Senior Software Engineer - Backend

Company Name – Wissen Technology

Group of companies in India – Wissen Technology & Wissen Infotech

Work Location - Senior Backend Developer – Java (with Python Exposure)- Mumbai

Experience - 4 to 10 years

Kindly revert over mail if you are interested.

Java Developer – Job Description

We are seeking a Senior Backend Developer with strong expertise in Java (Spring Boot) and working knowledge of Python. In this role, Java will be your primary development language, with Python used for scripting, automation, or selected service modules. You’ll be part of a collaborative backend team building scalable and high-performance systems.

Key Responsibilities

• Design and develop robust backend services and APIs primarily using Java (Spring Boot)
• Contribute to Python-based components where needed for automation, scripting, or lightweight services
• Build, integrate, and optimize RESTful APIs and microservices
• Work with relational and NoSQL databases
• Write unit and integration tests (JUnit, PyTest)
• Collaborate closely with DevOps, QA, and product teams
• Participate in architecture reviews and design discussions
• Help maintain code quality, organization, and automation

Required Skills & Qualifications

• 4 to 10 years of hands-on Java development experience
• Strong experience with Spring Boot, JPA/Hibernate, and REST APIs
• At least 1–2 years of hands-on experience with Python (e.g., for scripting, automation, or small services)
• Familiarity with Python frameworks like Flask or FastAPI is a plus
• Experience with SQL/NoSQL databases (e.g., PostgreSQL, MongoDB)
• Good understanding of OOP, design patterns, and software engineering best practices
• Familiarity with Docker, Git, and CI/CD pipelines

• Build campaign generation services which can send app notifications at a speed of 10 million a minute
• Dashboards to show Real time key performance indicators to clients
• Develop complex user segmentation engines which creates segments on Terabytes of data within few seconds
• Building highly available & horizontally scalable platform services for ever growing data
• Use cloud based services like AWS Lambda for blazing fast throughput & auto scalability
• Work on complex analytics on terabytes of data like building Cohorts, Funnels, User path analysis, Recency Frequency & Monetary analysis at blazing speed
• You will build backend services and APIs to create scalable engineering systems.
• As an individual contributor, you will tackle some of our broadest technical challenges that requires deep technical knowledge, hands-on software development and seamless collaboration with all functions.
• You will envision and develop features that are highly reliable and fault tolerant to deliver a superior customer experience.
• Collaborating various highly-functional teams in the company to meet deliverables throughout the software development lifecycle.
• Identify and improvise areas of improvement through data insights and research.

• 2-5 years of experience in backend development and must have worked on Java/shell/Perl/python scripting.
• Solid understanding of engineering best practices, continuous integration, and incremental delivery.
• Strong analytical skills, debugging and troubleshooting skills, product line analysis.
• Follower of agile methodology (Sprint planning, working on JIRA, retrospective etc).
• Proficiency in usage of tools like Docker, Maven, Jenkins and knowledge on frameworks in Java like spring, spring boot, hibernate, JPA.
• Ability to design application modules using various concepts like object oriented, multi-threading, synchronization, caching, fault tolerance, sockets, various IPCs, database interfaces etc.
• Hands on experience on Redis, MySQL and streaming technologies like Kafka producer consumers and NoSQL databases like mongo dB/Cassandra.
• Knowledge about versioning like Git and deployment processes like CICD.

MERN Stack Developer(Hyderabad Location)

BeyondScale is a technology company on a mission to democratise AI for small and medium-sized businesses (SMBs). We're building Sitara, an AI-powered ERP suite of micro-apps designed specifically for the service sector. Imagine a pocket CRM, a pocket POS, and a suite of essential tools—all streamlined for simplicity and powered by intelligent automation.

Responsibilities:

• Develop and maintain robust and scalable web applications using the MERN stack (MongoDB, Express.js, React, Node.js).
• Design and implement efficient RESTful APIs to power the frontend.
• Build reusable, testable, and efficient code.
• Collaborate with cross-functional teams to deliver high-quality products.

Required Skills:

• 1+ years of hands-on experience with JavaScript development.
• Strong proficiency in Node.js for backend development.
• Solid understanding of MongoDB or other NoSQL databases.
• Experience with React or similar frontend frameworks is a plus.
• Ability to write clean, maintainable, and well-documented code.
• Strong problem-solving and debugging skills.
• Passion for learning new technologies and best practices.

• must have experience in Java, Spring Boot, Microservices , Kafka, API
• Developing applications that demand high availability and concurrency.
• Good understanding of DevOps concepts and processes
• Ability to write structured and well documented code
• Good knowledge of working with third-party dependencies and debugging dependency conflicts.
• Knowledge of Unit Testing and Build tools.
• Team Leading & Mentoring for Senior Developers
• Retail domain experience is added advantage.

WHAT YOU WILL DO:

• Execute a full software development lifecycle (SDLC)
• Develop flowcharts, layouts, and documentation to identify requirements and solutions
• Write well-designed, testable, reusable code and libraries for future use
• Optimize the application for maximum speed and scalability
• Implement security and data protection
• Produce specifications and determine operational feasibility
• Integrate software components into a fully functional software system
• Develop software verification plans and quality assurance procedures
• Document and maintain software functionality
• Troubleshoot, debug and upgrade existing systems
• Deploy programs and evaluate user feedback
• Comply with project plans and industry standards
• Ensure software is updated with latest features

REQUIRED SKILLS & QUALIFICATIONS:

• Good knowledge of Core Java (Minimum Version 8)
• J2EE with a good understanding of Servlets and JSP
• Experience in Spring Modules – Spring IOC and AOP, Spring Boot (version 2 plus), JDBC
• Expertise in design and development of various web and enterprise – level applications using Java/J2EE technologies such as Spring, Hibernate, Rest services.
• Web Services (including SOAP, XML, XML Schema, JSON, and REST)
• Tools required: Maven,Eclipse, Github, and Swagger
• Good knowledge of SQL and Redis (NOSql)
• Ability to document requirements and specifications
• Proven work experience as a Software Engineer or Software Developer
• Ability to develop software in Java or any other OOPS languages
• Excellent knowledge of relational databases, SQL and ORM technologies (JPA2, Hibernate)
• Experience in developing Web Applications using at least one popular Web Framework (Spring)
• Experience with test-driven development
• Proficiency in software engineering tools

PREFERRED SKILLS & QUALIFICATIONS:

• A Bachelor’s Degree in Computer Science, Software Engineering, or other related fields.
• Eight to Ten years of Software Engineering or Software Development experience, preferably in a related field.

REPORTING: This position will report to HOD

EMPLOYMENT TYPE: Full-Time

LOCATION: Remote (Pan India) & In-Office – Jaipur, India

SHIFT TIMINGS:

Summer - 1:30pm-10:30pm IST

Winter    - 2:30pm-11:30pm IST

You will be building efficient, scalable & high performance microservices and applications which will power the network of thousands of retailers across the country and at the same time improve the efficiency and visibility of information flow in our supply chain systems.

Your core responsibilities:

• Create elegant, efficient and maintainable software to support and extend our current products.
• Solve complex architectural challenges when implementing new features.
• Integrate with databases, file systems, cloud services when delivering scalable solutions.
• Troubleshoot and fix reported customer issues, delivering software patches as needed.
• Assisting in making design decisions based on performance, scalability, security, and future expansion.
• Communicating and collaborating with management, product, QA teams.

What will help you thrive in this role?

• Degree in Computer Science, similar technical field of study or equivalent practical experience.
• 5+ years of experience as a Backend Engineer.
• Proficiency in web development using any of the languages: PHP, Python, Java, NodeJS or Golang.
• Should possess a solid grasp of object-oriented programming, system architecture & design, databases, development, and testing methodologies.
• Good in Design (HLD and LLD).
• Good in Database schema design.
• Good to have experience with AWS or Google Cloud or Azure and serverless architecture.
• Excellent verbal communication skills.
• Track record of delivering successful products as an engineer.
• Experience with large applications of some scale will be a plus.
• Ability to deep dive, understand & improve the legacy code.
• Domain knowledge of supply chain & retail industry is a plus.

Whom you will be sharing your work day with? 

• We are in the forefront of disrupting traditional retail & supply chain industry by building distributed systems
• We are hardcore open source lovers and believe in the strength of open source community.
• We believe technology can change the way information is consumed.
• We use a data driven approach to build new products and features.
• Build new tech solutions to improve business processes and enable our various departments to help service our teams better.
• We embrace and enable DevOps culture within the organisation.

And yes! We do have new furry friends coming to our office everyday.

Work Perks

• Hybrid work environment with flexibility to work from anywhere. 
• A great salary, commensurate with experience.
• Unlimited vacation policy which means Paid Vacations.
• A relaxed & flexible working atmosphere.
• Weekly parties (Unofficial).
• Paid outings to remote work locations and industry events/conferences.
• Paid Health Insurance for you and your loved ones.

Job Summary

Require a java developer having 2+ years of experience especially in Spring and Hibernate

Job Type: Full-time
Responsibilities and Duties
Java developer responsibilities include designing and developing high-volume, low-latency applications for mission-critical systems and delivering high-availability and performance
- Contribute in all phases of the development lifecycle
- Write well designed, testable, efficient code
- Ensure designs are in compliance with specifications
- Prepare and produce releases of software components
- Support continuous improvement by investigating alternatives and technologies and presenting these for architectural review
Key Skills
JEE, JPA2 , Hibernate
Required Experience and Qualifications
Proven hands-on Software Development experience
- Proven working experience in Java development
- Hands on experience in designing and developing applications using Java EE platforms
- Object Oriented analysis and design using common design patterns.
- Profound insight of Java and JEE internals (Classloading, Memory Management, Transaction management etc)
- Excellent knowledge of Relational Databases, SQL and ORM technologies (JPA2, Hibernate)
- Experience in the Spring Framework
- Experience in developing web applications using at least one popular web framework (JSF, Wicket, GWT, Spring MVC)
- Experience with test-driven development
Job Type: Full-time