Java Developer at Wissen Technology · Hyderabad · 3 - 7 years · ₹8L - ₹28L / yr · Profitable · Posted 24 Feb 2026

Java GS 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. - 2- 7 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 Java GS 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

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
Similar jobs (10)
Experience in Core Java, Spring Boot.
• Experience in microservices.
• Extensive experience in developing enterprise-scale systems for global organization. Should possess good architectural knowledge and be aware of enterprise application design patterns.
• Should be able to analyze, design, develop and test complex, low-latency client-facing applications.
• Good development experience with RDBMS in SQL Server, Postgres, Oracle or DB2
• Good knowledge of multi-threading
• Basic working knowledge of Unix/Linux
• Excellent problem solving and coding skills in Java
• Strong interpersonal, communication and analytical skills.
• Should be able to express their design ideas and thoughts
JOB DESCRIPTION:
Location: Pune, Mumbai
Mode of Work : 3 days from Office
DSA(Collections, Hash maps, trees, Linkedlist and Arrays, etc), Core Oops concepts(Multithreading, Multi Processing, Polymorphism, Inheritance etc) Annotations in Spring and Spring boot, Java 8 Vital features, database Optimization, Microsevices and Rest API
- Design, develop, and maintain low-latency, high-performance enterprise applications using Core Java (Java 5.0 and above).
- Implement and integrate APIs using Spring Framework and Apache CXF.
- Build microservices-based architecture for scalable and distributed systems.
- Collaborate with cross-functional teams for high/low-level design, development, and deployment of software solutions.
- Optimize performance through efficient multithreading, memory management, and algorithm design.
- Ensure best coding practices, conduct code reviews, and perform unit/integration testing.
- Work with RDBMS (preferably Sybase) for backend data integration.
- Analyze complex business problems and deliver innovative technology solutions in the financial/trading domain.
- Work in Unix/Linux environments for deployment and troubleshooting.
Job Title - Senior Java Developer
Experience Required - 5 to 9 Years
Location - Bangalore (Work from Office)
Immediate joiners are preferred.
Job Description:
We are seeking a skilled Integration Developer with expertise in Apache Camel to design, develop, and implement scalable integration solutions. The ideal candidate will have a solid understanding of enterprise integration patterns, APIs, and cloud services.
Technical Expertise:
Strong hands-on experience with Apache Camel.
Proficiency in Java, Spring Framework, and Spring Boot.
In-depth knowledge of Enterprise Integration Patterns (EIPs).
Experience in building and consuming RESTful APIs and SOAP services.
Familiarity with message queues (e.g., ActiveMQ, RabbitMQ, Kafka).
Understanding of microservices architecture and cloud platforms (AWS, Azure, or GCP).
Roles and responsibilities:
Design and Develop Integration Solutions
Implement and manage enterprise integration patterns (EIPs)
API and Microservices Development
Collaboration and Requirement Analysis
Maintain Integration Pipelines
Documentation and Testing
Continuous Improvement
Java developer roles will vary greatly depending on companies and job positions. Here are some typical roles and responsibilities of java developers:
- Contribute to all stages of software development lifecycle
- Design, implement and maintain Java-based applications that can be high-volume and low-latency
- Analyze user requirements to define business objectives
- Envisioning system features and functionality
- Define application objectives and functionality
- Ensure application designs conform with business goals
- Develop and test software
- Identify and resolve any technical issues arising
- Create detailed design documentation
- Propose changes to current Java infrastructure
- Develop technical designs for application development
- Develop multimedia applications
- Write well designed, testable code
- Conducting software analysis, programming, testing, and debugging
- Manage Java and Java EE application development
- Develop documentation to help users
- Transforming requirements into stipulations
- Prepare and produce releases of software components
- Support continuous improvement, investigating alternatives and technologies, and presenting for architectural review
BASIC QUALIFICATIONS
- At least 8+ years of IT experience most of which will have been in helping the design and implementation of the software suite/module.
- 2+ years on any Cloud Platform (AWS, Azure, Google etc).
- Bachelor’s degree in Information Science / Information Technology, Computer Science, Engineering, Mathematics, Physics, or a related field.
- Strong verbal and written communication skills, with the ability to work effectively across internal and external organizations.
- Strong programming skills in Java.
- Strong hands-on experience in integrating multiple databases like Oracle, SQL Server, PostgreSQL etc.
- Deep hands-on experience in the design, development and deployment of business software at scale.
- Customer facing skills to represent AWS well within the customer’s environment and drive discussions with senior personnel regarding trade-offs, best practices, project management and risk mitigation
- Leading/Involved in highly-available and fault-tolerant enterprise and web-scale software applications.
- Experience in performance optimization techniques
- High end Troubleshooting and Communication skills.
- Proven experience with software development life cycle (SDLC) and agile/iterative methodologies required
PREFERRED QUALIFICATIONS
- Implementing experience with primary AWS services (EC2, ELB, RDS, Lambda, API Gateway Route53 & S3).
- AWS Solutions Architect Certified
- Experience in programming languages like Java/Python.
- Demonstrated ability to think strategically about business, product, and technical challenges
- Integration of AWS cloud services with on-premise technologies from Microsoft, IBM, Oracle, HP, SAP etc.
- Experience with IT compliance and risk management requirements (eg. security, privacy, SOX, HIPAA etc.).
- Extended travel to customer locations may be required to sell and deliver professional services as needed
•Design and develop distributed, scalable, high availability web services.
•Work independently completing small to Mid-sized projects while
managing competing priorities in a demanding production environment.
•you will be writing reusable and maintainable quality code.
What You'll Bring
•BS in CS (or equivalent) and 4+ years of hands-on software design and
development experience in building high-availability, scalable backend
systems.
•hands-on coding experience is a must.
•Expertise in working on Java technology stacks in Linux environment -
Java, Spring/ Hibernate, MVC frameworks, TestNG, JUnit.
•Expertise in Database Schema Design, performance efficiency, and SQL
working on leading RDBMS such as MySQL, Oracle, MSSQL, etc.
•Expertise in OOAP, Restful Web Services, and building scalable systems
Preferred Qualifications:
•Experience using Platforms such as Drools, Solr, Memcached, AKKA, Scala,
Kafka etc. is a plus
•Participation in and Contributions to Open-Source Software Development and contributions
- l IT experience delivering enterprise-scale applications or product implementations
- experience working as a technical lead.
- Working Experience in ISO20022, SWIFT, Remittance
- Language & Frameworks: Java, Spring Boot, Spring, Any ORM
1. Work experience between 3 years to 9 years in building large scale high user traffic consumer facing applications with desire to work in a fast paced startup.
2. Knowledge on reactive and asynchronous programming is preferable. If you have worked with coroutines, goroutines, high concurrency or optimized number of threads for processing on your backend server you could be a good fit.
3. Extremely proficient at writing performant, scalable and production ready code in Kotlin, Java (8 or above, comfortable with concepts like lambda, streams, multithreading etc), Elixir, Rust, or Golang. Should be familiar with static code analysis, code coverage and code reviews.
4. Experience with NoSQL DBs like MongoDB, Cassandra, Redis or Aerospike is required. Knowledge of graph DBs like Neo4j is preferred.
5. Strong in algorithms, problem solving and data structures.
6. Knowledge of TDD and experience with building applications integrated with CI-CD pipelines (automated build, tests and deployments).
7. Exposure to micro-services with good understanding of containers, kubernetes, logging, alerting and monitoring. Inter services communication. Should know how to handle multiple versions of APIs.
Primary Responsibilities:
- Principal Engineers are responsible for driving Technology and Engineering Best Practices in their respective teams.
- They should demonstrate a high level of ownership and accountability for their product and software systems.
- They are expected to go above and beyond their role by contributing in tools, processes and practices which bring operational efficiency and are aligned with business goals.
- They are expected to actively participate in development along with team members and create systems and modules which represent a working model of engineering best practices.
- They are expected to participate in code reviews, design reviews, architecture discussions.
- They are responsible for the Engineering metrics/health of their systems including strong alerting and monitoring mechanisms.
- They are expected to lead the adoption of best practices around coding, designing, performance of systems in a team.
Experience or Skills Required:
- B.Tech or Advanced degree in Computer Science with 6-12 years of industry experience in product based companies.
- Proficiency with Basic libraries for machine learning such as scikit-learn and pandas
- Experience in building solutions based on Linear Regression, Logistic Regression, K Nearest neighbor, SVM, Random Forest, Decision Trees.
- Strong experience with at least one of programming languages: Python, Java, Vertx, Golang
- Strong experience in building Server side reusable components based on Microservices or Distributed Architecture.
- Solid coding skills with ability to lead teams in identifying clearing tech debts for large scale code base.
- Good understanding & experience in improving performance of scalable and real time responsive applications.
- Excellent Problem Solving skills and an aptitude to approach problems from first principles and build solutions for those.
- Must have excellent communication (verbal & written), interpersonal, leadership, and problem solving skills.
- Must be able to work independently and enjoy working at a fast paced start-up environment
- Excellent Mentoring skills. Be the technical mentor to your team.
- Must be comfortable working in fuzzy environments where boundaries are not clearly defined.
Primary Duties
• Build a broad knowledge across various systems and processes via knowledge transfer and capture any missing information on the wiki
• Gather software requirements by talking to various stakeholders and document them
• Implement software solutions after discussing the requirements and taking direction from the Technical lead and talking to other colleagues within and outside the team
• Provide necessary effort and time estimates for tasks to aid scheduling and prioritization
• Provide necessary 3rd line support to the Operations teams including software fixes as needed
• Work on any BAU development activity including on-boarding new data sets and delivering new markets into the system
• Work with external vendors from time to time to gather necessary requirements for new data or changes to existing data specifications
• Maintain pro-active communication with relevant stakeholders and keep them updated on progress
General
- Any other duties commensurate with the post holder’s position and seniority; and
- All employees should understand that it is their personal responsibility to comply with all organisational, statutory and regulatory policies and procedures.
Experience, Knowledge & Skills
Essential
- 4+ years’ experience of programming in Java.
- 4+ years’ experience working with SQL including complex queries, stored procedures, views, database design and solid understanding of database concepts (preferably SQL Server)
- Experience of both Linux and Windows environments, scripting and tools
- Willing to carry out operational data tasks alongside developing new solutions
- Well organised with the ability to prioritise and manage multiple streams of work
- Excellent communication skills
Beneficial
- Experience working with Cloud environments (preferably AWS)
- Experience in handling financial data sets and familiarity with financial instruments (equities, futures, FX)
- Experience working with data pipelines and building ETL solutions
- Experience working with tools like Flink, Kafka and Tableau
Educational & Professional Qualifications
- Educated to degree (or equivalent) level or higher.
- A degree with mathematical and computing content (e.g. Computer Science, Maths, Physics)









