
We are looking for a Java backend developer who would be working on the bleeding edge of technologies. We work primarily with a fully reactive stack powered by Spring Webflux and Reactive MongoDb Repository in AWS. Our services follow both event based approaches as well as workflow based depending on the use case.
Responsibilities
- Understand why a particular design was chosen and code accordingly
- Will have to deliver clean bug free unit tested code with minimal guidance
- Strive for continuous improvement by refactoring and applying best practices
- Learn and adapt to new technologies as necessary.
- Capable of working in both client side and server side technologies
Requirements
- Must have a Bachelor’s degree in computer science or equivalent
- Must have 2-3 years experience as a software developer
- Must be proficient in Core Java and Spring/Springboot. Knowledge of Webflux is not mandatory.
- Must have developed RESTful services
- Should understand git
Added Bonus
- Experience working with microservices
- Experience in a NoSql solution like MongoDB
- Experience working with Python

Similar jobs
Key Responsibilities:
- Design, develop, and maintain scalable backend applications using Java and Spring Boot.
- Build and consume RESTful APIs and ensure secure, reliable API integrations.
- Develop microservices-based architecture and deploy applications in cloud environments.
- Work with cloud platforms such as AWS/Azure/GCP for application deployment and management.
- Write clean, maintainable, and efficient code following best practices.
- Implement CI/CD pipelines and support DevOps practices.
- Optimize applications for performance, scalability, and reliability.
- Collaborate with cross-functional teams including frontend, QA, DevOps, and product teams.
- Participate in code reviews, technical design discussions, and architectural decisions.
- Troubleshoot production issues and provide timely resolution.
Required Skills & Qualifications:
- 5–10 years of hands-on experience in Java (Java 8 or above).
- Strong experience with Spring Boot, Spring MVC, Spring Data, Spring Security.
- Solid understanding of RESTful API design & development.
- Experience in microservices architecture.
- Hands-on experience with at least one cloud platform (AWS / Azure / GCP).
- Knowledge of containerization tools like Docker and orchestration tools like Kubernetes.
- Experience with relational and/or NoSQL databases (MySQL, PostgreSQL, MongoDB).
- Familiarity with CI/CD tools (Jenkins, GitHub Actions, etc.).
- Strong understanding of Git and version control practices.
- Good understanding of design patterns and object-oriented programming principles.
JOB DESCRIPTION
Experience: 5-8 years
Location: Mumbai
Wissen Technology is now hiring for a Java Developer - Bangalore with hands-on experience in Core Java, algorithms, data structures, multithreading and SQL. We are solving complex technical problems in the industry and need talented software engineers to join our mission and be a part of a global software development team. A brilliant opportunity to become a part of a highly motivated and expert team which has made a mark as a high-end technical consulting.
Required Skills:
- Exp. - 5-8 years
- Experience in Core Java and Spring Boot.
- Extensive experience in developing enterprise-scale applications and systems. Should possess good architectural knowledge and be aware of enterprise application design patterns.
- Should have the ability to analyze, design, develop and test complex, low-latency client- facing applications.
- Good development experience with RDBMS.
- Good knowledge of multi-threading and high-performance server-side development.
- Basic working knowledge of Unix/Linux.
- Excellent problem solving and coding skills.
- Strong interpersonal, communication and analytical skills.
- Should have the ability to express their design ideas and thoughts.
About Us:
At Wissen Technology, we deliver niche, custom-built products that solve complex business challenges across industries worldwide.
Founded in 2015, our core philosophy is built around a strong product engineering mindset—ensuring every solution is architected and delivered right the first time. Our commitment to excellence translates into delivering 2X impact compared to traditional service providers. How do we achieve this? Through a combination of deep domain knowledge, cutting-edge technology expertise, and a relentless focus on quality.
We don’t just meet expectations—we exceed them by ensuring faster time-to-market, reduced rework, and greater alignment with client objectives. We have a proven track record of building mission-critical systems across industries, including financial services, healthcare, retail, manufacturing, and more.
Wissen stands apart through its unique delivery models. Our outcome-based projects ensure predictable costs and timelines, while our agile pods provide clients the flexibility to adapt to their evolving business needs. Whether it’s AI/ML for unstructured data processing, cloud enablement, or data engineering, Wissen leverages its thought leadership and technology prowess to drive superior business outcomes. Our success is powered by top-tier talent. Our proprietary Interview Ninja platform ensures we hire the best, building high-performing teams that deliver unmatched results.
Today, Wissen Technology has a global footprint with 2000+ employees across offices in the US, UK, UAE, India, and Australia. Our mission is clear: to be the partner of choice for building world-class custom products that deliver exceptional impact—the first time, every time.
Website : www.wissen.com
Java Developer – Job Description
Wissen Technology is now hiring for a Java Developer - Bangalore with hands-on experience in Core Java, algorithms, data structures, multithreading and SQL. We are solving complex technical problems in the industry and need talented software engineers to join our mission and be a part of a global software development team. A brilliant opportunity to become a part of a highly motivated and expert team which has made a mark as a high-end technical consulting. Required Skills: • Exp. - 5 to 12 years. • Experience in Core Java and Spring Boot. • Extensive experience in developing enterprise-scale applications and systems. Should possess good architectural knowledge and be aware of enterprise application design patterns. • Should have the ability to analyze, design, develop and test complex, low-latency client facing applications. • Good development experience with RDBMS. • Good knowledge of multi-threading and high-performance server-side development. • Basic working knowledge of Unix/Linux. • Excellent problem solving and coding skills. • Strong interpersonal, communication and analytical skills. • Should have the ability to express their design ideas and thoughts. About Wissen Technology: Wissen Technology is a niche global consulting and solutions company that brings unparalleled domain expertise in Banking and Finance, Telecom and Startups. Wissen Technology is a part of Wissen Group and was established in the year 2015. Wissen has offices in the US, India, UK, Australia, Mexico, and Canada, with best-in-class infrastructure and development facilities. Wissen has successfully delivered projects worth $1 Billion for more than 25 of the Fortune 500 companies. The Wissen Group overall includes more than 4000 highly skilled professionals. Wissen Technology provides exceptional value in mission critical projects for its clients, through thought leadership, ownership, and assured on-time deliveries that are always ‘first time right’. Our team consists of 1200+ highly skilled professionals, with leadership and senior management executives who have graduated from Ivy League Universities like Wharton, MIT, IITs, IIMs, and NITs and with rich work experience in some of the biggest companies in the world. Wissen Technology offers 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. We have been certified as a Great Place to Work® for two consecutive years (2020-2022) and voted as the Top 20 AI/ML vendor by CIO Insider.
Responsibilities
Build distributed, highly available, and fault-tolerant applications using Java, Spring, Kafka, and other technologies
Build large-scale and highly available APIs, both internal and external
Build, deploy, release, and support applications in the early stages
Skills
Must have
Overall 10+ years of experience as a Java Developer
Core Java 10+ years
Good hands-on coding skills
Must have experience in investment banking-related projects
Should have working experience in Trading life cycle project
Spring framework 5+ years
Kafka or other messaging
Knowledge of key APIs: JPA, JTA, CDI, etc.
Knowledge of various design and architectural patterns
Understanding of microservices architecture
Containerization solutions (e.g. Docker, Kubernetes, OpenShift)
Building tools (e.g. Maven, Gradle)
Version Control (e.g. Git)
Continuous Integration systems (e.g. TeamCity, Jenkins)
Experience in the finance industry and work with the Fintech community
About Company:
The company is a global leader in secure payments and trusted transactions. They are at the forefront of the digital revolution that is shaping new ways of paying, living, doing business and building relationships that pass on trust along the entire payments value chain, enabling sustainable economic growth. Their innovative solutions, rooted in a rock-solid technological base, are environmentally friendly, widely accessible and support social transformation.
Requirements:
1. Java 8+, J2EE,
2. Core Java- More hands on collections framework
3. JPA- Spring, Hibernate
4. Webservices (SOAP / Rest)
5. Knowldege on SQL & PLQL (Oracle/MySQL)
6. Expericne in Agile tools & processes
7. Good analytical & Communication skills
About Rocketlane
https://rocketlane.com/">Rocketlane is a SaaS startup founded in April 2020 by https://www.linkedin.com/in/srikrishnang/">Srikrishnan Ganesan, https://www.linkedin.com/in/vignesh-girishankar/">Vignesh Girishankar, and https://www.linkedin.com/in/deepakbsub/">Deepak Balasubramanyam. Before Rocketlane, they built a successful in-app messaging startup that was acquired by Freshworks(NASDAQ: FRSH) in 2015.
Rocketlane launched in June 2021 and washttps://www.producthunt.com/posts/rocketlane"> #1 Product of the day on Product Hunt. It has a fast-growing, global customer base, including LinkSquares, AppCues, ContractPodAI, Chargebee, parcelLab, and many more.
Rapid early traction and customer love has catapulted Rocketlane to be recognized as a Leader in the G2 Category of Client Onboarding. Rocketlane has raised $21M in capital from global VCs such as 8VC, Nexus Venture Partners, Matrix Partners India, and super angels like Gokul Rajaram and Girish Mathrubootham.
Rocketlane offers a first-of-its-kind collaborative customer onboarding platform that enables businesses to onboard their customers better, faster, and smoother. It helps speed up revenue recognition and grow NRR for the vendor and enables faster time-to-value and a delightful customer onboarding experience.
What’s the opportunity?
Are you a backend developer looking to fast-track your learning and growth? Have you looked at world class products like Asana, Notion, or Airtable, and felt “I wish I were part of the early team that built these products”?
At Rocketlane, we’re a team that has previously built and rolled out globally successful SaaS products used by tens of thousands of customers. We’re laser focused on delivering a world class product again, and looking for an ambitious backend engineer to join our existing team of 9 engineers.
If it excites you to think of a fast-paced start-up environment, building something big from scratch, breaking down new problems, creating new APIs, working on performance issues, getting hands-on with devops initiatives, and showcasing demos of your work every Friday with a happy and passionate team, then this is the right opportunity for you.
Some of the tech problems you get to work-on as a backend engineer would be to build the backend for a modern spreadsheet experience from scratch, work on infra as code, write robust code that is fault tolerant, work on performant code that adheres to SLOs set by the organization.
About you:
- 3 - 7 years of experience
- Expertise in the following areas
- Java
- HTTP Protocol
- You’ve heard of or worked with some of the following tech stacks / products
- Spring
- PostgreSQL
- Redis
- Docker
- Message brokers
- GitHub
- These non-functional areas are familiar to you
- Performance
- Debugging
- Log management
Nice to have:
- Familiarity with AWS
What’s in it for me?
- Great opportunity: Rocketlane genuinely cares about everyone we hire. You’ll learn new things and grow no matter how experienced you are; you will be working with founders who have more than three decades of collective experience in building significant B2B SaaS startups.
- Great team: Work with a world-class, high-velocity team that truly embodies the values of empathy, curiosity, and customer-centricity. Check out thehttps://www.linkedin.com/feed/hashtag/?keywords=rocketlane_meet_the_team"> MTT(Meet The Team) videos on our LinkedIn.
- Great culture: An open, fun, and exciting startup culture that empowers its people to champion big problems with the freedom to think and innovate.
- Growth: You could easily and quickly transition into other sales roles you might like.
- Impact: You get to be part of a global, passionate team in a fast-paced and growth-oriented environment. The team has a work philosophy of being high on ambition, ownership, and a bias for action.
- Monetary rewards and benefits: Competitive stipend, flexible leave policy, and more!
comprehensive solutions; solve complex business problems and then directing the implementation of these solutions
through a team of developers. Work with the various teams to analyze and assess implementation methodology.
Identify & communicate the technical infrastructure requirements. Support existing business process automations and implement change requirements as part of a structured change control process
Responsibilities:
Leading and managing team of developers.
Integration of user-facing elements developed by a front-end developer with server-side logic.
Building reusable code and libraries for future use
Optimization of the application for maximum speed and scalability
Implementation of security and data protection
Design and implementation of data storage solutions
Skills and Qualifications:
Overall 6-8 years of experience in multi-tiered application development and leadership
Strong Programming fundamentals. (Must have - Java)
Good Knowledge in cloud technologies like AWS, Azure, etc.
Hands on experience on Spring technology including Springboot, SpringMVC, Spring Security and others.
Good understanding on experience on microservice development using Springboot REST web services using
Spring Rest or Jersey SQL NoSQL DB
Hands on with Unit testing Dynamic and proactive with ability to work as part of a multi-disciplinary team
Good communications skills fluent in English
Ability to communicate effectively across different disciplines
Primary Skills (Good toHave)
Java, Spring Boot, Spring MVC, Restful Web Services, Micro Services
Education: B.Tech/B.E, BCA, MCA, MCS, etc. in Computers
Location: Hyderabad, India
Nisum is a leading global digital commerce firm headquartered in California, with services spanning digital strategy and transformation, insights and analytics, blockchain, business agility, and custom software development. Founded in 2000 with the customer-centric motto “Building Success Together®,” Nisum has grown to over 1,400 professionals across the United States, Chile, India, and Pakistan. A preferred advisor to leading Fortune 500 brands, Nisum enables clients to achieve direct business growth by building the advanced technology they need to reach end customers in today’s world, with immersive and seamless experiences across digital and physical channels.
What You’ll Do
Coding in Java8, Spring, Microservices, WebFlux/Reactive Programing, Rest services, Kafka, PCF, Azure, Spring Cloud Config and NoSQL technologies.
Solve technical problems using cutting-edge technologies and best practices.
Ensure code meets the required development standards and is optimized for performance.
Unit testing for each line of new code introduced (JUnit/Mockito)
Peer code review process using GIT pull requests and Crucible (for SVN)
Propose multiple solutions to a problem, show how one option is better than another.
Ensure all aspects of technical design are correctly incorporated.
Contribute in research and implementing POC’s as required.
Collaborating with onsite team in scrum ceremonies.
Who you are
Senior developer using technical skills in Java8, J2EE, Spring boot(rest services), Web Services(Rest & SOAP), WebFlux, Spring Cloud Config, Maven/Gradle, JUNIT/TestNG, Mockito/JMock/EasyMock, JIRA, XML, JSON, EhCache/MemCache/Redis with skills in JMS, Kafka
Experience with hands on any one of the cloud platforms like PCF, Azure
Need hands on skills using NoSQL databases (Cassandra, MongoDB), SQL(Oracle/DB2/MySQL)
Experience with UI development skills to the level of debugging and enhancements.
Experience with expertise in code quality and coding standards.
Need to applying different design patterns, especially GoF, J2EE and Integration design patterns.
Making sure implementing unit testing for each line of new code introduced (JUnit/Mockito).
Ensuring the code meets the required development standards and is optimized for performance.
Education
Bachelor’s / Master’s degree in specific technical fields like computer science, math, statistics preferred; or equivalent practical experience.
• Must have good knowledge of Java and J2EE
• Experience working with Java Frameworks (Spring, Strut)
• Experience working with RESTful web services (JSON, JWT)
• Experience working with front-end Java script app and frameworks
• Experience with XML and JSON
• Experience with Vert.x is a plus










