
We're looking for a high-energy Java engineer to design and implement scalable microservices using Spring Boot. You'll collaborate across teams to deliver clean, efficient, and high-performance backend services.
š ļø Key Responsibilities
- Design, develop, and maintain RESTful services and microservices using Spring Boot
- Utilize OOP, Java Collections, Exception Handling, and method overloading/overriding in modern coding practices
- Build and optimize multithreaded systems (Threads, synchronization, wait(), notify(), yield()) for performance and scalability
- Write unit and integration tests (JUnit, Mockito, Spring Test) to ensure code quality
- Collaborate with cross-functional teams (QA, DevOps, Product) through code reviews and feature planning
- Diagnose and resolve performance bottlenecksJVM tuning, SQL/caching optimizations
- Adhere to coding standards, best practices, and participate in peer code review
šÆ Required Skills & Experience
- Strong Java fundamentals: OOP, Collections, Generics, Exception Handling
- Concurrency mastery: multithreading, synchronization primitives (wait(), notify(), yield())
- Spring Boot: solid experience building, testing, deploying REST APIs
- Microservices: design, inter-service communication, stateless service patterns
- Testing frameworks: JUnit, Mockito, Spring Test
- Performance tuning: profiling, optimization with JVM settings and database queries
- Tools & practices: Git, Maven/Gradle, CI/CD pipelines, Docker/Kubernetes (plus)
- Soft skills: strong problem-solving, collaboration, and effective communication

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 WorkĀ®. 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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Company Description
NonStop io Technologies, founded in August 2015, is a Bespoke Engineering Studio specializing in Product Development. With over 80 satisfied clients worldwide, we serve startups and enterprises across prominent technology hubs, including San Francisco, New York, Houston, Seattle, London, Pune, and Tokyo. Our experienced team brings over 10 years of expertise in building web and mobile products across multiple industries. Our work is grounded in empathy, creativity, collaboration, and clean code, striving to build products that matter and foster an environment of accountability and collaboration.
Role Description
This is a full-time hybrid role for a Java Software Engineer, based in Pune. The Java Software Engineer will be responsible for designing, developing, and maintaining software applications. Key responsibilities include working with microservices architecture, implementing and managing the Spring Framework, and programming in Java. Collaboration with cross-functional teams to define, design, and ship new features is also a key aspect of this role.
Responsibilities:
ā Develop and Maintain: Write clean, efficient, and maintainable code for Java-based applicationsĀ
ā Collaborate: Work with cross-functional teams to gather requirements and translate them into technical solutionsĀ
ā Code Reviews: Participate in code reviews to maintain high-quality standardsĀ
ā Troubleshooting: Debug and resolve application issues in a timely mannerĀ
ā Testing: Develop and execute unit and integration tests to ensure software reliability
ā Optimize: Identify and address performance bottlenecks to enhance application performanceĀ
Qualifications & Skills:
ā Strong knowledge of Java, Spring Framework (Spring Boot, Spring MVC), and Hibernate/JPAĀ
ā Familiarity with RESTful APIs and web servicesĀ
ā Proficiency in working with relational databases like MySQL or PostgreSQLĀ
ā Practical experience with AWS cloud services and building scalable, microservices-based architectures
ā Experience with build tools like Maven or GradleĀ
ā Understanding of version control systems, especially GitĀ
ā Strong understanding of object-oriented programming principles and design patternsĀ
ā Familiarity with automated testing frameworks and methodologiesĀ
ā Excellent problem-solving skills and attention to detailĀ
ā Strong communication skills and ability to work effectively in a collaborative team environmentĀ
Why Join Us?Ā
ā Opportunity to work on cutting-edge technology productsĀ
ā A collaborative and learning-driven environmentĀ
ā Exposure to AI and software engineering innovationsĀ
ā Excellent work ethic and cultureĀ
If you're passionate about technology and want to work on impactful projects, we'd love to hear from you
Responsibilities:
ā¢Ā Design, develop, and maintain web applications using Java and React JS.
ā¢Ā Collaborate with cross-functional teams to define, design, and ship new features.
ā¢Ā Ensure the performance, quality, and responsiveness of applications.
ā¢Ā Identify and correct bottlenecks and fix bugs.
ā¢Ā Maintain code integrity and organization.
ā¢Ā Build reusable components and front-end libraries for future use.
ā¢Ā Translate designs and wireframes into high-quality code.
ā¢Ā Optimize components for maximum performance across a vast array of web-capable devices and browsers.
ā¢Ā Participate in team meetings and discussions to understand user needs and functionalities.
ā¢Ā Perform code reviews and improve and maintain code quality.
ā¢Ā Work closely with product management and back-end developers to integrate user-facing elements with server-side logic.
ā¢Ā Keep up-to-date with the latest industry trends and technologies to ensure applications are current and competitive.
Requirements:
ā¢Ā Strong proficiency in Java.
ā¢Ā Familiarity with RESTful APIs and web services.
ā¢Ā Good project management skills.
ā¢Ā Strong communication and teamwork abilities.
Key Responsibilities:
- Rewrite existing APIs in NodeJS.
- Remodel the APIs into Micro services-based architecture.
- Implement a caching layer wherever possible.
- Optimize the API for high performance and scalability.
- Write unit tests for API Testing.
- Automate the code testing and deployment process.
Skills Required:
- At least 3 years of experience developing Backends using NodeJS ā should be well versed with its asynchronous nature & event loop, and know its quirks and workarounds.
- Excellent hands-on experience using MySQL or any other SQL Database.
- Good knowledge of MongoDB or any other NoSQL Database.
- Good knowledge of Redis, its data types, and their use cases.
- Experience with graph-based databases like GraphQL and Neo4j.
- Experience developing and deploying REST APIs.
- Good knowledge of Unit Testing and available Test Frameworks.
- Good understanding of advanced JS libraries and frameworks.
- Experience with Web sockets, Service Workers, and Web Push Notifications.
- Familiar with NodeJS profiling tools.
- Proficient understanding of code versioning tools such as Git.
- Good knowledge of creating and maintaining DevOps infrastructure on cloud platforms.
- Should be a fast learner and a go-getter ā without any fear of trying out new things Preferences.
- Experience building a large-scale social or location-based app.
Required Skills:
- 3+ year of experience in Development in JAVA technology.
- Strong Java Basics
- SpringBoot or Spring MVC
- Hands on experience on Relationl Databases (SQL query or Hibernate) + Mongo (JSON parsing)
- Proficient in REST API development
- Messaging Queue (RabitMQ or Kafka)
- Microservices
- Any Caching Mechanism
- Good at problem solving
Good to Have Skills:
- 4+ 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.
- Bachelor's degree in Computer Science or a related field with 2-5 years hands-on experience with Java based open source tech stack
- Expertise in Core Java, Data Structures, J2EE with proven expertise in Spring MVC, Spring boot, Microservices architecture, Web Services (Rest) in distributed systems
- Practical experience with MySQL and /or NoSQL databases like Couchbase, DynamoDB, Cassandra
- Practical experience with Caching frameworks Memcached/Redis, Message Queues (JMS, RabbitMQ)
- Practical hands-on experience in JavaScript UI preferred
- Experience in building high performance, high availability REST APIs and REST clients
- Expertise with log file analysis using one or more of ELK, or Splunk
- Prior experience with CI/CD, Container architecture - Docker/Jenkins and build scripts Maven/Ant
- Prior experience in transformation to cloud platforms is preferred
- Experience with Kafka is a definite plus
- Experience with building analytics pipeline and analytics DB is a plus
- Strong practical experience in applying design patterns, multithreading concepts to solve complex problems, strong problem solving skills
HBOX is a US Based Digital Health Company, Enabling Primary Care Providers (PCP) to
capture true Virtual Care Opportunities beyond Telehealth. We enable PCP to
provide Proactive and Continuous Care and add new Recurring monthly revenue
streams without any upfront cost. With our unique distribution and business
model, we are seeing fast acceptance and great adaption with our target
customers. We have built unique and Industry's first Integrated
Hardware, Cloud & AI Technologies based Virtual care Platform for PCP
Market. We are US focused Post revenue company with customers in 7 US States
and growing extremely fast.
Ā
We want a techie at heart. Someone who is happy and curious to work on all aspects of software development. Reporting directly to the CTO, you will be responsible for feature design, development, and continuously optimizing our tech stack.
We are looking for an experienced software engineer with at least 5 years of experience in a startup or product environment. Ideally you have been involved in all aspects of software development from requirements gathering to design, development, deployment and post-release support. We are looking for all-round technical maturity. Our tech stack is Angular, Spring boot and Django/Python.
Ā
Key Skills
Java SpringBoot, PostgreSQL/MySQL, Git
AWS, REST api design, Experience integrating with external APIs
Good applied understanding of Object Oriented Programming
Good database modeling and SQL knowledge.
Anticipate how code will perform under production conditions
Understand the performance characteristics of commonly used data structures (maps, lists etc). (Optional) Experience with UI frameworks like: AngularJS/React is a big plus.
Ā
Responsibilities and Duties
Build out features across the stack: backend, API design and integration, database optimization, microservices, plugins, queues etc
Fix bugs and write automated tests
Maintain and upgrade our Tech Stack
Translate requirements to design and write/present articulate software design.


- Minimum 1-year experience is mandatory
- Proven Software Development Skills in Laravel Framework and Core PHP
- Good knowledge and experience in OOPS concepts and Core PHP
- Good Database designing skills in MySQL
- Experience in known APIs like Google, Facebook, etc.
- Knowledge of JavaScript, JQuery, JASON, AngularJS will help
- Passion for Software Development and Coding
- Good Knowledge and Experience in WordPress will help.
Required Knowledge and technical skills:
- Expert level experience designing and buildingĀ web servicesĀ using Java
- Hands on experience in frameworks like struts , springs, hibernate
- Experience with multiple database platforms
- Experience withĀ high volume, mission critical applications
- Experience building distributed systems at Internet scale
- Knowledge of commonly usedĀ design patterns
- Prior experience building internet platformsĀ from the ground up
- Understanding Microservices patterns and architectures, enterprise design and industry best practices.
Required Qualities/ personal skills:
- StrongĀ written and verbalĀ communication skills
- Strong interpersonal skills and time management skills
- StrongĀ analytical and troubleshooting skills
- Experience working in anĀ AgileĀ environment
- Experience working in a fast-paced delivery environment

Software engineering takes the central roles for building products and systems. You will be responsible for designing, building, improving, or maintaining our web applications, third-party data integration, data API, backend systems, or working with monitoring tools and infrastructure may work on our search engine including scoring and relevance, reservation engine, automated pricing engine, business process engine, data applications, devops-related applications, and other
new projects.
You will work in cross-functional teams and meet great people regularly from top tier technology, consulting, product, or academic background. We work in open environment where there are no boundaries or power distance. Everyone is encouraged to speak their mind, propose ideas, influence others, and continuously grow themselves. Get the exposure to multi-aspect, collaborative, intensive startup experience with our recent expansion into Southeast Asia and exploration of new product
Qualifications
ļ· Having minimal 3 years of experience in software engineering, application development, or system development
ļ· Excellent understanding of software engineering concepts, design patterns, and algorithms
ļ· Comfortable working up and down the technology stack
ļ· Curiosity to explore creative solutions and try new things
ļ· Bachelors' degree in Computer Science or equivalent from a reputable university

