

Signalling, interlocking system
• Participate in Requirement Analysis and Design activities
• Develop code, unit testing, integration testing
• Perform module integration and integration testing
• Prepare and review Test Reports
• Actively participate in technical meetings and share ideas clearly
• Manage a team of engineers and provide leadership with clear communication
• Good at documentation
• And any other project related activity assigned

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Job Description:
As per our conversation, please find below the job description for your review.
· Strong written/verbal communication skills
· Minimum 5-14 Years of Core Java Programming with Collections Framework, Concurrent Programming, Multi-threading (Good knowledge in Executor service, Forkjoin pool and other threading concepts)
· Good knowledge of the JVM with an understanding of performance and memory optimization.
· Extensive and expert programming experience in JAVA programming language (strong OO skills preferred).
· Excellent knowledge on collections like, Array List, Vector, LinkedList, HashMap, Hash Table, HashSet is mandate.
· Exercised exemplary development practices including design specification, coding standards, unit testing, and code-reviews.
· Expert level understanding of Object-Oriented Concepts and Data Structures
· Good experience in Database (Sybase, Oracle, or SQL Server) like indexing (clustered, non clustered), hashing, segmenting, data types like clob / blob, views (materialized), replication, constraints, functions, triggers, procedures etc.
· While you may already know about Wissen and the company history, here is a quick rundown for you.
Key Responsibilities
- Develop and maintain backend services and APIs using Java (Spring Boot preferred).
- Integrate Large Language Models (LLMs) and Generative AI models (e.g., OpenAI, Hugging Face, LangChain) into applications.
- Collaborate with data scientists to build data pipelines and enable intelligent application features.
- Design scalable systems to support AI model inference and deployment.
- Work with cloud platforms (AWS, GCP, or Azure) for deploying AI-driven services.
- Write clean, maintainable, and well-tested code.
- Participate in code reviews and technical discussions.
Required Skills
- 3–5 years of experience in Java development (preferably with Spring Boot).
- Experience working with RESTful APIs, microservices, and cloud-based deployments.
- Exposure to LLMs, NLP, or GenAI tools (OpenAI, Cohere, Hugging Face, LangChain, etc.).
- Familiarity with Python for data science/ML integration is a plus.
- Good understanding of software engineering best practices (CI/CD, testing, etc.).
- Ability to work collaboratively in cross-functional teams.
Java Developer
Requirements:
1. Good knowledge and hands on experience in Java development with.
2. Good knowledge of Java and J2EE internals (Multi threading, Memory Management, Transaction
management etc.)
3. Good knowledge of Relational Databases, SQL and ORM technologies (JPA2, Hibernate)
4. Working experience in developing web applications using Spring MVC or Spring Boot.
5. Analytical mindset and good problem-solving skills is a must.
6. Able to write well-structured, testable, efficient code.
Job Description
We are looking for a passionate and motivated java backend developer to engineer low latency
applications for mission-critical systems, delivering high-availability and performance. You will be
contributing in all phases of the development lifecycle, and will be working closely with a cross-functional
team to create highly scalable products.
Salary: As per Industry Standards
Industry: IT-Software / Software Services
Functional Area: IT Software - eCommerce, Internet Technologies
Role Category:
Role: Backend Engineer
Skills required:
Expertise in core java
Strong skills in algorithms, data structures and object-oriented programming
Strong skills in designing scalable web systems
Experience in working on REST services and libraries like spring and hibernate
Experience in writing complex queries and understanding of database concepts and configurations (MySQL)
Understanding of design patterns.
Experience in micro services architecture will be a plus.
Good to have:
Experience in third party integrations.
Experience - 3- years in Java Backend integration

Proficient in Java, J2EE and related technologies.
• Experienced in using spring, Spring Boot, Hibernate, messaging systems.
• Good understanding of relational database performance concepts and usage of ORM frameworks such as Hibernate
• Expert understanding of the object-oriented design and programming concepts
• Strong working experience on Data Structures, Algorithms and Collections.
• Solid experience building applications on top of RESTful APIs.
• Knowledge/experience with Spring MVC
• Stroing knowledge in developing and executing automated unit, functional and integration tests
• Good communication and analytical skills.
• Strong trouble shooting skills

Strong competencies in data structures and algorithms.
Optimizing algorithm and code for performance or memory.
Familiarity with Linux/UNIX tools.
Engineers from Tier 1 college



