Senior UI Software Engineer

Front-End Developer (React.js) – Mumbai | Immediate Joiners

Location: Mumbai

Experience: 2+ Years

Job Type: Full-Time

Notice Period: Immediate Joiners Only

About the Role

We are hiring a Front-End Developer to join our product engineering team. The ideal candidate has experience working in product-based companies and has contributed to at least one end-to-end e-commerce platform project.

Key Responsibilities

• Develop and maintain responsive UIs using React.js
• Convert UI/UX designs into reusable front-end components
• Optimize components for performance and cross-browser compatibility
• Integrate front-end with backend RESTful APIs
• Collaborate with product, design, QA, and backend teams
• Participate in code reviews, agile ceremonies, and testing

Required Skills

• Strong in JavaScript (ES6+), React.js, HTML5, CSS3
• Experience with Redux/Zustand for state management
• Knowledge of REST APIs, responsive design, and Git
• Familiarity with debugging and front-end performance optimization

As a Frontend Developer, your responsibilities will include:

• Developing new user-facing features using React.js and integrating with backend services.
• Building reusable components and front-end libraries for future use.
• Translating designs and wireframes into high-quality code.
• Optimizing components for maximum performance across a broad spectrum of web-capable devices and browsers.

Key Performance Indicators:

• Efficiency and quality of the code developed.
• Adherence to project timelines and delivery milestones.
• Positive stakeholder feedback on usability and design.
• Continuous improvement and adoption of best practices in frontend development.

Prior Experience Required:

• Minimum 3+ years of experience in frontend web development.
• Proficient in JavaScript, including DOM manipulation and the JavaScript object model.
• Extensive experience with React.js and its core principles.
• Strong proficiency in HTML5, CSS3, and modern frontend development tools.
• Experience with popular React.js workflows (such as Redux).
• Familiarity with newer specifications of EcmaScript.
• Experience with data structure libraries (e.g., Immutable.js).
• Good understanding of RESTful APIs and modern authorization mechanisms (e.g., JSON Web Token).
• Good to have: Experience with TypeScript and Next.js.

Location:

Hyderabad

Collaboration:

The role involves working closely with backend developers, UI/UX designers, and project managers to deliver seamless, high-quality web applications.

Salary:

Competitive, based on experience and market standards.

Education:

• Bachelor's degree in Computer Science, Information Technology, or a related field.

Language Skills:

• Strong command of Business English, both verbal and written, is required.

Other Skills:

• Excellent problem-solving skills.
• Looking for perfection in development
• Taking Ownership and Accountability in a fast-paced environment.
• Proficiency in code versioning tools, such as Git.
• Knowledge of modern frontend build pipelines and tools.
• Experience with responsive and adaptive design.

Additional Requirements:

• Portfolio of previous projects that demonstrates expertise in frontend development.
• Familiarity with agile methodologies.
• Strong teamwork skills, with the ability to collaborate effectively with colleagues and clients across diverse teams.

Employer:

About RaptorX

RaptorX is a fintech startup focused on redefining fraud detection and prevention in real time for banks, financial institutions, and digital platforms. Backed by top-tier investors, including senior technology leaders from Google, Microsoft, and Peak XV Partners, RaptorX leverages advanced AI models for anomaly detection, and high-throughput architecture to stay ahead of sophisticated fraud patterns.

Senior Software Engineer-Frontend

About the role: 

We are looking for passionate, talented, and highly motivated hands-on Front End Developers with a creative edge, strong problem solving skills and strong development fundamentals. We strive to maintain an open culture where everyone is a contributor and feels comfortable sharing ideas and opinions. Our team, drawn from the best product companies, is obsessive in its detailing and our focus is on awesome User Interaction.

Requirements:

• Ability to collaborates with teams to explore existing systems, determines areas of complexity and learns the applications capabilities
• Complete understanding of internal code and workings on any popular open source library will be highly appreciated
• Some record of contribution to any popular front end open source project is a big plus.

Skills that will help you succeed in this role:

• An ideal Senior Front End Engineer would have 3-6 years of experience in building highly scalable UI on the Web/Mobile.
• Highly skilled at building highly performant web applications using  JavaScript, HTML and CSS including frameworks and tools such as React, Redux, Redux saga, Sass, Less etc.
• Ability to write testable, maintainable code that’s easy to understand.
• Experience in modern front-end build pipelines and tools.
• Ability to take complex problems and break them down into smaller tasks.
• An innate curiosity about how things work.
• Strong product and design sensibilities and an obsessive attention to detail.
• Excellent communication skills.
• Self-directed team player who thrives in a continually changing environment.
• We are looking for passionate, talented, and highly motivated hands-on Front End Developers with a creative edge, strong problem solving skills and strong development fundamentals. 

Job Description: Web Developer 

About the company

Design Qandy is a luxury home décor brand. It’s nothing less than a revolution in home décor industry- where technology enables world class home interior design.

What would you be required to do?

• Develop new user-facing features
• Build reusable code and libraries for future use
• Ensure the technical feasibility of UI/UX designs
• Optimize application for maximum speed and scalability
• Assure that all user input is validated before submitting to back-end
• Collaborate with other team members and stakeholders
• Ensure the code is SEO friendly
• Website and software application designing, building, or maintaining.
• All code should work cross platform and Responsive.
• Full-stack developers and can do both front-end and back-end development.
• Using scripting or authoring languages, management tools, content creation tools, applications, and digital media.
• Conferring with teams to resolve conflicts, prioritize needs, develop content criteria, or choose solutions.
• Directing or performing Website updates.
• Developing or validating test routines and schedules to ensure that test cases mimic external interfaces and address all browser and device types.
• Editing, writing, or designing Website content, and directing team members who produce content.
• Maintaining an understanding of the latest Web applications and programming practices through education, study, and participation in conferences, workshops, and groups.
• Back up files from Web sites to local directories for recovery.
• Identifying problems uncovered by customer feedback and testing and correcting or referring problems to appropriate personnel for correction.
• Evaluating code to ensure it meets industry standards, is valid, is properly structured, and is compatible with browsers, devices, or operating systems.
• Determining user needs by analysing technical requirements.

What skills we are looking for?

• Good communication skill to communicate with stakeholders, project managers, quality assurance teams, Regularly and other developers regarding progress on the long-term technology roadmap
• Curious and progressive mind to Create and maintain workflows with teams to provide visibility and to ensure workload balance for consistent visual designs
• Good technical knowledge to Produce quality code, raising the bar for the whole team on quality and speed
• Through analytical skills to Recommend system solutions by comparing advantages and disadvantages of custom development and purchase alternatives

Who qualifies?

• Proficient understanding of web markup, Top-notch programming skills and in-depth knowledge of modern HTML5/CSS/JavaScript/XML/Json/APIs
• Basic understanding of server-side CSS pre-processing platforms, such as LESS and SASS
• Proficient understanding of client-side scripting and JavaScript frameworks, including jQuery
• Proficient understanding of Angular and React to develop applications.
• A solid understanding of how web applications work including security, session management, and best development practices.
• Adequate knowledge of relational database systems, Object Oriented Programming and web application development.
• Hands-on experience with network diagnostics, network analytics tools. For light weight and fast serve web pages.
• Aggressive problem diagnosis and creative problem-solving skills
• Strong organizational skills to juggle multiple tasks within the constraints of timelines and budgets with business acumen
• Ability to work and thrive in a fast-paced environment, learn rapidly and master diverse web technologies and techniques.
• Basic knowledge of Search Engine Optimization process.
• Solid knowledge and experience in programming applications.
• Excellent in Front-end web apps and code debugging
• Good Knowledge of node.js, express.js, Agular & React.
• Experience of WordPress websites development.
• Basic Knowledge of Ember.js & Backbone.js
• Proficient understanding mongodb& other no sql databases
• Good understanding of asynchronous request handling, partial page updates, and AJAX
• Basic knowledge of image authoring tools, to be able to crop, resize, or perform small adjustments on an image. Familiarity with tools such as Gimp, Photoshop, Illustrator and CorelDRAW is a plus.
• Proficient understanding of cross-browser compatibility issues and ways to work around them.
• Understanding of code versioning technologies (Git, Mercurial, SVN) is required
• Good understanding of SEO principles and ensuring that application will adhere to them.
• A strong attention to detail and a creative mindset.
• Computer science degree or equivalent experience
• Experience leading a team
• 2+ Years’ experience in back-end development.

Regards
Team Merito

SaaS-Nest is a product-based company headquartered in Jaipur, Rajasthan. We have started our journey in February 2022 with a vision to transform HealthCare by technology. We are closely associated with Synergy Health 360, a US based healthcare organization. We have a team of experienced medical professionals to provide insights and innovation ideas which in turn is implemented by a perfect blend of young and qualified IT professionals.  

About Team & Product/Project Details 

We are building a health and wellness technology platform to cater the needs of US Healthcare market. Our product is aimed to provide anywhere/anytime access to Primary Care Physician and telehealth platform to patients and simultaneously provide better management options to providers for in-person and telemedicine appointments. The product will be EMR agnostic, scalable and provide licensed access to an integrated network of specialty services and predictive modeling technology. 

 
SaaS-Nest Technologies Pvt. Ltd. is seeking an entry level Frontend Software Engineer to work as a key team member developing web-based solutions. The ideal candidate will possess a solid knowledge of frontend development.  

What you will be doing 

 
The Software Engineer will be working as part of an agile team with other passionate, driven, and talented people, creating healthcare solutions. Your primary responsibilities will include developing interactive web-based, mobile, and/or desktop applications using SaaS-Nest as well as industry best practices to deliver high value and quality to users. 

What you bring (Experience Level & Mandatory Skills in potential candidate) 

• Candidate should have strong fundamentals in modern frontend frameworks (Angular, React or others).
• Hands on experience in JavaScript, TypeScript, modern frontend frameworks.
• Good communication & presentation skills.

 
Desired Skills, Qualifications and Technical Requirements 

• Graduate in Computer Science and/or Engineering.
• Hands-on knowledge of HTML5, CSS3, JavaScript, TypeScript, NPM
• Knowledge/Experience of modern web frameworks.
• Good knowledge of Object-Oriented JavaScript (OOJS), JavaScript - and practical uses in building complex interactive experiences, primarily with ECMAScript 2015
• Good understanding of creational and structural design patterns in JavaScript
• Knowledge/Experience working with Single Page Applications (SPA) with universal rendering capabilities.
• Good understanding of the Web Components standard.
• Understanding of SEO and accessibility and making it part of the development workflow.

Bonus if you have 

• Healthcare Industry experience
• Familiarity of working with TDD in JS with the help of frameworks like Jasmine, Mocha, Karma etc is a plus

Human Resources 

SaaS-Nest Technologies Pvt. Ltd. 

Kvantum is a career-changing opportunity where you will get to learn the latest and greatest marketing analytics for CPG, Retail, eCommerce, Pharma industry (to name few). At Kvantum, you will be part of a rapidly growing company. You will be able to make your mark; you’ll help write the story.  You will get the chance to go above and beyond, being a hero to your clients and to your team. You will get the chance to make a big impact, applying your coding skills, domain expertise to ready the most innovative marketing science product to Fortune 1000 customers.

What you’ll be doing in your new job:

 As a  Front End/UI Developer at Kvantum you will be working with incredibly talented, optimistic people in an environment that fosters innovation builds trust, and frequently erupts into laughter. You are a natural developer and enjoy helping team members in coding and development. You command respect from your superiors and also from peers. In this role, you’ll demonstrate a proven track record of developing enterprise-grade web frontends using technologies such as JavaScript, Ajax, XHTML and JSON. You'll join a team of exponential application developers who are working hard to develop our next generation SaaS marketing applications.

 Primary Responsibilities includes:

• Develop Proof-of-Concept and prototype applications using new technologies and frameworks. In addition to collaborating with internal teams and clients to create innovative solutions.
• Help establish GUI best practices and JavaScript frameworks for web development.
• Provide context and guidance for integration and implementation of Front-End Interfaces
• Translate wireframes, comps, and functional requirements into functional HTML/ CSS / Javascript.
• Develop standards-compliant mark-up and code for web sites and applications
• Develop JavaScript using standard Frameworks (jQuery, etc.)
• Develop small to medium size custom JavaScript libraries for reuse across the application
• Provide technology and implementation expertise to the domain, projects, or client
• Maintain leading-edge knowledge in emerging technologies and frameworks
• Participate in knowledge sharing and lessons learned sessions from project experiences

For this position, you must have:

• Expert JavaScript/HTML/CSS coding skills.
• 2-4 years of professional experience 
• Minimum 2 years of relevant experience in javascript 
• Minimum 1 year of relevant experience in React.js
• Hands-on experience with the implementation of different design patterns
• Proven experience of developing software using the Agile/SCRUM development methodology
• Command of web standards, CSS based design, cross-browser compatibility
• Experience to optimize the performance of the web application;
• Good understanding of page rendering, DOM manipulation, caching, REST API
• Experience of developing the application using  Test-driven Development(TDD)
• Experience of working on LINUX environment
• Attention to detail, Dedication, and Problem-Solving skills.

Nice to Have: 

• Working experience in any of  these technologies and frameworks: D3.js, Node.js, Express.js, Elasticsearch, GraphQL, Redis
• Experience working with start-ups.
• A good learning curve for new technologies.

We provide a competitive stipend and abundant opportunity for talented people to grow faster. Our people (as we call them Kvants) know how to celebrate success (monthly team events, quarterly company events, employee awards, etc.) and work smart to achieve desired goals.

Disclaimer:

Outside Recruiters: Kvantum prefers to recruit candidates directly. We do not accept unsolicited agency resumes. Please do not contact Kvantum employees with unsolicited resumes. Any resume sent by an outside agency without an explicit signed Kvantum generated agency agreement in place will be considered unsolicited and will not be eligible for payment.