
Wissen Technology is now hiring for a Java Developer - Bangalore 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:
- Experience - 4+ 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
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.
Connect with the team
Similar jobs
JOB DETAILS:
* Job Title: Engineering Manager (Client facing)
* Industry: Technology
* Salary: Best in Industry
* Experience: 8-12 years
* Location: Bengaluru
Role & Responsibilities
We are seeking a visionary and decisive Engineering Manager to join our dynamic team. In this role, you will lead and inspire a talented team of software engineers, driving innovation and excellence in product development efforts. This is an exciting opportunity to influence and shape the future of our engineering organization.
Key Responsibilities:
- Provide technical leadership and mentorship to a high-performing team of software engineers.
- Develop and implement engineering strategies that align with organizational goals.
- Manage multiple concurrent projects, ensuring timely delivery and high-quality outcomes.
- Collaborate closely with cross-functional teams to define and prioritize product features.
- Implement and uphold Agile methodologies to optimize team performance and efficiency.
- Conduct regular performance evaluations, fostering continuous professional growth within the team.
- Oversee the entire software development lifecycle, from initial conception through to deployment.
- Manage budgets, resources, and capacity planning for engineering projects.
- Stay up-to-date with emerging technologies, ensuring the team is equipped with the latest industry trends.
- Ensure adherence to best engineering practices, maintaining high coding standards.
- Hands-on coding experience required – actively contribute to coding and technical design decisions.
- Tech stack: Java, Spring, microservices, cloud technologies, and building large-scale systems.
- Experience in collaborating directly with clients – ensuring client requirements are met and managing relationships effectively.
Ideal Candidate
- Strong Client-Facing Engineering Manager Profile
- Must have 8+ years of engineering experience, with substantial exposure to back-end development, scalable distributed systems, and modern web services
- Must have 2+ years of experience in people and delivery leadership, owning engineering execution and leading teams to deliver complex products
- Must have proven experience working directly with external stakeholders / clients, translating client requirements into engineering plans and delivering solutions with high customer impact
- Strong technical foundation with experience in backend engineering, REST APIs, databases (SQL/NoSQL), and building reliable, high-performance systems
- Strong problem-solving and design capabilities; experience with system design, architecture reviews, and engineering best practices
- Must have expertise in agile methodologies and project management tools
- Excellent written and verbal communication skills, with a track record of presenting technical solutions to both technical and non-technical stakeholders
- (Cross-Functional Collaboration): Must be skilled in working with product, design, sales, and client teams to drive requirements, delivery, and client success
- (Execution & Delivery): Demonstrated ability to manage end-to-end delivery, coordinate releases, prioritise effectively, and deliver results in time
- (Company): Product companies
- (Stability): Must have stayed for at least 2 years with each of the previous companies
- (Education): B.Tech in computer science, engineering or a related field from Tier 1, Tier 2 colleges (Master's preferred)
Java JD
Exp: -2- 4 Years
Location: - Manyata Tech Park, Bangalore, Karnataka, India
Immediate Joiners-15 Days
Job Responsibilities
- Strong experience with Spring and Spring Boot, Spring MVC, Spring Data, Spring Security
- • Exposure working in microservices and containerization(Docker/Kubernetes)
- • Experience with Web Services (JSON, REST, JAX-RS, Spring based REST services)
- • Strong with Java and J2EE/Java EE (including servlets, JSP, JSF, JDBC)
- • Strong understanding of Java Multithreading
- • Experience working with DB like Mongo, Casandra etc.
- • Experience with at least one of the development tools like Git, Gradle, Maven, Sonar, Jenkins, Artifactory etc
- • Experience with web application servers like Tomcat, Jetty, JBoss etc
- • Experience with TDD, code testability standards, JUnit/Mockito
- • Experience with DevOps practices and CICD model of development
- • Good understanding of OOP, design patterns and industry best practices
- • Agile project experience along with working on Agile tools like JIRA
- • Strong written and verbal communication skills
- Good to have Skills:
- • Strong interpersonal skills and time management skills
- • Strong analytical and troubleshooting skills
Java Developer – Job Description
Wissen Technology is now hiring for a Java Developer - Bangalore 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. - 5-8 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.
Required Qualifications:
- 5+ years of professional software development experience.
- Post-secondary degree in computer science, software engineering or related discipline, or equivalent working experience.
- Development of distributed applications with Microsoft technologies: C# .NET/Core, SQL Server, Entity Framework.
- Deep expertise with microservices architectures and design patterns.
- Cloud Native AWS experience with services such as Lambda, SQS, RDS/Aurora, S3, Lex, and Polly.
- Mastery of both Windows and Linux environments and their use in the development and management of complex distributed systems architectures.
- Git source code repository and continuous integration tools.
Sr Java Developer
Experience: 5+ Years
Location: Navi Mumbai, CBD Belapur
Domain: Banking (Payment Aggregators Project)
Work Schedule: 1st and 3rd Saturdays required, as per banking norms
Education: B.E. or Graduation in Computer Science or related field
Budget- 15 Lacs max fixed
Initial document check list before sharing the profiles.
Education
- 10th Passing Certificate
- 10th Mark Sheet
- 12th Mark Sheet
- 12th Passing Certificate
- Convocation Certificate (Mandatory)
- PG (if completed) Degree Certificate & Passing Certificate
Employment
- Previous Organization’s Offer Letter
- Previous Organization’s Appointment Letter
- Previous Organization’s Experience Letter
- Resignation Acceptance Mail from Previous Organization
JOB DESCRIPTION
Key Responsibilities:
Application Development: Design, develop, and maintain robust applications using Java, Spring, Spring Boot, Microservices, Hibernate, REST API, and Oracle SQL.
Spring Validation & Security: Implement input validation and manage secure access to resources using Spring Security.
Collaboration: Work hand-in-hand with cross-functional teams to define, design, and deliver innovative features.
Performance Optimization: Ensure peak performance, quality, and responsiveness of applications.
Problem Solving: Identify bottlenecks and bugs, and craft effective solutions.
Code Quality: Maintain high standards of code quality, organization, and automation.
Skills and Qualifications:
Experience: 5+ years in Java development.
Technical Proficiency: Expert in Java, Spring, Spring Boot, Microservices, Hibernate, REST API, Oracle SQL, and Spring Security.
Banking Domain Knowledge: Experience in payment gateway projects is a plus.
Design Patterns: Strong understanding of object-oriented programming and design patterns.
Problem Solver: Excellent analytical skills and ability to thrive in a fast-paced environment.
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
Your Qualifications:
7 to 12 years of experience with majority as Java engineer
Strong hands on experience on building application using technologies Java, Spring, Hibernate, Maven/Gradle.
Experience in building Micro Services using Spring Boot / Go.
Strong knowledge and experience with SQL queries and databases like Postgre SQL/Oracle.
Strong knowledge and experience on Platform components such as Docker, Kubernetes and Service Mesh (Istio).
Good knowledge of scripting languages (preferably Python and Bash)
Familiarity with CI/CD environment (Jenkins).
Experience on Observability stack such as ELK Stack, Prometheus & Grafana would be added advantage.
Should have experience on Active MQ based async queuing system design and deployment.
Strong experience of system design and implementation of end-to-end integrated systems.
Familiarity with Hazelcast and Zk Solution would be a plus.
Strong skills to write technical design documentation.
Experience of leading a team as tech lead.
Ability to work effectively in a team environment as well as independently.
Good communication skills with tech/non-tech people.
What You'll Do:
Assigned to software development projects and/or system enhancements as tech lead.
Be engaged in a whole process of development project (requirements analysis, design, implementation, testing/verification, deployment, operation/maintenance).
Work closely with project manager and other engineers. Some of them are in different locations such as Japan and Singapore.
Always improve the design quality, code quality, testing quality and system quality spontaneously. In addition, create such a culture in our team.
Understand business needs and user behavior and develop solutions to those needs.
Develop and maintain a deep understanding of our systems and propose system improvements.
Guide and support less-experienced members as mentor and role model to improve the team productivity and achieve team’s goals together.
Better to Have:
Familiarity with Telecom Service Provider’s Billing Ecosystem/BSS Systems.
Familiarity with and experience on Cloud Native Technologies.
Familiarity with Agile Software development process.
Familiarity with and experience on Linux/Unix environment
Work experience with a remote team
Familiarity with Atlassian tools (JIRA, Confluence, HipChat)
Familiarity with source control system (Gitlab, SVN, etc.)
OUR COMMITMENT TO YOU:
You'll benefit from our network of global communities and collaborative culture that will help you build technical and functional skills and capabilities. And because we serve more than 28 countries industries globally, you'll have the opportunity to develop valuable industry-specific expertise.
The scale of our capabilities and client engagements and the unique way we innovate, operate and deliver value will give you the opportunity to deepen your existing skills even as you help create the latest technology trends. You'll have access to leading-edge technology.
Type: Individual contributor with good hands on proficiency.
Must have
- Strong proficiency in at least one of Java, Ruby, Python
- Exposure to databases: any of PostgreSQL, MySQL, Apache Cassandra
- Any NoSQL database experience is a plus
- Exposure to AWS cloud infrastructure: EC2 or S3
- Proficiency with Git
- MUST: Using REST to make API calls.
Great to have:
- Experience working with one or more middleware, enterprise bus, queueing frameworks
- Any of Memcached/Redis, Apache Kafka / RabbitMQ / PubSub+ / AmazonMQ
Soft skills:
- Appreciation for clean and well documented code
What will you do at Tradyl:
(Examples for illustration only)
- Build a shipping service module that is called by our website to query shipping rates from India to a destination country. Configure this to so that an Ops person can update shipping costs as and when they change. Own deployment and monitoring of this service.
- Use Zapier to build a workflow to export a MixPanel report into a Google sheet every day.
- Change our supplier portal (built on bubble.io) to make an API call to our customer facing site, whenever a supplier modifies his profile.
- Write an alert mechanism that identifies catalogues with insufficient information and makes them non discoverable, which can run every day.
- Work with Business Team to design a workflow for product inwarding using Airtable. Write a small app within Airtable so that whenever a product is updated as “shipped” in airtable, it updates the customer facing website.
- Use an open source dashboarding framework to create a quick dashboard to track important business events.

- 3+ Years of experience in MDM (IDD UserExits / Hub User Exits)
- 2+ years experience in Java
- 1+ years’ experience in Activos
- 3+ years experience developing with SIF API, BES apis.
- Well versed with SOAP and RESTful WebServices
- Working with business partners and technical team to understand the requirements.
- Develop, program, and unit test the Java code needed.
- Support integration and Regression testing activities around custom Java objects
- Bachelor’s degree in a technical area or equivalent
- Ability to move between high level architecture design and getting involved in all phases of hands-on development
- Excellent communication skills, particularly those relating to complex findings and presenting them to ensure audience appeal at various levels of the organization
- Ability to integrate research and best practices into problem avoidance and continuous improvement
- Strong analytical and problem-solving skills
- Strong interpersonal skills to successfully team with software vendors, external partners and internal business and IT associates.
- Must be able to perform as an effective member in a team-oriented environment, maintain a positive attitude, and achieve desired results while working with minimal supervision







