- Firm grasp of the JavaScript / Typescript language and its nuances,
- including ES6+ syntax
- Knowledge of Object oriented programming
- Ability to write well-documented, clean Javascript code
- Rock solid at working with third-party dependencies and debugging dependency conflicts
- Understanding of REST APIs, the document request model, and offline storage

About Propelius Technologies
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· 7+ years of professional experience in front-end development.
· 7+ years of hands-on experience with React.js and its ecosystem (Redux, Context API, Hooks, etc.).
· Strong understanding of JavaScript (ES6+), HTML5, and CSS3.
· Experience with RESTful APIs, GraphQL, and WebSocket integration.
· Proficiency in modern build tools (Webpack, Vite, Babel, etc.).
· Expertise in state management libraries (Redux, MobX) and React Query.
· Solid understanding of UI/UX principles and responsive design.
· Experience with testing frameworks (Jest, React Testing Library, Cypress, etc.).
· Familiarity with modern CI/CD pipelines and version control tools (Git).
This is a remote position.
About Company
Our client is angle funded, growth stage B2B SaaS startup that enables a seamless and streamlined collaboration between big pharma, bio-techs and their external manufacturing partners.
Job Profile
- Develop all user-facing products in React.JS
- Build reusable components and front-end libraries for future use.
- Translate designs and wireframes into high quality code
- Focus on code maintainability and performance of application.
- Provide technical advice and assists in solving programming problems
Requirements
- Strong proficiency in JavaScript, including DOM manipulation and the JavaScript object model
- Good foundation in design and a knack for designing interactions and elegant interfaces
- Thorough understanding of React.js and its core principles
- Good to have experience with popular React.js workflows (such as Flux or Redux)
- Experience with data structure libraries
- Familiarity with RESTful APIs
- Familiarity with modern front-end build pipelines and tools
- A knack for bench-marking and optimization
- Familiarity with code versioning tools (such as Git)
- Proficient in industry standard best practices such as Design Patterns, Coding Standards, Coding module, Prototypes etc.
- Experience in using debugging tools used for profiling/optimizing performance
- Experience in debugging, tuning and optimizing UI components
Job Description:
Front end developers are required to work in teams alongside back end developers, graphic designers, and user experience designers to ensure all elements of web creation are consistent.
Responsibilities:
-
Experience in developing apps using Reactjs with Redux, React hooks, react-router with Javascript ES6
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Developing new user-facing features using React.js
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Integrate APIs with frontend components using React.js
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Ensuring user experience determines design choices.
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Developing features to enhance the user experience.
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Striking a balance between functional and aesthetic design.
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Ensuring web design is optimized for smartphones.
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Building reusable code for future use.
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Optimizing web pages for maximum speed and scalability.
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Utilizing a variety of markup languages to write web pages.
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Maintaining brand consistency throughout the design.
Front End Developer Requirements:
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Degree in computer science or related field.
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Understanding of key design principles.
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Proficiency in React.js,HTML, CSS, JavaScript, and jQuery.
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Understanding of server-side CSS.
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Experience with graphic design applications such as Adobe Illustrator.
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Experience with responsive and adaptive design.
About CercleX:-
CercleX is a digital technology platform which is a leading https://cerclex.com/blog/waste-management-in-india/">waste management company in India with an extended outlook of circularity through its various ventures into the field of sustainability.
We have received FICCI Impactful Cleantech Startup Award, MeitY Emerging Startup Award, TVS Capital Budding Nxt Gen Entrepreneur Award, and many more for our digital solutions enabling transactions between waste generators, and aggregators, processors, and bringing in complete transparency, traceability to the waste ecosystem.
https://play.google.com/store/apps/details?id=com.scrapmarketCCX">Cercle X ScrapMarket is an app that helps you buy and sell scrap by connecting 100% verified buyers and sellers of scrap across India. CercleX helps brands to accomplish their sustainability targets with https://cerclex.com/extended-producer-responsibility/">Extended Producer responsibility and research solid waste managemet on the environment to ensure the environment is eco-free.
- Write effective, scalable code
- Develop Connectors tool GUI for various source and target systems/platform/products
- Test, debug, build and deploy UI components in the existing product
- Improve functionality of existing SDK/Frameworks
Skills required :
- JavaScript
- ReactJS
- Redux-Saga
- ES6 (or TypeScript) syntax
- Good problem-solving
- Good debugging
Good to have :
- TypeScript experience
- Material UI experience
- JEST knowledge
- Git and Github/Gitlab/Bitbucket experience
Responsibilities
Understand requirements and translate that to product features.
Should be able to lead a team of developers and designers and communicate status to customers.
Should be efficient in developing and implementing best practices and write a smart piece of code.
Coding standards should be followed, and the code should be highly performant.
Should be able to do impact analysis and document the design of the components.
Should be able to develop reusable components using proper design patterns as listed by lead/architect so that it is extensible.
Should be able to integrate frontend with backend REST apis.
Essential Skills
Strong experience in Typescript
At least 1 - 2 years of experience using HTML, CSS, JavaScript & Angular Js, or React Js
Basic experience in at least one server-side technology (Java, PHP, NodeJS, Python, Ruby)
Ability to multi-task, organize, and prioritize.
- BE Computer Science, MCA or equivalent
- Cloud app development experience
- Developed micro services
- Strong NodeJS experience
- Experience with RabbitMQ is a PLUS
- Experience with MQTT is a PLUS
- Fullstack experience and especially with ReactJS desired
- Experience with SQL and NOSQL databases
- Strong communication skills
Responsibilities
- *You will be working on AI/IOT cloud and responsible for architecture and hands on coding.
- *We need someone who can engage in conversations about technical architecture with internal team and external customers.
- *You will be responsible for creating architecture document, writing pseudo code, explaining design and teststrategy,review work by others in the team, give good guidance, and ensuring the delivery of high-quality software.
- *We are looking for Can do it attitude, and ability to deliver with high velocity and high-quality at the same time.
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
What you will do
If you are looking to be part of the early-stage start-up team that is charting the course and solving a key pain point for the CXO, this opportunity is for you. The opportunity will provide you join a company where you can contribute to all aspects of the product definition, product building and solving some key challenges.
- Architect solutions and execution through hands-on development, quality-assurance, and prototyping
- Collaborate with a UX/UI designers and other front-end and middle-tier engineers to design, prototype, and build user interface for complex cloud-based product
- Participate in complete development life cycle activities like design, coding, testing and production release
- Develop and maintain a scalable web and responsive applications
- Exhibit Devops mindset – Work on continuous integration, including provisioning, deployment, testing, and version control of the software
- Mentor new software developers and junior engineers
What you will bring
- Passionate engineer with 5 – 8 years of hands-on experience of developing next-generation user interface with high quality and performance
- Strong desire to learn & evaluate new libraries/frameworks, and share knowledge with others
- Ability to work in a fast-paced and agile development environment
- Sound knowledge of front end standards and practices
- Translating designs and wireframes into high-quality code
- Knowledge of Redux, React.js and its core principles
- Familiarity with RESTful APIs
- Strong proficiency in JavaScript, AJAX, HTML5, CSS3, JSON, including DOM manipulation and the JavaScript object model
- Experience with popular JS frameworks and libraries (React, Angular, JQuery, Ember, Babel, Webpack etc.)
- Experience of building Single-page Web Apps
- Ability to understand business requirements and translate them into technical requirements
- Experience with test automation: TDD, unit/integration/functional testing
- Proficient with debugging and testing tools to troubleshoot and optimize the UI
- Solid understanding of object-oriented design and programming concepts, core JavaScript concepts like scope/closures, the event loop and asynchronous callbacks, promises
Good to have
- Full-stack development experience
- Prior Startup Experience
- Prior experience in developing real-time web applications
- Experience with continuous deployment
- Proficiency with Git/Github
- Experience with GraphQL
Success Factors
- Start-up mindset
- Good problem solving abilities
- ‘Can-do’ attitude
- Prior experience of working with globally distributed teams is an added advantage
- Work with minimal supervision
- Excellent communication skills and being able to work independently or in a full team
Why Join Us
Our team is looking for fast-moving engineers with an entrepreneurial mindset. As a software engineer, you will help grow the platform by identifying new features, products, and business opportunities. You will write and own scalable production-grade code across the platform in collaboration with the small, close-knit and dedicated global development team.
We keep cloud-native concepts close to our heart whenever we design any software component and you will have exciting opportunities to work on new software frameworks, modern tech stack and cloud-native applications using latest cloud technologies.
If you want to feel and see that your contributions matter, have a strong desire to work for an early-stage startup and if you love working in a dynamic, agile, continually improving environment and most importantly, work with good people, come talk to us. If you are excited about the opportunity to build a cool new Cyber Security SaaS product ground-up then lets talk!!
We are an IIT Bombay incubated, healthcare start up developing a mobile based Ai technology to help reduce health risks for women during their pregnancy. Our Founders are Harvard and Columbia University alums with extensive experience in digital health in the US and India.
Mobile Development Engineer - React Native (Location: Mumbai)
Requirements:
2-4 years of experience on React Native. Good understanding of start up environment.
1. Advanced knowledge of React Native.
2. Excellent knowledge of React native libraries, Redux, HTML5, CSS3, JavaScript.
3. Excellent knowledge on android and iOS UI design principles, patterns and best practices.
4. Experience working with publishing on stores.
5. Experience working with Rest APIs.
6. Knowledge of integration and utilization of cloud services and payment systems.
7. Should have played a key role in conceptualising to deployment of apps using React Native.
8 Project management, scheduling, allocation and delivery.
9. Proven experience of agile development, sprint planning and backlog management.
10. Keen focus on customer, excellent communication skills, with high level of responsiveness and responsibility.
Good to Have:
Full Stack experience.
Experience working on chat apps, community, and healthcare domain.
Exposure or Interest in NLP, Machine Learning.







