
Job Description:
We are seeking a highly motivated and skilled Full Stack Java Developer with strong experience in backend and frontend development, cloud deployment, and modern DevOps practices. The ideal candidate will have a solid background in Java/J2EE technologies, hands-on experience in developing microservices on AWS, and a good understanding of CI/CD pipelines and monitoring tools.
Key Responsibilities:
- Design, develop, test, and maintain scalable web applications and microservices.
- Implement backend logic using Core Java, J2EE, Spring Boot, Spring Batch, JPA, and REST APIs.
- Build responsive UIs using React, HTML, CSS, and integrate them with backend services.
- Develop and deploy microservices using AWS services like ECS, EC2, S3, API Gateway, Aurora, ALB, and Route 53.
- Participate in Agile development processes, including sprint planning, stand-ups, and retrospectives.
- Write unit and integration tests using JUnit and Cucumber.
- Monitor application performance using APM tools and analyze logs using Splunk or similar tools.
- Implement CI/CD pipelines using Jenkins, Maven/Gradle, and Git/Bitbucket.
- Work with containerization and orchestration tools like Docker and Kubernetes.
- Collaborate with cross-functional teams using tools like JIRA and Confluence.
Required Skills & Experience:
- Strong hands-on experience in Java/J2EE application development.
- Proficiency in Spring frameworks (Spring Boot, Batch) and RESTful services.
- Frontend development experience with React, HTML, CSS.
- Solid experience with AWS cloud technologies and deployment practices.
- Experience in writing and maintaining automated tests with JUnit and Cucumber.
- Knowledge of APM tools and log analysis tools (e.g., Splunk).
- Familiarity with CI/CD pipelines and tools (Jenkins, Maven/Gradle, Git).
- Experience with Docker and Kubernetes.
- Excellent problem-solving, debugging, and analytical skills.
- Good communication skills and ability to work in Agile teams.
Preferred Qualifications:
- AWS certification is a plus.
- Experience with Amazon Aurora and API Gateway in production environments.
- Knowledge of SOA, messaging systems (e.g., MQ), and security best practices.

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Key Responsibility Areas:
- Design, build and deliver Enterprise software solutions.
- Write code with standards and conventions and follow best practices.
- Encourage and lead innovation and solid lifecycle processes.
- Collaborate with development teams on work definition, estimation and prioritization
- Lead and grow as a professional software engineer.
- Full ownership of product deliveries and mentoring junior team members.
- Preparing curriculum to train junior developers for Java Web Development
- Strong client interactions to provide excellent Quality of Service.
- Owning the code base and making sure all code is reviewed and is of very high quality.
- Write and modify coding conventions and standards documents for all development
Required Skills:
Technologies/Frameworks –
- Core Java, J2EE,
- Spring Core and Spring MVC, Sprint Boot, Spring Security,
- JDBC, Hibernate, RESTful APIs, SOAP WebServices
- Knowledge of JavaScript, JQuery, AJAX, HTML5, and CSS3, Angular is added advantage
- Junit or Mockito frameworks
- Maven, Git
- Knowledge Data Structures,
- SQL, MySQL
- Designing relational database schemas
- Basics of AWS, Cloud, Microservices
- Must have strong knowledge and experience in Agile based software development methodologies. Knowledge of an Agile tool like Jira.
- Strong knowledge of working in Integrations of 3rd party APIs and creating the new APIs.
- Must have good knowledge of creating Flow diagrams, UMLs and all the required documentations.
- Domain Preference
- BFSI, FinTech
Wissen Technology is hiring for Java Tech lead
Required:
- 8-10 years of industrial experience
- Java and related frameworks.
- Experience in Core Java 1.8 and above, Data Structures, OOPS, Multithreading, Microservices, Spring and Swift Payments
- Exposure on Fintech domain is mandatory
- Should have the ability to analyse, design, develop and test complex, low-latency client-facing applications.
- Good development experience with RDBMS
- Good knowledge of multi-threading and high volume server side development
- Excellent problem solving and coding skills in Java
- Strong interpersonal, communication and analytical skills.
Company Profile:
Company Name : Wissen Technology
Group of companies in India : Wissen Technology & Wissen Infotech
Work Location - Bangalore
Website : www.wissen.com
Wissen Thought leadership : https://www.wissen.com/articles/
LinkedIn: https://www.linkedin.com/company/wissen-technology
- Programming Language: Java, J2EE
- Framework: Spring MVC, Spring Security, Hibernate, JMS
- Strong knowledge in any one Relational Databases (Mysql / Oracle/ SQL Server).
- Operating System: Windows & Linux.
- Configuration Management: GIT
- Tools & Utilities: STS / Eclipse / IntelliJ / NetBeans.Web/Application Server: Jboss.
- Excellent hands-on experience and knowledge of SQL.
- Strong experience in Web services (SOAP and RESTFUL).
- Should have expertise in Design Patterns, Transactions, Multi-threading concepts.
- Experience using Maven.
- Knowledge of data structure
- Deliver entire application life cycle - concept, design, build and test complex web applications.
- Gather requirements around functionality and translate those requirements into elegant functional and technical solutions.
- Collaborate with cross-functional teams to define, design, and ship new features.
- Unit-test code for robustness, including corner cases, usability, and general reliability.
- Perform bug fixing and ensure acceptable application performance.
- Continuously upgrade knowledge on technology changes, evaluate impact to application, and implement changes to ensure minimal latency in application availability to users.
- Work closely with project/product managers while effectively working across multiple projects and delivering to deadlines.
- Mentor the team members on the nuances of technology and implement best practices within the team.
We are looking for an experienced NodeJS/ExpressJS/TypeScript developer. You will work on the most
critical software development team in a fast-growing data-centric software company. You will develop high performance, highly available REST and GraphQL APIs that will deliver data to our suite of web and mobile
apps.
Duties and Responsibilities
Software Development: You will work with the engineering lead to design and develop REST and
GraphQL APIs that will serve data from MongoDB and ElasticSearch.
Automated Test Scripts: You will write automated test scripts for all of your code. You will work with
the QA manager to determine optimal code coverage.
Code Reviews: You will assist in reviewing PRs raised by other team members. You will be
responsible for ensuring that the code satisfies the documented requirements, includes the necessary
automated tests and follows our documented coding standards and best practices.
API Support: API issues will be reported manually and automatically (via alerts) to a series of Slack
channels. You will monitor these channels and create Jira tickets to diagnose and fix these issues. You
will ensure that affected API consumers are informed regularly as to the status of the open issues.
API Documentation: You (and the rest of the API team) will be responsible for keeping the API
documentation up to date.
Skills and Qualifications
Bachelor's degree in computer science, information science, or similar.
Exceptional analytical and problem-solving skills.
Great organizational and time management skills.
Extensive knowledge of NodeJS libraries and frameworks.
REST APIs: 3+ years required.
GraphQL APIs: 1+ years desired.
ExpressJS or Fastify: 2+ years required
Advanced TypeScript: 1+ years required
NodeJS: 2+ years required
Node Streams: 1+ years desired
AWS High-Availability Clusters: 1+ years desired
MongoDB: 2+ years desired
Search Engines (ES or Solr): 2+ years desired
Big Data: 1+ years’ experience querying datasets with hundreds of millions of rows desired
Mocha/Chai: 1+ years desired
Bitbucket or GitHub: 1+ years required
Qualifications
Minimum qualifications
- MCA/BE/Btech/Mtech/ME degree in Computer Science or related technical field from a reputed institution.
- 2+ years of relevant work experience, including large systems software development experience or client application development.
- Experience programming in C++/Java and Oracle/Mysql.
- Strong analytical and problem solving skills.
- Sound Knowledge of SQL, relational databases, and other data storage solutions.
- Experience working in Unix/Linux environments.
- Fluency in English language.
Preferred qualifications
- MCA/ME in Computer Science or equivalent work experience
- 2+ years of relevant work experience, including programming Web and/or Non Web Java Applications, Oracle/MySql databases.
- Proficient in 1 or more scripting languages like Unix Shell.
- Spring framework in general (Spring MVC) .
- Good to have REST based web services.
- 1+ years of work experience in the Financial Services space (Brokerage / Capital markets / Investment Banking /Financial services).
- A strong foundation in computer science, with strong competencies in data structures, algorithms, and software design.
- Ability to perform under pressure in time-critical situations using sound judgment and professionalism.
- Ability to integrate into and work well within a global team.
- Very close to technology and looking at a technology centric career.
Key Skills Required :
- Proficiency in Python 3.x based web and backend development
- Solid understanding of Python concepts
- Strong experience in building web applications using Django
- Experience building REST APIs using DRF or Flask
- Experience with some form of Machine Learning (ML)
- Experience in using libraries such as Numpy and Pandas
- Hands on experience with RDBMS such as Postgres or MySQL including querying
- Comfort with Git repositories, branching and deployment using Git
- Working experience with Docker
- Basic working knowledge of ReactJs
- Experience in deploying Django applications to AWS,Digital Ocean or Heroku
Responsibilities :
- Understanding requirement and congributing to engineering solutions at a conceptual stage to provide the best possible solution to the task/challenge
- Building high quality code using coding standards based on the SRS/Documentation
- Building component based, maintainable, scalable and reusable backend libraries/modules.
- Building & documenting scalable APIs on the Open Spec standard
- Unit testing development modules and APIs
- Conducting code reviews to ensure that the highest quality standard are maintained
- Securing backend applications and APIs using industry best practices
- Troubleshooting issues and fixing bugs raised by the QA team efficiently.
- Optimizing code
- Building and deploying the applications
Role: Senior Software Engineer – Backend Location: Bangalore / Gurgaon / Pune
About the Role
The successful backend engineer will work closely and collaboratively with cross functional teams during all phases of the software development lifecycle.
The incumbent should be competent to provide quick solutions to problems and taking a product or a product’s component through the entire life cycle, optimize the space / time complexity and improve on usability and reliability.
What you’ll be doing:
- Bachelor's degree in Computer Science or related field from top notch colleges
- 4 + years of software development engineering.
- Understanding of fundamental design principles (including MVC).
- Good hands on in AWS scalable environment.
- Experience with different RDBMS and No SQL databases like MySQL, mongo, etc.
- Experience in designing scalable micro-services required.
- Strong knowledge of CS fundamentals including data structures, algorithm design and complexity analysis.
- Proficiency in one language that emphasizes class abstractions (for e.g. Java) and have coded in it for at least 4 years.
- Excellent communication, analytical and problem solving skills.
- Strong organizational skills and the ability to prioritize and work with clients with great efficiency.
- Excellent written and oral communication and presentation skills and the ability to express thoughts logically and succinctly.
- Open minded, Team builder, Good communicator and ability to lead and inspire teams.
- Demonstrated ability to achieve stretch goals in a highly innovative and fast paced environment.
- Experience in dealing with ambiguous/undefined problems; ability to think abstractly
What are we looking for?
- 4 to 10 years of hands on design / development experience.
- Tech / M.Tech Computer Science or equivalent field from a premier institutes.
- Proficient in Java OR C/C++, data structures, algorithms and OO design / design patterns.
- Strong understanding of Computer Science fundamentals.
- Technical depth in OS, computer architecture and OS internals.
- Ability to write scalable and maintainable code.
- Self-starter and goal-oriented with strong analytical and problem-solving skills.
- Must be able to work cooperatively within a strong diverse technical community to expedite development tasks.
- Experience in Machine Learning is a plus
PS: Code review and team leading expereince is a pluys for Tech Lead role
What we offer
- Competitive salary and excellent benefits, in a diverse working environment with inspiring and hardworking colleagues
- A positive, get-things-done workplace.
- An inclusive environment that ensures we listen to a diverse range of voices when making decisions.
- Ability to learn cutting edge concepts and innovation in an agile start-up environment with a global scale.
- A flexible working environment where you can drive your outcomes.
About us
At PayU, we are a global fintech investor and our vision is to build a world without financial borders where everyone can prosper. We give people in high growth markets the financial services and products they need to thrive. Our expertise in 18+ high-growth markets enables us to extend the reach of financial services. This drives everything we do, from investing in technology entrepreneurs to offering credit to underserved individuals, to helping merchants buy, sell, and operate online. Being part of Prosus, one of the largest technology investors in the world, gives us the presence and expertise to make a real impact. Find out more at www.payu.com
Our Commitment to Building A Diverse and Inclusive Workforce
As a global and multi-cultural organization with varied ethnicities thriving across locations, we realize that our responsibility towards fulfilling the D&I commitment is huge. Therefore, we continuously strive to create a diverse, inclusive, and safe environment, for all our people, communities, and customers. Our leaders are committed to create an inclusive work culture which enables transparency, flexibility, and unbiased attention to every PayUneer so they can succeed, irrespective of gender, color, or personal faith. An environment where every person feels they belong, that they are listened to, and where they are empowered to speak up. At PayU we have zero tolerance towards any form of prejudice whether a specific race, ethnicity, or of persons with disabilities, or the LGBTQ communities.

You Will:
- Lead, coach and mentor a team of 8-10 engineers so they all learn, grow, and succeed.
- Plan and prioritize work for your team, including collaborating with cross border teams.
- Provide oversight and accountability for technical decisions.
- Create an inclusive environment that attracts and retains high-performing engineers.
- You will collaborate with Developers, Program Managers, QA and Devops Engineers in an agile development environment.
- Constantly learn and grow as an engineer and an engineering leader.
- Demonstrate a passion for customers and technology.
You must have:
- Experience in the design, development, and deployment of large-scale enterprise applications with multiple tiers
- Exposure on agile test-driven development for robustness, usability, reliability, security and performance.
- Strong technical aptitude for any programming language, preferred, Core JAVA and Spring Boot and other Spring libraries, Eureka, Hystrix etc.
- Experience of creating architecture or developing web services using Open source technologies and to integrate applications with databases such as Oracle, MySQL, MongoDB, or Cassandra
- Solid understanding of OOPS, algorithms and data structures.
- Experience on Kafka / Scala / Storm / Elastic Search and Web Services like RESTful.
- Experience in building highly scalable distributed systems
- Extensive experience with version control systems (Git is preferred) and issue tracking systems (JIRA is preferred)
Big Pluses if you:
- Have a strong focus on business outcomes
- Are comfortable with collaboration, open communication and reaching across functional borders
- Are self-motivated and can get things done
- Have the ability to communicate and defend your ideas clearly
- Have a strong knowledge of threading, concurrency, scaling, and high availability.
- Have a desire to build products that users love
- Stay current with new and evolving technologies via formal training and self-directed education







