
Experience: 3 to 5
Location: Bangalore
Wissen Technology is now hiring for a Senior 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. - 3 to 5 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 Us:
At Wissen Technology, we deliver niche, custom-built products that solve complex business challenges across industries worldwide.
Founded in 2015, our core philosophy is built around a strong product engineering mindset—ensuring every solution is architected and delivered right the first time. Our commitment to excellence translates into delivering 2X impact compared to traditional service providers. How do we achieve this? Through a combination of deep domain knowledge, cutting-edge technology expertise, and a relentless focus on quality.
We don’t just meet expectations—we exceed them by ensuring faster time-to-market, reduced rework, and greater alignment with client objectives. We have a proven track record of building mission-critical systems across industries, including financial services, healthcare, retail, manufacturing, and more.
Wissen stands apart through its unique delivery models. Our outcome-based projects ensure predictable costs and timelines, while our agile pods provide clients the flexibility to adapt to their evolving business needs. Whether it’s AI/ML for unstructured data processing, cloud enablement, or data engineering, Wissen leverages its thought leadership and technology prowess to drive superior business outcomes. Our success is powered by top-tier talent. Our proprietary Interview Ninja platform ensures we hire the best, building high-performing teams that deliver unmatched results.
Today, Wissen Technology has a global footprint with 2200+ employees across offices in the US, UK, UAE, India, and Australia. Our mission is clear: to be the partner of choice for building world-class custom products that deliver exceptional impact—the first time, every time.
Website : www.wissen.com

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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JOB DESCRIPTION:
Location: 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.
Required Skills & Experience:
- 3– 7 years of strong hands-on experience in Core Java, Spring boot, microservices, data structures.
- Deep understanding of Object-Oriented Programming (OOP), data structures, algorithms, and design patterns.
- Proven experience with Spring, CXF, and REST/SOAP web services.
- Solid understanding of microservices architecture and distributed systems.
- Experience working with Sybase or other relational databases.
- Expertise in multithreading, concurrency, and high-throughput server-side development.
- Exposure to capital markets, sales & trading platforms, or similar financial services applications.
- Good working knowledge of Unix/Linux environments.
- Experience in solution architecture and design documentation is a strong plus.
- Strong problem-solving skills, analytical thinking, and a proactive attitude.
- Excellent communication and interpersonal skills to work effectively with global teams.
Preferred Qualifications:
- Bachelor’s or Master’s degree in Computer Science, Engineering, or related field.
- Previous experience in investment banking, capital markets, or financial technology domains.
Pickyourtrail (PYT) is an expert co-creator of super hit customised holidays. We are the perfect partner to the ‘designated travel planner/s’ of every group - big or small. Our service, customisation and expertise help us deliver super hit holidays and make the planner the hero of the holiday.
PickYourTrail is a technology-driven travel company building personalized, end-to-end travel experiences. Our platform powers dynamic itinerary creation, real-time pricing, booking orchestration, and post-booking workflows at scale. We operate in a high-throughput, real-time environment where backend systems are critical to business success.
What are we looking for in you?
You are enthusiastic about developing highly scalable, foolproof, end-to-end quality software. You have worked on api integrations, have a good understanding of api docs, SOAP, REST, rate limiter and caching. You are very passionate about data structures and algorithms. You are flexible in working with multidisciplinary teams and you push your teammates to their limits & ensure that the work is done. You consider AI as your friend and use them in all facets to augment your work, as your pair programmer, code reviewer and design philosopher. If you feel we are talking about you, contact us asap.
Who will you work with?
Being a part of a small team of backend engineers, you get to solve a wide range of problems in the travel space. Be it feature discussion, solution design, development, dev testing, deployment, enhancement or maintenance, you get to experience everything.
What's in it for you?
- Opportunity to contribute and solve interesting problems in the travel space.
- Solve for scalability, availability and performance along with functional integrations.
- Freedom to explore solutions rather than getting tied down by rigid standards.
- Work with some of the best techies in the industry
- An environment where Attitude is higher than Skill and performance scores over politics
- Take the product to the next level that has an impact on the end customer
What you'll bring to the team?
- Good understanding of data structures and algorithms
- Good experience in System & Solution design.
- Working knowledge of Java, Web Services, SOAP, REST and Spring Boot.
- Experience working with coding assistants like co-pilot, Claude desktop etc.
- Knowledge of GIT version control
- Good knowledge of any database (MongoDB, PostgreSQL, MySQL, Oracle)
- Knowledge of Unit testing is a must
- Fair debugging skills
Position = Java Developer
We are looking forward to hire a committed Java Developer with experience in building high performing, scalable, enterprise-grade applications. You will be part of our Engineering team that works on mission-critical applications. You will be managing Java/Java EE application development while providing expertise in the full software development lifecycle, from concept and design to testing.
You are required to:
Contributing in all phases of the development lifecycle.
Write well designed, testable & efficient code.
Ensure designs are in compliance with specifications.
Prepare and produce releases of software components.
Support continuous improvement by investigating alternatives and technologies and presenting these for architectural review.
Technical Skills required
Java, Springboot, Microservices, Data structures & Algorithms, MySQL, NoSQL, Mongodb and Hibernate.
OUR CURRENT STACK
Backend: Spring (JAVA), Laravel (PHP), MySQL, NoSQL, NGINX Plus.
Frontend: Angular 5+ Ngrx/store 5
Infrastructure: Google cloud platform (App engine, CloudSQL, BigQuery, PubSub, Firebase Hosting), Scrapy Cloud, Pusher.io (websockets), Getstream.io, Filestack, Postmark app, AS2 Gateway, Google Cloud Endpoints Framework, MongoDB, Algolia, Memcache
Tools: Gitlab, Postman app, JIRA. Wondering what your Responsibilities would be? Technical Skills required O
You are where our search ends, if you hold:
B. Tech/ M. Tech or corresponding degree
Experience in the same role of almost 1-6 years
Experience with connecting backend and frontend services.
Exposure to consuming data through different interfaces (Web API's/Socket/ REST/ RESTFUL/ JSON/ XML).
Proficiency in Data Structures and Algorithms.
Understanding of web markup, including HTML 5 CSS.
Understanding of client-side scripting and JavaScript frameworks.
Ability to write clean, reusable and well documented code.
Proficient understanding of code versioning tools, such as Git.
Knowledge of API authentication techniques (Token, JWT, OAuth2) - desirable but not mandatory. (Experience with API Design will be a plus)
Fair spoken and written English Flexibility - Things change around here. FAST!
Other Inter-personal skills like self-motivation, persistency, patience and eagerness to learn and work independently.
Roles and Responsibilities;-
- Include managing Java/Java EE application development while providing expertise in the full software development lifecycle, from concept and design to testing.
- Designing, developing and delivering high-volume, low-latency applications for mission-critical systems
Framework required – spring boot, Hibernate
Skills - Should have knowledge of JPA, js, Ajax

Job brief
We are looking for a Java Developer with experience in building high-performing, scalable, enterprise-grade applications.
You will be part of a talented software team that works on mission-critical applications. Java developer roles and responsibilities include managing Java/Java EE application development while providing expertise in the full software development lifecycle, from concept and design to testing.
Java developer responsibilities include designing, developing and delivering high-volume, low-latency applications for mission-critical systems.
Responsibilities
- Contribute in all phases of the development lifecycle
- Write well designed, testable, efficient code
- Ensure designs are in compliance with specifications
- Prepare and produce releases of software components
- Support continuous improvement by investigating alternatives and technologies and presenting these for architectural review
Requirements and skills
- BS/MS degree in Computer Science, Engineering or a related subject
- Proven hands-on Software Development experience (Microservices & Springboot)
- Proven working experience in Java development
- Hands on experience in designing and developing applications using Java EE platforms
- Object Oriented analysis and design using common design patterns.
- Excellent knowledge of Relational Databases, SQL and ORM technologies (JPA2, Hibernate)
- Experience in the Spring Framework
- Experience in developing web applications using at least one popular web framework (Spring MVC)
- Experience with test-driven development
Basic Qualifications
- Solid knowledge of algorithms/data structures is a must
- Strong Java software development experience – with a focus on Java 8 & 9
- Experience with NoSql databases – ideally with MongoDB
- Experience implementing REST apis – ideally with JAX-RS
- Experience with Reactive Programming – ideally with RxJava
- Experience implementing unit tests
Preferred Qualifications
- Experience developing applications in fintech or established financial institutions
- Experience with microservice architectures
- Experience developing systems that can scale to large amounts of data
- Experience working in Agile Scrum
- Experience working on a globally distributed team
Candidates should have worked with Startups (IT Product Firms)
Should be from B2C Firms/Product/SaaS Firms
Key Skills: Python, Golang, Java, Distributed Systems, Cloud, Microservices Architecture, MVC, Design Patterns, Data Structure, Algorithms
Your Experience Across The Years in the Roles You’ve Played
- 6+ years of technology experience (at least 2 years in direct engineering management)
- Managing a 5-15 member engineering team in an agile product org
- Track record of collaborative working with multiple stakeholders
- Planning and analysis with effective communication skills
You’ll Be Improving & Responsible For
- Our products engineering team that works on initiatives fuelling the growth of our recent health retail insurance products
- Collaboration across cross-functional stakeholders to ensure delivery timelines are met
- Implementing product engineering best practices, and evangelizing them within the org
- Engineering management with a strong sense of ownership
- Problem solving with a clear and analytical approach and organized work habits
- Technological innovation in agile product engineering scenarios
- Product and business management principles and metrics
Coding in Java8, Spring, Microservices, WebFlux/Reactive Programing, Rest services, Kafka, PCF, Azure, Spring Cloud Config and NoSQL technologies.
Solve technical problems using cutting-edge technologies and best practices.
Ensure code meets the required development standards and is optimized for performance.
Unit testing for each line of new code introduced (JUnit/Mockito)
Peer code review process using GIT pull requests and Crucible (for SVN)
Propose multiple solutions to a problem, show how one option is better than another.
Ensure all aspects of technical design are correctly incorporated.
Contribute in research and implementing POCs as required.
Collaborating with onsite team in scrum ceremonies.
Who you are:
Hands on experience on Java/J2EE programming, especially on Java 8 features
Experience using latest frameworks like Spring, Spring Boot, Spring Rest, Spring Cloud Config and Webflux.
Experience in Microservices architecture & development
Experience with Test Driven Development
Experience with SQL on any of the RDBMS Oracle, PostgreSQL, My SQL
Exposure to NoSQL DB is added advantage, preferred MongoDb / Cassandra
Experience with any of the ORM frameworks Hibernate/iBatis, JDBC, JPA
Exposure to JMS Kafka, IBM MQ or Active MQ is good to have
Experience with JUNIT and any of the mocking frameworks Mockito, EasyMock, JMock
with hands on any one of the cloud platforms like PCF, Azure
Use of code repository tools like SVN, GIT
Exposure to any of the build and deployment tools like Gradle, Maven, Ant
Experience in CI/CD pipeline such as JENKINS
Experience using different design patterns, especially GoF, J2EE and Integration design patterns
Exposure to performance testing using JMeter is good to have
Ensuring the code meets the required development standards and is optimized for performance
Experience managing teams and deliveries
Providing technical design or approach for a business problem
Leading the team towards the right solution with expected quality and timelines
Experience with Agile practices
With good collaboration skills to coordinate with US based onsite team and client team.
Good team player and coordination skills









