Java Developer

Job Title: Java Developer

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. - 4 to 14 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 clientfacing 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.

JOB DETAILS:

* Job Title: Java Lead-Java, MS, Kafka-TVM - Java (Core & Enterprise), Spring/Micronaut, Kafka

* Industry: Global Digital Transformation Solutions Provider

* Salary: Best in Industry

* Experience: 9 to 12 years

* Location: Trivandrum, Thiruvananthapuram

Job Description

Experience

• 9+ years of experience in Java-based backend application development
• Proven experience building and maintaining enterprise-grade, scalable applications
• Hands-on experience working with microservices and event-driven architectures
• Experience working in Agile and DevOps-driven development environments

Mandatory Skills

• Advanced proficiency in core Java and enterprise Java concepts
• Strong hands-on experience with Spring Framework and/or Micronaut for building scalable backend applications
• Strong expertise in SQL, including database design, query optimization, and performance tuning
• Hands-on experience with PostgreSQL or other relational database management systems
• Strong experience with Kafka or similar event-driven messaging and streaming platforms
• Practical knowledge of CI/CD pipelines using GitLab
• Experience with Jenkins for build automation and deployment processes
• Strong understanding of GitLab for source code management and DevOps workflows

Responsibilities

• Design, develop, and maintain robust, scalable, and high-performance backend solutions
• Develop and deploy microservices using Spring or Micronaut frameworks
• Implement and integrate event-driven systems using Kafka
• Optimize SQL queries and manage PostgreSQL databases for performance and reliability
• Build, implement, and maintain CI/CD pipelines using GitLab and Jenkins
• Collaborate with cross-functional teams including product, QA, and DevOps to deliver high-quality software solutions
• Ensure code quality through best practices, reviews, and automated testing

Good-to-Have Skills

• Strong problem-solving and analytical abilities
• Experience working with Agile development methodologies such as Scrum or Kanban
• Exposure to cloud platforms such as AWS, Azure, or GCP
• Familiarity with containerization and orchestration tools such as Docker or Kubernetes

Skills: java, spring boot, kafka development, cicd, postgresql, gitlab

Must-Haves

Java Backend (9+ years), Spring Framework/Micronaut, SQL/PostgreSQL, Kafka, CI/CD (GitLab/Jenkins)

Advanced proficiency in core Java and enterprise Java concepts

Strong hands-oacn experience with Spring Framework and/or Micronaut for building scalable backend applications

Strong expertise in SQL, including database design, query optimization, and performance tuning

Hands-on experience with PostgreSQL or other relational database management systems

Strong experience with Kafka or similar event-driven messaging and streaming platforms

Practical knowledge of CI/CD pipelines using GitLab

Experience with Jenkins for build automation and deployment processes

Strong understanding of GitLab for source code management and DevOps workflows

*******

Notice period - 0 to 15 days only

Job stability is mandatory

Location: only Trivandrum

F2F Interview on 21st Feb 2026

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 to 10 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   - Omniflow and Java Developer

Should have working experience between 6-8 years in Java development

Mandatory skills are good knowledge of object oriented concepts, experience of working on Spring boot application, should have worked on hibernate ORMS and candidate must have clear understanding of database concepts

Optional skills include knowledge of angular framework and postgreSQL database

Good to have knowledge of jBPM open source workflow

Qualifications

Master or Bachelor degree in Engineering/Computer Science /Information Technology

Additional Information

Skills and Competencies:
Strong documentation skills
Excellent communication skills, both written and verbal
Decision making and problem solving skills
Good organizational skills        

Role - Senior Backend Developer

About

It is an AI powered GTM intelligence platform for B2B companies. We aims to become the

Master OS on top of the company's entire martech stack. We are integrating multiple sales and

marketing products into an all-in-one platform, adding smart workflows and machine learning/LLM

based intelligence applications to increase qualified pipeline and funnel conversions. It is growing

fast, has an experienced founding team and is funded by top tier investors.

About the Role

We are seeking a Senior Java Microservices Developer who is a highly skilled professional responsible for designing, developing, and maintaining microservices-based applications using Java technologies.

The job description for a Senior Java Microservices Developer typically includes the following responsibilities and requirements:

Responsibilities:

Design and develop microservices-based applications using Java technologies such as Spring

Boot, Spring Cloud, and Hibernate.

Collaborate with cross-functional teams including product managers, architects, and DevOps to

develop and implement scalable and reliable microservices.

Develop and maintain high-quality code by adhering to coding standards, best practices, and

software development methodologies.

Participate in code reviews, bug fixing, and troubleshooting to ensure high-quality code and

maintain system stability.

Work with stakeholders to understand business requirements and translate them into technical

designs.

Conduct performance analysis and optimization of microservices to ensure optimal system

performance.

Continuously improve the codebase through refactoring, code optimization, and documentation

Requirements:

Bachelor's or Master's degree in Computer Science or a related field.

5+ years of experience in Java development, with a focus on microservices development.

Strong knowledge of Java technologies such as Spring Boot, Spring Cloud, Hibernate, and RESTful

API development.

Experience in designing and developing highly scalable and reliable microservices.

Experience with containerization technologies such as Docker and Kubernetes.

Experience in developing and maintaining CI/CD pipelines.

Strong understanding of database technologies, SQL, and NoSQL databases.

Experience with cloud technologies such as AWS or Azure.

Excellent communication and collaboration skills to work effectively with cross-functional teams.

A Senior Java Microservices Developer is a critical role in the development of microservices-based

applications, and they must have a deep understanding of Java technologies and microservices

architecture to be successful in the role

Exp - 4-6 years

Immediate joiners preferred

Location - Bangalore

Java + Spring boot 

Microservice 

MYSQL 

Design principal 

-Clear Communication: Practice clear and concise communication to effectively convey technical concepts.

- In-Depth Knowledge: Be prepared to provide detailed insights into experiences with specific technologies and tools, showcasing expertise.

- Specific Examples: Share real-world examples or projects where they have applied the mentioned technologies to demonstrate practical knowledge.

- Problem-Solving Skills: Be ready to discuss how they have solved real-world technical challenges in previous roles.

- Continuous Learning: Emphasize a commitment to continuous learning and staying updated with industry trends, especially in rapidly evolving fields like cloud technologies.

Purpose

 To design, develop, test, and maintain integrated software applications, systems, and platforms

 Responsible for ensuring that the software created is reliable, scalable, and secure

 The candidate should use his/her expertise to maintain enterprise wide upstream and downstream integration

solutions that help organizations achieve their business goals and provide value to end-users

Key Accountabilities

Responsibilities will include but will not be restricted to:

 Designing and developing solutions at middleware and integration layer

 Ensure the best standards are followed for integrating with multiple upstream and downstream

applications

 Documenting and Developing APIs which are fault tolerant, performance oriented and allow for publishing

across multiple sources

 Ensure management of the interfaces on the WSO2 EI platform

 Ensure continuous monitoring, troubleshooting, and debugging

 Ensuring that the integrations development is part of the overall CI/CD pipeline

 Working with stakeholders to ensure that integration solutions meet business requirements and are

delivered on time

Technical Requirements

 A Bachelor’s degree in Computer science, software engineering, or any other equivalent field

 Has 6+ years of experience in the field of software engineering or software development

 Experience with WSO2 middleware technologies like WSO2 Enterprise Integrator (EI), WSO2 API Manager,

and WSO2 Identity Server

 Experience in developing multiple type interfaces such as SOAP, REST, WebHooks, GraphQL and having

knowledge of working on changing one type to other

 Software development skills including proficiency in a modern programming language such as

Java/C++/Python/Golang.

 The ideal candidate should have worked on application development within an enterprise ecosystem.

 The person should also have the necessary knowledge to connect to systems like mail, DB, external

systems, or APIs etc.

 Ideally the person should have demonstrated creating common interfaces or adapters for interactions

between heterogeneous systems with least amount of code change or no code change at all on both the

integrating systems.

 The person needs to be hands on and should be able to write code and review the code of teammates.

Desired Personal Qualities and Behavior

 Excellent relationship management skills with the ability to engage, negotiate and manage key

stakeholders and suppliers.

 Excellent communication, interpersonal and influencing skills.

We're on a mission to make it possible for every person, team, and company to be able to tailor their software to solve any problem and take on any challenge. Computers may be our most powerful tools, but most of us can't build or modify the software we use on them every day. At Notion, we want to change this with focus, design, and craft.

We've been working on this together since 2016, and have customers like Pixar, Mitsubishi, Figma, Plaid, Match Group, and thousands more on this journey with us. Today, we're growing fast and excited for new teammates to join us who are the best at what they do. We're passionate about building a company as diverse and creative as the millions of people Notion reaches worldwide.

Millions of people use Notion — and this number is increasing every day. That means a million people trust us to deliver a fast, reliable, and secure experience, and we value this more than anything. We want to keep earning trust, while also continuing to amaze our users with the tools they can build in Notion. This is where you come in — to help us forge a performant and reliable path forward to the future.

• Write clean, secure, tested, and documented code.
• Design & enhance the Notion platform with new capabilities, as and when the need arises.
• Contribute to monitoring & scaling the architecture of the platform and the infrastructure.
• Write technical documentation, and contribute to determining internal processes.
• Contribute to recruiting of new backend employees

• 6+ years of experience building scalable platforms. 
• Good understanding of database (Relational Or Nosql) internals like transactions, indexes. Experience in schema design.
• 2+ years of experience working on the AWS platform, and acquaintance with technologies like Elastic Beanstalk, AWS Lambda, Elastic Load Balancer.
• Good understanding of docker internals.
• Good communication skills, good leadership skills, attention to detail, a sound understanding of algorithms, and object-oriented programming.

• You're proficient with any part of our technology stack: React, TypeScript, Node.js, Memcached, Postgres, Docker, and Elasticsearch.
• You've heard of computing pioneers like Ada Lovelace, Douglas Engelbart, Alan Kay, and others—and understand why we're big fans of their work.
• You have interests outside of technology, such as in art, history, or social sciences.

Our customers come from all walks of life and so do we. We hire great people from a wide variety of backgrounds, not just because it's the right thing to do, but because it makes our company stronger. If you share our values and our enthusiasm for small businesses, you will find a home at Notion.

Notion is proud to be an equal opportunity employer. We do not discriminate in hiring or any employment decision based on race, color, religion, national origin, age, sex (including pregnancy, childbirth, or related medical conditions), marital status, ancestry, physical or mental disability, genetic information, veteran status, gender identity or expression, sexual orientation, or other applicable legally protected characteristic. Notion considers qualified applicants with criminal histories, consistent with applicable federal, state and local law. Notion is also committed to providing reasonable accommodations for qualified individuals with disabilities and disabled veterans in our job application procedures. If you need assistance or an accommodation made due to a disability, please let your recruiter know.

Role & Responsibilities:

• Handle multiple products/modules simultaneously, lead the team in development and support
• Lead development teams
• Daily updates to customers and Product Managers/Delivery Managers
• Participate in design discussions
• Design and Architect small modules
• Effort estimations for modules, subsystems or use cases.
• Learn new skills and mentor the new team members
• Champion best practices within the team, including code reviews
  
  

Work Experience & Skills:

• B.E/B.Tech or any relevant Masters degree from reputed college.
• Strong 5+ years of experience in Java, J2EE, Spring IOC, Spring Annotations, Spring JDBC, Jquery, Java script, HTML 5 and CSS
• Strong experience in Postgres or any SQL technology
• Experience with working on Tomcat, Apache, JBoss or any similar application server
• Should have 3+ years of experience in leading team.
• Good experience in JSON / RESTful API / Web Services.
• Experience in working on Agile methodology using Scrum and sprints
• Experience in using build tools, Maven, GIT, Bugzilla or similar tools.
• Experience in cloud technologies, Microservices and frameworks such as AWS or GPC, container technologies like Docker is a plus.
• Ability to adapt to new development environments, changing business requirements and learning new systems highly desired
• Experience in Microservices, SpringBoot and Angular is a plus.
• Experience with tuning deployed applications for scalability and performance.
• Good knowledge of deployment and scripting on Linux/Unix servers
• Strong technical documentation skills.
• Good oral and written communication skills