
Job Description – Java Developer
Role: Java Developer
Location: Pune / Mumbai
Experience: 5 to 10 years
Required Skills:
We are looking for an experienced Java Developer with strong expertise in Core Java, Spring, Spring Boot, and Hibernate. The candidate should have solid experience in designing, developing, and deploying enterprise-grade applications, with strong understanding of OOPs concepts, data structures, and algorithms. Hands-on experience with RESTful APIs, Microservices, and Database technologies (MySQL/Oracle/SQL Server) is essential.
The ideal candidate should be well-versed in version control systems (Git), build tools (Maven/Gradle), and CI/CD pipelines (Jenkins). Exposure to cloud platforms (AWS/Azure/GCP) and containerization (Docker/Kubernetes) will be a strong plus.
Key Responsibilities:
- Design, develop, and maintain scalable and high-performance applications.
- Write clean, reusable, and efficient code following best practices.
- Collaborate with cross-functional teams to deliver quality solutions.
- Perform code reviews, debugging, and performance tuning.
- Ensure application security, reliability, and scalability.
Good To Have Skills:
- Knowledge of front-end technologies (JavaScript, Angular/React).
- Familiarity with Agile/Scrum methodologies.
- Strong problem-solving and analytical skills.

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
Similar jobs
Job Title : Frontend Developer (React + Three.js)
Location : Noida
Experience : 2+ Years
Job Description :
We are looking for a Frontend Developer with strong skills in React.js and Three.js to build interactive, high-performance 3D web applications. The role involves creating smooth 3D experiences, optimizing performance, and collaborating with cross-functional teams.
Key Responsibilities :
- Develop responsive and dynamic UIs with React.js/Next.js.
- Implement and optimize 3D visualizations using Three.js/WebGL.
- Manage 3D assets (GLTF/GLB, textures, compression).
- Ensure performance optimization, cross-browser compatibility, and scalability.
- Collaborate with designers and backend teams to deliver seamless experiences.
Required Skills :
- JavaScript/TypeScript, React.js/Next.js
- Three.js / WebGL for 3D rendering & interactions
- State management (Redux, Zustand, Context API)
- 3D asset pipeline (GLTF/GLB, textures, compression tools)
- Performance optimization (profiling, draw calls, FPS tuning)
- API integration (REST/GraphQL)
- Version control (Git)
React.js Developer Responsibilities:
● Identifying web-based user interactions.
● Developing and implementing highly responsive user interface components using react
concepts.
● Writing application interface codes using JavaScript following React.js workflows.
● Troubleshooting interface software and debugging application codes.
● Monitoring and improving front-end performance.
React.js Developer Requirements:
● In-depth knowledge of JavaScript, CSS, HTML, and front-end languages.
● Knowledge of REACT tools including React.js, Webpack, Enzyme, Redux, and Flux.
● Experience with browser-based debugging.
● Excellent troubleshooting skills
.
Job Location - Bangalore
We are seeking an experienced UI Developer with a strong background in Next.js to join our dynamic development team. The ideal candidate will have a deep understanding of front-end technologies, particularly React and Next.js, and will be responsible for creating high-performance, user-centric web applications. If you're passionate about building intuitive, scalable, and responsive UI components, we'd love to meet you!
Key Responsibilities:
Design and develop responsive and visually appealing user interfaces using Next.js, React, HTML5, CSS3, and JavaScript.
Collaborate closely with designers, product managers, and back-end developers to implement and refine user experiences.
Build reusable components and front-end libraries for future use.
Optimize web applications for maximum speed and scalability.
Write clean, maintainable, and efficient code while adhering to best practices.
Stay up to date with the latest trends, tools, and techniques in web development.
Troubleshoot and debug application issues.
Ensure cross-browser and cross-device compatibility.
Participate in code reviews and mentor junior developers.
Skills & Qualifications:
Experience: 5–8 years of hands-on experience in front-end development with a focus on Next.js.
Proficiency in Front-End Technologies:
Strong knowledge of Next.js, React.js, and other JavaScript libraries and frameworks.
Expertise in HTML5, CSS3, and JavaScript (ES6+).
Familiarity with TypeScript is a plus.
Experience in building responsive, cross-browser compatible websites.
Familiarity with RESTful APIs and integration with back-end systems.
Knowledge of modern web development practices like Webpack, Babel, CSS preprocessors (Sass/SCSS), etc.
Understanding of web performance optimization techniques.
Experience with version control systems such as Git.
Familiarity with agile development methodologies.
Classplus is India's largest B2B ed-tech start-up, enabling 1 Lac+ educators and content creators to create their digital identity with their own branded apps. Starting in 2018, we have grown more than 10x in the last year, into India's fastest-growing video learning platform.
Over the years, marquee investors like Tiger Global, Surge, GSV Ventures, Blume, Falcon, Capital, RTP Global, and Chimera Ventures have supported our vision. Thanks to our awesome and dedicated team, we achieved a major milestone in March this year when we
secured a “Series-D” funding.
Now as we go global, we are super excited to have new folks on board who can take the rocketship higher🚀.
Do you think you have what it takes to help us achieve this? Find Out Below!
What will you do?
You will be our go-to person when it comes to ensuring that Classplus’ digital architecture functions smoothly. Though not a traditional customer-facing role, your work will be reflective of our brand quality as a whole.
With so much riding on your shoulders, we’ll need you to: -
• Guide the team in the implementation of visual elements from computer users' vantage points within a web application and translation of UI/UX design wireframes to actual code
• Design and implement low-latency, highly available and performing applications that scale for millions of users, and assure that all user input is validated before submitting to the back-end
• Develop application code and unit test in the Javascript technologies for the application development center
• Work with Test-Driven development, help define architectures and design patterns, and actively participate in PR reviews on GitHub
You should apply, if you
• Bring your A-game: Have knowledge of advanced JavaScript libraries and frameworks, such as ReactJS, NextJS, VueJS, and experience with rendering techniques and writing high performing code
• Offer guaranteed efficiency: Have a good understanding of SEO principles and ensuring that application will adhere to them, and server-side CSS pre-processing platforms, such as LESS and SASS
• Show promising experience: Have a good understanding and exposure to serverside rendering, and asynchronous request handling, partial page updates, and AJAX
• Show proficiency: Display in-depth understanding of code versioning tools, such as (Git / Mercurial / SVN), and cross-browser compatibility issues and ways to work around them
Being a Part of the Clan!
At Classplus, you’re not an “employee” but a part of our “Clan”. So, you can forget about being bound by the clock as long as you’re crushing it workwise😎. Add to that some passionate people working with and around you, and what you get is the perfect work vibe you’ve been looking for!
It doesn’t matter how long your journey has been or your position in the hierarchy (we don’t do Sirs and Ma’ams); you’ll be heard, appreciated, and rewarded. One can say, we have a special place in our hearts for the Doers! ✊🏼❤️
Are you a go-getter with the chops to nail what you do? Then this is the place for you
Nexus Business Solutions Pvt. Ltd. is hiring a Web/ Front-End Developer, who will play a key role in our company.
Responsibilities:
- Conceptualizing creative ideas with the team.
- Create PSDs including colors and fonts for the visual layout of the web
- Design engaging and responsive landing
- Testing and improving the design of the
- Implement and maintain high-quality SEO policies and features on
- Good understanding of content management
- Preparing design plans and presenting the website
- Optimizing sites for maximum speed and scalability across devices e. desktop, mobile, and tablet
- Proficient understanding of cross-browser compatibility
- Liaising with back-end developers to ensure web and app logic is properly integrated
- Communicate with marketing and research teams to incorporate brand elements and relevant market research findings into
Qualifications & Requirements:
- Bachelor’s in Computer Science, Graphic Design, or related field, or 4+ years’ additional experience
- Excellent hands-on experience in HTML, CSS, jQuery, JavaScript, WordPress, and API web integration
- Proficiency in Graphic design software including Adobe Photoshop, Adobe Illustrator, Adobe Premiere Pro, Craldraw and other visual design
- Professional portfolio with at least 3 (Live Projects) designs for internal review.
Location: Delhi/NCR
Job Type: Permanent
Exp: 4 to 6 years
Salary: Negotiable
- Hands on Expert in UI/Front End Engineering/Development specifically React,
- Redux, NodeJs who can code, design and own front end development and code.
- Experience in React v16, Reach Redux, React Fibre and JavaScript advance (ES6+),
- Experience in Advance State Management [Example: Redux, Mobx, RxJs, GraphQL etc]
- Good experience on UI framework like Angular JS/ Vue JS/ Ext JS/jQuery/ React JS or equivalent SPA framework
- Experience in HTML5, Javascript CSS3, ExpressJs, GraphQL
- Strong understanding of Rest APIs, Web Sockets, Service Workers, HTTP/S Protocol, Web Security and Cloud Infrastructure, CI/CD, Web Packaging and Optimization, UX and Styling.
- Expertise in Advance Java-Scripts
- Knowledge and experience with Data Structure and Design methodologies.
- Problem solving skill
- Good experience working in Agile/Scrum teams
- Good written and verbal communication skills.
- Developing application codes and unit tests in Angular, Java Technologies, and Rest Web Services.
- Bridging the gap between graphic design and technical implementation
- Building reusable code and libraries for future use
- Optimize application for maximum speed and scalability
- Collaborate with back-end developers for coding, building RESTful APIs and troubleshooting
- Ensure high-quality graphic standards and brand consistency
- Experience in CSS, HTML, Angular and writing cross-browser compatible code
- Basic understanding of client-side scripting and JavaScript frameworks, including jQuery
- Experience working with code versioning tools, such as Git, Mercurial or SVN
- Familiarity with browser testing and debugging
- Good understanding of SEO principles and best practices
- Ability to work independently with minimal supervision and comfortable working in a fast-paced environment

- Instrumental in preparing SRS, detailed design document, case diagrams, data flow diagrams, class diagrams.
- Scripting and Programming for varied solutions.
- Constructing specifications and determine operational feasibility.
- Deploy programs and evaluate user feedback & experience on application deployment.
- Writing database script procedures, function & triggers.
- Must be well versed with software development lifecycle (SDLC) management with different project methodologies especially Agile methodology (Scrum).
- Strong Oops concepts, Entity Framework, Design Patterns bootstrap, Web/Windows Services knowledge.
- Working knowledge on C#, ASP.NET, MVC 4.0/5.0, LINQ, Javascript, JQuery, bootstrap, Web/Windows Services.
- Good to have knowledge of Angular JS.
- Must have worked on database like SQL Server/ MySQL.
- Working knowledge on google maps API or GIS would be an added advantage.
- 5-7 years of IT experience. B.E./B.Tech. in Computer Science/ IT or MCA would be preferred.
- Excellent oral and written communication skills.
- Candidate should hold 60% & above in 10th, 12th and Graduation
What we're looking for
AdPushup is an award-winning ad revenue optimization platform and Google Certified Publishing Partner (GCPP), helping hundreds of web publishers grow their revenue using cutting-edge technology, premium demand partnerships, and proven ad ops expertise. Our team is a mix of engineers, marketers, product evangelists, and customer success specialists, united by a common goal of helping publishers succeed. We have a work culture that values expertise, ownership, and a collaborative spirit.
Your Day-to-Day Tasks Include:
Ship product, independently and/or as part of a small team
Collaborate with other engineers to build new features
Debugging using dev consoles, firebug, firecookie, or any of your favorite tools. Help troubleshoot production issues and resolve critical customer facing issues Provide top-notch support to our customers
You Should Have:
3+ years of experience with React.
A strong body of prior front end work, including significant projects written in React and Redux. Mastery of JavaScript; expertise in most of the following technologies, and proficiency in all of them: CSS3, HTML5, AJAX.
Deep understanding of closures, prototypal inheritance, HTTP, web security, cross browser compatibility challenges.
Experience with NodeJS and Express JS will be a plus
Hands-on with a code management system like GIT, SVN.
Experience with NoSQL databases, preferably CouchDB or CouchBase.
Good to have: Experience with Typescript.









