JavaMinimum 3+ Years of Core Java Programming with Collections Framework, Concurrent Programming, Multi-threading (Good knowledge in Executor service, Fork joins 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.
Shubham Vishwakarma
Full Stack Developer - Averlon
About Wissen Technology
About
The Wissen Group was founded in the year 2000. Wissen Technology, a part of Wissen Group, was established in the year 2015. Wissen Technology is a specialized technology company that delivers high-end consulting for organizations in the Banking & Finance, Telecom, and Healthcare domains.
With offices in US, India, UK, Australia, Mexico, and Canada, we offer an array of services including Application Development, Artificial Intelligence & Machine Learning, Big Data & Analytics, Visualization & Business Intelligence, Robotic Process Automation, Cloud, Mobility, Agile & DevOps, Quality Assurance & Test Automation.
Leveraging our multi-site operations in the USA and India and availability of world-class infrastructure, we offer a combination of on-site, off-site and offshore service models. Our technical competencies, proactive management approach, proven methodologies, committed support and the ability to quickly react to urgent needs make us a valued partner for any kind of Digital Enablement Services, Managed Services, or Business Services.
We believe that the technology and thought leadership that we command in the industry is the direct result of the kind of people we have been able to attract, to form this organization (you are one of them!).
Our workforce consists of 1000+ highly skilled professionals, with leadership and senior management executives who have graduated from Ivy League Universities like MIT, Wharton, IITs, IIMs, and BITS and with rich work experience in some of the biggest companies in the world.
Wissen Technology has been certified as a Great Place to Work®. The technology and thought leadership that the company commands in the industry is the direct result of the kind of people Wissen has been able to attract. Wissen is committed to providing them the best possible opportunities and careers, which extends to providing the best possible experience and value to our clients.
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Java
Spring Boot🧠 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.
JavaSpring BootJob Description:
1) Good experience in Java
2) Hands-on experience in Spring boot
3) Hands-on experience in Microservices
Scala
C++
C#Required Skills/Qualifications:
∙ B.Tech/MCA in Comput
Required Skills/Qualifications:
Any Backend Technology is acceptable
∙ B.Tech/MCA in Computer Science or equivalent with 1-3 years’ experience with server-side web application development.
∙ Extensive development experience using LAMP or MEAN stack, RESTful web services or Node.js, HTML and CSS.
∙ Good understanding of Data structures and Relational Databases like MySQL or NoSQL Databases like MongoDB.
∙ Experience working with services in AWS such as EC2, RDS, and ELBs and have knowledge of VPCs.
∙ Experience with server side and client side MVC frameworks, Kafka Ansilble,Jenkins.
∙ Exposure to Continuous Integration (CI) and Continuous Deployment (CD), automated testing and agile development methods.
∙ Understanding of Version Management Tools like GitHub.
er Science or equivalent with 1-3 years’ experience with server-side web application development.
∙ Extensive development experience using LAMP or MEAN stack, RESTful web services or Node.js, HTML and CSS.
∙ Good understanding of Data structures and Relational Databases like MySQL or NoSQL Databases like MongoDB.
∙ Experience working with services in AWS such as EC2, RDS, and ELBs and have knowledge of VPCs.
∙ Experience with server side and client side MVC frameworks, Kafka Ansilble,Jenkins.
∙ Exposure to Continuous Integration (CI) and Continuous Deployment (CD), automated testing and agile development methods.
∙ Understanding of Version Management Tools like GitHub.
JavaSpring BootB.Tech./ BE - Computer, IT, Electronics only
Required Skills:
- 3+ year of experience in Development in JAVA technology and springboot
- Strong Java Basics
- SpringBoot or Spring MVC
- Hands on experience on Relational Databases (SQL query or Hibernate) + Mongo (JSON parsing)
- Proficient in REST API development
- Messaging Queue (RabitMQ or Kafka
- Any Caching Mechanism
- Good at problem solving
Good to Have Skills:
- 3+ years of experience in using Java/J2EE tech stacks
- Good understanding of data structures and algorithms.
- Excellent analytical and problem solving skills.
- Ability to work in a fast paced internet start-up environment.
- Experience in technical mentorship/coaching is highly desirable.
- Understanding of AI/ML algorithms is a plus.
Spring BootJava
Amazon Web Services (AWS)PE Backend Developer
An opportunity to revolutionize the restaurant industry
Here, at Rebel Foods, we are using technology and automation to disrupt the traditional food industry. We are focused on building an operating system for Cloud Kitchens - using the most innovative technologies - to provide the best food experiences for our customers.
You will enjoy working with us, if:
- You are passionate about using technology to solve customer problems
- You are a software craftsman or craftswoman who is obsessed with high quality software
- You have a flair for good design and architecture
- You are unafraid of rearchitecting or refactoring code to improve it
- You are willing to dive deep to solve complex software issues
- You are a teacher and mentor
Our technology ecosystem:
- Languages: Java, Typescript, Javascript, Ruby
- Frameworks, environments: Spring Boot, NodeJS, ExpressJS
- Databases: AWS Aurora MySQL, MongoDB
- Cloud: AWS
- Microservices, Service Oriented Architecture, REST APIs, Caching, Messaging, Logging, Monitoring and Alerting
- CI/CD and DevOps
- Bitbucket, Jira
You will mostly spend time on the following:
- Leading the design and implementation of software systems
- Driving engineering initiatives across teams with a focus on quality, maintainability, availability, scalability, security, performance and stability
- Writing efficient, maintainable, scalable, high quality code
- Reviewing code and tests
- Refactoring and improving code
- Teaching and mentoring team members
We’re excited about you if you have:
- At least 8 years of experience in software development, including experience building microservices and distributed systems
- Excellent programming skills in one or more languages: Java, C#, C++, Typescript, Javascript, Python or Ruby
- Experience working in Cloud environments: AWS, Azure, GCP
- Experience building secure, configurable, observable services
- Excellent troubleshooting and problem-solving skills
- The ability to work in an Agile environment
- The ability to collaborate effectively within and across engineering, product and business teams
We value engineers who are:
- Crazy about customer experience
- Willing to challenge the status quo and innovate
- Obsessed with quality, performance and frugality
- Willing to take complete responsibility and ownership of results
- Team players, teachers, mentors
JavaSpring BootAmazon Web Services (AWS)· 3+ years of Java backed application development and implementation experience.
· Minimum of one year of experience in Cloud, AWS Engineering & Development .
· Demonstrated knowledge of Distributed and Scalable systems.
· Experience on AWS Services is a big plus, such as EC2, ECS, ECR, Lambda, Elastic Cache, API Gateway.
· Knowledge about API design standards, patterns and best-practices especially Swagger and OpenAPI 3.0, REST, SOAP, MQ, JSON, Microservices etc.
· Java Microservices, RESTful Web Services.
· Spring Boot, Spring Cloud, Hibernate.
· JMS, queues, JBoss/Wildfly.
· Tools - JUnit, Easymock, Mockito, Docker, Kubernetes, Teraform.
Go Programming (Golang)
PythonJava
Ruby on Rails (ROR)
NodeJS (Node.js)1. Work experience between 3 years to 9 years in building large scale high user traffic consumer facing applications with desire to work in a fast paced startup.
2. Knowledge on reactive and asynchronous programming is preferable. If you have worked with coroutines, goroutines, high concurrency or optimized number of threads for processing on your backend server you could be a good fit.
3. Extremely proficient at writing performant, scalable and production ready code in Kotlin, Java (8 or above, comfortable with concepts like lambda, streams, multithreading etc), Elixir, Rust, or Golang. Should be familiar with static code analysis, code coverage and code reviews.
4. Experience with NoSQL DBs like MongoDB, Cassandra, Redis or Aerospike is required. Knowledge of graph DBs like Neo4j is preferred.
5. Strong in algorithms, problem solving and data structures.
6. Knowledge of TDD and experience with building applications integrated with CI-CD pipelines (automated build, tests and deployments).
7. Exposure to micro-services with good understanding of containers, kubernetes, logging, alerting and monitoring. Inter services communication. Should know how to handle multiple versions of APIs.
JavaSENIOR SOFTWARE DEVELOPER (BACKEND DEVELOPMENT):
We are looking for a Java Developer with experience in building high-performing, scalable, enterprise-grade web applications.
You will be part of a talented software team that works on mission-critical applications. Java developer roles and responsibilities include managing Java/Java EE application development while providing expertise in the full software development lifecycle, from concept and design to testing.
Responsibilities
• Java developer responsibilities include designing and developing high-volume, low-latency applications for mission-critical systems and delivering high-availability and performance
• Contribute in all phases of the development lifecycle
• Write well designed, testable, efficient code
• Ensure designs are in compliance with specifications
• Prepare and produce releases of software components
• Support continuous improvement by investigating alternatives and technologies and presenting these for
architectural review
Requirements
• BS/MS degree in Computer Science, Engineering or a related subject from renowned (IITs, NITs, BITS etc) colleges
• Excellent aptitude, algorithmic and puzzle solving skills
• Proven hands-on Software Development experience
• Proven working experience of 2+ years in Java development
• Hands on experience in designing and developing applications using Java EE platforms
• Object Oriented analysis and design using common design patterns.
• Profound insight of Java and JEE internals (Classloading, Memory Management, Transaction management, Multi-Threading etc)
• Good knowledge of Relational Databases, SQL and ORM technologies (JPA2, Hibernate)
• Experience in the Spring Framework
• Experience in developing web applications using at least one popular web framework (JSF, Wicket, GWT,
Spring MVC)
• Experience with agile development
C++2. Linux OS, shell scripting, Batch Processing ( 7+ years)
3. Troubleshooting Large Scale applicaton ( 7+ years)
4. Java, SpringBoot, MicroServices ( 5+ years desirable – not mandatory)
5. Agile Development Experience ( 5+ years)
6. Complete Development Cycle ( Dev, QA, UAT, Staging) ( 5+ years)
7. OpenShift PaaS Environment ( 5+ years desirable, not mandatory)
8. Good Oral and Written Communication Skills ( 5+ years )
9. AWS Cloud experience desirable (5+ years)
Java
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Full Stack Developer - Averlon