Java Developer at Wissen Technology · Bengaluru (Bangalore) · 3 - 12 years · Profitable · Posted 19 Jul 2025

- Experience in Core Java, CXF, Spring.
- Experience in spring boot, microservices.
- Extensive experience in developing enterprise-scale n-tier applications for the financial domain. 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, preferably Sybase database
- Good knowledge of multi-threading and high volume server side development
- Experience in sales and trading platforms in investment banking/capital markets
- Basic working knowledge of Unix/Linux
- Excellent problem solving and coding skills in Java
- 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.
Connect with the team
Similar jobs (10)
Software Development Engineers will be responsible to participate in all stages of
the software product development life cycle. This will include analyzing system
and user requirements, designing software flowcharts, writing clean Java code,
troubleshooting bugs, and running tests to improve system functionality.
An ideal candidate would be someone who has proficiency in Java technologies,
good analytical skills, the ability to anticipate issues and frame remedial actions,
and excellent teamwork skills.
What will you be doing?
● Write simple, efficient, and maintainable code.
● Design, develop, scale and maintain backend services in Java
● Manage individual priorities, deadlines, and deliverables.
● Validating the functionality and security of the application.
● Function well in a fast-paced, rapidly changing environment
● Ensuring best coding standards and practices to improve and maintain
quality.
● Meeting with the engineering and product team to discuss project definitions
and goals.
What will you need ?
● Bachelor/Master degree in CS or related field from a reputed college
● Sound knowledge of Java technologies.
● Solid grip on the programming basics like DS and algorithms, OOPS.
● Understanding & experience with software design pattern, restful APIs and
microservice architecture
● Experience with software design and application programming.
● Prior experience in start-ups or health-tech will be a plus
- Good design skills and exposure to multiple software architectures.
- Strong understanding of OO/ knowledge of frameworks such as Spring/ Spring Boot/ design and good software development practices.
- Strong core server-side technologies experience (Java).
- Knowledge of Android is a huge plus.
- Strong database skills including schema design.
- Strong knowhow of data-structures and algorithms.
- Experience with configuration management, testing, deployment.
- Hands on development across technologies.
We are looking for a passionate and experienced Java Developer with over 4 years of hands-on experience in building robust and scalable backend systems using Java, Spring Boot, and Microservices architecture.
Key Responsibilities:
- Design, develop, test, and deploy high-performance, scalable, and secure backend services using Java 8+, Spring Boot, and Microservices.
- Participate in the entire software development lifecycle (SDLC), from requirements gathering to production deployment and support.
- Collaborate with frontend developers, DevOps engineers, and product owners to deliver end-to-end features.
- Optimize application performance and ensure high availability and responsiveness.
- Write clean, maintainable, and reusable code while following best practices (coding standards, unit testing, CI/CD, etc.).
- Develop RESTful APIs and ensure their quality and consistency.
- Handle integration with external systems and third-party services.
- Participate in code reviews, provide constructive feedback, and mentor junior developers.
Technical Skills Required:
- Languages: Java 8 or above
- Frameworks: Spring Boot, Spring MVC, Spring Security
- Architecture: Microservices architecture and design patterns
- Databases: MySQL/PostgreSQL, MongoDB (optional)
- Messaging: Kafka, RabbitMQ (optional)
- API Development: RESTful APIs, Swagger/OpenAPI
- Version Control: Git, GitHub/GitLab
- Tools: Maven/Gradle, Jenkins, Docker
- Testing: JUnit, Mockito
- Cloud (optional): AWS/Azure/GCP exposure
- CI/CD & DevOps tools (optional): Jenkins, Docker, Kubernetes
Nice to Have:
- Experience in containerization and orchestration (Docker, Kubernetes).
- Knowledge of API Gateway, Service Registry (e.g., Eureka), and Circuit Breakers (e.g., Hystrix or Resilience4j).
- Experience with Agile methodologies (Scrum/Kanban).
- Familiarity with monitoring and logging tools (ELK, Prometheus, Grafana, etc.).
oin us and be a part of a company that thrives on creativity, technology, and excellence.
CHANCE TO WORK WITH APPS WITH 10LAKH CONCURRENT USERS IN GAMING INDUSTRY
Role Description
- You are a champion at Code reviews and Unit/Mock/integration Tests
- You have a strong sense of ownership of what you design and deploy
- You provide strong technical mentorship to team members
- You are an excellent team player
- You continuously learn and improve
We are seeking a highly motivated and experienced Senior Java Software Engineer to join our team. In this role, you will lead and manage software development projects across diverse domains such as Gaming, Banking, Fintech, Fantasy Sports, IT, E-commerce, Logistics, Healthcare, and On-Demand Services. You will be responsible for ensuring the successful delivery of projects, meeting deadlines, and exceeding client expectations.
Skill Sets
- Excellent Programmer: in Java Intermediate (Collections, Polymorphism, Design Patterns) to Expert level (Annotations, Lambda, Streaming, Concurrency)
- Startup Experience: Proven ability to take extreme ownership of results, with a history of leaving a lasting impact on the business.
- Relevant Experience: At least 6-10 years of experience demonstrated the ability to develop resilient, high-performance, and scalable code tailored to application usage demands.
- Java Framework Expertise: Significant experience in designing and building Java microservices with VERT.X, SPRING BOOT, with proficiency in Java.
- REST API & GraphQL: Hands-on expertise in development API endpoints with RESTful & GraphQL approach, also non-REST frameworks like gRPC over Thrift or Protobuf Nuances of TCP, UDP, HTTP, HTTP2, SSL, Thorough understanding of designing distributed systems without single point of failures
- Cloud Proficiency: Strong understanding and hands-on experience of building applications deployed on the cloud using Google Cloud Platform or Amazon Web Services (AWS), Docker, and Kubernetes, Experience writing batch/cron jobs using Python and Shell scripting.
- Containerization & Orchestration: Experience with containerization technologies like Docker and orchestration tools like Kubernetes.
- Time & Space Complexity: if methods you write are in the traffic request path, you know how to avoid unacceptable time complexity & space complexity.
- Database Knowledge: Strong experience with Data Structures & Algorithms working with MongoDB, PostgreSQL, MySQL, Redis, ElasticSearch, and other similar databases, ability to choose the right data store for the given requirements Relational, Graph, Object, Document, Columnar, Key-Value. Experience with Redis, Memcache, EHCache, Hazelcast, Aerospike
- Messaging Systems: Proficiency in working with RabbitMQ, BullMQ & others
- Agile Practices: At least a few years of experience practicing the SCRUM framework, collaborating with scrum masters, product owners, and other stakeholders.
- Collaboration & Communication: A team player who thrives in a remote, collaborative environment.
- Communication Skills: Strong verbal and written communication skills.
- Solutions-Oriented: Comfortable with the fast pace of startup life and adept at finding solutions to challenges.
Responsibilities
- Scalable Architecture: Lead the design and development of scalable architecture to ensure efficient performance and reliability of web and mobile applications.
- Informed Decisions: Make informed architectural decisions that align with both current and future business needs.
- Security & Privacy: Ensure security and privacy considerations are integrated into the selection of solutions and coding of back-end services and API endpoints.
- Code Quality & High Standards: Uphold high standards of code quality through regular reviews, maintaining best practices in programming.
- Robust Testing: Implement robust testing strategies to ensure code reliability and performance.
- Backend Development: Design, develop, and deploy backend services and APIs using VERT.X, SPRING BOOT Java and AWS technologies.
- NoSQL Expertise: Effective schema design and data modeling for NoSQL databases, ideally MongoDB, including robust indexing strategies.
- Technical Debt Management: Monitor and control technical debt to ensure it does not compromise application scalability or performance.
- Task Planning: Collaborate with the PM and BA to plan and delegate tasks efficiently among backend team members, ensuring clear objectives and timelines.
- User Requirements: Support the PM, BA team in identifying and analyzing user requirements to ensure development aligns with user expectations and project scope.
- Systems Thinking: Apply systems thinking to align with broader business objectives.
- Autonomy: Get things done independently without supervision and without creating future issues.
- Simplicity: Strive for simplicity in solutions and code.
- Proactive Problem Solving: Fix problems, even those outside your immediate responsibility.
- Solution-Oriented: Focus on providing solutions to problems, not just writing code.
Life@Sciflare:
- An exciting & lively workplace gives you the chance to work in an environment where you may unleash your creativity and inventiveness to the best extent possible.
- Work in a collaborative setting where your cooperative team contributes new perspectives to your objectives and forges strong bonds.
- Growth mindset: You are nurtured through each stage of your professional advancement by learning and unlearning new things.

➢ Must have great ability to create RESTful webservices in SpringBoot
➢ Great to have knowledge and experience in PL/SQL
➢ Great to have exposure into React 17+/MaterialUI
➢ Exposure into Load Balancing using Nginx
➢ Exposure into Docker
➢ Exposure into Fusion
Knowledge, Skills and Attributes:
➢ Good verbal, written communication skills and interpersonal skills
➢ Ability to work in late evening shifts to overlap with the counterparts in US
➢ Demonstrate a positive attitude
➢ Display a level of integrity
➢ Immediate joining
➢ Experience of minimum 5 years
➢ Handle things individually, ready to start off
- Optimizing components for maximum performance across a vast array of web-capable devices and browsers
- Ability to understand business requirements and translate them into technical requirements
- You will ensure that these components and the overall application are robust and easy to maintain.
- Have a good understanding of design and user experience principles.
- Open-minded, flexible, and willing to adapt to changing situations
- Ability to work independently as well as on a team and learn from colleagues
- High adaptability in a dynamic start-up environment
- Ensuring technologies are used efficiently, profitably, and securely. Evaluating and implementing new systems and infrastructure.
- Excellent troubleshooting, analytical and problem-solving abilities with a tenacious commitment to finding the root cause of issues.
Qualifications :
- B. Tech/ B.E. /M. Tech/ BCA / MCA or a related technical discipline from reputed universities
Skills Required :
- Minimum 1+ years of experience in REST API development using python.
- Must have experience with anyone popular python frameworks like Django, Flask, and FastAPI Framework.
- Experience in designing and developing Restful Web services and Remote procedure calls.
- Able to integrate multiple data sources and databases into one system
- Knowledge of load testing and optimizing code for performance, security, and scalability
- Experience with Unit testing frameworks in Python
- Knowledge of modern authorization & authentication mechanisms.
- Able to create database schemes that represent and support business processes
- Knowledge of Version Control System & basics of CI/CD
- Write and maintain technical documentation
- Solid foundation in OOPS, Data structures, and Algorithms
- Knowledge of SDLC phases of project development.
- Experience in one or more No SQL Databases such as MongoDB, and Cassandra.
- Experience with event-based databases and programming
- Good experience in synchronous programming and thread-based programming.
- Experience with schedulers.
- Good to have knowledge of Linux shell commands.
- Good to have experience in Kubernetes & Docker
- Knowledge of any Cloud Service like GCP or AWS would be an added advantage
- Cares deeply about writing Quality, Testable & Modular code
- Good to have an understanding of NLP.

Responsibilities
- Technical Guidance: You will provide technical leadership to a team of excellent software engineers; this requires that you have the technical depth to make complex design decisions and the hands-on ability to lead by example.
- Execution and Delivery: You will be expected to instill and follow good software development practices and ensure timely delivery of high-quality products. You should be familiar with agile practices as well as be able to adapt these to the needs of the business, with a constant focus on product quality.
- Team management : You will be responsible for hiring and mentoring your team; helping individuals grow in their careers, having constant dialogue about their aspirations and sharing prompt, clear and actionable feedback about performance.
- Technical depth: You have the strong technical competence required to gain credibility. Ability to architect, design and code yourself. Technical experience in building and operating web-based applications. Deep understanding of all layers of the web-stack work (from the client interface to the database.) Knowledge of multiple technology stacks/languages/tools and their pros/cons.
- Execution ability: Focus on delivering products in a timely manner with high quality. Familiarity with multiple software development practices and tools, and the proven ability to adapt, champion and institute good practices and tools.
- You must have a degree in Computer Science or a related field. Strong understanding of object- oriented programming, concurrency and fundamentals of computer-science.
- Total of 9+ years’ experience building cutting edge products. Deep experience in building very large scale applications and 2 + years’ experience in team management.
- Strong problem solving skills, data structures and algorithms.
Location – Bangalore/Hyderabad
Job Roles & Responsibilities:
Full Stack Sr. Java Developer with competencies focused on :
• Experience in the Java 8 , Spring boot , Struct etc.
• Good Experience with AWS Cloud Platform and its related services.
• CI/CD deployments using GitLab and Docker Containers etc.
Here are few responsibilities on the job:
• Gather & analyse requirements , design, develop , test and perform root cause analysis.
• Actively participate in technical brainstorming session for solution building
• Provide technical guidance to team members if needed.
• Develop and Support Application Integration requirements etc.
• Participate in code reviews and design sessions etc.
Must Haves skillset : Java 8, Spring Boot , Microservices and AWS ; Should have worked with Offshore , mentor and coach them to deliver.
Secondary / Nice To Have : Java Structs Framework , Angular JS, Aurora Postgres.
- 6 to 8 years of experience with the majority as Java engineer
- Strong hands-on experience on building the application using technologies Java, Spring/Springboot/Microservices
- Experience in building Micro Services using Spring Boot would be a plus
- Strong knowledge and experience with SQL queries and databases like Postgre SQL/Oracle.







