Java Developer

Wissen Technology is looking for experienced Java Developers to join our team in Bangalore!

📍 Location: Bangalore

💼 Experience: 5–7 Years

⚡ Immediate Joiners Only

🔑 Key Skills

Strong experience in Core Java

Strong understanding of OOPs concepts

Hands-on experience with Java Collections

Strong knowledge of Multithreading & Concurrency, DSA (Data Structures & Algorithms), Spring Boot & Microservices, REST APIs, SQL / Database

📌 Please Note: Only candidates currently based in Bangalore can apply, as the interview process includes F2F rounds.

JOB DESCRIPTION:

Location: mumbai, bangalore, pune

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– 8 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.

For more details:

Website: www.wissen.com

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

LinkedIn: Wissen Technology

Must have

Experience in the Core Java development 

Good understanding of Object Oriented Design, Design Patterns and data structure algorithms

Experience in Multi-threading, Hashmaps, Collection arrays

Experience in Java collections

Experience in developing applications using Spring Boot

Proficient in building Micro Services with Java 1.8 or higher, J2EE, Spring, Spring Boot.

Proficient with No SQL and Relational Databases

Hands on experience in Unit testing frameworks like Junit / Mockito OR TDD

Key Responsibilities:

• Around 4+ years of experience in Java backend development. Candidates with 3+ years of relevant experience may also be considered.
• Strong problem-solving and coding skills in Java are mandatory.
• Strong knowledge of the Spring Framework, including Spring Boot, RS services, and Spring Batch.
• Experience with microservices architecture is preferred. Candidates with basic microservices exposure may also be considered.
• Good understanding of SQL and NoSQL databases. Strong knowledge of at least one database system, such as BigQuery or Oracle, is mandatory.
• Exposure to Kafka, Docker and Kubernetes will be an added advantage.
• Familiarity with AI coding tools such as Claude Code or Cursor will be an added advantage.
• Candidates should have strong programming fundamentals to validate and review AI-generated outputs.

Greetings from NAM Info Pvt Ltd,

Job Title: Senior Java Spring Boot & Microservices Developer

Experience: 7+ Years

Primary Skills: Java 8/10, Spring Boot, Microservices, REST APIs, Kafka

Job Summary

We are looking for an experienced Java Spring Boot & Microservices Developer with 7+ years of hands-on experience in designing, developing, and deploying scalable enterprise applications. The ideal candidate should have strong expertise in Java 8/10, Spring Boot, Microservices architecture, RESTful APIs, Kafka, multithreading, collections, and coding best practices.

Key Responsibilities

• Design, develop, and maintain scalable applications using Java 8/10 and Spring Boot.
• Build and implement Microservices-based applications following industry best practices.
• Develop and integrate RESTful APIs with internal and external systems.
• Implement asynchronous and event-driven solutions using Apache Kafka.
• Write clean, efficient, maintainable, and reusable code.
• Optimize application performance using Java Collections, Multithreading, and Concurrency concepts.
• Troubleshoot, debug, and resolve production issues.
• Participate in code reviews and ensure adherence to coding standards.
• Collaborate with cross-functional teams including Product, QA, DevOps, and Business stakeholders.
• Contribute to architecture discussions and technical design decisions.

Required Skills

• 7+ years of hands-on experience in Java development.
• Strong proficiency in Java 8/10 features (Streams, Lambda Expressions, Optional, Functional Interfaces, etc.).
• Excellent understanding of Java Collections Framework.
• Strong knowledge of Multithreading and Concurrency.
• Hands-on experience with Spring Boot.
• Solid experience in developing REST APIs.
• Strong practical experience in Microservices architecture.
• Hands-on experience with Apache Kafka.
• Good understanding of object-oriented programming (OOP), design patterns, and SOLID principles.
• Strong coding, debugging, and problem-solving skills.
• Experience with Git and Maven/Gradle.
• Knowledge of SQL databases and API testing tools such as Postman.

Preferred Skills

• Experience with Docker and Kubernetes.
• Familiarity with CI/CD pipelines.
• Experience working with cloud platforms such as AWS, Azure, or GCP.
• Knowledge of monitoring and logging tools.
• Exposure to Agile/Scrum development methodologies.

Mandatory Technical Expertise

• Java 8/10
• Spring Boot
• REST APIs
• Microservices
• Apache Kafka
• Multithreading
• Collections Framework
• Strong Coding & Problem-Solving Skill

About NonStop io Technologies:

NonStop io Technologies is a value-driven company with a strong focus on process-oriented software engineering. We specialize in Product Development and have a decade's worth of experience in building web and mobile applications across various domains. NonStop io Technologies follows core principles that guide its operations and believes in staying invested in a product's vision for the long term. We are a small but proud group of individuals who believe in the 'givers gain' philosophy and strive to provide value in order to seek value. We are committed to and specialize in building cutting-edge technology products and serving as trusted technology partners for startups and enterprises. We pride ourselves on fostering innovation, learning, and community engagement. Join us to work on impactful projects in a collaborative and vibrant environment.

Brief Description:

NonStop io is seeking a proficient Java Developer to join our dynamic team. In this role, you will contribute to designing, developing, and maintaining high-quality Java-based applications. You will work closely with cross-functional teams, ensuring the delivery of robust and scalable software solutions.

Responsibilities:

• Develop and Maintain: Write clean, efficient, and maintainable code for Java-based applications
• Collaborate: Work with cross-functional teams to gather requirements and translate them into technical solutions
• Code Reviews: Participate in code reviews to maintain high-quality standards
• Troubleshooting: Debug and resolve application issues in a timely manner
• Testing: Develop and execute unit and integration tests to ensure software reliability
• Optimize: Identify and address performance bottlenecks to enhance application performance

Qualifications & Skills:

• Strong knowledge of Java, Spring Framework (Spring Boot, Spring MVC), and Hibernate/JPA
• Experience with microservices architecture, distributed systems, and complex system design
• Familiarity with RESTful APIs and web services
• Proficiency in working with relational databases like MySQL or PostgreSQL
• Experience with build tools like Maven or Gradle
• Understanding of version control systems, especially Git
• Strong understanding of object-oriented programming principles and design patterns
• Familiarity with automated testing frameworks and methodologies
• Understanding of AWS environments and cloud-based application deployment
• Experience working with CI/CD pipelines and DevOps practices
• Excellent problem-solving skills and attention to detail
• Strong communication skills and ability to work effectively in a collaborative team environment 

Why Join Us?

• Opportunity to work on cutting-edge technology products
• A collaborative and learning-driven environment
• Exposure to AI and software engineering innovations
• Excellent work ethic and culture

If you're passionate about technology and want to work on impactful projects, we'd love to hear from you

 Core Java Developer

Experience: 5+ Years

Employment Type: Full-time and Permanent

Location: Navi Mumbai or Gurugram

Job Description

We are looking for an experienced Core Java Developer with strong expertise in Java programming, backend development, and microservices architecture. The candidate should have hands-on experience in developing scalable applications, handling multithreading and concurrency, and working with Spring Boot.

Mandatory Skills:

• Strong hands-on experience in Core Java.
• Good knowledge of Spring Boot and Microservices architecture.
• Strong understanding of Multithreading and Concurrency.
• Experience with Java I/O and Networking.
• Understanding of JVM, Memory Management, Garbage Collection and performance tuning.
• Good knowledge of Linux/Unix environments.
• Strong understanding of object-oriented programming (OOPs) concepts.
• Experience in designing, developing, and troubleshooting backend applications.

Java Developer

Experience: 4+ Years

Location: Pune

Responsibilities:

• Actively contribute to designing, developing, testing, deploying, and maintaining software.
• Collaborate with the team to develop web services, mobile applications, and web applications. Create, enhance, deploy, and maintain functional, secure, and high-quality applications.
• Write well-designed, efficient, secure, and high-performance code.
• Follow best practices in software design and testing.
• Review, test, and debug team members' code.
• Actively contribute to writing and updating technical documentation.

Candidate Requirements:

• Minimum 4+ years of experience in web-based development using the following technologies:

 - Core Java, Spring MVC, Node.js, and ORM.

 - Working knowledge of relational databases, NoSQL databases, and caching technologies.

 - RESTful APIs, SOAP, and JSON.

 - Angular, HTML5, and CSS (StencilJS).

 - Knowledge of application performance tuning is mandatory.

• Proficient understanding of code versioning tools, such as Git.
• Experience in designing and developing microservices-based applications.
• Expertise in real-time issue debugging, root cause analysis, and providing accurate technical solutions.
• Hands-on experience in integrating and troubleshooting third-party APIs such as Perfios, IDfy, Karza Technologies, NSDL, Legality, Hunter, RBIH, and JanSamarth, including API request/response handling, authentication, error handling, and production issue resolution.
• Knowledge of Agile Scrum development methodologies.
• Ability to integrate applications with network systems, servers, and databases.
• Ability to troubleshoot application development and usage issues.
• Excellent conceptual and critical-thinking capabilities.
• Self-directed and self-motivated, with the ability to take charge or work in a supporting role.

Good to Have:

• Experience in the BFSI (Banking, Financial Services, and Insurance) or Fintech domain.

Job Summary

We are looking for an experienced Java Spring Boot Developer with strong expertise in Java, Spring Boot, and Microservices. The ideal candidate should have basic or junior-level experience with React.js and be comfortable working on backend development with some frontend integration.

Key Responsibilities

• Design, develop, and maintain scalable applications using Java and Spring Boot.
• Develop and maintain RESTful APIs and microservices-based applications.
• Build and enhance backend services based on business requirements.
• Work with databases, write optimized SQL queries, and manage data efficiently.
• Collaborate with frontend developers to integrate backend services with React.js applications.
• Participate in code reviews, debugging, troubleshooting, and performance optimization.
• Follow coding standards and contribute to application design and technical documentation.
• Work closely with cross-functional teams to deliver high-quality software solutions.

Mandatory Skills

• Java: Strong hands-on experience in Java development.
• Spring Boot: Experience developing applications using Spring Boot.
• Microservices: Hands-on experience designing and developing microservices.
• React.js: Basic or junior-level experience with React.js.
• REST APIs: Experience developing and integrating RESTful web services.
• SQL/Database: Working knowledge of SQL and relational databases.

Required Experience

• 5–7 years of overall software development experience.
• Strong backend development expertise in Java, Spring Boot, and Microservices.
• Basic working knowledge of React.js is sufficient.
• Good problem-solving, communication, and teamwork skills.

Java + Angular

Java, spring boot, microservice, angular

5-10yrs

Hyderabad, bangalore

immediate 15days

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