
Job Title: Java Developer
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. - 5 to 14 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 clientfacing 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
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.
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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 clientfacing applications.
• Good development experience with RDBMS.
• Good knowledge of multi-threading and high-performance server-side development.
• working knowledge of Kafka
• Excellent problem solving and coding skills.
• Strong interpersonal, communication and analytical skills.
• Should have the ability to express their design ideas and thoughts.

Looking for Java Developer for Gurugram and Bangalore Location with 5+ years of experience win Java + Microservices , Multithreading , Spring boot , Kafka and any MQ Series
As a Backend Developer, you will be instrumental in designing and developing the business logic and backend systems for our core products. This role requires strong collaboration with frontend developers to deliver functional, high-performance APIs. You’ll also work on decrypting legacy enterprise systems, integrating with data sources, writing tests, building automation tools, and setting up CI pipelines.
We’re looking for someone who writes high-quality, efficient, well-documented code and isn’t afraid to challenge ideas to drive better outcomes.
✅ What You’ll Do:
- Design and develop robust business logic and backend architecture
- Build functional and performant APIs in collaboration with frontend teams
- Decrypt legacy enterprise software and integrate with data sources
- Write unit, integration, and performance tests
- Develop automation tools and CI/CD pipelines to streamline engineering workflows
- Ensure code is high-quality, efficient, and well-documented
- Actively challenge ideas and suggest improvements to avoid inefficient solutions
🧠 What We’re Looking For:
- 7+ years of backend development experience
- Strong expertise in Java, Spring Boot, and Microservices
- Proven experience building APIs for large-scale applications with performance optimization
- Solid understanding of OOP principles and clean architecture (e.g., SOLID)
- Hands-on experience with distributed systems (e.g., Kafka, ELK, Redis, Cassandra, or similar)
- Good communication skills – able to explain complex technical topics and align stakeholders
- Problem-solver mindset: Able to navigate complexity and provide clear solutions
- Bachelor's in Computer Science or related field is a plus, but not mandatory
- A team player who collaborates to build smart, efficient solutions fast
💡 Bonus Traits
- Experience in decrypting or modernizing legacy enterprise systems
- Familiarity with in-memory data stores and event-driven architectures


- Augmenting, improving, redesigning, and/or re-implementing Dolat's low-latency/high-throughput production trading environment, which collects data from and disseminates orders to exchanges around the world
- Optimizing this platform by using network and systems programming, as well as other advanced techniques
- Developing systems that provide easy access to historical market data and trading simulations
- Building risk-management and performance-tracking tools
- Shaping the future of Dolat through regular interviewing and infrequent campus recruiting trips
- Implementing domain-optimized data structures
- Learn and internalize the theories behind current trading system
- Participate in the design, architecture and implementation of automated trading systems
- Take ownership of system from design through implementation


Job Summary
- Expand the product to suit the needs of all kinds of travellers. From family travellers to hardcore backpackers and from free independent travellers to those who need a more guided approach to planning their trip.
- Launch across more countries. This means adding support for more geographies, things to do, weather, currencies and payments, transport and accommodation.
- Scale it up to serve millions of users a year, from across the globe. We are seeing decent growth, but it is time to up the game.
Responsibilities and Duties
How you'll add value:
- Own the architecture and design decisions that go into shaping our backend microservices
- Build and ship robust features.
- Work with web and mobile engineers to design and build APIs to power the traveler and influencer applications.
- Help us scale out to multiple geographies and serve millions of travelers
Required Experience, Skills and Qualifications
- An innate desire to grow. Both personally and with respect to the value you add to other people's lives.
- 4+ years industry experience working with golang/Django
- Sound understanding of CS fundamentals. We don't expect you to remember every algorithm by heart. But if you know how to find the most appropriate one for any given problem, let's talk.
- Personal projects that show an aptitude for technical excellence and product sense.
- Interest in contributing to open source projects
- Bonus points if you have an interest in the philosophy behind technologies. - You are intrigued by why did people develop certain technologies the way they did.
Benefits
- Work with a bunch of amazing people on a challenging problem.
- 1 backpacking trip each year to travel outside India. We don't allow you to travel, we WANT you to travel.
- Stock.
- We don't mind work from home/cafe/some random city in the world as long as your work and your team is not disrupted.
- We don't have a leave policy (there is a guideline for legal reasons) but you are free to take as much personal time as you need as long as you get your job done.
Job Type: Full-time
Salary: ₹2,000,000.00 to ₹3,000,000.00 /year


- Working on the scalability, maintainability and reliability of the products
- Building modular and composable system components
- Above all, delivering value to users
Desired Candidate Profile
What you need to have:- 4+ years of Software Development Experience
- Experience in building Web API based systems in Golang, Python, or Java backed by automated tests
- Experience in building modular monoliths or decoupled microservices
- Relational Data modelling skills, ability to think declaratively in plain SQL
- Experience with using Infrastructure as code tools like Terraform, Ansible etc.
- Experience with logging and monitoring tools
- Good understanding of Linux systems and Containers
- Understanding of CI/CD, software packaging and distribution
- Worked with Orchestrators like Kubernetes/Nomad/Docker Swarm
- A minimum of 3 years experience as a Technical Lead in Java., Strong experience in design and implementation of high performing and highly scalable websites/applications
- Strong experience in Spring MVC framework and experience in design patterns, unit testing etc..
- Strong experience in AWS services such as EC2, Lambda, S3, ECS, API Gateway and using tools such as Terraform, Ansible
- Strong experience in Endeca, ATG and BCC, Solr, any Headless CMS
- Considerable experience in databases such as SQL Server/Mongo DB is an added advantage
- Good experience in JavaScript frameworks such as Angular/React/VueJS is an added advantage
- Experience in Adobe AEM is an added advantage
- Creative problem-solving skills and ability to effectively communicate and translate feedback, needs and solutions
- Excellent verbal and written communication skills required
- Provide strategic thinking and leadership pertaining in cloud technologies and building scalable websites
- Provide technical leadership and guidance internally to the team and externally to management
- Communicate effectively across all levels of the organization
- Collaborate within and across teams with strong teamwork orientation
- Help maintain a culture of high quality
- Showcasing excellent work ethic and strong sense of ownership of end result
- Understand the structured software development methodologies including design, development and testing in an Agile environment
- Follow all security practices and identify areas and processes where performance and scalability can be improved
- Make and justify recommendations for improvement., Participate in development of solutions in cases of new technology direction and/or proof of concepts
- Should translate business needs into technical solutions with Strong analytical, conceptual and technical skills
- Support the evaluation, selection, design, development and maintenance of the platforms.


• Proficient in software development from inception to production releases using modern
programming languages ( Preferably Java, NodeJS, and Scala)
• Hands-on experience with cloud infrastructure, solution architecture on AWS or Azure
• Prior experience working as a Full-stack engineer building cloud-native, SaaS products.
• Expertise in programming and designing circuit breakers, the localized impact of failures,
service mesh, event sourcing, distributed data transactions, and eventual consistency.
• Proficient in designing and developing SAAS on Microservices architecture
• Proficient in building Fault tolerance, High availability, and Autoscaling for microservices
• Proficient in Data Modelling for distributed computing
• Deeps Hands-on experience on Microservices in Spring Boot and in large scale projects in
Spring Framework
• Fluency in cloud-native solution architecture; designing HA and Fault-Tolerant deployment
topologies for API Gateway, Kafka, and Spark clusters on cloud.
• Fluency in AWS, Azure, Serverless Functions in AWS or Azure and in Docker and Kubernetes
• Avid practitioner and coach of Test-Driven Development
• Deep understanding of modeling real-world scheduling and process problems into algorithms
running on memory and compute efficient data structures.
• We value Polyglot engineers a lot, hence experience in programming in more than one
language is a must, preferably one of Groovy, Scala, Python or Kotlin
• Excellent communication skills and collaboration temperament
• Articulation of technical matters to Business Stakeholders, and the ability to translate business
concerns into technical specifications.
• Proficiency in working with cross-functional team on refining initiatives to objective features.
Good To Have:
• Hands-on experience with Continuous Delivery and DevOps automation
• SRE and Observability implementation experience
• Refactoring Legacy products to microservices
Requirements:
- 3 -7 years of software development experience.
- Good grasp on programming fundamentals including OOP, Design Patterns and Data Structures.
- Excellent analytical, logical and problem-solving skills.
- Software Development Engineer.
- Good understanding of complexities involved in designing/developing large scale systems.
- Strong system design skills.
- Experience in technologies like Elasticsearch, Redis, Kafka etc.
- Good knowledge of relational and NoSQL databases.
- Familiarity with common machine learning algorithms. In-depth knowledge is a plus.
- Experience of working with big data technologies like Hadoop, Spark, Hive is a big plus.
- Ability to understand business requirements and take ownership of the work.
- Exhibit passion and enthusiasm for building and maintaining large scale platforms.
Out of which, an experience of 1 to 2 years in Spring Boot and Microservices is mandatory
Need to have an experience working on Digital Domain or E-Commerce Domain or Travel Domain
Strong experience with Java 8, Spring and Spring Boot, Spring MVC, Spring Data
Working experience on Microservices
Version Control: Git
Strong understanding of functional/reactive programing, OOP, design
Experience on Docker and Kubernetes.
SDLC: Working experience in Agile methodology
Strong written and verbal communication skills
Strong Interpersonal skills and Time Management skills
Immediate Joiners Preferred
Within maximum 30 days notice period can also apply
Currently remote working, however, post pandemic, candidates need to relocate to any of the location given above

