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Company Name – Wissen Technology
Group of companies in India – Wissen Technology & Wissen Infotech
Work Location - Bangalore/Mumbai
Java Developer – Job Description
Wissen Technology is now hiring for a Java Developer - Mumbai 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+ 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.
Java back end developer
Chennai
3+yrs
3 to 5 years Java,
Sprint Boot, Hibernate,
REST API Design Patterns SQL,
Oracle,
Table design
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

Hands-on experience with RESTful services, API design are must.
Knowledge of microservices architecture is must.
Knowledge of design patterns is a must.
Strong knowledge of Exception handling and logging mechanism is a must.
Agile scrum participation experience. Work experience with several agile teams on an application built
with microservices and event-based architectures to be deployed on hybrid (on-prem/cloud)
environments.
Good knowledge of Spring framework (MVC, Cloud, Data and Security. Etc) and ORM frameworks like JPA/Hibernate.
Experience in managing the Source Code Base through Version Control tools like SVN, GitHub,
Bitbucket, etc.
Experience in using and configuration of Continuous Integration tools Jenkins, Travis, GitLab, etc.
Experience in the design and development of SaaS/PaaS-based architecture and tenancy models.
Experience in SaaS/PaaS-based application development used by a high volume of
subscribers/customers.
Awareness and understanding of data security and privacy.
Experience in performing Java Code Reviews using review tools like SonarQube, etc.
Good understanding of end-to-end software development lifecycle. Ability to read and understand
requirements and design documents.
Good Analytical skills and should be self-driven.
Good communication with interpersonal skills.
Open to learning new technologies and domains.
A good team player and ready to take up new challenges. Active communication and coordination with
Clients and Internal stakeholders
Requirements: Skills and Qualifications
6-8 years of experience in developing Java/J2EE-based Enterprise Web Applications
Languages: Java, J2EE, and Python
Databases: MySQL, Oracle, SQL Server, PostgreSQL, Redshift, MongoDB
DB Script: SQL and PL/SQL
Frameworks: Spring, Spring Boot, Jersey, Hibernate and JPA
OS: Windows, Linux/Unix.
Cloud Services: AWS and Azure
Version Controls/ DevOps tools: Git, Bitbucket and Jenkins.
Message brokers: RabbitMQ, and Kafka
Deployment Servers: Tomcat, Docker, and Kubernetes
Build Tools: Gradle/Maven
We are scaling rapidly in user engagement (reached 150K+ daily transactions within 3 months of beta launch), and if you're looking to deal with scale, this is for you.
About Trago.in: We are a neo-trading platform where one can trade their opinions on real-time events across politics, Sports. We are building in a super-interesting category with a focus on things happening around you and giving the audience a platform to earn from opinions and knowledge.
We are a seed-funded company with marquee investors from across the globe and an amazing set of co-founders from the premier institutes of India.
To know more about us, please visit: www.trago.in
Responsibilities:
* Build the APIs and internal mechanisms of the Trago backend across all our services.
* Architect and guide building end-to-end systems optimized for speed and scale.
* Build and lead engineering teams to achieve product roadmap milestones.
* Oversee the research and development of new products and technologies.
* Be available for troubleshooting in case of backend emergencies.
Requirements:
* Bachelors in Computer Science or any Engineering domain with experience in Software Programming.
* 2-5 years of experience building large-scale software applications.
* Highly proficient with Java and knowledge of the many intricacies of Spring Boot.
* Proficient with MongoDB and Redis.
* Knowledge of Aerospike, and other databases would be a bonus. Good understanding of distributed systems (servers, databases, etc.).
* Positive and solution-oriented mindset and comfort working in a highly agile, intensely iterative software development environment.
What's in for you?
* Work directly with founders
* Freedom to experiment and get creative.
* Be Yourself, every day.
* Build for scale - We are building Trago with a mindset to scale to 100 mn+ customers in 3 years. We are presently doing 150K transactions a day, which we will scale by 100x in one year.
Involvement in the full software development life cycle within broadly defined parameters and providing software solutions keeping into consideration the software quality needs
Design and defining the interaction between the different component pieces
Write efficient code based on brief given by team lead.
Fast prototyping of proof-of concept features / application based on brief.
Develop and maintain new features on Java stack
Own the delivery of an entire piece of a system or application
Management and execution against project plans and delivery commitments
Work closely with the peers and Leads to develop the best technical design and approach for new product development
Build software solutions for complex problems.
Compliance with build/release and configuration management process
Responsibility to develop unit test cases for his/her project module.
Execution of appropriate quality plans ,project plans ,test strategies and processes for development activities in concern with business and project management effort
Desired Profile:
GoodunderstandingofObjectOrien
Development across multiple browsers/platforms on Website
Good Understanding of SQL/NoSQL data stores
Fair Understanding of Responsive High Level Designs
Work experience in product/start-up company is a plus
Familiarity to MVC, SOA, RESTFull web services
Work with other teams and manage time across multiple projects and tasks in a deadline driven, team environment
Good to have knowledge of Javascript (AngularJS/ReactJS)/HTML/CSS/
Understand agile methodology and instill best practices into the process.
Role/ Responsibilities
- Design APIs, DB, Queues, monitoring for micro services.
- Writing, deploying and managing micro services.
- Migrate existing components into distributed micro service architecture.
- AWS Cloud / Google Cloud Platform (Manage Infrastructure).
- API integration with 3rd parties.
- Unit test cases, automation.
- Database optimisation.
- Design of highly concurrent backend architecture.
- Handling high traffic data.
Experience required:
- Sound fundamentails in software design.
- Must have worked on distributed and micro service architecture.
- Sound fundamentals on scale/ performance/ memory optimisation.
- Sound fundamentals of authentication, authorization, payment processes, data security.
- Must have experience in Spring / Spring boot.
- Good to have experience in Kafka / JMS / RabbitMQ / AWS Elastic queue.
- Good to have experience in Junit / mockito unit test cases.
- Good to have knowledge in Mysql (or any RDBMS).
Job Description:
- Must have experience of 1 – 6 years.
- Experience in Java/J2EE platform.
- Experience in web application development with JSP, Servlet, Spring Boot, Hibernate
- Knowledge of MySQL database.
- Developed REST and SOAP web services..
- Experience in version control system and build tool
- Must have completed BE/MCA/M.Sc/MTech.
- Well versed in Core Java, OOPs concepts, collections, multi-threading, concurrency, lambdas, and streams.
- Hands-on knowledge of Spring Core, MVC, JPA, Security, transaction
- Working knowledge of REST API designing as well as development, using Spring.
- Exposure to Spring Boot, Docker, Kubernetes, OpenShift for the microservices environment.
- Savvy with SQL and database concepts.
- Ability to use frameworks like JUnit, Mockito, etc., for implementing unit testing.
- Sound understanding of code versioning tools, such as Git/bit bucket with Maven.
- Should have worked in a CI/CD environment with TeamCity/Jenkins.
Requirements :
- 3+ years of professional software development experience
- 2+ years of object-oriented Java/J2EE hands-on development
- Spring (MVC, IOP/DI, REST, Security) & Hibernate/Spring
- REST web services
- Anyone of the messaging solutions like Kafka, RabbitMQ
Desirables :
- SQL, No SQL concepts
- Experience of Redis or/and Mongo DB
- Agile methodology
- Experience leading or working with cross geography teams
- Unix, shell scripting & Build Systems
Bonus :
- Microservice design and development experience
- Android application development experience
- Experience in performance optimization is an added advantage
- Full SDLC experience (requirements gathering, architecture, development, QA, etc.)
Responsibilities :
- You will be working with the Supply Chain Management team building a leading eCommerce platform for Asian markets
- Order Promising system, promising the order delivery promise date to customer by applying the constraints on current resource availability across different steps in the supply chain. This system needs to scale for thousands of requests per minute with few million seconds of response time
- Warehouse and Inventory Management system, this system needs to scale to processing huge number of orders across different warehouse.
- Transportation and Logistics Management, involves planning and delivery of huge number orders to end customer. This system has the workflows to manage first mile, line haul and last mile delivery to customer
- Inventory Planning, helps in tracking different selling behaviours of the items and triggers / helps planners to replenish, promote, markdown or place inventory at right place to cut down the on hand inventory requirements
- You will be actively involved during the entire technology development lifecycle. Responsibilities will include all aspects from design, coding review, coding, unit testing, end user feedback cycle changes and manging and scaling the system in production.
- Primary role in leading software development teams
- The customized solutions that you will be architecting and developing will also require knowledge and experience with spring / Hibernate, SOAP / REST, microservices and SQL.
- Ability to learn new technologies quickly and willingness to read and digest large existing source code and take ownership on complex component or subsystem to drive improvements and re-architecture
- Work with a team of amazing developers and designers involved in the design and development of global platforms
- Invent and prototype new features, build, test and ship them to customers as SaaS, cloud-based or hosted product platforms
- Drive the implementation of new technologies that improve our ability to build great customers products.
- Participate in a fun, open learning environment with great benefits and smart talented folks that represent among the best globally.
Qualification :
- A Bachelors degree in Computer Science (or equivalent experience)
- M-Tech or advanced degree a plus
- Hackathon participation, hands-on programming capability, competitive programming is a plus

