
- Good design skills and exposure to multiple software architectures.
- Strong understanding of OO/ knowledge of frameworks such as Spring/ Spring Boot/ design and good software development practices.
- Strong core server-side technologies experience (Java).
- Knowledge of Android is a huge plus.
- Strong database skills including schema design.
- Strong knowhow of data-structures and algorithms.
- Experience with configuration management, testing, deployment.
- Hands on development across technologies.

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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.
It is a SaaS startup founded in April 2020 by Srikrishnan Ganesan, Vignesh Girishankar, and Deepak Balasubramanyam. Before Rocketlane, they built a successful in-app messaging startup that was acquired by Freshworks(NASDAQ: FRSH) in 2015.
They launched in June 2021 and was #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. They 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.
We 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.
Description:
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 backendfor 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:
● 2 - 4 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
Benefits
Rocketlane genuinely cares about everyone we hire. You’ll learn new things and grow no matter how
experienced you are. If you are eager, check out the MTT(Meet The Team) videos on our LinkedIn.
Benefits of working at Rocketlane include:
● Competitive salary in a fast-growing startup.
● MacBooks are our standard, but we’re happy to get you whatever equipment helps you get
your job done
● Comprehensive health insurance for you and your dependents
● Flexible leave policy so you can take time off when you need it
Paid time off
Requirements
- 2+ years of experience in the Development of JAVA technology.
- Strong Java Basics
- Linux
- SpringBoot or Spring MVC
- Hands-on experience in Relational Databases (SQL query or Hibernate) + Mongo (JSON parsing)
- Proficient in REST API development
- Messaging Queue (RabitMQ or Kafka)
- Microservices
- Java 8
- Any Caching Mechanism
- Good at problem-solving
Good to Have Skills:
- 2+ 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 AI/ML algorithms is a plus.
What You will do
● Create beautiful software experiences for our clients using design thinking, lean and agile methodology.
● Work on world-class software products using the latest cutting edge technologies and platforms.
● Work in a dynamic, collaborative, transparent, non-hierarchical culture.
● Work in collaborative, fast-paced and value-driven teams to build innovative customer experiences for our clients.
● Help to grow the next generation of developers and have a positive impact on the industry.
Basic Qualifications
● Experience: 4+ years.
● Hands-on development experience in backend, Java, SprintBoot, Hibernate, SQL, MongoDB, Jenkins, Microservices etc...
● Server-side development experience mainly in JAVA.
● Passion for software engineering and follow the best coding concepts. ● Good to great problem solving and communication skills.
● Experience in working with cross-border, distributed teams is a must.
Nice to have Qualifications
● Product and customer-centric mindset.
● Great OO skills, including design patterns.
● Experience with large-scale enterprise systems
Required skills:-
- 2+ years of experience in the Development of JAVA technology.
- 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)
- Microservices
- Any Caching Mechanism
- Good at problem-solving
Good to Have Skills:
- 2+ 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.
Job Description:
Excellent Java development skills using J2EE, J2SE, Servlets, JSP, JDBC, Java, Spring, Springboot, Hibernate, Microservices, Webservices, Extensive experience designing, developing RESTful APIs, coding experience with either Java/J2EE/Spring, Good SQL knowledge
Required experience in Core Java, Spring, Springboot, Hibernate, Microservices, rest services
Able to understand SDLC process, Extensive experience designing and, developing RESTful APIs, Extensive coding experience with either Java/J2EE/Spring
Qualification Any Graduate
Java Developer Job Description
We are looking for a Java developer responsible for building Java applications.
Responsibilities
- Design, build and maintain efficient, reusable, and reliable Java code
- Identify bottlenecks and bugs, and devise solutions to these problems
- Help maintain code quality, organization, and automatization.
Skill Set:
- Proficient in Java, with a good knowledge of its ecosystems
- Java, Rest API integration, JSON, XML, Oracle, Microservices, Agile Scrum.
- Experience in developing large-scale distributed systems.
- API knowledge
- Solid understanding of object-oriented programming
- Familiar with various design and architectural patterns
- Skill for writing reusable Java libraries
- Spring, Spring Boot, Spring Cloud, React native
- Experience: 04 to 10 years
- Salary: As Per Market
Architects are responsible for driving Technology & Best Practices in Engineering. We are a rapidly growing & constantly improving organisation. We seek very high levels of ownership in all individuals, especially leadership roles like this - Ownership of your team, your product. Going beyond your role & contributing to make the organisation & business better is an expectation.
Responsibilities:
- Actively participate in development along with team members for as much as 50% of their time, creating modules & systems that can then be treated as a working reflection of the best practices.
- Participating in code reviews, design reviews, architecture discussions.
- Being responsible for Scaling, Performance & Quality for the team
- Setting up best practices to help the team achieve the above and constantly thinking about improving the technology use are your responsibilities.
- Driving the adoption of these best practices around coding, design, quality, performance in your team and influence them for the entire organisation are also expectations from you.
- Experiment with new & relevant technologies and tools, and drive adoption while measuring yourself on the impact you are able to create
- Collaborate with Product Management and Product Development leaders in developing product visions and strategies.
- Define & drive implementation of long term technology vision for your product & team
- You will be the primary owner of the architecture of your product and will also be responsible for getting it reviewed, and making sure the system is built accordingly.
- Be an evangelist for technology & represent in external forums.
- Creating architectures & designs for new solutions around existing and new problem spaces
- Drive technology & tool choices for your team & be responsible for them.
Requirements:
- Quick & Excellent Problem solving skills for complex & large scale problems
- Exposure to a wide variety of problem spaces, technologies
- Very Strong System design and OO skills with a nifty ability to craft clean interfaces and operate at the right levels of abstraction
- Solid coding skills with ability to drive teams through massive refactoring exercise & improve coding standards across large code bases
- Deep knowledge, understanding & experience of working with a large variety of multi-tier architectures.
- Awareness of pitfalls & use cases for a large variety of solutions
- Deep understanding & experience of high performance web scale & real-time response systems with experience & expertise in a variety of large scale persistent systems including large databases
- Exposure to complete product development cycles - From inception to production to scaling up, supporting new requirements, re-architectures the Principle architects should have seen it all and ideally in multiple cycles.
- Should have been part of scalable product development cycles with either large data handling or large transaction processing exposure for 5 years
- Must have worked in a small setup (either a startup or a small & reasonably independent team)
- 8+ years of overall experience
- B Tech or higher in Computer Science or equivalent required
Must have skills : Experience with Core Java, Microservices, Oracle Database and SpringBoot.
Roles & Responsibility :
- Build new decentralized microservices based on decoupled Kafka architecture
- Thorough understanding of fundamentals including OOP, Design Patterns and Data Structures
- Good knowledge of design principles
- Produce clean, efficient code based on specifications
- Recommend and implement improvements
- Has proven ability to work independently or with minimal supervision
- Drive design discussions while also working with architects if a need arises
Required Skills :
- Experience building software applications professionally using Java.
- Strong understanding of troubleshooting methodologies and root cause analysis
Soft skills required :
- Excellent interpersonal and written communication skills.
- Able to pre-empt, identify and resolve problems that are non-routine or lacking in definition
- Ability to define, implement and work to a schedule
- Good time management skills.
- Attention to detail. Able to work with little or no supervision
- Ability to work with team members across the globe
- Experience with Core Java, Angular and SpringBoot is a plus.
Educational Qualifications : B.E./ ME (CS/EE) / MCA or equivalent higher-level degree









