
Senior Java Engineer - Ecommerce & Product
Job Title: Software Engineer / Senior Software Engineer – Java Backend
Experience: 5–10 Years
Location: Pune (Baner) – Work from Office (5 Days a Week)
About the Role :
We are looking for passionate Java Backend Engineers to build highly scalable, high-performance enterprise applications used by millions of users globally. The ideal candidate should have strong experience in Java, Microservices, Payment Gateway integrations, and Checkout platform development, with a product engineering mindset.
Candidates from FinTech, E-commerce, Payments, or Product-based companies will be preferred.
Key Responsibilities :
Design, develop, and maintain scalable backend applications using Java and Microservices.
Build secure, high-performance REST APIs and distributed services.
Develop and enhance Checkout platforms and Payment Gateway integrations for seamless payment processing.
Collaborate with Product, Architecture, QA, and DevOps teams throughout the SDLC.
Participate in system design, architecture discussions, and technical decision-making.
Ensure high code quality through unit testing, code reviews, and engineering best practices.
Build and support CI/CD pipelines and containerized deployments.
Troubleshoot production issues, optimize performance, and improve application reliability.
Mentor junior engineers and contribute to engineering excellence.
Required Skills :
5–10 years of backend development experience.
Strong expertise in Java, Spring Boot, Spring MVC, Hibernate/JPA.
Hands-on experience with Microservices Architecture.
Experience building RESTful APIs.
Strong knowledge of SQL/NoSQL databases.
Experience with Payment Gateway Integration (Stripe, Adyen, Razorpay, Worldpay, PayU, Checkout.com, etc.).
Hands-on experience developing Checkout and Payment Processing workflows.
Understanding of Payment Lifecycle, including Authorization, Capture, Refunds, Settlement, Webhooks, and Transaction Management.
Experience with Docker, Kubernetes, and containerized applications.
Good understanding of CI/CD pipelines using Jenkins or similar tools.
Familiarity with Git, Agile methodologies, and engineering best practices.
Strong problem-solving and debugging skills.
Preferred Skills :
Experience working in FinTech, Payments, E-commerce, or Product-based organizations.
Exposure to Cloud Platforms (GCP/AWS/Azure).
Experience with Kafka or event-driven architecture.
Knowledge of OAuth2, JWT, Keycloak, or similar authentication mechanisms.
Experience with Monitoring & Observability tools (Grafana, Prometheus, ELK, Splunk).
Performance tuning and scalability optimization experience.
Preferred Background :
Candidates from FinTech, Digital Payments, Banking Products, E-commerce, or Product Engineering companies.
Experience working on high-volume transaction systems handling secure payment processing and checkout experiences.

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About Wissen Technology:
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. We help clients build world class products.
Our workforce consists of 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 has grown its revenues by 400% in these five years without any external funding or investments. Globally present with offices 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.
We have been certified as a Great Place to Work® company for two consecutive years (2020-2022) and voted as the Top 20 AI/ML vendor by CIO Insider.
Over the years, Wissen Group has successfully delivered $650 million worth of projects for more than 20 of the Fortune 500 companies. 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’.
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. We have served clients across sectors like Banking, Ecommerce, Telecom, Healthcare, Manufacturing, and Energy.
Career Progression:
At Wissen Technology, your career growth is important for us. Therefore, we put in several efforts towards each employee’s career progression – to enable and empower them to grow within the company as well as to instill a sense of responsibility, loyalty, and trust.
There have been instances where a software engineer has grown from being an individual contributor to technical lead and now on the path to becoming a director responsible for growing revenues and profitability. We deeply value Ownership: taking responsibility, making it happen, not letting the ball drop, and being accountable.
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Resolves technical issues raised by the team and/or customer and manages escalations as
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creative solutions.
Write procedures for backup and disaster recovery.
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General networking skills, especially in the context of a public cloud (e.g. AWS – VPC,
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Strong understanding of SQL and NoSQL databases.
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Looking for Java Fullstack Developer with 4-5yrs of experience.
Job Rolre : Java Full Stack Developer
Experience : 4-5 yrs
Job Type : Permanent
Locations : Hyderabad/Bangalore/Chennai/Mumbai/Pune/Gurgaon
Notice Period : Max 30 Days
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- write Rest API (Should be strong in this area)
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- Understand the business complexities of airline & hotel domain and system integration, their business process
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JEE Technologies: Java,Servlet
Database: SQL.JDBC
Tools : GIT
Web Services: REST based API or XML based web services
Others : design Patterns, UML
Job Description
Qualifications
MCA or B.E/B.Tech
Experience
3+ years
Core Skill Sets:
1) Core Programming Language: JAVA 8
o Good command on basics/core.
o Sound knowledge of OOPS concept.
o Practical implementation using Collections.
o Problem solving skills using Collections/Java Beans/OOPS concept.
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o Knowledge of sql joins.
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o Basic idea of stored procedures.
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XML/JSON/CSV
o Knowledge of reading/writing XML/JSON/CSV documents.
Web-service
o Knowledge of writing web-service (REST Full).
Web Framework
o Struts 2/Spring.
Database Framework
o Hibernate (using Spring JPA would be preferable).
Maven
3) Web/Application Server: Apache/Tomcat/JBoss/Weblogic/Websphere
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4) OS Platform: Windows/Linux.
5) Development Tool: Eclipse.
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The employee would be responsible to build core and web-based applications having technical
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The employee would be responsible to write sql/procedures for the core/web-based application.
The employee would get a deep exposure on working with very good volume of data having such
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The employee would be very much responsible to work on standard technology in various parts
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About IRIS:
IRIS Business Services Limited is one of the first providers of full professional XBRL products and solutions to organizations globally. The company headquartered in Mumbai, India with international offices in United States, Singapore, United Kingdom, and the UAE.
IRIS is a direct member of XBRL International and XBRL US. The Company has over eighteen years of proven expertise in the financial information management space, providing customized technology solutions for data and content management, for the dissemination of information to investors and stock exchanges, and for effective content management to institutional clients.
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Experience working on Java, J2EE, Spring, Web Services (SOAP, REST), Design
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Knowledge of one or more modules: HYBRIS-OCC, HYBRIS-PIM, HYBRIS-
PROMOTIONS
Additional skills in SOA, ESB, JMS
Passionate about writing world-class code
High level of commitment to client satisfaction and agility
Collaborate with others and build positive working relationships
Possess a strong work ethic
Strong written and verbal communication skills









