
⚠️ Important Note (Please Read Before Applying):
- Only candidates with 5–8 years of relevant experience should apply.
- Freshers or candidates with less than 5 years of experience – please do not apply.
- Only immediate joiners or candidates currently serving notice will be considered.
- Strict NO for 30 / 60 / 90 days notice period.
Job Title: Java Developer (5–8 Years)
Location: Bangalore (Hybrid Mode)
Experience: 5 to 8 years
Joining: Immediate / Notice Serving Only
About the Role:
We are looking for passionate and highly skilled Java Developers to join our dynamic team in Bangalore. The ideal candidate will have strong expertise in Java, Spring Boot, Collections, Multithreading, and Data Structures & Algorithms (DSA), with proven problem-solving abilities.
Key Responsibilities:
- Design, develop, and maintain high-performance, scalable, and secure applications.
- Work with Spring Boot and related frameworks to build microservices-based solutions.
- Optimize code using Collections & Multithreading concepts for performance and reliability.
- Apply strong DSA and problem-solving skills to deliver efficient solutions.
- Collaborate with cross-functional teams to ensure timely delivery of high-quality software.
- Troubleshoot, debug, and resolve production issues efficiently.
Required Skills & Experience:
- 5–8 years of hands-on experience in Core Java and Spring Boot.
- Strong expertise in Collections, Multithreading, and Concurrency.
- Solid understanding of DSA, Algorithms, and System Design fundamentals.
- Experience in developing REST APIs and Microservices.
- Proficiency in writing clean, maintainable, and efficient code
- .Strong analytical and problem-solving skills.
Why Join Us?
- Opportunity to work on cutting-edge projects with modern architectures.
- Hybrid work setup in Bangalore.
- Fast-paced and growth-driven environment.

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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Location & Work Model:
- Position: Contract to hire
- Bangalore - Marathahalli;
- Work mode - Work from Office; all 5 days
- Looking for immediate joiners
Technical Requirements:
- Strong experience in Java Backend Development
- Proficiency in both SQL & NoSQL databases (e.g., MongoDB, PostgreSQL, MySQL)
- Basic knowledge of DevOps tools (CI/CD pipeline)
- Familiarity with cloud providers (AWS, GCP)
- Ability to quickly learn and adapt to emerging technologies, including AI-driven tools, and automation solutions
- Strong problem-solving mindset with an interest in leveraging AI and data-driven approaches for backend optimizations
Soft Skills & Mindset:
- Strong communication & articulation skills
- Structured thought process and a logical approach to problem-solving
- Interest & willingness to learn and adapt to new technologies
- Write maintainable/scalable/
efficient code. - Design and architect technical solutions for the business problems of a very large e-commerce portal.
- Work in a cross-functional team, collaborating with peers during the entire SDLC.
- Follow coding standards, unit-testing, code reviews etc.
- Follow release cycles and commitment to deadlines
- Experience level of 3 to 6 years of experience in very large scale applications.
- Strong problem-solving skills, OOPs, data structures and algorithms.
- Experience with distributed systems handling large amounts of data.
- Excellent coding skills in Java/J2EE.
- Very good understanding of Web Technologies.
- Very good understanding of any RDBMS and/or messaging.
- B Tech/BE in Computer Science or equivalent from a reputed college.


- Analyzing website and application requirements.
- Writing back-end code and building efficient PHP modules.
- Developing back-end portals with an optimized database.
- Troubleshooting application and code issues.
- Integrating data storage solutions.
- Responding to integration requests from front-end developers.
- Finalizing back-end features and testing web applications.
- Updating and altering application features to enhance performance.
- PHP Developer Requirements:
- Bachelor’s degree in computer science or a similar field.
- Knowledge of PHP web frameworks including Yii, Laravel, and CodeIgniter.
- Knowledge of front-end technologies including CSS3, JavaScript, and HTML5.
- Understanding of object-oriented PHP programming.
- Previous experience creating scalable applications.
- Proficient with code versioning tools including Git, Mercurial, CVS, and SVN.
- Familiarity with SQL/NoSQL databases.
- Ability to project manage.
- Good problem-solving skills.
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.
Responsibilities :
- Design and develop scalable, high performance, and reliable API driven services/applications in Java language that operate whole day.
- Produce high quality software that is unit tested, code reviewed, and checked in regularly for continuous integration.
- Interact with both business, financial research, and technical stakeholders to deliver high quality products and services that meets/exceeds business, customer, and technical requirements.
- Own products and code from cradle to grave including production quality/performance monitoring.
Required Skills :
- Experience building and running high performance enterprise applications developed in Java language.
- Hands on experience developing Java web applications built with modern standards-based APIs including Java based REST APIs and implementations.
- Experience in Java language APIs, Spring technologies, Hibernate, JDBC, RDBMS and NoSQL based data persistence.
- Experience developing solutions on AWS Cloud leveraging AWS Lambda, S3, DynamoDB, Cloud Formation, and other related AWS technologies.
- Solid understanding of Domain Modeling with Relational and Non-Relational Databases.
- Excellent debugging and problem-solving skills, including ability to diagnose and fix performance and scalability issues.
- Experience working in an agile methodology-based development environment.
- Excellent written and verbal communication skills.
- BS/B.Tech/M.Tech in Computer Science or a related field.
Share your resumes if this opportunity suits you.


Role- Software Development Engineer-2
As a Software Development Engineer at Amazon, you have industry-leading technical abilities and demonstrate breadth and depth of knowledge. You build software to deliver business impact, making smart technology choices. You work in a team and drive things forward.
Top Skills
- You write high quality, maintainable, and robust code, often in Java or C++ or C#
- You recognize and adopt best practices in software engineering: design, testing, version control, documentation, build, deployment, and operations.
- You have experience building scalable software systems that are high-performance, highly-available, highly transactional, low latency and massively distributed.
- Roles & Responsibilities
- You solve problems at their root, stepping back to understand the broader context.
- You develop pragmatic solutions and build flexible systems that balance engineering complexity and timely delivery, creating business impact.
- You understand a broad range of data structures and algorithms and apply them to deliver high-performing applications.
- You recognize and use design patterns to solve business problems.
- You understand how operating systems work, perform and scale.
- You continually align your work with Amazon’s business objectives and seek to deliver business value.
- You collaborate to ensure that decisions are based on the merit of the proposal, not the proposer.
- You proactively support knowledge-sharing and build good working relationships within the team and with others in Amazon.
- You communicate clearly with your team and with other groups and listen effectively.
Skills & Experience
- Bachelors or Masters in Computer Science or relevant technical field.
- Experience in software development and full product life-cycle.
- Excellent programming skills in any object-oriented programming languages - preferably Java, C/C++/C#, Perl, Python, or Ruby.
- Strong knowledge of data structures, algorithms, and designing for performance, scalability, and availability.
- Proficiency in SQL and data modeling.
About Amazon.com
“Many of the problems we face have no textbook solution, and so we-happily-invent new ones.” – Jeff Bezos
Amazon.com – a place where builders can build. We hire the world's brightest minds and offer them an environment in which they can invent and innovate to improve the experience for our customers. A Fortune 100 company based in Seattle, Washington, Amazon is the global leader in e-commerce. Amazon offers everything from books and electronics to apparel and diamond jewelry. We operate sites in Australia, Brazil, Canada, China, France, Germany, India, Italy, Japan, Mexico, Netherlands, Spain, United Kingdom and United States, and maintain dozens of fulfillment centers around the world which encompass more than 26 million square feet.
Technological innovation drives the growth of Amazon, offering our customers more selection, convenient shopping, and low prices. Amazon Web Services provides developers and small to large businesses access to the horizontally scalable state of the art cloud infrastructure like S3, EC2, AMI, CloudFront and SimpleDB, that powers Amazon.com. Developers can build any type of business on Amazon Web Services and scale their application with growing business needs.
We want you to help share and shape our mission to be Earth's most customer-centric company. Amazon's evolution from Web site to e-commerce partner to development platform is driven by the spirit of invention that is part of our DNA. We do this every day by inventing elegant and simple solutions to complex technical and business problems. We're making history and the good news is that we've only just begun.

About the Role
In this role, you'll work on design, implementation, and test for Dremio's system internals. If you want to be part of a fast-moving, fun, and accomplished team, we'd love to hear from you.
Responsibilities & ownership
- Own design, implementation, testing, and support of next-generation features related to scalability, reliability, robustness, usability, security, and performance of the product.
- Capable of working Individually and collaboratively with other engineers.
- Collaborate with support and field resources to make sure that customers are successful with Dremio
Requirements
- Fluency in Java and/or C++ with 3 to 5+ years of experience developing production level software
- Strong foundation in data structures, algorithms, multi-threaded and asynchronous patterns and their applications towards developing scalable systems
- Experience developing scalable distributed systems and deploying, scaling, and managing microservices
- Experience with containers and kubernetes for orchestration and container management in private and public clouds (AWS, Azure, Google Cloud) a plus
- Excellent communication skills and affinity for collaboration and teamwork
- Interested in and motivated to be part of a fast-moving startup with a fun and accomplished team
- Startup experience a plus
- B.S. or M.S in Computer Science or a related technical field or equivalent practical experience

Solid understanding of security and networking implementation and best practices.
Help guide and contribute to feature design and implementation to bring the product to the
next level.
Participate in continuous and iterative engineering cycles with emphasis on code quality,
supportability, scalability and performance.
Develop and review unit test cases to ensure comprehensive unit testing.Diagnose and fix product issues found internally or in the field.
Interface with Support to handle customer escalation issues.
Mentor junior members of the team in their assigned tasks and their technical skills
development.

Requires a bachelor's degree in area of specialty and experience in the field or in a related area. Familiar with standard concepts, practices, and procedures within a particular field. Relies on experience and judgment to plan and accomplish goals. Performs a variety of tasks. A degree of creativity and latitude is required. Typically reports to a supervisor or manager.
Designs, develops, and implements web-based Java applications to support business requirements. Follows approved life cycle methodologies, creates design documents, and performs program coding and testing. Resolves technical issues through debugging, research, and investigation.
Additional Job Details:
Strong in Java, Spring, Spring Boot, REST and developing MicroServices.
Knowledge or experience , Cassandra preferred
Knowledge or experience on Kafka
Good to have but not must
Good to know:
Reporting tools like Splunk/Grafana
Protobuf
Python/Ruby

