React Developer

Mandatory Skills:

JavaScript, Typescript, SEO, Next.js

Required Skills & Qualifications:

• 8–10 years of frontend development experience with strong proficiency in TypeScript and JavaScript.
• Extensive hands-on experience in Lit.js (Web Components) and Next.js (SSR/SSG).
• Proven leadership in architecting frontend solutions and guiding teams through scalable development.
• Deep understanding of Technical SEO, including schema markup, crawlability, and frontend optimizations for search.
• Expertise in Core Web Vitals, Lighthouse, and performance optimization tools.
• Strong knowledge of responsive design, accessibility standards (WCAG), and cross-browser compatibility.
• Experience integrating frontend with Strapi CMS and RESTful or GraphQL APIs.
• Strong familiarity with Git, Agile methodologies, and CI/CD workflows.
• Excellent communication and collaboration skills, with experience working across disciplines.

Key Responsibilities:

• Architect and lead frontend development using Lit.js, Next.js, and TypeScript, ensuring scalable, modular, and maintainable code.
• Own and evolve the frontend technical stack, enabling performance, SEO, accessibility, and developer efficiency.
• Guide the team in building highly-performant web interfaces with a focus on Core Web Vitals, Lighthouse, and DevTools insights.
• Champion Technical SEO implementation, including structured data, metadata optimization, and SSR/SSG strategies.
• Lead code reviews, pair programming sessions, and enforce code quality standards through tools like SonarQube.
• Mentor and manage 3–5 frontend engineers, fostering technical growth and ensuring delivery quality.
• Collaborate cross-functionally with design, product, backend, SEO, and QA teams to ship robust and accessible user experiences.
• Drive and enforce best practices in unit testing, CI/CD pipelines, and agile workflows.
• Troubleshoot complex UI issues and proactively improve front-end architecture and processes.

Responsibilities:

• Design, develop, and maintain user interfaces for the internal product suite.

• Collaborate closely with product managers and backend engineers to understand

requirements, translate them into user-friendly interfaces, and ensure a consistent

user experience across all products.

• Champion the technical feasibility of our UI/UX designs, ensuring seamless user experiences.

• Write clean, maintainable, and well-documented code adhering to best practices and coding standards.

• Conduct unit and integration tests to ensure code quality and functionality.

• Stay up-to-date with the latest UI development trends and technologies.

• Take initiative and ownership of assigned tasks, ensuring they are completed efficiently and to a high standard. 

Requirements/Qualifications

• Bachelors in any Computers stream or related fields

• Minimum 1+ years of experience as a UI Developer.

• Proficiency in Javascript,Node.js & any one of (Angular, Nextjs or React.js)

• Experience with unit and integration testing frameworks.

• Excellent communication and collaboration skills.

• Ability to work independently and as part of a team.

• A passion for modern web development practices and a drive to deliver high-quality

work.

• Good to have the Experience with responsive design and cross-browser compatibility.

Job Description:

• Job involves working on the latest technologies and frameworks in mobile and open source world to develop mobile applications, mobile websites and rich internet applications.
• Candidate should be Collaborative and Quality-focused, resourceful initiative taker, and someone who has good English communication skills.

Desired Candidate Profile:

• Work as part of a team to build React Native iOS / Android applications for clients.
• Architect, build and maintain excellent React Native applications with clean code. Experience with React Js, React Native, JavaScript
• Implement pixel perfect UI's that match designs.
• Implement clean, modern, smooth animations and transitions that provide an excellent user experience.
• Familiarity with RESTful API. • Release applications to IOS and Google Play stores. • Work with native modules when required.
• Complete the sprints according to the estimated time and participate in sprint retrospectives and daily standups.
• Be part of a community of React Native developers who share knowledge and help each other as problems arise.

. 3.5+ years of work experience on React.JS framework

· Has expertise in following front- end optimization techniques:

· Lazy Loading

· Asynchronous Module Definition

· Image Compression and Minification

· Other front-end tooling using Grunt / Webpack and NPM

· Familiarity with NodeJS, Jasmine / Karma and other unit testing frameworks

· Foundation data structure – Arrays, dictionaries, sets and lists

· Proficient in evaluating front end performance and measure accordingly

· Strong appetite to learn industry trends and new & emerging technologies

• Design and implementation of the frontend applications and Mobile apps
• “Pixel-perfect” implementation of our approved user interface
• Ability to understand business requirements and translate them into technical requirements
• Break features into simpler granular tasks, estimate effort required, and identify dependencies
• Work with Analyst and back end developers to deliver a seamless user experience
• Write clean, efficient, maintainable code with good test coverage
• Build reusable code and libraries for future use and optimize the application for maximum speed and scalability
• Test and Debug as required

Expected Qualifications and Key Skills

• BSc or B.E in Computer Science / Engineering from a tier-1 college in India or abroad
• Proficiency in JavaScript, including DOM manipulation and the JavaScript object model
• Strong understanding of UI/UX, responsive design, cross-browser compatibility, AJAX, and general web standards
• Thorough understanding of React.js and its core principles
• Experience with popular React.js workflows (such as Flux or Redux)
• Familiarity with newer specifications of EcmaScript/TypeScript
• Experience with data structure libraries (e.g., Immutable.js)
• Knowledge of isomorphic React is a plus
• Familiarity with RESTful APIs
• Knowledge of modern authorization mechanisms, such as JSON Web Token
• Familiarity with modern front-end build pipelines and tools
• Experience with common front-end development tools such as Babel, Webpack, NPM, etc.
• Proficiency with Git / Version control

Job Description

• Should be proficient with core object oriented JavaScript
• Ability to build full stack application using React/Node/Mongo or any other DB
• React Js
• Redux
• Bootstrap & Responsive design concept with HTML5/CSS3 ideas
• npm/nvm concept and hands on experience on usage
• Git as version control tool
• Clear idea of REST API and ability to read API docs and integrate independently

About Senrya Technologies Pvt.Ltd. –

We are a full-stack avant-garde product organization with its roots in East India (Kolkata) and expanse in North East, Maharashtra, Gurgaon, Karnataka and has made Kolkata from backwaters of IT to a live-wire hub of innovation.  We blend innovation and next-gen technologies with rich experience of more than a decade and undaunted ambition with the primary objective to build highly scalable solutions that will impact a billion lives. 

Senrysa group of companies includes three business verticals that contribute to our success story - Fintech, Retailtech, Healthtech. The growth trajectory of Senrysa has been 100% every passing year.

Fintech - We are one of the leading Fintech organization in financial inclusion with innovative ICT solutions. Senrysa Technologies was an early adopter of the India Stack and has pioneered the Aadhaar Enabled Payment System under the flagship of the business correspondent model for masses and has acquired more than 30 million customers till date under this initiative. We take pride in been granted RuPay Certification from NPCI. Senrysa has diversified client base from Public Sector Bank, Private Bank, Regional Rural Bank to Co-operative Banks across India.

Retailtech - NDHGO is an AI-enabled B2B  online ordering platform that empowers small and medium businesses to go online in less than a minute thereby offering unorganized retail players a level playing field to compete with organized aggregators. It will also enable them to sell and market their product offerings online with zero commission. We aim to develop a sustainable online ecosystem for the stores and make their presence digitally discernible and accelerate customer engagement with a mobile first approach and simplicity of adoption where retailers can list their products from the NDHGO Catalogue Builder and share the link to their store with customers through WhatsApp and trending Social Media.  Please refer attached presentation for a quick overview.

Healthtech

Understanding the dire need for new practices and procedures and to ensure that quality and timely healthcare reaches every corner of India, we are into Healthcare. We are developing the most advanced IoT based telemedicine devices, this would advent smart health practices that would help improve quality, increase access and affordability.

Benefits:
Competitive Package
Esops
Retention Bonus
Joining Bonus
Relocation Bonus
Higly skilled team members with vast knowledge & expertise

• Building of user-facing elements and Integration
• Writing reusable, testable, and efficient code
• Design and implementation of low-latency, high-availability, and real time applications
• Architecting applications and strategizing them to be scalable for traffic.
• Identifying and working on new innovations which can relate to any kind of technology

• 2-3 years of experience with JavaScript, JQuery, Node.js
• Understanding the nature of asynchronous programming and its quirks and workarounds
• Good understanding of front-end technologies, such as HTML5, CSS3, SASS
• Understanding fundamental design principles behind a scalable application
• Understanding differences between multiple delivery platforms, such as mobile vs. desktop, and optimizing output to match the specific platform
• Creating database schemas that represent and support business processes
• Implementing unit tests
• Proficient understanding of code versioning tools, such as Git

Your Responsibilities

• You will be a rockstar front end engineer bringing to life designs and solutions created in collaboration with designers and product managers. You will be responsible for converting the requirements to fast, optimised, usable interfaces, loved by our users.
• You will be the main source of knowledge on everything “front end” related and guide the team to make correct technical decisions to ensure the speed and scale of the solutions deployed.
• Collaborate daily with back-end developers and web designers to improve the usability
• You will be a key person in ensuring that agile processes created by the team are adhered to and you actively contribute to the improvement of these processes. You will be responsible for estimating your tasks and ensuring that promised timelines are met.
• You will be responsible for the performance, security, scalability, reusability and quality of the applications under you. You will collaborate with senior engineering managers/architects to refine & improve your solutions. You will cascade the same culture across the team by supporting and mentoring team members, helping build truly scalable applications
• You will need to collaborate closely with product managers, designers and business stakeholders to achieve predictable results at a rapid pace. 
• You will be able to handle competing priorities and chart the best course of action for yourself and your team members ensuring blockers are removed
• You will help in attracting and evaluating tech talent to help build the engineering brand of the organization.

Desired background & skills

• 3-9 years of experience as an engineer at top tier digital product companies across consumer or SMB. 
• 3+ years of experience in working on front end JS frameworks like React/Angular/Vue
• Excellent knowledge of working with responsive and adaptive designs. Expert in HTML5, JAVAScript, JQuery & CSS. Basic knowledge of SEO.
• Experience of design collaboration tools such as Zeplin, Figma, XD, Invision. 
• Bonus if either you’re a full stack developer with knowledge of the back end or have experience with cross-platform mobile technologies such as React Native or Flutter.
• You have strong problem-solving skills, data structures and algorithms. 
• Passion to work in an exciting, fast-paced environment. conscientious, curious, hard-working individual who craves accountability and loves to solve complex problems.
• You get a kick out of people using and loving your produced outcome.