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.

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

Urgent Requirement 🔥

👉 Java Backend with AWS

👉 Java Backend with React, Spring Boot, Microservices

Exp: 3+ Yrs

Loc: Chennai, Bangalore, Hyderabad

Immediate Joiners Preferred!

Build Products. Solve Real Problems. Grow with Us.

Are you passionate about building scalable applications, solving complex engineering challenges, and working with modern technologies?

At NonStop io Technologies, we're looking for a talented Java Developer who enjoys creating high-quality software, collaborating with smart teams, and continuously learning new technologies.

This isn't just another development role. You'll work on real-world products, modern architectures, cloud technologies, AI-powered development tools, and systems that impact businesses and users every day.

If you're someone who loves writing clean code, takes ownership of your work, and wants to grow into a strong technical contributor or future tech lead, we'd love to connect with you.

About NonStop io Technologies

NonStop io Technologies is a product engineering company with 10+ years of experience building web and mobile applications for startups and enterprises.

We're a team of passionate engineers who believe in:

• Building products, not just projects
• Continuous learning and innovation
• Engineering excellence and quality delivery
• Long-term ownership and customer success
• Collaboration, transparency, and growth

Our engineers don't just execute tasks, contribute ideas, influence architecture decisions, and help shape products from concept to scale.

What You'll Be Working On

• Designing and developing scalable backend applications using Java and Spring Boot
• Building REST APIs and Microservices
• Working on cloud-ready applications and distributed systems
• Collaborating with product managers, designers, and engineers
• Improving application performance, scalability, and reliability
• Contributing to architecture and technical design discussions
• Leveraging AI-powered development tools to enhance productivity
• Working with CI/CD pipelines and modern software engineering practices.

Skills We're Looking For

Must Have

• 3–6 years of experience in Java development(Min 3 Years)
• Strong expertise in Java, Spring Boot, Spring MVC, and Hibernate/JPA
• Experience building Microservices and REST APIs
• Strong understanding of OOP, Design Patterns, and Clean Coding Practices
• Experience with MySQL or PostgreSQL
• Working knowledge of Git
• Hands-on experience with Frontend Technologies (HTML, CSS, JavaScript, React/Angular)
• Experience with Maven or Gradle

Good to Have

• Experience with AWS or cloud environments
• Exposure to CI/CD pipelines and DevOps practices
• Experience with distributed systems and scalable architectures
• Knowledge of automated testing frameworks
• Familiarity with AI-assisted development tools such as GitHub Copilot

Why Developers Love Working With Us

• Work on real products with real impact
• Opportunity to work on modern architectures and cloud technologies
• Exposure to AI-powered software development practices
• Learn directly from experienced engineers and architects
• Friendly, collaborative, and growth-oriented culture
• Freedom to experiment, innovate, and share ideas
• Continuous learning and career growth opportunities
• Work with a team that values ownership, trust, and engineering excellence

Interested in Joining Our Team?

We're always excited to connect with developers who are curious, driven, and passionate about technology.

If you enjoy building quality software, learning new technologies, and taking ownership of your work, this could be the right opportunity for you.

We look forward to connecting with you!

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

Call or WhatsApp: 6 3 8 5 0 7 6 1 4 2

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

📝 Job Description: Full Stack Java Developer (4.5+ Years)

📌 Position Overview

We are seeking a highly motivated Full Stack Java Developer with 4+ years of professional experience to join our dynamic team. The ideal candidate will be responsible for designing, developing, and maintaining scalable web applications, working across both backend and frontend technologies.

🔑 Key Responsibilities

• Develop and maintain Java-based backend services using Spring Boot, Hibernate/JPA, and RESTful APIs.
• Build responsive and interactive frontend applications using React.
• Experience with AI tools 
• Collaborate with cross-functional teams to define, design, and ship new features.
• Optimize application performance and ensure scalability.
• Write clean, maintainable, and testable code with unit testing frameworks (JUnit, Mockito).
• Participate in code reviews, troubleshooting, and debugging across the stack.
• Work with CI/CD pipelines, Docker/Kubernetes, and cloud platforms (AWS/Azure/GCP).

🎯 Required Skills & Qualifications

• Bachelor’s degree in Computer Science, Engineering, or related field.
• 4+ years of experience in Java development and full stack application design.
• Strong knowledge of Spring Boot, Hibernate/JPA, REST APIs.
• Hands-on experience with frontend frameworks (React/Angular/Vue.js).
• Proficiency in SQL/NoSQL databases (MySQL, PostgreSQL, MongoDB).
• Familiarity with DevOps tools (Git, Jenkins, Docker, Kubernetes).
• Strong problem-solving skills and ability to work independently.

🌟 Preferred Qualifications

• Experience with microservices architecture.
• Exposure to cloud-native applications (AWS/Azure/GCP).
• Knowledge of Agile/Scrum methodologies.
• Good communication and teamwork skills.

•      3+ years of hands-on experience developing and testing highly scalable software.

•      Excellent coding skills in Java 17 or above.

•      Very good understanding of any RDBMS and/or messaging queues

•      Proficient in Core java, Solid foundation in object-oriented development and design patterns.

•      Excellent problem-solving skills and attention to detail.

•      Ability to engineer complex features/systems from scratch and drive it to completion.

•      Good knowledge of multiple data storage systems.

•      Prior experience in micro services and event driven architecture.

•      Experience with Spring boot and Spring Security Framework

•      Spring web-flux understanding is desirable

•      Understand OWASP Top 10/CWE, DAST and SAST

Java Developer – Playwright

Experience: 5–10 Years

Location: Bangalore

Primary Skill: Java Development – 80%

Secondary Skill: Playwright – 20%

Job Summary

We are looking for a skilled Java Developer with 5+ years of experience in designing, developing, and maintaining scalable Java applications. The candidate should have strong hands-on expertise in Core Java / Java 8+, backend development, and a good understanding of software development practices.

Experience with Playwright for UI automation and testing is required as a secondary skill. The role will involve approximately 80% Java development and 20% Playwright-based automation/testing.

Key Responsibilities

• Design, develop, and maintain scalable applications using Java.
• Develop clean, efficient, reusable, and maintainable code.
• Work on backend services, APIs, business logic, and application components.
• Troubleshoot and resolve application issues and performance bottlenecks.
• Participate in code reviews and follow coding and development best practices.
• Collaborate with product managers, architects, QA engineers, and other development teams.
• Develop and integrate RESTful APIs and backend services.
• Write unit and integration tests to ensure application quality.
• Contribute to CI/CD and Agile development processes.
• Develop and maintain automated UI test cases using Playwright.
• Use Playwright to validate web application functionality and support regression testing.
• Investigate and resolve automation failures in collaboration with QA and development teams.

Required Skills

• 5+ years of professional experience in Java development.
• Strong knowledge of Core Java, Java 8/11/17+, OOP, collections, exception handling, multithreading, and Java fundamentals.
• Strong experience with Spring / Spring Boot.
• Good experience developing REST APIs and microservices.
• Experience with SQL and relational databases.
• Good understanding of design patterns and software development principles.
• Experience with Git and build tools such as Maven or Gradle.
• Hands-on experience with Playwright for web automation.
• Good understanding of automated testing concepts.
• Experience working in Agile/Scrum environments.
• Strong analytical and problem-solving skills.

Good to Have

• Experience with Microservices architecture.
• Knowledge of Docker/Kubernetes.
• Experience with cloud platforms such as AWS, Azure, or GCP.
• Knowledge of Kafka or other messaging technologies.
• Experience with CI/CD tools such as Jenkins, GitHub Actions, or GitLab CI.
• Experience with JUnit/Mockito and API testing.
• Familiarity with Selenium or other UI automation frameworks.

Education

Bachelor’s degree in Computer Science, Engineering, or a related technical field.

Role Summary

Java Development: 80%

Playwright Automation: 20%

Experience: 5–10 Years

Location: Bangalore