
Wissen Technology is now hiring for Java Developer with hands on experience in Core Java, multithreading, algorithms, data structure and SQL skills .
Required Skills:
- Experience - 5 to 10 years.
- 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.

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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About the Role
We are looking for a highly skilled Senior Java Developer with 8+ years of experience in designing, developing, and implementing enterprise-grade applications. The ideal candidate should have strong expertise in Java-based technologies along with practical experience in AI-powered applications, Generative AI, Machine Learning integrations, or AI frameworks. This role will involve working closely with cross-functional teams to build scalable, high-performance solutions leveraging modern AI technologies.
Technical Skills
- 8+ years of hands-on experience in Java development.
- Strong expertise in:
- Java 8/11/17
- Spring Boot
- Microservices Architecture
- RESTful APIs
- Hibernate/JPA
- Multithreading & Concurrency
- Experience with cloud platforms such as AWS, Azure, or GCP.
- Solid understanding of containerization technologies such as Docker and Kubernetes.
- Experience with CI/CD pipelines and DevOps practices.

JOB DETAILS:
* Job Title: Lead I - Software Engineering-Kotlin, Java, Spring Boot, Aws
* Industry: Global digital transformation solutions provide
* Salary: Best in Industry
* Experience: 5 -7 years
* Location: Trivandrum, Thiruvananthapuram
Role Proficiency:
Act creatively to develop applications and select appropriate technical options optimizing application development maintenance and performance by employing design patterns and reusing proven solutions account for others' developmental activities
Skill Examples:
- Explain and communicate the design / development to the customer
- Perform and evaluate test results against product specifications
- Break down complex problems into logical components
- Develop user interfaces business software components
- Use data models
- Estimate time and effort required for developing / debugging features / components
- Perform and evaluate test in the customer or target environment
- Make quick decisions on technical/project related challenges
- Manage a Team mentor and handle people related issues in team
- Maintain high motivation levels and positive dynamics in the team.
- Interface with other teams’ designers and other parallel practices
- Set goals for self and team. Provide feedback to team members
- Create and articulate impactful technical presentations
- Follow high level of business etiquette in emails and other business communication
- Drive conference calls with customers addressing customer questions
- Proactively ask for and offer help
- Ability to work under pressure determine dependencies risks facilitate planning; handling multiple tasks.
- Build confidence with customers by meeting the deliverables on time with quality.
- Estimate time and effort resources required for developing / debugging features / components
- Make on appropriate utilization of Software / Hardware’s.
- Strong analytical and problem-solving abilities
Knowledge Examples:
- Appropriate software programs / modules
- Functional and technical designing
- Programming languages – proficient in multiple skill clusters
- DBMS
- Operating Systems and software platforms
- Software Development Life Cycle
- Agile – Scrum or Kanban Methods
- Integrated development environment (IDE)
- Rapid application development (RAD)
- Modelling technology and languages
- Interface definition languages (IDL)
- Knowledge of customer domain and deep understanding of sub domain where problem is solved
Additional Comments:
We are seeking an experienced Senior Backend Engineer with strong expertise in Kotlin and Java to join our dynamic engineering team.
The ideal candidate will have a deep understanding of backend frameworks, cloud technologies, and scalable microservices architectures, with a passion for clean code, resilience, and system observability.
You will play a critical role in designing, developing, and maintaining core backend services that power our high-availability e-commerce and promotion platforms.
Key Responsibilities
Design, develop, and maintain backend services using Kotlin (JVM, Coroutines, Serialization) and Java.
Build robust microservices with Spring Boot and related Spring ecosystem components (Spring Cloud, Spring Security, Spring Kafka, Spring Data).
Implement efficient serialization/deserialization using Jackson and Kotlin Serialization. Develop, maintain, and execute automated tests using JUnit 5, Mockk, and ArchUnit to ensure code quality.
Work with Kafka Streams (Avro), Oracle SQL (JDBC, JPA), DynamoDB, and Redis for data storage and caching needs. Deploy and manage services in AWS environment leveraging DynamoDB, Lambdas, and IAM.
Implement CI/CD pipelines with GitLab CI to automate build, test, and deployment processes.
Containerize applications using Docker and integrate monitoring using Datadog for tracing, metrics, and dashboards.
Define and maintain infrastructure as code using Terraform for services including GitLab, Datadog, Kafka, and Optimizely.
Develop and maintain RESTful APIs with OpenAPI (Swagger) and JSON API standards.
Apply resilience patterns using Resilience4j to build fault-tolerant systems.
Adhere to architectural and design principles such as Domain-Driven Design (DDD), Object-Oriented Programming (OOP), and Contract Testing (Pact).
Collaborate with cross-functional teams in an Agile Scrum environment to deliver high-quality features.
Utilize feature flagging tools like Optimizely to enable controlled rollouts.
Mandatory Skills & Technologies Languages:
Kotlin (JVM, Coroutines, Serialization),
Java Frameworks: Spring Boot (Spring Cloud, Spring Security, Spring Kafka, Spring Data)
Serialization: Jackson, Kotlin Serialization
Testing: JUnit 5, Mockk, ArchUnit
Data: Kafka (Avro) Streams Oracle SQL (JDBC, JPA) DynamoDB (NoSQL) Redis (Caching)
Cloud: AWS (DynamoDB, Lambda, IAM)
CI/CD: GitLab CI Containers: Docker
Monitoring & Observability: Datadog (Tracing, Metrics, Dashboards, Monitors)
Infrastructure as Code: Terraform (GitLab, Datadog, Kafka, Optimizely)
API: OpenAPI (Swagger), REST API, JSON API
Resilience: Resilience4j
Architecture & Practices: Domain-Driven Design (DDD) Object-Oriented Programming (OOP) Contract Testing (Pact) Feature Flags (Optimizely)
Platforms: E-Commerce Platform (CommerceTools), Promotion Engine (Talon.One)
Methodologies: Scrum, Agile
Skills: Kotlin, Java, Spring Boot, Aws
Must-Haves
Kotlin (JVM, Coroutines, Serialization), Java, Spring Boot (Spring Cloud, Spring Security, Spring Kafka, Spring Data), AWS (DynamoDB, Lambda, IAM), Microservices Architecture
******
Notice period - 0 to 15 days only
Job stability is mandatory
Location: Trivandrum
Virtual Weekend Interview on 7th Feb 2026 - Saturday
Experience 8+ Yrs.
Bangalore work from office
1. Bachelor's degree or above, computer or related major, more than 5 years of Java EE development experience.
2. Have a solid foundation in JAVA, have strong OOP and OOD development ideas, and be familiar with various design patterns. Have strong coding skills, have business design experience, and be able to solve more complex technical problems.
3. Proficient in using mainstream JAVA open-source frameworks, such as Spring, Spring boot, Spring cloud, myBatis, etc.
4. Familiar with MySql, capable of database design and optimization, familiar with redis caching technology, familiar with message middleware, and ElasticSearch.
5. Familiar with distributed development and application scenarios of distributed components
6. Have some experience in concurrent processing and be familiar with performance optimization
7. Have strong learning ability, communication ability, teamwork ability and independent problem-solving ability, high sense of responsibility, and be able to withstand greater work pressure. Able to guide junior engineers and specialists to complete simple business development work.
Note: Kindly apply only if your open to Work from Office Bangalore and available to join immediate to 10 days.
Interested candidates connect @Bhavani P on the LinkedIn
or message your number/ id on the cut short chat.
About Company:
The company is a global leader in secure payments and trusted transactions. They are at the forefront of the digital revolution that is shaping new ways of paying, living, doing business and building relationships that pass on trust along the entire payments value chain, enabling sustainable economic growth. Their innovative solutions, rooted in a rock-solid technological base, are environmentally friendly, widely accessible and support social transformation.
Requirements:
1. Java 8+, J2EE,
2. Core Java- More hands on collections framework
3. JPA- Spring, Hibernate
4. Webservices (SOAP / Rest)
5. Knowldege on SQL & PLQL (Oracle/MySQL)
6. Expericne in Agile tools & processes
7. Good analytical & Communication skills
Roles and Responsibilities:
- Proven experience in Java 8, Spring Boot, Microservices and API
- Strong experience with Kafka, Kubernetes
- strong experience in using RDBMS (Mysql) and NoSQL.
- Experience working in Eclipse or Maven environments
- Hands-on experience in Unix and Shell scripting
- hands-on experience in fine-tuning application response and performance testing.
- experience in Web Services.
- Strong analysis and problem-solving skills
- Strong communication skills, both verbal and written
- Ability to work independently with limited supervision
- Proven ability to use own initiative to resolve issues
- Full ownership of projects and tasks
- Ability and willingness to work under pressure, on multiple concurrent tasks, and to deliver to agreed deadlines
- Eagerness to learn
- Strong team-working skills
As an SDE - III/IV (Backend), you will solve real-life complex problems and create compelling experiences for our users. In this role, you will ensure that the solutions and processes that we create are of the highest quality. And in doing so, you will champion a seamless app experience for all our users.
If you are confident about solving hard, interesting and UNIQUE problems, and creating an impact within an entrepreneurial environment, then you might just be our next SDE - III (Backend).
What will you do
- Collaborate with teams to develop and support the smooth 24x7 operation of our service.
- Create prototypes and proofs-of-concept for iterative development.
- Stay updated with emerging tech cultures and implement them in production systems.
- Develop scalable, long-term strategies to aid the company’s 10X growth.
- Ensure content quality and consistency of the brand.
- Reduce technical debt with quality coding
What you will need
- BTech degree in computer science or related field.
- 4-10 years of relevant work experience.
- Strong knowledge of any of the databases like MySQL, NoSQL, SQL Server, Oracle, PostgreSQL.
- Experience in Java and web technologies.
- Experience in scripting languages like Python, PHP, etc.
- Hands-on experience with systems that are asynchronous, RESTful and demand concurrency.
- Knowledge of best software engineering practices for all stages of software development life cycle
Responsibilities :
- Design and develop scalable, high performance, and reliable API driven services/applications in Java language that operate whole day.
- Produce high quality software that is unit tested, code reviewed, and checked in regularly for continuous integration.
- Interact with both business, financial research, and technical stakeholders to deliver high quality products and services that meets/exceeds business, customer, and technical requirements.
- Own products and code from cradle to grave including production quality/performance monitoring.
Required Skills :
- Experience building and running high performance enterprise applications developed in Java language.
- Hands on experience developing Java web applications built with modern standards-based APIs including Java based REST APIs and implementations.
- Experience in Java language APIs, Spring technologies, Hibernate, JDBC, RDBMS and NoSQL based data persistence.
- Experience developing solutions on AWS Cloud leveraging AWS Lambda, S3, DynamoDB, Cloud Formation, and other related AWS technologies.
- Solid understanding of Domain Modeling with Relational and Non-Relational Databases.
- Excellent debugging and problem-solving skills, including ability to diagnose and fix performance and scalability issues.
- Experience working in an agile methodology-based development environment.
- Excellent written and verbal communication skills.
- BS/B.Tech/M.Tech in Computer Science or a related field.
Share your resumes if this opportunity suits you.
Experience: 2.5 to 4 years
Location: Pune
About Studily: Optimizing education through personalized learning, Studily is here to empower educators and indulge learners across the globe. Studily uses the Flipped Learning Model to create a student-centric tool that applies artificial intelligence technology to prepare today's schooling system for tomorrow's Education Revolution.
Qualifications
- 2+ years' of experience in web development using NodeJs technologies.
- B.E., B. Tech., Msc IT, MCA etc in Software engineering/ Information technology.
Responsibilities
- Write reusable, testable, and efficient code following best practices (unit testing, source control, continuous integration, automation, design patterns, etc)
- Debug and refactoring of existing code, troubleshoot problems
- Collaborate with other developers, testers and other leads to enhance to quality product enhancements
- Take full responsibility for the quality of the code and test cases that are developed.
- Integration of user-facing elements developed by front-end developers with server-side logic.
- Provide task estimations and deliver quality code on time.
- Participate in architectural, design, and product sessions.
- Interact with different stakeholders to gather feedback and clarification.
- Research and apply new technologies and best practices.
- Should enjoy the experience of mentoring new hires on technical and process areas.
- Must have hands-on experience in building Microservices based software architecture. Must have Unix /Docker /Kubernetes /NOSQL experience
Requirements
- Knowledge of ReactJS is preferable.
- Extensive knowledge of JavaScript.
- Thorough understanding of databases such as MySQL, MongoDB or similar technologies
- In depth knowledge of working with Git.
- Experience with Restful APIs, Postman etc.
- Understanding of AWS/EC2, or other cloud services.
- Object-oriented application building experience in a professional Agile/Scrum environment.
- Good to have Unix /Docker/Kubernetes/NOSQL experience.
Skills
- Node.js
- AWS services
- Deployment
- Unix /Docker/Kubernetes/NOSQL
An ideal candidate should have well-rounded experience (5-10 years) in various technologies - backend/web development (Python/Django), DevOps, Android and iOS - or at least 2 out of the above
The person would be managing an expanding team of developers and guide the product development, along with contributing significantly to the core decisions of the company.
An entrepreneurial spirit, and the passion to make a difference in the healthcare ecosystem of the country is recommended.
The candidate will be well compensated with a combination of cash + equity, depending on experience and expertise.
- Strong Java software development experience – with a focus on Java 8 & 9
- Experience with NoSql databases – ideally with MongoDB
- Experience implementing REST apis – ideally with JAX-RS
- Experience with Reactive Programming – ideally with RxJava
- Experience implementing unit tests
Preferred Qualifications
- Experience developing applications in fintech or established financial institutions
- Experience with microservice architectures
- Experience developing systems that can scale to large amounts of data
- Experience working in Agile Scrum
- Experience working on a globally distributed team








