Familiarity with Agile development methodologies.
• Areas of expertise: Go, Electron, NodeJs.
• Developer in Linux and Windows environments
• Proficient in software development tools such as IDEs, debuggers, profilers, source control systems.
• Strong in coding languages (e.g. C, C++, Go, Java) and frameworks (e.g. NodeJs, Electron, Git)
Preferred Qualifications
The ideal candidate will possess the following experience:
• Good subject matter expertise with Kubernetes, Docker and other container orchestration tool.
• Practical experience developing, testing and operating a service in a hybrid cloud.
• Outstanding coding/scripting skills, preferably in Go.
• Experience with Linux/Unix
• Experience in Jenkins and CI/CD environment
• Strong oral and written communication skills

About Careator Technologies Pvt Ltd
About
Careator Technologies :
We provide end-to-end IT and digital transformation services, including SAP ERP solutions (implementation, S/4HANA migration, cloud, analytics), Salesforce CRM services (full-cycle implementation, customization, integration, support), and Custom Application and Product Development.
We also deliver Business Intelligence & Analytics solutions and IT staffing/talent solutions to help organizations scale technology teams and projects effectively.
15 years of Delivering Assurance Globally.
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🧠 Job Description: Senior Java Developer (8+ Years Experience)
Location: Mumbai, India
Employment Type: Full-time, Hybrid mode of working
Company: Wissen Technology
Website: www.wissen.com
🚀 About Wissen Technology
Wissen Technology is a specialized technology consulting firm delivering cutting-edge solutions to global leaders in Banking & Finance, Telecom, and Healthcare. Established in 2015 and part of the Wissen Group (founded in 2000), Wissen has scaled rapidly with impressive impact and recognition.
- 🌍 Offices in US, UK, India, Australia, Mexico, and Canada
- 👥 1700+ Wissen Technology professionals; part of a 4500-strong Wissen Group
- 🏆 Great Place to Work® Certified
- 🧠 Featured as a Top 20 AI/ML Vendor (CIO Insider, 2020)
- 📈 Achieved 400% revenue growth in 5 years (with zero external funding)
- 💼 Delivered $1B+ worth of projects to 50+ Fortune 500 companies
Learn more about our work and thought leadership:
📄 Articles by Wissen | 💼 LinkedIn
About the Role
We are seeking an experienced Senior Java Developer with 8+ years of hands-on expertise in building scalable, high-performance applications. The ideal candidate will have strong fundamentals in Java, OOPS, Multithreading, Spring concepts, and SQL, and will play a key role in designing, developing, and optimizing enterprise-grade solutions.
Key Responsibilities
- Design, develop, and maintain complex applications using Core Java and Spring frameworks
- Apply advanced Object-Oriented Programming (OOPS) principles to deliver clean, modular, and reusable code
- Implement and optimize multithreaded applications for high-performance systems
- Work with SQL databases for efficient data modeling, query optimization, and integration
- Collaborate with cross-functional teams to gather requirements and translate them into technical solutions
- Conduct code reviews, troubleshoot issues, and ensure adherence to best practices
- Mentor junior developers and contribute to technical knowledge sharing within the team
- Ensure application scalability, performance tuning, and security compliance
Required Skills & Qualifications
- Bachelor’s/Master’s degree in Computer Science, Engineering, or related field
- 8+ years of professional experience in Java development
- Strong expertise in Core Java, OOPS, and Multithreading
- Hands-on experience with Spring concepts (Spring Core, Spring MVC, Spring Boot preferred)
- Proficiency in SQL and database design (MySQL, Oracle, PostgreSQL, etc.)
- Solid understanding of software development life cycle (SDLC) and Agile methodologies
- Strong analytical, problem-solving, and communication skills
🌟 Why Wissen?
Join a company that combines start-up agility with enterprise stability. Work alongside some of the brightest minds from institutions like MIT, Wharton, IITs, IIMs, and NITs. Be part of mission-critical projects for Fortune 500 giants, and grow in a culture that invests in your future.
Responsibilities:
• Contribute to all phases of the development lifecycle
• Write well designed, testable, efficient code
• Prepare and produce releases of software components
• Support continuous improvement by investigating alternatives and technologies and presenting these for architectural review • Designing, implementing, and maintaining Java applications that are often high-volume and low-latency.
• Identify bottlenecks and bugs, and devise solutions to these problems
Skills: • Expert hands on knowledge of latest technology, good exposure to web technologies and open to all technologies like Java, J2EE, Spring boot , Microservices, Cloud computing, any DB • Very good exposure to DevOps concepts and tools, Continuous Integration and Continuous Delivery • Quick learner, believes in continuous learning and acts as a catalyst for building the culture within the organization • Analytical thinking skills, problems solving with strong exposure to root causing tools and techniques and ability to come up with solutions in complex situations.
• Solid understanding of object-oriented programming
• Familiar with various design and architectural patterns
• Skill for writing reusable Java libraries
• Experience with both external and embedded databases
• Understanding fundamental design principles behind a scalable application
• Proficient understanding of code versioning tools, such as Git
• Familiarity with build tools such as Ant, Maven, and Gradle • Deep insight of Java and JEE internals such as memory management, transaction management, etc. • Implementation of API. • Problem solving skills, analytical mind, and a positive attitude. • Experience with test-driven development. • Experience in the Spring, Spring Boot, and Hibernate • Knowledge of developing REST API. • Results oriented and focused on meeting deliverable timelines. • Good communication skills • Problem-solving attitude • Ability to establish priorities • Teamwork and willingness to listen to others • Eagerness to learn new ideas, concepts, and technologies. • Understand Java EE Architecture
• Clear understanding of web services and SOA related standards like REST/OAuth/JSON • Good knowledge of MicroServices. • Expertise developing enterprise-level web applications and RESTful APIs using MicroServices, with demonstrable production-scale experience. • Working experience in Industry Standard protocols related API Security • Strong background working with Linux/UNIX environments. • should have hands-on experience in developing software with agile or scrum methodologies and are ready to lead our junior developer's team.
Knowledge, Skills and Abilities :
- Strong OO design and coding skills using multiple stacks, and knowledge of the pros and cons of each
- 1+ years’ experience with Golang
- 6+ years application development experience
- Strong data design skills, using both SQL and NoSQL data stores
- Experience with CI/CD pipelines such as Jenkins
- Experience working with event based distributed systems
- Experience working with services in a Dockerized environment
- Experience with Elasticsearch, Couchbase, Redis, and/or PostgreSQL a plus
- Requires 6+ years of related experience with a Bachelor’s degree; or 3 years and a Master’s degree; or a PhD with 2 years’ experience; or equivalent experience.
SpringBoot
Microservice
Spring
Hibernate
NP- Immediate to 15 Days
Location-Bangalore & Hyderabad (Post pendami)
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
- AWS - experience in extensive use of AWS offerings like Redis, Kafka etc.
- 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
Roles and Responsibilities:
- We are looking for software developers with hands-on experience in react, firebase, and UML for a Japanese company in New Delhi.
- You should be a passionate web developer, who will work as part of a core team to build best-in-class frameworks and web / mobile applications for Japanese clients.
- You will work under a native Japanese supervisor and contribute to designing and developing mobile and web applications.
- This is a great chance for learning and upgrading yourself in an international environment. You will help in developing software and application for our customers from various industries such as IT, manufacturers, finance, services, etc. Develop by using Java, C#, JavaScript,React.js, PHP, Python, Flutter, React Native, etc.
- Experience with frontend JavaScript, in conjunction with Typescript or Flow, and modern frameworks like React, React Native, Redux, and other JS libraries is an advantage.
- Experience as a full-stack engineer is an advantage.
- Self-directed, driven, and sharp.
- You'll be surrounded by teammates with deep experience in strategy, data, code, and design, hence a great chance to learn and upgrade your skills
- Experience with project management tools and Git is an advantage.
- Strong proficiency in HTML, CSS & JavaScript.
- Hand-on experience with react, firebase, UML.
- Should be a Japanese speaker JLPT N3, JLPT N2
We are looking for a highly motivated developer with at least 1+ years of strong hands-on experience in Java to join our startup. You would be playing a pivotal role in contributing to the initial tech stack. You would be further responsible for designing and implementing product requirements that are highly usable, scalable, extensible, and maintainable. You should be comfortable working across different technologies/frameworks that we work on - Microservices, Java, Spring, Spring Boot, MySQL, Kubernetes, AWS.
Responsibilities and Duties:
- Design and build scalable REST APIs on Spring Boot
- Develop, test, tune for performance and deploy microservices
- Collaborate with the team, optimize and refactor the back-end architecture
- Maintain high standards of quality for code, documentation and other deliverables
- Active cross-team coordination would be expected
What are we looking for?
- 1+ year experience in Core Java & backend technologies
- Good working knowledge of design patterns & OOAD
- Excellent analytical and problem-solving skills
- The skills that we consider: Java, MySQL/RDS, Spring/ Play, Maven, Redis, Kafka/SQS, Elasticsearch, AWS
- Experience in micro-services
- Previously worked in a startup









