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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. - 4 to 7 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.
Job Description: Senior Full-Stack Engineer (MERN + Python )
Location: Noida (Onsite)
Experience: 5 to 10 years
We are hiring a Senior Full-Stack Engineer with proven expertise in MERN technologies and Python backend frameworks to deliver scalable, efficient, and maintainable software solutions. You will design and build web applications and microservices, leveraging FastAPI and advanced asynchronous programming techniques to ensure high performance and reliability.
Key Responsibilities:
- Develop and maintain web applications using the MERN stack alongside Python backend microservices.
- Build efficient and scalable APIs with Python frameworks like FastAPI and Flask, utilizing AsyncIO, multithreading, and multiprocessing for optimal performance.
- Lead architecture and technical decisions spanning both MERN frontend and Python microservices backend.
- Collaborate with UX/UI designers to create intuitive and responsive user interfaces.
- Mentor junior developers and conduct code reviews to ensure adherence to best practices.
- Manage and optimize databases such as MongoDB and PostgreSQL for application and microservices needs.
- Deploy, monitor, and maintain applications and microservices on AWS cloud infrastructure (EC2, Lambda, S3, RDS).
- Implement CI/CD pipelines to automate integration and deployment processes.
- Participate in Agile development practices including sprint planning and retrospectives.
- Ensure application scalability, security, and performance across frontend and backend systems.
- Design cloud-native microservices architectures focused on high availability and fault tolerance.
Required Skills and Experience:
- Strong hands-on experience with the MERN stack: MongoDB, Express.js, React.js, Node.js.
- Proven Python backend development expertise with FastAPI and Flask.
- Deep understanding of asynchronous programming using AsyncIO, multithreading, and multiprocessing.
- Experience designing and developing microservices and RESTful/GraphQL APIs.
- Skilled in database design and optimization for MongoDB and PostgreSQL.
- Familiar with AWS services such as EC2, Lambda, S3, and RDS.
- Experience with Git, CI/CD tools, and automated testing/deployment workflows.
- Ability to lead teams, mentor developers, and make key technical decisions.
- Strong problem-solving, debugging, and communication skills.
- Comfortable working in Agile environments and collaborating cross-functionally.
- Accurately recording details of customers’ purchase orders.
- Processing all customer purchases accordingly.
- Generating promising leads to pursue.
- Managing customer accounts by ensuring that existing customers remain satisfied with the company's services.
- Developing and sustaining solid relationships with customers to encourage repeat business.
- Understanding in-depth knowledge to make suitable recommendations based on customers' needs and preferences.
- Continually meeting or exceeding daily and monthly targets with respect to call volume and sales.
This wellness platform is revolutionising primary health and wellness in India.
- Creating strategies to drive sales through ecommerce marketplaces like Amazon, Flipkart, Nykaa, Healthkart etc
- Categorizing, listing and positioning the company’s products in various Ecommerce marketplaces such as Amazon and Flipkart and generating interest in the same for the right audience.
- Recommending, managing and executing online content and promotional campaigns to increase the company’s business and in turn increase the revenue.
- Being responsible and managing various operational activities such as merchandising, post listings, customer service etc. related to the company’s e-commerce presence.
- Researching, analyzing and providing insights on online shopping trends of customers and reporting the same to the management.
- Addressing and resolving customer issues and concerns in a timely manner and ensuring excellent customer service. Also collecting and working on the feedback given by customers in the marketplaces regarding the company’s products.
- Monitoring the business performance on the e-commerce marketplaces and reporting the same along with recommendations to the management.
- Updating and maintaining e-commerce sales data and reporting the same to the management in regular intervals
- Ensuring compliance of related laws & regulations while managing various contracts, disclaimers, agreements etc. Also, participating in the planning/forecasting of relevant budgets.
- Working closely with various internal teams as well as external third-party stakeholders.
Desired Candidate Profile
What you need to have:- Graduation is a must.
- Relevant experience of 4-8 years in e-commerce marketplace sales
- Proficient with marketplace portals like Amazon and Flipkart.
- Excellent knowledge of prevailing procedures and techniques in e-commerce.
- Hands-on experience in managing and maintaining e-commerce websites/portals.
- Excellent communication, analytical, multi-tasking and negotiation skills.
• Javascript, Angular 2.0, React, React Native, Angular Ionic (optional), JQuery, MYSQL,
MongoDB, Firebase.
• Comfortable with REST API development using Java or python.
• Exposure to Artificial Intelligence / Machine Learning concepts will be a plus.









