ReactJs Developer (Immediate Joiner)

Job Title: Senior Software Engineer – Frontend

About the Role

We are looking for a highly skilled Senior Frontend Engineer to join our fast-growing product engineering team. As a senior contributor, you will play a key role in designing, building, and scaling modern, intuitive, and performant web applications that delight our users. You will collaborate closely with product managers, designers, and backend engineers to bring ideas to life—while mentoring junior engineers and driving best practices across the frontend discipline.

Key Responsibilities

• Build & Deliver: Design, develop, and maintain high-quality, scalable, and responsive web applications using React.js and modern JavaScript/TypeScript.
• Own the Frontend: Drive architecture decisions, contribute to reusable component libraries, and ensure the frontend stack remains cutting-edge.
• Collaborate: Work with cross-functional teams (Product, Design, Backend) to translate business needs into elegant technical solutions.
• Performance & UX: Optimize applications for maximum speed, responsiveness, accessibility, and seamless user experience.
• Best Practices: Champion code quality through code reviews, automated testing, CI/CD pipelines, and documentation.
• Mentorship: Provide technical guidance, support, and mentorship to junior and mid-level engineers.
• Innovation: Stay current with frontend technologies, tools, and frameworks, continuously improving how we build software.

What We’re Looking For

• Bachelor’s degree in Computer Science, Engineering, or related field (or equivalent experience).
• 5–8 years of professional experience in frontend or full-stack software development.
• Deep expertise in React.js, JavaScript (ES6+), and modern frontend ecosystems (Webpack, Babel, NPM/Yarn, etc.).
• Solid understanding of data structures, algorithms, and software design patterns.
• Strong experience with unit testing, debugging, and performance profiling.
• Familiarity with RESTful APIs, and micro-frontend architectures is a plus.
• Experience working in Agile/Scrum environments.
• Excellent problem-solving skills, with strong attention to detail and a focus on delivering value.
• Strong communication and collaboration skills, with a passion for teamwork.

Why Join Us

• Opportunity to own impactful projects end-to-end, from ideation to deployment.
• A culture that values technical excellence, continuous learning, and innovation.
• Work alongside talented engineers and thought leaders in a fast-paced, growth-oriented environment.
• Competitive compensation, flexible work options, and comprehensive benefits.

We are seeking a highly motivated Software Development Engineer with expertise in building scalable, extensible and user-friendly web applications. You will work with a fast paced Product Engineering team to build efficient and reusable web applications for mobile and fixed devices. 

What you’ll do:

• Architect, Design, Code reviews and build scalable applications.
• You will be engaged in identifying and addressing performance bottlenecks, and collaborate with other team members to innovate current/new products. 
• Identify, communicate and implement best practices for application engineering. 
• Ensure high scalability and performance

• You will advocate for good, clean, well-documented and performing code; define and follow standards and best practices for front-end development.

We’d love for you to have:

• Experience: 1-3 yrs recent experience of working in a scalable web product firm
• Education: B.Tech/M.Tech  in Computer Science from Top ranked colleges in India
• Excellent software development skills in developing web applications over client-side frameworks - Backbone, React (preferred) and/or angular frameworks (preferred); and server-side frameworks like node.js
• Excellent programming skills in object-oriented, modularised JavaScript, Typescript (preferred)
• Strong knowledge and working experience in server-side Event-driven programming using Node.js
• Excellent programming skills in Javascript,  jQuery, AJAX, YUI.
• Passion for writing optimized code using JS best practices  and design patterns
• Experience with JS or Java-based Unit/Integration Testing using Selenium, Appium, Selendroid
• Hands-on experience in building scalable web applications
• Excellent problem solving and debugging skills
• Good Knowledge of version control - GIT (preferred)
• Experience with the full software development lifecycle, design, develop, debug, document, and deliver (especially in a multiple site organization)
• Strong verbal and written communication skills
• Ability to deliver great results in an agile development
• Good to have: Working knowledge of web standards (i.e., REST) and OOPS
• Good to have: Experience in Data Structures, Algorithms and their optimization

Even if you don’t meet all of these qualifications above, we’d still love to hear from you. Tell us about your unique qualifications in your cover letter.

CaaStle is committed to equality of opportunity in employment. It has been and will continue to be the policy of CaaStle to provide full and equal employment opportunities to all employees and candidates for employment without regard to race, color, religion, national or ethnic origin, veteran status, age, sexual orientation, gender identity, or physical or mental disability. This policy applies to all terms, conditions and privileges of employment, such as those pertaining to training, transfer, promotion, compensation and recreational programs.

Core responsibilities

•      Collaborate with product teams to more accurately define new features

•      Collaborate with UX in the building of a design system/component library

•      Ensure high performance of all systems developed

•      Aware of the relationship between development and business with a strong sense of ownership

•      Employ the latest techniques such as agile software development

•      Good knowledge of highly scalable server-side development

•      Basic working knowledge of Unix/Linux

•      Excellent problem solving and coding skills in Javascript/Angular

•      Strong interpersonal, communication and analytical skills

•      Should have the ability to express their design ideas and thoughts

Job Brief

•      JavaScript and angular expertise

•      Experience with libraries such as bootstrap, Ag-grid, formly, observables, and ngrx

•      You enjoy working with new technologies, and are curious and energetic

•      Experience working with REST APIs

•       Good understanding about authentication and security

•      Create and maintain various unit and integration tests

•      You enjoy working in a creative and agile environment that moves fast

•      Ability and interest in providing mentorship to junior members of the team

•      Write high quality code and Conduct code reviews

•      Being resourceful and detail-oriented, along with being an outside the box thinker!

•      Experience being a great team player, who work collaborative, and brings a positive attitude

Company Profile:

Website : www.wissen.com

Wissen Thought leadership : https://www.wissen.com/articles/

https://www.youtube.com/watch?v=H_rLmHvlOKg

Employee Speak: https://www.ambitionbox.com/overview/wissen-technology-overview

LinkedIn: https://www.linkedin.com/company/wissen-technology

Wissen | Driving Digital Transformation

A technology consultancy that drives digital innovation by connecting strategy and execution, helping global clients to strengthen their core technology.

About the job

The ideal candidate will have strong creative skills and a portfolio of work that demonstrates their passion for product designing with the creativity that would produce an appealing and delightful user experience.

About the role and responsibilities

The UI/UX designer’s role encompasses a couple of the following responsibilities.

To be able to communicate and tell stories with animations

To understand, conceptualise and create storyboards for micro-animations and animations before the final animation

Working alongside UI/UX designers to enhance the experience of digital products

Frequently identify opportunities where motion design would enhance the user experience in digital solutions

Create high quality, creative and innovative animations in 2D and/or 3D

To have a keen interest in learning new tools and expand their horizon of knowledge

About the requirement

The UI/UX designer should have the following abilities

Proven motion design experience and a diverse portfolio to showcase one’s work

Strong storytelling skills and a solid foundation in the fundamentals of visual and motion design

Display the ability to work in different styles

Proficient in softwares like After Effects(presets and plugins), Photoshop, Illustrator, Figma, etc.

A keen eye for design aesthetics and details

Able to articulate ideas, both written and spoken, to drive impact

Good communication skills

Ability to work methodically and meet work in a fast-paced environment

The ability to create illustrations will be a plus

Prior experience with product company or digital products will be a plus

Degree / Certification in Design, Fine Arts or related field is a plus

Type, Location

Full-time, Remote

Desired Experience

2+ years

Roles and Responsibilities :

● A great JavaScript developer who is proficient with React.js (preferred).

● Your primary focus will be on developing user interface components and implementing

them following well-known React.js workflows (such as Flux or Redux).

● You will ensure that these components and the overall application are robust and easy to

maintain.

● You will coordinate with the rest of the team working on different layers of the

infrastructure. Therefore, a commitment to collaborative problem-solving, sophisticated

design, and a quality product is important.

● Generating error-free code and compliance with SOW

● Managing development processes & working notes

● Growing technical skills and being an active part of the technical transformation in the company

● When required manage client communication for projects assigned

● Reporting on project activities and ensuring timely completion of projects/assignments

● Guiding Jr. Developers for the completion of their work

Desired Candidate Profile

Primary Skills :

● Hands-on experience in React.js, HTML/CSS, JavaScript, and People Management.

• Build fast and efficient next-generation web applications
• Implement new features and optimize existing ones
• Collaborate with Designers to iterate on the design
• Work closely with Backend Engineers to integrate APIs and other services
•  Find and address performance issues
• Identify and communicate front-end best practices
• Customer-focused, whether responding to support queries or developing new features and functionality.
• Able to provide constructive feedback and effectively review code, guiding other UI engineers in the right direction

• 3+ years of experience in UI/frontend development.
• Hands-on experience using React as a front-end development framework.
• Sound knowledge of front-end development languages, tools and methodologies like HTML5, CSS3, JavaScript and associated technologies and toolsets (e.g. jQuery, Sass)
• Able to write front-end code that is cross-browser and cross-device friendly, through responsive or adaptive techniques is essential.
• Working knowledge of AWS for product development and deployment is preferred
• Experience using Continuous Integration (CI) / Continuous Delivery (CD) systems for development and deployment.
• Proven knowledge of Test-Driven Development (TDD).

Is software engineering your passion? Are you always hungry for challenges? Do you like to take risks?  Do you always crave to learn more and more? Do you like to help others solve their problems? Do you like to solve complex problems by simple methods?

• Culture to promote learning and growth by relentless focus on innovation.
• A team of aces to work with
• Streamlined engineering processes woven around Agile methodology with the help of tools
• Design led engineering focus
• Opportunity to work on B2B and B2C products in various domains like healthcare & education

• Opportunity to work on cutting edge technologies 

You have:

• Proficiency in Angular 4+, Typescript, JavaScript, JQuery, HTML/CSS
• Thorough understanding of OOJS & commonly used design principles and design patterns
• Working knowledge of State management using NgRxState management & custom npm packages
• Hands on ES6 features to reduce code and keep code clean
• Working knowledge of RxJS
• Working experience in writing automated unit tests using Jasmine, Mocha or any other similar framework.
• Experience of integrating RESTful Web APIs in Web Application.
• Written efficient and production ready code
• Working experience building high performance and scalable applications
• Ability to troubleshoot and debug application for functional and common problems
• At least 6 years of experience in software development 
• Knowledge of databases - NoSQL or RDBMS. 
• Experience working with version control like Git / Bitbucket
• Experience working in Agile Scrum Methodology
• Excellent written and verbal communication skills 

• Experience working on Web APIs
• Working knowledge of modern programming/scripting languages and runtime environments including node.js, Python/Ruby/Java, and experience in mid-tier web services development.
• Experience building proof of concepts, architecting new systems, and improving existing systems to solve business problems and support scaling
• Exposure to various tools that help in maintaining code quality like SonarQube
• Exposure with Atlassian JIRA application lifecycle management tool
• Exposure to Cloud Platforms like Azure or AWS or GCP

Frontend Developer

RESPONSIBILITIES

• Understanding requirements present in specification documents
• Integrate data from various backend-services and databases
• Working with code base across multiple development & staging environments
• Take part in User Acceptance Testing (UAT)
• Be part of Production deployment & release activities

TECH SKILLS

• Must Have:

*       Proven working experience in web programming

*       Know HTML, CSS and JavaScript and the relevant web design coding

*      Must have knowledge on Angular 4+

*      Good to have knowledge on React js

*      Good to have knowledge on view.js

*      Good documentation skills

EXPERIENCE

• 2 to 4 years, preferably in an agile environment