
Job Title: Java Backend Developer
Location: Bangalore
Experience: 3–6 years
Mode: Full-time
✨ Job Summary
We are looking for a skilled Java Backend Developer to join our engineering team. You will be responsible for building the backend services and APIs that power our web and mobile applications.
✅ Responsibilities:
- Design and develop RESTful APIs using Java and Spring Boot
- Write reusable, testable, and efficient backend code
- Integrate databases, caching layers, and data storage solutions
- Implement security and data protection best practices
- Monitor and optimize application performance
- Work with DevOps tools to manage builds and deployments
- Participate in code reviews and agile ceremonies
🧠 Required Skills:
- Strong programming experience in Java 8+
- Proficient in Spring Boot, Hibernate, JPA
- Hands-on with REST APIs, JSON, Postman
- Solid understanding of SQL and relational databases (MySQL/PostgreSQL)
- Experience with Maven/Gradle, Git, Jenkins
- Familiarity with Docker, Kubernetes, or AWS is a plus
- Understanding of OOP, design patterns, and microservice architecture
🎓 Qualifications:
- Bachelor's degree in Computer Science, Engineering, or a related field
- 3+ years of backend development experience
💼 Good to Have:
- Knowledge of NoSQL (MongoDB, Redis)
- Experience with CI/CD pipelines
- Familiarity with testing tools like JUnit or Mockito

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
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Job Role: We are seeking a skilled Java Developer to contribute to the development and enhancement renowned banking application, which supports automatic reconciliation and unified data reporting for their clients. This role involves working on high-impact enhancements, data pipeline integration, and platform modernization. The ideal candidate will be a quick learner, self-motivated, and able to ramp up quickly in a fast-paced environment.
Key Responsibilities:
Design, develop, and maintain Java-based applications using Java 17 and Spring Boot.
Implement and manage message routing using Apache Camel.
Develop and monitor data pipelines using Kafka.
Support and enhance existing cloud-native applications.
Work with OpenShift Container Platform (OCP 4) for container orchestration and deployments.
Utilize Jenkins for CI/CD pipeline automation and management.
Collaborate with cross-functional teams to integrate multiple data sources into a unified reporting platform.
Participate in code reviews, unit testing, and performance tuning.
Troubleshoot and resolve production issues in collaboration with operations teams.
Document development processes and system configurations.
Required Skills:
Strong proficiency in Java 17 and Spring Boot frameworks.
Hands-on experience with Apache Camel for message routing and transformation.
Solid experience in Kafka development and monitoring tools.
Good understanding of cloud pipeline architectures and deployment strategies.
Experience working with OpenShift (OCP 4).
Familiarity with Jenkins for CI/CD and automated deployments.
Understanding of cloud deployment platforms (AWS, Azure, or GCP preferred).
Strong analytical and debugging skills.
Ability to learn quickly and adapt to evolving project requirements.
Nice to Have:
Experience in financial services or transaction reporting platforms.
Familiarity with microservices architecture and containerization best practices.
Knowledge of monitoring tools (e.g., Prometheus, Grafana).
Mentoring teams to carry forward recognised and optimised solutions, building conducive environments for knowledge transfer and maintaining standards in terms of deliveries form a major part of responsibilities.
Responsibilities
- Design and develop robust scalable database systems
- Design, build and deploy internal applications to support our native technical ecosystem
- Collaborate with Subject-Matter experts to design data-driven modules for analysis
Qualifications
- Bachelor's or Master's degree in Computer Science, Information Systems, Engineering or equivalent
- 3-4 years of experience in Java
Skills
- Expertise in object-oriented programming concepts and data structures
- Strong knowledge of working with XMLs/Jsons
- Experience with large-scale distributed storage and database systems (MySQL, MongoDB, GraphDB)
- Good knowledge of indexing/search libraries like Lucene/Solr/Elasticsearch
- Exposure to Spring MVC architecture and RESTful APIs
- Well-versed with Agile methodology of SDLC
- Good to have: Knowledge of standard DevOps skills like Build tools (Maven/gradle), Continuous integration (Jenkins), Version Control (Github/Gitlab)
Key Responsibilities
● Evolving the architecture for performance and scalability.
● Design, develop and own components of a highly scalable, distributed web
services platform.
● End to end delivery of new features.
● Lead a team of software engineers and help create an environment of ownership
and learning.
● Constantly strive to improve software development process and team
productivity.
Technical Skills
● 6-10 years of relevant software development experience.
● Experience in developing scalable, fault-tolerant, distributed backend services.
● Exceptional proficiency in any 1 of the language - Java, RoR or Golang.
● Good experiences with databases and Schema design and strong RDMS
knowledge.
● Strong knowledge of Performance optimization and caching techniques.
● Fairly good understanding of AWS (or any equivalent) and a relational database.
● Experience with prevalent design patterns and advanced system designing.
Benefits
● This is an opportunity to work on a fairly complex set of systems and impro
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.
Key Responsibilities:
- Rewrite existing APIs in NodeJS.
- Remodel the APIs into Micro services-based architecture.
- Implement a caching layer wherever possible.
- Optimize the API for high performance and scalability.
- Write unit tests for API Testing.
- Automate the code testing and deployment process.
Skills Required:
- At least 2 years of experience developing Backends using NodeJS — should be well versed with its asynchronous nature & event loop, and know its quirks and workarounds.
- Excellent hands-on experience using MySQL or any other SQL Database.
- Good knowledge of MongoDB or any other NoSQL Database.
- Good knowledge of Redis, its data types, and their use cases.
- Experience with graph-based databases like GraphQL and Neo4j.
- Experience developing and deploying REST APIs.
- Good knowledge of Unit Testing and available Test Frameworks.
- Good understanding of advanced JS libraries and frameworks.
- Experience with Web sockets, Service Workers, and Web Push Notifications.
- Familiar with NodeJS profiling tools.
- Proficient understanding of code versioning tools such as Git.
- Good knowledge of creating and maintaining DevOps infrastructure on cloud platforms.
- Should be a fast learner and a go-getter — without any fear of trying out new things Preferences.
- Experience building a large scale social or location-based app.
location-mumbai
serving notice period
client- one of the big 4
We are scaling rapidly in user engagement (reached 150K+ daily transactions within 3 months of beta launch), and if you're looking to deal with scale, this is for you.
About Trago.in: We are a neo-trading platform where one can trade their opinions on real-time events across politics, Sports. We are building in a super-interesting category with a focus on things happening around you and giving the audience a platform to earn from opinions and knowledge.
We are a seed-funded company with marquee investors from across the globe and an amazing set of co-founders from the premier institutes of India.
To know more about us, please visit: www.trago.in
Responsibilities:
* Build the APIs and internal mechanisms of the Trago backend across all our services.
* Architect and guide building end-to-end systems optimized for speed and scale.
* Build and lead engineering teams to achieve product roadmap milestones.
* Oversee the research and development of new products and technologies.
* Be available for troubleshooting in case of backend emergencies.
Requirements:
* Bachelors in Computer Science or any Engineering domain with experience in Software Programming.
* 2-5 years of experience building large-scale software applications.
* Highly proficient with Java and knowledge of the many intricacies of Spring Boot.
* Proficient with MongoDB and Redis.
* Knowledge of Aerospike, and other databases would be a bonus. Good understanding of distributed systems (servers, databases, etc.).
* Positive and solution-oriented mindset and comfort working in a highly agile, intensely iterative software development environment.
What's in for you?
* Work directly with founders
* Freedom to experiment and get creative.
* Be Yourself, every day.
* Build for scale - We are building Trago with a mindset to scale to 100 mn+ customers in 3 years. We are presently doing 150K transactions a day, which we will scale by 100x in one year.
Solid understanding of OOPS concepts and design methodology - good to have Inheritance, aggregation, and composition
Experience with concepts of MVC, JDBC, and Restful API development
Familiarity with build tools such as Ant, Maven, Gradle, and Docker
Sprint BOOT/ MVC framework - Basics (understanding of various Spring Boot components), Spring Initializer, Spring Boot Starters, and Spring Boot Annotations & DevTools
REST and Microservices - Microservices Basics (Concepts, understanding of API Gateway, Service Registry, fault tolerance, load balancing, Config Server)
Creating database schemas that represent and support business processes, queries, and procedures
Proficient understanding of code versioning tools, such as (Git / Mercurial / SVN) and familiarity with Continuous integration and deployment
Job Description
- Contribute in all phases of the development lifecycle
- Understand/learn the existing applications
- Provide support on IT Applications to customers
- Prepare and produce build release
- Strive for continuous improvement, developing well designed and efficient code
- Keep up with changes in technology and propose solutions
- Ensure defect free deliveries by actively participating in quality assurance
Education & Job Qualification
- Good academic qualifications
- Experience in developing web applications using Java, Spring, Hibernate, DWR, JSP
- Knowledge in Oracle Database concepts
- Sound knowledge in the following is a must
o Hibernate
o Spring
o Oracle & MongoDb
o HTML & CSS
o Javascript
o Jquery
o Angular 4
o Node JS
Knowledge of Japer Reports will be an added advantage - Good communication skills and be a good listener
- Problem solving skills
- Willingness to learn and do all development activities including quality assurance
- Team player
1. Technical skills include Java/JDK 6 and above, web services SOAP, REST, Micro Webservice, XML Parsing and schema design skills, JDBC, ORM, Multi-Threading.
2. Hands-on experience in design (HLD/LLD) and design patterns and Design principles is mandatory.
3. Excellent communication and client handling skills are required.
4. Server-side component design, detailed technical design, development, implementation and maintenance
5. In depth knowledge of core java. Solid on coding fundamentals e.g. Object-Oriented design, data structures and dependency injection
6. Hands-on experience in widely used third party frameworks (e.g. Spring, Hibernate)
7. Experience with Java Script framework like EXTJS, Jquery , Angular etc.
8. Strong background Object Oriented analysis and design
9. Hands on experience with Databases technologies preferably MS SQL Server.
10.Knowledge of deployment platforms Jboss/ Wildfly/Tomcat.
11.Experience working in high performing development teams using Agile/Scrum methodologies and tools (eg.Agile,Jira)
12 Experience with automated code review tools and build process.
13.Experience in performance optimization by code optimization, profiling, detecting bottle neck and finding contended locks in system
14.Proven track record of being a successful developer and lead and mentor by accomplishing tasks on schedule with strong initiative, commitment to quality, team blending and leadership skills.
15.The candidate must be highly self-motivated confident and mature, well developed analytical and problem-solving skills with the aptitude to learn as well as a flexibility to adapt to change.
16. Candidate should have worked on end-to-end life cycle of the project (ideation to go-live)
The right candidate will be offered ESOPs as well in their compensation.








