
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.
Please find the attached study material.
Data structure and Algorithms-
1. Basic Strings, Array and Mathematical based problems.
2. Sliding window problems
3. Problems solved using HashMap, Set and Stack.

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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Java Tech Lead (5–6 Years Experience)
About the Role
We are seeking a highly skilled Java Tech Lead with 5–6 years of hands-on experience in backend engineering, architecture design, and leading development teams.
The ideal candidate will combine strong technical expertise in Java frameworks with a deep understanding of system design, scalability, and performance optimization.
This role involves technical leadership, code reviews, and architectural decision-making for complex enterprise systems — with occasional exposure to analytics-driven and Python-based components.
Key Responsibilities
- Architect, design, and develop scalable backend systems using Java (Quarkus, Spring Boot, Spring, Java EE).
- Own the architecture — ensure modular, extensible, and high-performance service design.
- Lead and mentor a team of developers; conduct code reviews, enforce best practices, and ensure high code quality.
- Collaborate with cross-functional teams (frontend, DevOps, product, data) to deliver integrated, end-to-end solutions.
- Design and optimize database schemas (MySQL, PostgreSQL) and ensure efficient query performance.
- Implement and maintain microservices and distributed systems with strong fault tolerance and observability.
- Drive the adoption of modern development workflows — Git branching strategy, CI/CD, and code quality automation.
- Analyze system performance bottlenecks, implement monitoring, and ensure smooth production deployments.
- Contribute to architecture reviews, technical documentation, and design discussions.
- Occasionally contribute to Python-based analytics modules or automation scripts.
- Work with AWS cloud services (EC2, S3, RDS, Lambda) for deployment, scaling, and infrastructure automation.
Required Skills & Qualifications
- 5–6 years of professional experience in backend application development using Java.
- Strong proficiency in Java frameworks: Quarkus, Spring Boot, Spring, Java EE.
- Proven experience in architecture design, system decomposition, and microservices design principles.
- Solid understanding of object-oriented design (OOD), design patterns, and SOLID principles.
- Strong experience with relational databases (MySQL, PostgreSQL) and query optimization.
- Good understanding of event-driven systems, RESTful APIs, and asynchronous processing.
- Proficiency in Git for version control and team collaboration.
- Strong analytical and debugging skills; ability to diagnose complex production issues.
Good to Have
- Hands-on experience with Python for data processing or analytics integrations.
- Familiarity with AWS cloud architecture and cost optimization practices.
- Experience with CI/CD pipelines (GitHub Actions, Jenkins, GitLab CI).
- Knowledge of Docker/Kubernetes for containerized deployments.
- Exposure to NoSQL databases (MongoDB, DynamoDB, Cassandra).
- Experience with message queues (Kafka, RabbitMQ, or AWS SQS).
- Understanding of system scalability, caching (Redis/Memcached), and observability stacks (Prometheus, Grafana, ELK).
Soft Skills
- Strong leadership, mentoring, and communication skills.
- Proven ability to drive technical decisions and balance short-term delivery with long-term architectural health.
- Collaborative mindset — works closely with product, design, and operations teams.
- Passion for clean architecture, high performance, and continuous improvement.
- Self-driven with a strong sense of ownership and accountability.
Job Description
As part of our role at a leading global insurance company, we are responsible for developing and managing an application to onboard and oversee the company's sales partners, including agents and brokers. This application provides users with a tailored, independent solution, including a required multi-dimensional validity date concept for administering all organizational and contractual sales force data to deliver structured information to many data consumers.
To reinforce our dynamic development team, we are seeking a skilled Backend or Full-stack Developer. In this role, you will collaborate with international cross-functional teams to design, develop, and deploy high-quality software solutions.
Responsibilities
Design, develop, and maintain the application, ensuring high performance and responsiveness.
Write clean, efficient, and reusable code.
Implement new features and functionality based on business requirements.
Participate in system and application architecture discussions.
Create technical designs and specifications for new features or enhancements.
Write and execute unit tests to ensure code quality.
Debug and resolve technical issues and software defects.
Conduct code reviews to ensure adherence to best practices.
Identify and fix vulnerabilities to ensure application integrity.
Work with frontend developers to ensure seamless integration of user-facing elements.
Collaborate with DevOps teams for deployment and scaling.
Design and implement workflow automation using Camunda BPM, integrating it with backend services and ensuring efficient process execution.
Optimize and maintain business process models and workflow orchestration using Camunda.
Troubleshoot and enhance Camunda BPMN workflows, DMN decision tables, and process automation configurations.
Requirements
Bachelor's degree in computer science, Information Technology, or a related field.
Proven experience as a skilled Backend or Full-stack Developer. Experience in the insurance domain is appreciated.
Strong experience with Spring Boot 3, Java 17 or newer, and Maven.
Experience with PostgreSQL, Jenkins, Sonar, Dynatrace, Kubernetes, Mockito, IntelliJ IDEA, and GitHub repository.
Hands-on experience with Camunda BPM (v7 or v8), including BPMN workflows, DMN decision tables, and REST API integration.
Experience with Angular TS and/or AWS, Kafka is a plus.
Excellent problem-solving and debugging skills.
Strong communication and collaboration abilities to work effectively in a team environment.
Responsibilities include:
- Coordinate and clarify the requirements and technical issues (including client interaction)
- Support creation of high and low level design
- Development and maintenance of automation code
- Build reusable Business objects as required
- Review the automation implemented code
- Deploy the code to multiple environments phase wise
- Provides regular status updates to clients and management
- Participates in research/design/implementation of appropriate automation tools
- Develop .net libraries using C# /.Net
- Design and develop SQL scripts – Stored procedures, queries, and functions
- Perform unit testing, support systems integration testing and UAT testing
- Raise ticket and co-ordinate with IT team and CS team
- Analyze, estimate and implement special projects
- Effectively manage multiple priorities / assist with various projects as they arise.
- Accurately track, monitor, and report progress and obstacles
- Travel requirements will be modest, working hours must be flexible to deal with international time zone and key process owners located throughout the world.
Education, Experience, & Required Skills:
- Bachelor degree in Computer Science, Computer Engineering or equivalent is required
- 7+ years of overall IT experience
- 2+ years of overall development experience with leading RPA tool.
- Certified RPA Tool (UiPath, UiPath X, Blue Prism, Automation Anywhere) as developer
- Programming experience in Java, .Net, C, C#, .Net, Python
- Sufficient knowledge of RDBMS like ORACLE / MS SQL Server and SQL tools
- Knowledge in developing & understanding excel macros codes.
- Knowledge in Power BI, Excel Macro, web forms, mobile applications are preferable.
- Knowledge of service oriented architecture is preferable.
- Knowledge in Finance & Accounting domain is preferable.
- Strong written and verbal communication skills
- Excellent organization and communication skills.
- Effectively interact with various levels of management.
- Ability to multitask.
JOB DESCRIPTION
Nature of Work:
This being an advanced level position in the S/W development team the individual is expected to:
∙ Participate as a team member in all phases of the S/W lifecycle, including the analysis and design of S/W systems.
∙ Participate in a detailed level of coding, code walk – through and unit testing of S/W modules.
∙ Participate in integrated testing of product/ package.
∙ Participate in difficult and typical coding assignments with responsibility of a small module consisting of 3 – 5 members.
∙ Participate in exploration/ feasibility study of products.
∙ Have a thorough understanding of the assigned product/ project.
∙ Participate in generating technical documentation of products/ packages.
∙ Providing technical training to the juniors.
∙ Manage allocated resources, keep compliance with discipline and decorum of the organization.
∙ Keep compliance with Systems and Procedures.∙ Thorough knowledge of current technological trends in Web based Software
∙ Strong Working knowledge of JSF/JSP, Servlets, Spring, Web application development and Core Java
• Working knowledge of working with databases using EJB.
• Knowledge of Bug Tracking tool such as Jira, Bugzilla and source code version control systems (SVN, GIT)
• Knowledge of working in Scrum methodology.
• Good to have knowledge of SonarQube and Web Security Aspects.
• Knowledge of Responsive Front End Development using HTML5, JavaScript, CSS3, JQuery, Ajax and JSON.
• Should be able to write test cases for the feature.
∙ Ability to gather and analyze data & draw logical conclusions
∙ Understanding of company’s vision & goals, business operations∙ Clear and concise oral and written communication skills
∙ Ability to establish and maintain effective work relationships at
all levels
∙ Great passion for S/W development.
∙ Ability to mentor and guide the juniors.1. Cloud Backend Design along with data storage and backup solutions. 2. Backend APIs and System Design and Integration with IoT Devices, web and mobile applications.
3. Building reusable code and libraries for future use
4. Optimization of the application for maximum speed and scalability
5. Implementation of security and data protection
6. Design and implementation of data storage solutions
Required Skills:
1. Demonstrated history of designing and implementing Cloud-based Microservices Applications using AWS or GCP.
2. 5+ years of hands-on experience using core Java and SpringBoot framework.
3. Good Understanding of Serverless Architecture and Event-Driven Systems.
4. Understanding Product requirements and translating them into technical specifications and development using Agile methodology.
5. Understanding accessibility and security compliance on AWS/GCP and Spring Boot and Flask.
6. Good understanding of Data structures and Algorithms.
7. AWS Skills Required: AWS Lambda, DynamoDB, SNS, SQS, S3, IoT Core, Kinesis Streams, Elastic Beanstalk, EC2, IAM, Elastic Cache, API Gateway.
Good To have:
1. Knowledge of Kubernetes or other container orchestration tools.
2. Python and Flask.
3. Google Cloud Platform and Firebase
Java Backend Engineer - Fintech Rocketship Pilot
Distributed systems, scalability, reliability, robustness, security, quality, building responsive real time systems - do these terms get your adrenaline high? Come be a part of a high growth, fast paced engineering team building for India’s new generation.
We have an open culture, you take responsibility and ownership of what you do. No bureaucracy. No bullsh*t.
If you are up for big engineering challenges, personal and professional growth, then let’s join forces!
You’ll fit right in if you have - 2-3 years of experience building, running and maintaining production services Strong with Java and JVM based services along with PostgreSQL Comfortable working with multiple cloud providers: mainly GCP and AWS Comfortable with CI and CD tools and best practices Done TDD and values TDD
Good to have –
Engineering aptitude - Owns small features, starting from technical design through completion. Appreciates and participates in technical discussions, and values guidance and feedback. Does not need mentoring on a daily basis; makes steady progress by themselves, and knows when to ask for help to get unblocked. Comfortable with referencing technical specifications, API references, source code, and man pages to understand concepts or solve issues.
Design process - Understands the role and importance of design, can write good backend specifications Can communicate API specifications and design goals to the end consumers API
Code reviews - Understands the value of peer-reviewed code; learns how to be unbiased and provide effective feedback. Asks senior engineers for help when needed (e.g.: architecture decisions, refactoring)
Responsibilities & ownership
- Lead, build, deliver and ensure customer success of next-generation features related to scalability, reliability, robustness, usability, security, and performance of the product.
- Work on distributed systems for data processing with efficient protocols and communication, locking and consensus, schedulers, resource management, low latency access to distributed storage, auto scaling, and self healing.
- Understand and reason about concurrency and parallelization to deliver scalability and performance in a multithreaded and distributed environment.
- Lead the team to solve complex and unknown problems
- Solve technical problems and customer issues with technical expertise
- Design and deliver architectures that run optimally on public clouds like GCP, AWS, and Azure
- Mentor other team members for high quality and design
- Collaborate with Product Management to deliver on customer requirements and innovation
- Collaborate with Support and field teams to ensure that customers are successful with Dremio
Requirements
- B.S./M.S/Equivalent in Computer Science or a related technical field or equivalent experience
- Fluency in Java/C++ with 3alm+ years of experience developing production-level software
- Strong foundation in data structures, algorithms, multi-threaded and asynchronous programming models, and their use in developing distributed and scalable systems
- 5+ years experience in developing complex and scalable distributed systems and delivering, deploying, and managing microservices successfully
- Hands-on experience in query processing or optimization, distributed systems, concurrency control, data replication, code generation, networking, and storage systems
- Passion for quality, zero downtime upgrades, availability, resiliency, and uptime of the platform
- Passion for learning and delivering using latest technologies
- Ability to solve ambiguous, unexplored, and cross-team problems effectively
- Hands on experience of working projects on AWS, Azure, and Google Cloud Platform
- Experience with containers and Kubernetes for orchestration and container management in private and public clouds (AWS, Azure, and Google Cloud)
- Understanding of distributed file systems such as S3, ADLS, or HDFS
- Excellent communication skills and affinity for collaboration and teamwork
- Ability to work individually and collaboratively with other team members
- Ability to scope and plan solution for big problems and mentors others on the same
- Interested and motivated to be part of a fast-moving startup with a fun and accomplished team
Primary Responsibilities
- Design, architect and develop advanced software solutions in a cross functional Agile team supporting multiple projects and initiatives
- Collaborate with product owners and/or the business on requirements definition, development of functional specifications, and design
- Collaborate on or lead development of technical design and specifications as required
- Code, test and document new applications as well as changes to existing system functionality and ensure successful completion
- Take on leadership roles as needed
Skills & Requirements
- Bachelor’s Degree required, preferably in Computer Science or related field
- 3+ years of software development experience using GoLang/Java programming language
- Experience with cloud technologies (AWS/Azure/GCP/Pivotal Cloud Foundry/any private cloud) and containerization is required
- Experience with a micro-services architecture is a plus
- Excellent communication, collaboration, reporting, analytical and problem solving skills
- Experience with PostgreSQL or other Relational Databases
- Test-driven development mindset and a focus on quality, scalability and performance
- Strong programming fundamentals and ability to produce high quality code
- Solid understanding of Agile (SCRUM) Development Process required







