
Job Title: Java Developer
Location: Chennai
Experience: 3+ Years
Employment Type: Full-time
Job Description:
We are looking for a skilled and passionate Java Developer with a strong foundation in Core Java and Object-Oriented Programming concepts. The ideal candidate should possess excellent communication skills and have hands-on experience with multi-threading, collections, databases, and backend development frameworks like Spring and Spring Boot. Exposure to cloud platforms and frontend technologies is a plus.
Key Responsibilities:
- Design, develop, and maintain scalable Java applications using Core Java and Spring Boot.
- Apply strong knowledge of Java Collections Framework and concurrent programming techniques including ExecutorService, ForkJoinPool, and other threading mechanisms.
- Optimize JVM performance and memory usage.
- Participate in all phases of the software development lifecycle: requirement gathering, design, development, testing, and deployment.
- Write clean, maintainable code following best practices, coding standards, and design patterns.
- Conduct code reviews, unit testing, and participate in peer programming.
- Collaborate effectively with team members and stakeholders to deliver high-quality solutions.
- Interact with databases like Oracle, Sybase, or SQL Server, with a strong understanding of views, triggers, indexing, and stored procedures.
Must-Have Skills:
- 3+ years of hands-on experience in Core Java
- Strong understanding of Collections, Multithreading, and Concurrency
- Proficient in Spring Framework, especially Spring Boot
- Deep understanding of Object-Oriented Design and Data Structures
- Strong experience in RDBMS (Sybase/Oracle/SQL Server) including indexing, replication, CLOB/BLOB types, views, and procedures
- Excellent written and verbal communication skills
Good to Have:
- Exposure to Microservices architecture
- Familiarity with NoSQL databases
- Knowledge or willingness to work on frontend technologies
- Experience working with public cloud platforms (AWS, Azure, GCP)
Soft Skills:
- Strong analytical and problem-solving skills
- Team player with a proactive attitude
- Ability to work independently and in a fast-paced environment
If you are passionate about Java development and want to work on cutting-edge technologies in a collaborative environment, we would love to hear from you.
Let me know if you want this converted into a company-branded format or with CTC/NP details added.

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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About Us:
MyOperator and Heyo are India’s leading conversational platforms empowering 40,000+ businesses with Call and WhatsApp-based engagement. We’re a product-led SaaS company scaling rapidly, and we’re looking for a skilled Software Developer to help build the next generation of scalable backend systems.
Role Overview:
We’re seeking a passionate Python Developer with strong experience in backend development and cloud infrastructure. This role involves building scalable microservices, integrating AI tools like LangChain/LLMs, and optimizing backend performance for high-growth B2B products.
Key Responsibilities:
- Develop robust backend services using Python, Django, and FastAPI
- Design and maintain scalable microservices architecture
- Integrate LangChain/LLMs into AI-powered features
- Write clean, tested, and maintainable code with pytest
- Manage and optimize databases (MySQL/Postgres)
- Deploy and monitor services on AWS
- Collaborate across teams to define APIs, data flows, and system architecture
Must-Have Skills:
- Python and Django
- MySQL or Postgres
- Microservices architecture
- AWS (EC2, RDS, Lambda, etc.)
- Unit testing using pytest
- LangChain or Large Language Models (LLM)
- Strong grasp of Data Structures & Algorithms
- AI coding assistant tools (e.g., Chat GPT & Gemini)
Good to Have:
- MongoDB or ElasticSearch
- Go or PHP
- FastAPI
- React, Bootstrap (basic frontend support)
- ETL pipelines, Jenkins, Terraform
Why Join Us?
- 100% Remote role with a collaborative team
- Work on AI-first, high-scale SaaS products
- Drive real impact in a fast-growing tech company
- Ownership and growth from day one


-
Proficient in .NET Framework, C#, ASP.NET, MVC, Web API, Entity Framework.
Strong design capabilities with SOLID principles using C#.
Working knowledge in WCF.
Database knowledge in SQL
Design, and deliver innovative software solutions in collaboration with Technology teams.
Develop high-quality production code
Experience in HTML, CSS, Javascript.
Experience in React / Angular or Typescript preferred



Responsibilities
- Preferred 1-3 years experience as Laravel Developer.
- Proven experience using PHP framework Laravel
- Troubleshooting issues in the implementation and debug builds.
- Writing server-side web application logic, back-end components, connect the application with other web services & support the front-end developers.
- Ability to perform UI/backend tests to optimize performance.
- Guide and Mentor other developers
- Hands-on experience in building and integrating API.
- Hands on experience in backend and frontend technologies.
Requirements:
- A degree in programming, computer science, or a related field.
- Excellent knowledge of PHP MVC architecture and OOP programming style.
- Proficiency in HTML and JavaScript.
- Knowledge of database design and querying using SQL.
- Practical experience using the MVC architecture.
- A portfolio of applications and programs to your name preferred.
- Must be able to fix bugs and errors and develop scalable apps
- Problem-solving skills and critical mind set.
- Ability to lead teams.
- Ability to work individually and handle clients.
Qualifications & Responsibilities
- Strong hands-on experience with Java; full-stack development
- Designs, codes, tests, debug, and documents software, and enhance existing components to ensure that software meets business needs
- Deploy and maintain Applications/Systems
- Work with other software engineers for one or more Agile scrum teams assigned to work on the project · Contribute to the design and architecture to enable secure, scalable, and maintainable software and should be able to clearly articulate the implications of design/architectural decisions, issues, and plans to technology leadership
- Develop reusable patterns and encourage innovation that will enhance team velocity · Collaborate on the design with other team members and product owners, both inside and outside the scrum team
- Estimate engineering work effort for the engineering team and effectively identify and prioritize the high impact tasks
- Conduct design and code reviews to ensure code developed meets coding best practices guidelines, unit testing, security, and scalability and maintainability guidelines
- Drive a quality mindset within the team
Skills:
- 2+ years of full Software Development Life Cycle experience
- 2+ years of experience working as a full-stack java developer
- 1+ years of web development with AngularJS
- Experience or familiarity with technologies such as WSDL, REST and/or SOAP web services, XML, JBoss, Adobe CQ5 DAM, HTML5, CSS3, Bootstrap, Hibernate, Spring.
• 4+ years of software development experience in Java 8. Knowledge of Java 9.
• Experience in developing micro services in Spring Boot or Node.js. Experience in security, transaction, Idempotency, log tracing,
distributed caching, monitoring and containerization requirements of Micro services. Experience in developing High Cohesion &
Loosely Coupled Micro Services
• Should have excellent acumen in Data Structures, Algorithms, problem-solving and Logical/Analytical skills. Thorough
understanding of OOPS concepts, Design principles and implementation of different type of Design patterns.
• Sound understanding of concepts like Exceptional handling, Serialization/Deserialization and Immutability concepts, etc. Good
fundamental knowledge in Enums, Collections, Annotations, Generics, Autoboxing, etc.
• Experience with Multithreading, Concurrent Package and Concurrent APIs
• Basic understanding of Java Memory Management (JMM) including garbage collections concepts.
• Experience in RDBMS or NO SQL databases and writing SQL queries (Joins, group by, aggregate functions, etc.)
• Hands-on experience with JMS. Hands-on experience in creating RESTful webservices and consuming webservices. Hands-on
experience with Spring.
• 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.
• 4+ years of software development experience in Java 8. Knowledge of Java9.
• Experience in developing micro services in Spring Boot or Node.js. Experience in security, transaction, Idempotency, log tracing,
distributed caching, monitoring and containerization requirements of Micro services. Experience in developing High Cohesion &
Loosely Coupled Micro Services
• Should have excellent acumen in Data Structures, Algorithms, problem-solving and Logical/Analytical skills. Thorough
understanding of OOPS concepts, Design principles and implementation of different type of Design patterns.
• Sound understanding of concepts like Exceptional handling, Serialization/Deserialization and Immutability concepts, etc. Good
fundamental knowledge in Enums, Collections, Annotations, Generics, Autoboxing, etc.
• Experience with Multithreading, Concurrent Package and Concurrent APIs
• Basic understanding of Java Memory Management (JMM) including garbage collections concepts.
• Experience in RDBMS or NO SQL databases and writing SQL queries (Joins, group by, aggregate functions, etc.)
• Hands-on experience with JMS. Hands-on experience in creating RESTful webservices and consuming webservices. Hands-on
experience with Spring.
• 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.
Additional information
• Gender-Neutral Policy
• 18 paid holidays throughout the year for NCR/BLR (22 For Mumbai)
• Generous parental leave and new parent transition program
• Flexible work arrangements
• Employee Assistance Programs to help you in wellness and well being
Skills Needed: Java,Spring,Springboot,Microservices
Should have hands-on experience with Java
Should have hands-on experience with technologies like spring & springboot
Should have hands-on experience with Microservices Architecture
Experience:2 Yrs to 5 Yrs
Notice Period: Immediate to 10 Days(Max)
Location: Bangalore
Work from Home till Pandemic End
- Build large scale enterprise applications.
- Responsible for providing deep technical expertise in designing and delivering end to end high performance, scalable & flexible solutions using Java and Open Stack technologies including Mobility/Responsive Web apps, APIs, application & data Integration, scalable databases, DevOps, Cloud Computing.
- He/ She would be also responsible to experiment, explore and demonstrate application of new technologies by means of conducting quick prototypes to solve business problems. Work with the direction from Solution Architect/ Enterprise Architect and co-create solutions with rest of the IT delivery teams
Our client was founded in 1999 by Mr. D.N. Prahlad (an early employee of Infosys), to create software products. Headquartered in Bangalore, we also have offices in the USA and France.
What We're Looking For
• An unwavering attention to detail and care towards your work. We double-check PRs they submit for review. Each variable name is thought through in detail; attention is paid to how decisions made today will affect the future.
• An absolute commitment towards doing the best work of your life, while helping others to do the same. We deliver with utmost focus on the job at hand. The team works towards crafting the best products for our users, and customers. Working as a team, we take on problems out of the original scope of their work if this results in a better end product.
• You should be comfortable working in an agile environment. You are also expected to
participate in code reviews—both receiving and offering them as needed. You are needed to communicate flexibly with your team—pitching in on designs, features, and ideas for the product, wherever needed.
What is Needed for the Role
• Strong command of Java & the JVM ecosystem
• Strong command of relational databases such as PostgreSQL, Microsoft SQL Server, Oracle, etc. (both with & without ORMs)
• Strong command of HTTP
• Strong command of HTML, CSS, and JavaScript
• Extensive experience with at least one JVM based web framework (SpringBoot, Micronaut, Play, Dropwizard, etc.)
• Experience with concurrency & parallelism on the JVM
• Experience with Docker, and cloud-native concepts
• Experience with Gradle
• A good grip on Git
What You Will Work On
The specific project you work on is decided based on the list of available projects at the time. While what you work on will change over time, we assure you that you’ll work with people who care deeply about their work and deliver with great attention to detail.
Your Growth
Our growth is driven by ordinary people who have extraordinary dreams and are bold enough to pursue them. Our leadership team, including our Managing Director, is comprised primarily of people who joined us as freshers. Through our process of continuous feedback, and regular 1-1 conversation, we believe in upskilling our team, and enabling each of them to grow along paths they find satisfying.
Your Level of Experience
We do not evaluate people based on the number of years of experience they have.
Instead, we look for skills that have been gained, regardless of how long they’ve, it has taken a person to gain those skills.
However, as a point of reference, historically, we have successfully recruited candidates for this role with 1-5 years of prior experience.
Evaluation Process
The evaluation process starts with a short phone conversation.
After that, the candidate will be required to take both a technical and writing test, which will be shared with them after the phone screen.
This will be followed by 1-3 interviews, over Google Meet. We will require candidates to be alone, in a quiet place (with no background noise). They must also have a fast & reliable internet connection. They will be required to take the call on a laptop with a camera, and have their technical test code ready for perusal. We recommend using Google Chrome to join the call, and strongly urge candidates to use headphones/earphones.
Please note that the evaluation process may take up to 6 hours

