
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.

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 Description below :
Role: Java Developer
JOB REQUIREMENT
Location: Bangalore
Skills -
- DS Algorithms
- Oops Concept
- Java
- Spring
Job Brief-
- Understand product requirements and come up with solution approaches
- Build and enhance large scale domain centric applications
- Deploy high quality deliverables into production adhering to the security, compliance and SDLC guidelines
1 Senior Associate Technology L1 – Java Microservices
Company Description
Publicis Sapient is a digital transformation partner helping established organizations get to their future, digitally-enabled state, both in the way they work and the way they serve their customers. We help unlock value through a start-up mindset and modern methods, fusing strategy, consulting and customer experience with agile engineering and problem-solving creativity. United by our core values and our purpose of helping people thrive in the brave pursuit of next, our 20,000+ people in 53 offices around the world combine experience across technology, data sciences, consulting and customer obsession to accelerate our clients’ businesses through designing the products and services their customers truly value.
Job Description
We are looking for a Senior Associate Technology Level 1 - Java Microservices Developer to join our team of bright thinkers and doers. You’ll use your problem-solving creativity to design, architect, and develop high-end technology solutions that solve our clients’ most complex and challenging problems across different industries.
We are on a mission to transform the world, and you will be instrumental in shaping how we do it with your ideas, thoughts, and solutions.
Your Impact:
• Drive the design, planning, and implementation of multifaceted applications, giving you breadth and depth of knowledge across the entire project lifecycle.
• Combine your technical expertise and problem-solving passion to work closely with clients, turning • complex ideas into end-to-end solutions that transform our clients’ business
• Constantly innovate and evaluate emerging technologies and methods to provide scalable and elegant solutions that help clients achieve their business goals.
Qualifications
➢ 5 to 7 Years of software development experience
➢ Strong development skills in Java JDK 1.8 or above
➢ Java fundamentals like Exceptional handling, Serialization/Deserialization and Immutability concepts
➢ Good fundamental knowledge in Enums, Collections, Annotations, Generics, Auto boxing and Data Structure
➢ Database RDBMS/No SQL (SQL, Joins, Indexing)
➢ Multithreading (Re-entrant Lock, Fork & Join, Sync, Executor Framework)
➢ Spring Core & Spring Boot, security, transactions ➢ Hands-on experience with JMS (ActiveMQ, RabbitMQ, Kafka etc)
➢ Memory Mgmt (JVM configuration, Profiling, GC), profiling, Perf tunning, Testing, Jmeter/similar tool)
➢ Devops (CI/CD: Maven/Gradle, Jenkins, Quality plugins, Docker and containersization)
➢ Logical/Analytical skills. Thorough understanding of OOPS concepts, Design principles and implementation of
➢ different type of Design patterns. ➢ Hands-on experience with any of the logging frameworks (SLF4J/LogBack/Log4j) ➢ Experience of writing Junit test cases using Mockito / Powermock frameworks.
➢ Should have practical experience with Maven/Gradle and knowledge of version control systems like Git/SVN etc.
➢ Good communication skills and ability to work with global teams to define and deliver on projects.
➢ Sound understanding/experience in software development process, test-driven development.
➢ Cloud – AWS / AZURE / GCP / PCF or any private cloud would also be fine
➢ Experience in Microservices
Job description
Opportunity
We are looking for a young and enthusiastic personality who loves coding. Who is passionate and ready to tackle some of the most difficult problems in the laundry industry. We believe that user-centric design ultimately leads to the best products, so we listen closely to our users, both external and internal. As an engineer on our close-knit, cross-functional team, you'll be an active voice in shaping our product.
You will play a role in product planning, drive the implementation and release of major features, and be a champion of best practices for writing well-tested, well-organized code.
Tech Stack
Our tech stack is http://asp.net/">ASP.NET, MVC, Webform, WebAPI, MSSQL Server, JQuery, Javascript, Angular 2 and microservices architecture. Our platform is hosted on Google Cloud.
Responsibilities
- Work with internal business teams and management to define requirements and develop technical specifications.
- You will be creating modules and components and coupling them together into a functional app.
- Creating self-contained, reusable, and testable modules and components
- Developing and integrating RESTful API services.
- Convert legacy code to new tech stack single-page web applications.
- You will be working with payment gateway, barcodes, QR codes, biometrics, integrating different hardware (printer, scanner, cash register, POS terminal, laundry and drycleaning machines, conveyor belt etc), map routing and distance algorithms.
What you can expect in the next 12 months
Within 1 month
- You should have acquired a good knowledge of the domain, product and process that we follow.
- Setup the dev environment and push your first small piece of code to production.
- You will start attending daily stand up.
- Dive into technology by pair-programming with your teammates and attending engineering training sessions designed and presented by your peers.
- Have a one-one chat with every member of the Quick Dry Cleaning team so you get to know everyone well and understand each other.
Within 3 months
- You'll start developing your first module all by yourself. (With some guidance)
- Write your first set of unit test cases and work with the quality engineer to set up functional testing workflows.
- Conduct your first review of a peer's code.
- Participate in several release planning sessions to get a deep understanding of the new features we're working on.
- Participate in your first production release cycle.
- Start providing support for bugs, issues, small improvements on production.
- Take over one tool (JIRA, Build Deployment, CI/CD, Git or any other)
Within 6 months
- You'll launch your first two or three modules to production.
- Take architectural and infrastructure decisions that will impact the entire product.
- Be comfortable navigating most of our stack and infrastructure.
- Be responsible for the planning, scoping, design, and implementation of new services.
Within 12 months
- You'll launch at least 3 to 4 core modules to production and completely own scaling for some more.
- Participate in interviewing and hiring, as a way to influence team growth.
- Mentor Ship - Should do code reviews for juniors, spend time and show a willingness to teach juniors, and share expertise with new team members.
- Collaborate with engineering, product, sales and customer success leadership to define priorities and set delivery goals.
- You will start owning an important workflow/ section of the product.
Required Candidate profile
What an ideal candidate looks like
- Strong knowledge of Computer Science fundamentals in object-oriented design, data structures, algorithm design, problem-solving, complexity analysis, databases, networking, and distributed systems.
- 3-4 years of experience with product development (.ASP.Net, C#.Net, WCF, MVC, SQL Server development applications, version control, CI/CD pipelines).
- Should have a strong online presence on different forums like stack overflow etc, Github etc.
- Excellent verbal and written skills. The ability to explain sophisticated architectures to engineers, product managers, and support & operation executives. You should also be able to write a proposal for your idea/solutions and take feedback from the team.
- Previous work experience at a product-based company or startup would be a bonus.
Personality traits we really admire
- Great attitude to ask questions, learn and suggest process improvements.
- Pays great attention to detail and helps identify edge cases.
- Gives equal importance to planning, coding, code reviews, documentation, and testing.
- Highly motivated and coming up with fresh ideas and perspectives to help us move towards our goals faster.
- Follows release cycles and absolute commitment to deadlines.
Role Software Developer
Industry Type IT Services & Consulting
Functional Area IT Software - Application Programming, Maintenance
Employment Type
Role Category Programming & Design
- Proven hands-on Software Development experience
- Proven working experience in Java development
- Hands on experience in designing and developing applications using Java EE platforms
- Object Oriented analysis and design using common design patterns.
- Profound insight of Java and JEE internals (Classloading, Memory Management, Transaction management etc)
- Excellent knowledge of Relational Databases, SQL and ORM technologies (JPA2, Hibernate)
- Experience in the Spring Framework
- Experience as a Sun Certified Java Developer
- 3+ year of experience in Development in JAVA technology.
- Strong Java Basics
- SpringBoot or Spring MVC
- Hands on experience on Relationl Databases (SQL query or Hibernate) + Mongo (JSON parsing)
- Proficient in REST API development
- Messaging Queue (RabitMQ or Kafka)
- Microservices
- Any Caching Mechanism
- Good at problem solving
Good to Have Skills:
- 3+ years of experience in using Java/J2EE tech stacks
- Good understanding of data structures and algorithms.
- Excellent analytical and problem solving skills.
- Ability to work in a fast paced internet start-up environment.
- Experience in technical mentorship/coaching is highly desirable.
- Understanding of AI/ML algorithms is a plus.
Skills:
- Expertise in Python 3 on AWS serverless
- Experience in AWS serverless stack Appsync, Lambda, Cognito, API Gateway, DynamoDB, Elasticsearch, SQS, S3, Code commit & Code Deploy.
- Proficient in modern microservice-based architectures and methodologies.
- Experience in a database technology, preferably No-SQL such as AWS DynamoDB.
- Build human-centric UX with us using technologies like React, TypeScript, GraphQL, and CSS-in-JS.
- Experience building data processing pipelines (SQS, Kinesis, DynamoDB, AWS Lambda, or similar)
- Deep technical hands-on experience developing in REST/JSON or SOAP/XML, combined with strong knowledge of concepts such as CORs (Cross Origins Resources), headers, security, JSON and http concept.
- Experience with Github and advanced Github features (good to have).
- Must have worked as a part of Agile Teams and DevOps practices such as continuous Integration tools (e.g. Jenkins), code repository, creating CI/CD pipelines is required.
Card91 is simplifying business payments by providing a plug and play issuance infrastructure
to businesses for domestic and cross-border payments. Our full stack platform enables
businesses to gain control and visibility into their payment flows, controlling the entire payment
lifecycle from onboarding, to issuance, to transaction and data reconciliation. The platform
aims to provide holistic solutions around payment issuance and distribution management. Our
deep focus in payments will help us in bringing new issuance formats as well as technologies
to businesses.
The company has been founded by seasoned technology entrepreneurs who have founded
successful companies like Myntra, Mastiff Technologies earlier. Headquartered in Bangalore,
with presence in Mumbai and NCR, Card91 aims to disrupt the payment infrastructure space
in the issuer-processor segment.
Position: Java Developers
We are building our core team which will be responsible for a highly scalable, always available
microservices based backend for payment processing. The developer will be involved with the
design, implementation, and execution from day one and build a robust, secure, and scalable
payment processing engine.
Roles & Responsibilities
● Individual Contributors talking full ownership of the micro services
● Design and Implement the micro services from scratch
● Be creative and always try to evaluate new strategies to execute faster
● Team player and always eager to teach new team members about the code, structure
and design
● Not afraid of bringing new designs (even languages) which will make the system
execute faster
Experience and Qualifications
● Having 2 - 5 years of experience
● Degree from a premier institute like IIT/NIT/BITS is desirable
● A strong expertise in Java/Spring/Spring Boot/Hibernate/Java
● Experience in developing highly scalable and reliable web applications, including
integration with internal and external systems.
● Experience building web services in REST with technologies like Spring Boot, Spring-
WS, spring MVC or JAX-RS
● Should be able to write test cases (unit and functional) to cover most of the code
● Experience in databases like MySQL and NoSQL db like Cassandra, etc.
● Experience with Cloud computing AWS & Microservices architecture
● Exposure to front end technologies like VueJS, ReactJS etc is an advantage
● Knowledge on Redis, ELK stack or Temporal BPM is a big plus
● Docker & Kubernetes experience is a big plus
● Previous experience of Fintech company is an added advantage
What’s on offer
● Vibrant, fun and rewarding culture that nurtures and promotes excellence
● Opportunities to learn and interact with payment industry leaders
● Competitive remuneration, group health insurance & PF
● Other office perks of being part of an early-stage Start-up
● Location: HSR Layout, Bangalore
- Design & build a highly scalable, robust backend architecture for our cloud services
- You will be part of a software development team for developing and enhancing SaaS applications.
- Take responsibility of entire module/feature set and develop, test, debug and maintain the application software throughout the product lifecycle
- Working with the Product Management Team to validate and plan new features
- Working with cross-functional teams to deliver stellar end user experience
- Research new technologies and tools that help in building the next generation of our services
- Test, debug and maintain the application software throughout the product lifecycle
Desired Candidate Profile
- Must have experience with web development in Java 8+, Spring/J2EE or similar frameworks and technologies. (Mandatory)
- Must have worked on REST API (Mandatory)
- Should be an enthusiast for writing clean, reusable code, willing to learn new things as a self-starter person
- 2+ years of strong relevant experience in developing Object-oriented technologies.
- Strong working experience with any of the following DBs - Postgres / MySQL / Oracle or MSSQL
Role: Java developer
Location: Gurgaon
Exp-3-5 yrs
Description:
- 3+ years of Coding and development experience
2. Hands on technical experience in must have technical requirements.
3. Strong working knowledge of Developing, Designing and implementing large scale enterprise applications.
4. Possess strong analytical skills, organizational skills, attention to detail, and excellent verbal and written communication skills.
5. Ability to establish and maintain effective working relationships with co-workers, managers and internal and/or external customers.
6. Knowledge of Agile process
REQUIRED TECHNICAL SKILL SET
Must have: AWS, Java, J2EE, Angular, React, Javascript, Spring MVC, Webservices (REST), Servlets, Hibernate
Nice to have: EXTJS, JBoss Drools Rules Engine, JQuery
RESPONSIBILITIES
1. Analyses and evaluates detailed business and technical requirements.
2. Codes and maintains complex components of information systems.
3. Develops and performs unit testing and fixes defects identified during testing and re-executes unit tests to validate results.
4. Ensure code quality by performing technical design and code reviews
5. Perform integration via Services/Batch with external and internal systems; develop presentation, business/application services and persistence components
6. Module level ownership and ensure that any development that occurs in that module is as per the agreed solution.
7. Profiling & Performance turning of Javaapplications
Design and develop robust services in coordination with front-end developers, ensuring the production and development of high-quality and well-tested code
Design, develop and test features alongside other technical departments
Lead the department in the design, development, deployment, and operation of services used by our users
Optimise APIs for any applications while creating and maintaining unit tests for new code as well as fix defects
Participate in the continuous integration of automated builds and deployments, ensuring that deliverables meet functional and design requirements and specifications of the site/software. Work with engineering leadership in solving and architecting solutions for challenging or complex site/software development issues.
Take initiatives in developing and maintaining integrations of best practices within the backend department










