
Minimum 7-12 Years of Core Java Programming with Collections Framework, Concurrent Programming, Multi-threading (Good knowledge in Executor service, Forkjoin pool and other threading concepts)
· Good knowledge of the JVM with an understanding of performance and memory optimization.
· Extensive and expert programming experience in JAVA programming language (strong OO skills preferred).
· Excellent knowledge on collections like, Array List, Vector, LinkedList, Hashmap, HashTable, HashSet is mandate.
· Exercised exemplary development practices including design specification, coding standards, unit testing, and code-reviews.
· Expert level understanding of Object Oriented Concepts and Data Structures
· Good experience in Database (Sybase, Oracle or SQL Server) like indexing (clustered, non clustered), hashing, segmenting, data types like clob / blob, views (materialized), replication, constraints, functions, triggers, procedures etc.

About Wissen Technology
About
The Wissen Group was founded in the year 2000. Wissen Technology, a part of Wissen Group, was established in the year 2015. Wissen Technology is a specialized technology company that delivers high-end consulting for organizations in the Banking & Finance, Telecom, and Healthcare domains.
With offices in US, India, UK, Australia, Mexico, and Canada, we offer 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.
Leveraging our multi-site operations in the USA and India and availability of world-class infrastructure, we offer a combination of on-site, off-site and offshore service models. Our technical competencies, proactive management approach, proven methodologies, committed support and the ability to quickly react to urgent needs make us a valued partner for any kind of Digital Enablement Services, Managed Services, or Business Services.
We believe that the technology and thought leadership that we command in the industry is the direct result of the kind of people we have been able to attract, to form this organization (you are one of them!).
Our workforce consists of 1000+ highly skilled professionals, with leadership and senior management executives who have graduated from Ivy League Universities like MIT, Wharton, IITs, IIMs, and BITS and with rich work experience in some of the biggest companies in the world.
Wissen Technology has been certified as a Great Place to Work®. The technology and thought leadership that the company commands in the industry is the direct result of the kind of people Wissen has been able to attract. Wissen is committed to providing them the best possible opportunities and careers, which extends to providing the best possible experience and value to our clients.
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Job Title : Java Backend Developer
Experience : 3 – 8 Years
Location : Pune (Onsite) (Pune candidates Only)
Notice Period : Immediate to 15 Days (or serving NP whose LWD is near)
About the Role :
We are seeking an experienced Java Backend Developer with strong hands-on skills in backend microservices development, API design, cloud platforms, observability, and CI/CD.
The ideal candidate will contribute to building scalable, secure, and reliable applications while working closely with cross-functional teams.
Mandatory Skills : Java 8 / Java 17, Spring Boot 3.x, REST APIs, Hibernate / JPA, MySQL, MongoDB, Prometheus / Grafana / Spring Actuators, AWS, Docker, Jenkins / GitHub Actions, GitHub, Windows 7 / Linux.
Key Responsibilities :
- Design, develop, and maintain backend microservices and REST APIs
- Implement data persistence using relational and NoSQL databases
- Ensure performance, scalability, and security of backend systems
- Integrate observability and monitoring tools for production environments
- Work within CI/CD pipelines and containerized deployments
- Collaborate with DevOps, QA, and product teams for feature delivery
- Troubleshoot, optimize, and improve existing modules and services
Mandatory Skills :
- Languages & Frameworks : Java 8, Java 17, Spring Boot 3.x, REST APIs, Hibernate, JPA
- Databases : MySQL, MongoDB
- Observability : Prometheus, Grafana, Spring Actuators
- Cloud Technologies : AWS
- Containerization Tools : Docker
- CI/CD Tools : Jenkins, GitHub Actions
- Version Control : GitHub
- Operating Systems : Windows 7, Linux
Nice to Have :
- Strong analytical and debugging abilities
- Experience working in Agile/Scrum environments
- Good communication and collaborative skills
Wissen Technology is now hiring for Java Developer with hands on experience in Core Java, multithreading, algorithms, and data structure.
We are solving complex technical problems in the financial 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 highly motivated and expert team which has made a mark as a high-end technical consulting.
Required Skills:
Experience - 3+.
Experience in Core Java 5.0 and above, CXF, Spring.
Extensive experience in developing enterprise-scale n-tier applications for financial domain. 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, preferably Sybase database.
Good knowledge of multi-threading and high-volume server-side development.
Experience in sales and trading platforms in investment banking/capital markets.
Basic working knowledge of Unix/Linux.
Excellent problem solving and coding skills in Java.
Strong interpersonal, communication and analytical skills.
Should have the ability to express their design ideas and thoughts.
Hi,
As discussed, please refer to below Job description and revert with you updated resume –
About Client : Client is a digital accelerator to Startups, SMEs, MSMEs, and large enterprises with a significant contribution across 22+ industries including BFSI, Healthcare, Ecommerce & Retail, Education & eLearning, Insurance, Tech Startups, Government & Semi-Government, and more. Backed with an impressive experience of 25+ years and a fast-growing family of 4000+ engineering professionals our capabilities span across IT Consulting, Strategy Planning & Execution, Business Process Re-engineering, IT Modernization, and Business Analysis Consulting, our solutions are devised meticulously to address the needs of specific industries.
We are a CMMI Level 5 organization global IT Solution provider and Outsourcing company headquartered in Mumbai and footprints with 10 delivery centres in India and 15 global offices. Our success portfolio boasts of 7500+ projects accomplished across 1500+ clients in 50+ countries with client retention rate as high as 85%
Job Description :
Java Architect (10+ Years)
Location: Navi Mumbai, CBD Belapur
Domain: Banking (Payment Gateway Project)
NOTE: 1st and 3rd Saturdays working as per banking norms
Education: B.E. or Graduation in Computer Science or related field
Key Responsibilities:
• Architectural Leadership: Lead the architecture and design of complex, scalable, and secure banking applications, focusing on payment gateway solutions.
• Technology Stack Mastery: Provide expertise in Java, Spring, Spring Boot, Microservices, Hibernate, REST API, Oracle SQL, and cloud-native architectures using AWS.
• Spring Validation & Authorization: Ensure secure and validated input handling using Spring Validation, and implement robust authorization mechanisms with Spring Security.
• Cloud Integration: Design and implement cloud-native architectures using AWS, including services like EC2, S3, RDS, Lambda, and API Gateway.
• Security Standards: Ensure adherence to banking security st OAuth2, JWT, and encryption protocols.
• Database Design: Oversee the design and optimization of relational databases, focusing on Oracle SQL and knowledge of NoSQL databases like MongoDB.
• Performance Optimization: Implement strategies for application performance tuning, caching, and scalability.
• Collaboration & Mentorship: Work closely with cross-functional teams, providing technical guidance and mentoring to developers.
• Stakeholder Engagement: Collaborate with business stakeholders to ensure architectural alignment with business objectives and technical constraints.
• Code Quality & Reviews: Conduct regular code reviews, ensuring compliance with best practices and architectural standards.
Skills and Qualifications:
• Extensive Experience: 8+ years in Java development and architecture, with a proven track record in the banking domain, particularly in payment gateway projects.
•Technological Proficiency: Deep expertise in Java, Spring, Spring Boot, Microservices, Hibernate, REST API, Oracle SQL, Spring Validation, Spring Security for authorization, AWS, Docker, Kubernetes, and Jenkins.
• Cloud & DevOps Knowledge: Good understanding of cloud-native applications and DevOps practices.
• Security Focus: Experience in implementing security protocols and practices in a banking environment.
• Leadership & Communication: Strong leadership, communication, and stakeholder management skills.
• Innovative Thinking: Ability to think critically and provide innovative solutions to complex problems.
Required Documents:
• 10th and 12th passing certificates and marksheets.
• Graduation marksheets and passing certificate.
• Graduation degree (Convocation) certificate. • All employer offer letters and relieving letters (with stamp and CIN number on letterhead)
Regards
Amit Kumar Pandey
• Hands on RDBMS experience with Oracle/ PostgreSQL/ MySQL/SQL
Server including transaction management, SQL programming, data
modelling, etc.
• Must have proven track record of logical data modeling and physical
data modeling
• Experienced in using ORM frameworks like Hibernate, etc.
• Basic understanding of NoSQL systems like Redis (Key-Value store),
MongoDB (Document store), Elasticsearch (Search / Document store)
• Design, Development & Deployment of Microservices using Spring
Boot or any other framework.
• Understanding of building EDA-based (Event Driven Architecture)
systems.
• Basic understanding of any public cloud (AWS, Azure, GCP)
• Ability to design & architect a system that exhibits basic
characteristics like modularity, configurability / extensibility, scalability
& availability.
• Maven / Gradle
• Experience in using & configuring Jenkins.
• Experience in using & configuring SonarQube.
Essential Requirements
• Hands-on with Java Platform (1.5 & above) having proficiency in OOPs
concepts, Collections,
• Generics, Streams, Multi-threading (Executor Framework), Functional
Programming.
• Design & Development of REST Web Services (Spring MVC / REST /
Jersey / Apache CXF, etc.)
• Hands-on experience using Spring framework (4.x & above)
• Core / Beans
• MVC / REST
• Security
• Spring Data / JPA
• Spring Test / JUnit
• JMS
• Determining project requirements and developing work schedules for the team.
• Delegating tasks and achieving daily, weekly, and monthly goals.
• Liaising with team members, management, and clients to ensure projects are completed
to standard.
• Identifying risks and forming contingency plans as soon as possible.
• Analyzing existing operations and scheduling training sessions and meetings to discuss
improvements.
• Keeping up-to-date with industry trends and developments.
• Updating work schedules and performing troubleshooting as required.
• Motivating staff and creating a space where they can ask questions and voice their
concerns.
• Being transparent with the team about challenges, failures, and successes.
• Writing progress reports and delivering presentations to the relevant stakeholders.
Technical Lead Requirements:
• Bachelor’s degree in computer science, engineering, or a related field.
• Relevant Management certification may be required.
• Experience in a similar role would be advantageous.
• Excellent technical, diagnostic, and troubleshooting skills.
• Strong leadership and organizational abilities.
• Willingness to build professional relationships with staff and clients.
• Excellent communication, motivational, and interpersonal skills
• Bachelor’s degree in Computer Science or IT related field
• 4-6 years of experience working across different product domains in a product development/engineering role
• Good communication skills necessary to manage business requests and work with different teams across differ-
ent geographies and time-zones; experience working with remote and distributed teams will be an added ad-
vantage
• Hands-on working knowledge and experience is requiredin:
a. JavaScript, Typescript, NodeJS (Express, NestJs, etc.)
b. Experience working in GCP or AWS or Azure
c. Experience working in Containers & Unix Platforms
d. Relational Databases (PostgreSQL, MySQL, SQL, etc.)
e. Agile Methodologies (Scrum, TDD, BDD, etc.)
f. Understanding of Microservices Architecture, Domain Driver Design, Test Driven Development and
Secure Design patterns and architecture is a must
g. Data Structures and Algorithms using Javascript, Typescriptand/or other Programing Languages
h. Strong organizational skills
i. Agile Methodologies (Scrum, TDD, BDD, etc.)
• Experience with several of the following tools/technologies is desirable:
a. GIT (Bit Bucket, Gitlab, etc.), Jira, Gradle, Maven, Jenkins, SharePoint, Eclipse/IntelliJ.
b. Design Patterns and implementing the Design Patterns
c. Development of Complex Application and System Architectures
d. NoSQL Databases (Redis, Mongo, etc.)
e. Full stack development
f. Experience working with CI/CD pipelines with for example GitHub Actions.
• Knowledge of the following technologies is a plus:
a. Other Programming Languages (Java, Python, etc.)
b. Continuous Integration and Continuous Delivery Tools like Jenkins, Git, etc.
c. Secure Development based on OWASP standards
Job Description
Apply only if you have experience in data structure and algorithms. (Data structure and algorithms based questions is a part of the interview)
Experience: 3 + years
Location: Bangalore
Notice Period: Immediate to 20 days
Working: currently WFH
Skills: Core Java developer, hashmap, linked list, array, spring, hibernate, OOPS
Please mention the IT skills worked on.
● Strong programming skills in designing and implementation of multi-tier applications using web-based technologies like Spring MVC andSpring Boot.
● Knowledge in Spring Core such as Dependency Injection,Annotations and XML based Configurations.
● Knowledge in Spring JDBC & Spring Hibernate ORM.
● Good experience in developing applications with RESTFul Web Services.
● Knowledge in technologies like Apache Tomcat 7.0/8.0/8.5, Nginx
● Expertise in MySQL database technology
● Proficient at designing dynamic web applications using HTML5,
CSS3, JavaScript, jQuery, AJAX, JSON with responsive web applications using Bootstrap.
● Knowledge in AngularJS, Angular 2+ practices in commonly used
modules and creating reusable Components, Pipes and Services.
● Experienced in version control tools like GIT and ticket tracking platforms like Redmine, Backlog, etc.









