Java Developer

ABOUT THE ROLE

The Principal Software Engineer – Java will play a pivotal role in designing, developing, mentoring and maintaining high-performance IT system for Hapag-Lloyd. The role requires deep expertise in Java and microservices-based architecture, along with a strong focus on code quality, performance, and scalability. The ideal candidate will be a passionate engineer who thrives in a Java development agile environment and brings a solution-oriented mindset to collaborative product development. As a senior technical expert, you will be responsible for low-level and high-level architectural design, mentoring developers, and working closely with team in Hamburg & Chennai. The ideal candidate is a passionate, solutionoriented engineer with a proven track record in leading technical projects within an agile environment.

WORK EXPERIENCE:

5–10 years of hands-on experience in development using Java, JEE, JPA, JUnit, Kafka, and Microservices. Good Experience in AWS. Strong experience in architectural design – both low-level and high-level. Experience building distributed systems and working in microservices-based architecture. Proficient with Kafka and message-driven architecture. Strong experience with relational databases (e.g., PostgreSQL). Sound understanding of modern DevOps practices, including CI/CD pipelines, containerization, and cloud deployment. Experience working in Agile/Scrum-based teams with exposure to software lifecycle tools (e.g., Git, Jenkins, JIRA).

Technical Skills Java, JEE, JPA, JUnit, Microservices Kafka (Desired), REST API development SQL, PostgreSQL Git, Maven, Jenkins (Desired), Familiarity with Docker, Kubernetes, and cloud platforms (eg. AWS)

EDUCATION & QUALIFICATIONS Bachelor’s degree in computer science, Engineering, or related discipline

KEY RESPONSIBILITIES & TASKS

Software Development & Design Design and develop scalable, reliable, and high-performance applications using Java, JPA, Kafka, Microservices, Junit, API and PostgreSQL. Lead low-level and high-level design discussions and decisions for scalable architecture. Build and maintain microservices architecture using industry best practices. Drive technology innovation. Write clean, efficient, well-documented code with high unit test coverage using JUnit.

Mentorship :

Mentor and guide developers and team members in coding standards, best practices, and problem-solving. Conduct regular code reviews, peer programming, and provide technical leadership to ensure code quality and continuous improvement.

Systems Integration & Tools:

Work with messaging systems such as Kafka to build real-time data processing services. Implement and optimize data access using SQL /PostgreSQL databases. Participate in the design and implementation of DevOps pipelines for CI/CD.

Quality, Testing & Documentation:

Conduct regular code reviews and participate in peer programming and Peer coding Review. Perform system testing, validation, and verification across development stages. Contribute to technical documentation throughout the software development lifecycle

Agile Collaboration & Continuous Improvement:

Collaborate closely with Product Managers, Engineering Managers, Scrum Masters, and developers in agile teams. Participate in sprint planning, retrospectives, and demos. Remain current on new technologies and drive adoption of best engineering practices across the team.

BEHAVIOURS & APPROACH

Strong analytical and problem-solving skills Team-oriented with excellent communication and collaboration skills Passion for clean code, architecture, and continuous learning Ability to work independently with a proactive approach to problem-solving

Wissen Technology is hiring for Java Tech lead

Required:

• 8-10 years of industrial experience
• Java and related frameworks.
• Experience in Core Java 1.8 and above, Data Structures, OOPS, Multithreading, Microservices, Spring and Swift Payments
• Exposure on Fintech domain is mandatory
• Should have the ability to analyse, design, develop and test complex, low-latency client-facing applications.
• Good development experience with RDBMS
• Good knowledge of multi-threading and high volume server side development
• Excellent problem solving and coding skills in Java
• Strong interpersonal, communication and analytical skills.

Company Profile:

Company Name : Wissen Technology

Group of companies in India : Wissen Technology & Wissen Infotech

Work Location - Bangalore

Website : www.wissen.com

Wissen Thought leadership : https://www.wissen.com/articles/

LinkedIn: https://www.linkedin.com/company/wissen-technology

Desired Experience

3+ years

Job Description

What You’ll Do

• Design financial systems for scale. Measure, plan, iterate.
• Writing reusable, testable, and efficient code
• Design and implementation of low-latency, high-availability, and performant applications
• Setup and own the engineering architectures built around event sourcing, application sharding, database sharding, service communication mesh, etc.
• The tech: Go, Google Cloud Spanner, Kafka, Redis

What you bring to the table

• 3+ years of experience. Relevant experience is preferred.
• Knowledge of 2 common programming languages - Java & Node / Rust /Python & Go
• Comfortable in linux command line, AWS or GCP
• Strong unit test and debugging skills
• Great communication skills

Bonus if you have…

• Love building great products and engineering systems from scratch
• Are a Self-starter, Hustler and Curious to Learn
• Have an understanding of fundamental design principles behind a scalable application
• Thrive in an early-stage startup environment with less stability and more ambiguity
• Have an interest in financial products and/or cryptocurrency

Role Description :

- Good Understanding of Java 8 with proven hands-on skills
- Experience in Spring Framework - Spring Boot, Spring Data, Spring REST
- Experience in Spring Reactive
- Experience in Git, Gradle / Maven
- Practitioner of clean code and SOLID principles
- Able to test drive features
- Can debug code at ease and ensure quality code is produced
- Knowledge of design patterns
- Comfortable with agile practices, user stories and task breakdown
- Understands REST principles and Micro services
- Experienced with technologies such as
- Required Java, Spring Boot
- Good to have Maven, GIT, Swagger, PCF, Rabbit MQ
- Good API skills technology such as Rest Webservice
- Good foundation in data structures, algorithms and OO Design with rock solid programming skills
- Experienced on creating unit test using JUnit, Mockito or PowerMock
- Experienced on mark up language such as JSON and YML
- Experienced on using Quality and Security scan tools such as Sonar, Fortify and WebInspect
- Experienced on agile methodology

· 3+ years java development experience with JSE/JEE, Java based Micro-services framework and implementation, Spring framework, Hibernate framework, SQL etc

· Hands on experience on Spring boot & Microservices .

· Strong knowledge of micro-service logging, monitoring, debugging and testing

· Implementations experience of micro-service integration, packaging, build automation and deployment.

· Object Oriented analysis and design using common design patterns.

We are looking for Product Developers-Java Technology with hands-on experience in Core java and socket programming with the flair for working on cutting-edge solutions.

Responsibilities and duties:

• Responsible for the development and unit testing of various modules in JAVA and other related technologies. 
• Need to do requirement understanding, preparing initial concept and possible architecture design. 
• Responsible for feasibility analysis and POC development. 
• Ability to understand the product architecture and end-to-end system flow. 
• Ability to relate and analyze tasks as per overall product architecture and philosophy. 
• Work in Agile SCRUM development model and be able to plan, estimate, execute and deliver quality work as per committed timeline. 
• Ability to continuously analyze and contribute to lean processes, quality improvements, product growth, and productivity improvements within the team.

Required Skills: 

• JAVA - Core JAVA Concepts, Socket Communication, Multithreading, Exception Handling, Collections Framework, Reflections, I/O, XML, HTML, JSON, YML
• Database version management tools like Liquibase etc.
• Version control system like GIT. Hands-on experience with strong knowledge of branching, merging,
• Build systems like Maven, Gradle, Ant etc.
• Hands-on experience in running development environment on Unix/Linux (Ubuntu, CentOS).
• Cloud computing experience, Integration with third-party devices, experience in writing REST APIs, shell scripting knowledge will be an added advantage.

  We are looking for Product Developers-Java Technology with hands-on experience in Core java and socket programming with the flair for working on cutting-edge solutions.

• 10 + years of experience and expertise in database and systems architecture design, development and implementation;
• Expertise and experience in data structures, indexing, query, and retrieval;
• Excellent data management skills including ensuring data integrity, data access, security and archiving procedures;
• Knowledge of the language technology and video extraction research domains to be able to converse fluently with the research communities to transform research requirements into concrete formalisms.
• Experience in cross platform development for multiple variants of Unix, Linux including 32 and 64 bit
• Experience with NoSQL, SQL databases, statistics and algorithms
• Strong oral and written communication skills
• Design, implement and test novel database architecture designs to accommodate the multimodal data types used in Client managed technology evaluations
• Administer and monitor database and address data security solutions as applicable
• Design and develop efficient techniques for fast, optimized data access and transfer of distributed or networked database systems
• Design, implement and test novel data structures, data search, query and retrieval solutions to enable access to and processing of the multimodal data types used in Client managed technology evaluations