
Exp- 3-10 years
Notice period- Serving notice period or immediete
Location-Bangalore
Required Skills and Qualifications
Backend:
• Strong programming skills in Core Java, Java 8+
• Experience with Spring Boot, RESTful APIs, Microservices architecture
• Good understanding of JPA/Hibernate, and SQL/NoSQL databases
Frontend:
• Proficient in React.js, JavaScript (ES6+), HTML5, CSS3
• Experience with Redux, React Hooks, and component-based architecture
• Familiarity with front-end build tools (Webpack, Babel, NPM)
Key Responsibilities
• Develop and maintain scalable backend services using Core Java / Spring Boot
• Design and implement responsive, high-quality front-end interfaces using React.js
• Integrate backend APIs with frontend components seamlessly
• Collaborate with product managers, architects, and QA to deliver quality software
• Ensure code quality through unit testing, code reviews, and performance tuning
• Troubleshoot and debug production issues as needed

About Wissen Technology
About
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.
With offices in 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.
Leveraging our multi-site operations in the USA and India and availability of world-class infrastructure, we offer a combination of on-site, off-site and offshore service models. Our technical competencies, proactive management approach, proven methodologies, committed support and the ability to quickly react to urgent needs make us a valued partner for any kind of Digital Enablement Services, Managed Services, or Business Services.
We believe that the technology and thought leadership that we command in the industry is the direct result of the kind of people we have been able to attract, to form this organization (you are one of them!).
Our workforce consists of 1000+ highly skilled professionals, with leadership and senior management executives who have graduated from Ivy League Universities like MIT, Wharton, IITs, IIMs, and BITS and with rich work experience in some of the biggest companies in the world.
Wissen Technology has been certified as a Great Place to Work®. 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.
Connect with the team
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Job Title: Full Stack Developer (Node.js + React.js)
📍 Location: Gurgaon (On-site)
🕒 Experience: 5+ Years
🕒 Working Days: 5 Days(Mon-fri)
Job Summary:
We are hiring a passionate and experienced Full Stack Developer proficient in Node.js and React.js for our client. The ideal candidate should have solid experience in designing scalable systems, writing optimized code, implementing role-based access control, handling task prioritization, and building robust web applications.
Key Responsibilities:
- Design scalable user management systems with role-based access and authentication.
- Develop backend services and REST APIs using Node.js.
- Build dynamic and optimized front-end applications using React.js and Redux.
- Handle async operations, task queues, and implement retry and prioritization logic.
- Optimize React components for performance using hooks and memoization.
- Ensure secure and scalable system design with proper error handling and authorization flows.
- Apply JavaScript concepts like closures, event loop, and async patterns in real-world scenarios.
- Collaborate with DevOps for basic CI/CD and deployment processes.
Mandatory Technical Skills:
- Frontend: React.js, Redux, JavaScript (ES6+)
- Backend: Node.js, Express.js
- Authentication & Authorization: JWT, OAuth2, Role-Based Access Control (RBAC)
- Task Management: Async/Await, Promises, Retry Mechanisms
- Database: MongoDB or PostgreSQL
- Version Control: Git
Soft Skills:
- Strong problem-solving and system design skills
- Ability to work independently and in a collaborative team
- Clear communication of technical ideas
- Ownership of tasks and components end-to-end
Focus Areas:
- System Design (User Management, Fault Tolerance, Load Distribution)
- JavaScript Core Concepts (Closures, Scope, Event Loop)
- React Optimization & Hooks
- Node.js Architecture & Async Programming
- Task Prioritization and Retry Logic
Key Responsibilities:
· Contribute to all stages of software development lifecycle
· Analyse user requirements to define business objectives
· Envisioning system features and functionality
· Define application objectives and functionality
· Ensure application designs conform with business goals
· Identify and resolve any technical issues arising
· Conducting software analysis, programming, testing, and debugging
· Manage Java and Java EE application development
· Develop documentation to help users
· Transforming requirements into stipulations
· Prepare and produce releases of software components
· Support continuous improvement, investigating alternatives and technologies, and presenting for architectural review
· Create & maintain monthly/weekly reports to track progress and performance.
Key Skills & Competencies:
· Proficiency in Java
· Core Java, J2EE, Spring MVC, Spring REST APIs, Spring Security, JSP, Web application, Redis, Oauth2, Angular, JQuery, Html, JavaScript
· Knowledge on MySQL
· Good experience in SQL server enabled understanding and write complex stored procedures
· Web frameworks like Spring Boot
Kitabeli is a Series A funded Indonesian online group buying platform that helps people connect
with like minded people who want to buy the same item/product at a discounted price.
The team is spread across India and Indonesia, and is led by experienced founders who have
founded, setup, scaled and exited businesses across India and Indonesia. We have raised our
first round of funding, and are growing extremely fast.
We are actively looking for Full Stack developers to join our team.
Job Duties and Responsibilities
We are looking for an experienced full-stack engineer to implement both back-end and frontend software solutions to serve both internal and external customers. The position entails
working in an agile team to develop Java- and React-based projects that support our system.
● Design, implement and test full-stack solutions using Java, Spring and React
● Design robust spring system that can support 2-5mil users.
● Work alongside other team members to integrate various components into finished
product
● Work closely with product owner to create stories
● Continuously create new and interactive features that would help to improve user
experience and user engagement.
● Assist with troubleshooting of issues as needed
● Participate in the design and architecture of software solutions
● Assist in developing and maintaining continuous integration pipelines
Skills required :
Spring/Spring Boot
● React
● Python (flask and Django)
● Hibernate
● Linux
● REST
● Kafka
● Mysql
● AWS
● ELK Stack (Elasticsearch)
● CI/CD Pipelines
Qualifications:
● 2+ years of experience in Java based technologies
● 1+ years of experience in Python
● Experience in designing databases and system architecture
● 1+ years of experience in Front end technologies like HTML, CSS, JavaScript and
ReactJs
We are hiring a Founding Engineer to anchor our engineering team. We’re looking for an enterprising and climate-conscious young engineer to build scalable financial systems and innovate on the future of climate finance. You will help build the first version of our product(s) and work
directly with our founders. The ideal candidate has demonstrated experience in product development at an early stage and an interest in climate tech. Bonus points if you’ve worked on marketplaces or lending products at a FinTech in a previous role.
Location: Hybrid / In-office (Mumbai) depending on preference
Role Type: Full-time
What you’ll be doing
• Lead the development of first product(s) across all phases of software and web
development including ideation, prototyping, design, production, and maintenance.
• Work closely with founders and internal/external stakeholders to build products, tools, and
services from scratch and deliver high-quality software solutions.
• Be actively involved in requirements gathering, customer interviews and the creation of
robust product solutions.
• Brainstorm and lay the foundations of the technology and architectural roadmap as well as
the development processes.
• Share your technical expertise to help the team make thoughtful and scalable design
decisions and identify performance bottlenecks to troubleshoot quickly.
• Manage product development priorities, deadlines, and deliverables.
• Hire and manage a small team of engineers (internal/outsourced).
• Ensure high-performant and responsive web applications and websites.
Skills & Qualities we’re looking for
Hard Skills
• Bachelor’s/Master’s degree in Computer Science (or equivalent experience).
• 4-7 years of experience as a full-stack developer (rare exceptions for highly skilled
developers) at a fast-paced, preferably early / growth stage start-up.
• Proficient with frontend technologies - HTML, CSS, JavaScript & ReactJS/VueJS.
• Proficient with backend technologies - Java/NodeJs/Golang/Python/Ruby.
• Hands-on experience working with any cloud AWS/GCP/Azure/DigitalOcean.
• Knowledge of codebases and version control systems (Git).
• Well-versed with SQL database design & RDBMS concepts.
• Strong arithmetic reasoning, logical and analytical thinking skills.
• Strong knowledge of code quality maintenance and performance analysis.
Soft skills
• Thoughtful problem-solving: We expect you to solve problems. Solving starts with a clear
and accurate understanding of the context. You can decompose tricky problems and work
towards a clean solution, by yourself or with teammates. You're comfortable asking for help
when you get stuck.
• Pragmatic and business-oriented: You care about the business impact of what you're
building, and you prioritise projects accordingly. You're not just going after cool stuff—you
understand the balance between craft, speed, and the bottom line.
• The right attitude toward a sense of urgency, risk, and ambiguity that comes naturally with
working at an early-stage startup.
• Clear communication skills so you can easily convey your thoughts, opinions, and feelings to
customers and teammates.
• Comfortable working in a fluid, growing organisation with minimal supervision.
• Not ideological about technology: To you, technologies and programming languages are
about tradeoffs. You may be opinionated, but you're not ideological and can learn new
technologies as you go.
• Equally effective in individual contributor or team management roles.
Bonus Points if you
• Have a genuine passion for our mission - to solve climate change and its challenges.
• Have worked on the creation of marketplace products/loan management systems (LMS) or
risk assessment solutions.
• Understand object-oriented design principles and design patterns.
• Are familiar with Authentication, Security, XSD, and System Integration concepts.
• Are proficient at product testing - with and without QA support.
• Have experience in agile software development methodologies.
• Have interests outside of technology - could be in any unrelated field (design, sports,
economics, business etc.)
Why Work with us
Aside from being a highly-motivated, mission-driven organisation we offer:
• Highly competitive salaries including attractive stock options.
• Flexibility with location (Remote / In-person) and working hours.
• 25-days paid leave every year + top-ups for key life events.
• Unlimited sick leave.
• Insurance for you and your spouse.
• A yearly learning allowance to go learn a new skill / develop new talent.
• A yearly allowance to use towards the improvement of your physical and mental health.

API Engineer
- Experience in building reusable, and modular UI components and ensure cross browser compatibility.
- 3+ years developing, deploying, and supporting web applications built on framework. like Django/ NodeJS/ ReactJS.
- Must have 3+ years of current experience in Python or Go
- Knowledge in writing automated tests
- Proficient in High Level Systems Integration Design
- Understanding of Accessibility and internationalization
- Proficient in source control using GitHub
- Experience with building and maintaining a SaaS product at scale
- Write code that is tested and testable and you take responsibility for the quality of the code you produce. You will be helping build the best user experience for our Anaplan platform.
- Work in a hybrid cloud infrastructure, considering the implementation of functionality through several distributed components and services.
- Express your positive energy and enthusiasm - cultural fit is a really big deal for us. we're looking for really committed people who love solving big problems and are self-motivated to get things done.
- Familiar with developing SaaS applications using Django, NodeJS, ReactJS for development, be an added plus.
Technical & Professional Requirements
- MERN stack developer should have the ability to translate Wireframes and PSD Designs into functional web apps.
- Binding of UI elements to JavaScript object models
- Creating RESTful services with Node.js
- MERN stack developer must have proven experience in front & back-end development
- Work in a cross-functional team to deliver a complete user experience
- Reactjs Nodejs developer must know MongoDB, Express, Node.js, & React.
- Write code that is cross-platform and cross-device compatible
- MERN full stack developer must have the ability to wear many hats and learn new technologies quickly
- Understanding & proficiency in REST APIs.
- Integration of data storage solutions [RDBMS, NoSQL DB]
Responsibilities & Skills
- MERN Fullstack eCommerce developer is responsible for writing reusable, testable, and efficient code
- Design and implementation of low-latency, high-availability, and performant applications
- Implementation of security and data protection
- MERN software developer must have good communication & interpersonal skills
Experience: 4 to 6 years prefreable.
- Build the front-end of applications through appealing visual design
- Good understanding of REACT application, Native Android, System architecture, and workflows
- Experience with function and class components, hooks and material UI, CSS, styled-components preferred
- Understanding of RESTful APIS, HTML/CSS, ES6 (variables and scoping, array methods), GIT, popular frontend development tools, CI/CD tools, DevOps
- Understanding in JavaScript, object model, DOM manipulation and event handlers, DataStructures, Algorithms, JSX
- Must have knowledge in Script frameworks ReactJS, Redux, jQuery and Android Language: Typescript/ JavaScript/ JAVA / XML
- Build reusable code and libraries for future use
- Good problem-solving, Open-minded team player, troubleshooting skills







