- Strong knowledge of Java, Spring Framework, RESTful web services.
- Hands-on experience with AWS Cloud and related services. Knowledge of Kubernetes is a plus.
- Solid experience with Kafka and/or messaging protocols.
- Familiarity with SQL databases (e.g., Postgres/Oracle).
- Strong problem-solving skills and ability to work in a team.
- Ability to understand and work with distributed systems / microservices architecture.
- Solid written and verbal communication skills to interface with other technology and business stakeholders.
Company Name – Wissen Technology
Group of companies in India – Wissen Technology & Wissen Infotech
Work Location - Bangalore/Mumbai
Java Developer – Job Description
Wissen Technology is now hiring for a Java Developer - Mumbai with hands-on experience in Core Java, algorithms, data structures, multithreading and SQL.
We are solving complex technical problems in the industry and need talented software engineers to join our mission and be a part of a global software development team.
A brilliant opportunity to become a part of a highly motivated and expert team which has made a mark as a high-end technical consulting.
Required Skills:
- Exp. - 5+ years.
- Experience in Core Java and Spring Boot.
- Extensive experience in developing enterprise-scale applications and systems. Should possess good architectural knowledge and be aware of enterprise application design patterns.
- Should have the ability to analyze, design, develop and test complex, low-latency client- facing applications.
- Good development experience with RDBMS.
- Good knowledge of multi-threading and high-performance server-side development.
- Basic working knowledge of Unix/Linux.
- Excellent problem solving and coding skills.
- Strong interpersonal, communication and analytical skills.
- Should have the ability to express their design ideas and thoughts.
About Wissen Technology:
Wissen Technology is a niche global consulting and solutions company that brings unparalleled domain expertise in Banking and Finance, Telecom and Startups. Wissen Technology is a part of Wissen Group and was established in the year 2015. Wissen has offices in the US, India, UK, Australia, Mexico, and Canada, with best-in-class infrastructure and development facilities. Wissen has successfully delivered projects worth $1 Billion for more than 25 of the Fortune 500 companies. The Wissen Group overall includes more than 4000 highly skilled professionals.
Wissen Technology provides exceptional value in mission critical projects for its clients, through thought leadership, ownership, and assured on-time deliveries that are always ‘first time right’.
Our team consists of 1200+ highly skilled professionals, with leadership and senior management executives who have graduated from Ivy League Universities like Wharton, MIT, IITs, IIMs, and NITs and with rich work experience in some of the biggest companies in the world.
Wissen Technology offers an array of services including Application Development, Artificial Intelligence & Machine Learning, Big Data & Analytics, Visualization & Business Intelligence, Robotic Process Automation, Cloud, Mobility, Agile & DevOps, Quality Assurance & Test Automation.
We have been certified as a Great Place to Work® for two consecutive years (2020-2022) and voted as the Top 20 AI/ML vendor by CIO Insider.

Job Description:
Responsibilities:
- Completing all tasks set by the supervisor and assisting wherever possible.
- Observing existing strategies, techniques of coding, debugging, testing and adopting to the same
- Ability to maintain composure under pressure
- Ability to work in a team.
- Good observation skills and a willingness to learn.
Skills:
- Proficiency in data structures and algorithms
- Good problem solving and analytical thinking skills
- Knowledge of Linux systems
- Python coding knowledge
- Knowledge of object-oriented programming
- Good verbal and written communication skills.
Requisition Raised by:
Engineering Director
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
• Strong in Java 8 - streaming and non-blocking APIs
• Strong in Collection, generics, Data Structure and multi-threading
• Designing patterns and SOLID principles
• Problem solving and hands-on in writing complex implementation
Minimum of 4+ years of experience in Java development
- Experience delivering Services (REST, SOAP) and Web applications in Micro services architecture
- Experience developing and deploying Java solutions to cloud
- Experience in Spring Boot and components of Spring framework
- Experience in a JavaScript framework such as Angular or React
- Experience in TDD using Junit or similar frameworks
· Experience in Design Patterns and service oriented architectural principles, Data structures and Algorithms.
· Individual should be an active participant in the product design and code reviews for self and team and can competently review any aspect of their product or major sub-system.
· Experience in SQL, Unix skills.
· Good communication Skill
About Company: Ramphal Technologies is an Indian startup company. The company was founded by a visionary team of founders having a vast experience in Technology.
The company has a long term vision to disrupt the Indian Air Traffic scenario through technology Innovation. The Govt. Of India has officially signed a MOA with us to
build the next generation Technology platform to manage the Air Traffic in India.
About Opportunity: We have an exciting career opportunity for you where you will be part of developing a mission critical real time IT system. <<and explain the position>>
This role gives you an opportunity to disrupt how both manned and unmanned flights are going to fly in future. Your software will run in every Indian/Global Airport
and your work will keep the flight journey safe and efficient.
Java 8
Spring Boot
Microservices
Data Structures
Algorithms
Multithreading
Role:
- Design and Develop scalable high performance server applications
- Contribute towards scalable Design / Architecture for various modules / complete application
- Deliver high quality, robust, bug free code
Details
- Location – Pune
- Reporting to – CEO
- Team – To be built
This is what you will do
- Interface with the QA teams to ensure that the product meets desired quality standards
- Strong individual contributor who can develops excellent application without much supervision
- Excellent team player who can collaborate with other engineers to ship quality product in timely manner
- Assist Engineers in estimating effort, assigning tasks to engineers and tracking deliverables
- Research on new technologies, libraries and frameworks as per project needs
- Help maintain code quality, follow coding standards and guidelines
- Communicate on assignment progress / completion on a frequent basis
Educational Background:
- Engineering Graduate / Post Graduate Degree holder / MCA
Professional Experience:
- 4 – 7 Years of software development experience using Java/J2EE
Tech Skills
- Have very good hands on experience of Core Java, Spring, Hibernate and related JEE technologies
- Have good understanding of data structure and algorithms
- Good in programming fundamentals
- Basic understanding of HTML, CSS, JavaScript, Web technologies
- Basic understanding of RDBMS concepts, preferably using MySQL
- Good understanding of client-server architecture and multi-threading
- Knowledge of Web Services, XML and socket programming is plus
- Have very strong problem-solving skills
Other Skills
- Good listener
- Confident approach
- Strong problem-solving skill
- Highly proficient with MS Office
- Ability to structure processes and lay down the foundation for a department
Personality and attitude traits
- Passionate about work – We like people who like to work, and want their work to mean something
- Self-starter and motivator – We do not believe in monitoring or tracking team members
- Eager and quick to learn – If you are not excited to learn new things, then tech companies are not for you
- Individual contributor – We are a small team, and everyone has hands on contribution
- Start-up savvy


