Frontend Developer

About the Role

We are looking for a highly skilled and experienced Senior React Native Developer to join our team and take the lead on developing our cross-platform mobile application. You’ll play a critical role in building, launching, and scaling a high-performance mobile app that runs seamlessly on both iOS and Android platforms from a single codebase.

If you’re passionate about mobile technologies, have a strong command of React Native, and are excited about creating a high-quality product from the ground up, we’d love to hear from you.

Responsibilities

• Lead the end-to-end development of a cross-platform mobile application using React Native.
• Collaborate with product managers, designers, and backend engineers to deliver high-quality user experiences.
• Build reusable components and front-end libraries for future use.
• Optimize app performance for speed and scalability across devices and OS versions.
• Ensure the app complies with design standards and platform-specific guidelines (Apple App Store & Google Play).
• Set up CI/CD pipelines for automated builds, testing, and deployment (e.g., using Fastlane, EAS, or similar).
• Integrate RESTful APIs and third-party services.
• Handle app store submissions and updates.
• Mentor junior developers and enforce best practices in mobile development.

Requirements

Must-Have:

• 5+ years of experience in mobile application development.
• 3+ years of hands-on experience with React Native.
• Strong understanding of JavaScript (ES6+), TypeScript, and React architecture.
• Deep knowledge of iOS and Android mobile app development lifecycle.
• Experience with mobile UI/UX best practices and performance optimization.
• Familiarity with native build tools (Xcode, Android Studio).
• Experience integrating REST APIs and handling network latency issues.
• Proficient with Git, GitHub/GitLab, and agile development practices.
• Experience with push notifications, in-app purchases, deep linking, and analytics SDKs.

Preferred:

• Experience with Expo or EAS for managed workflows.
• Familiarity with mobile CI/CD pipelines (Fastlane, Bitrise, etc.).
• Experience with native modules (Objective-C/Swift and Java/Kotlin) as needed.
• Knowledge of automated testing frameworks (Jest, Detox).
• Published apps in both the App Store and Google Play.
• Prior experience in startups or high-growth environments.

What We Offer

• Opportunity to lead and build a product from the ground up.
• Work with a dynamic and talented team in a fast-paced environment.
• Flexible working hours and remote-first culture.
• Competitive salary and equity options (if applicable).
• Learning and development budget.

#HiringAlert

We are looking "Java Fullstack Developer" for Reputed Client @ Chennai Permanent Role.

Experience: 2 - 5 Yrs

Responsibilities:

• Strong fundamentals – OOPS concepts, Exception Handling, Coding Standards, Logging

• Proven skills in Java, Spring, Spring MVC, Hibernate, Spring boot, Microservices, REST webservices, Java Script, JQuery, Angular, HTML5, CSS, Bootstrap, Spring Security, Oracle, PL/SQL, Ant, Maven, Log4J

• Strong experience in object-oriented design and development

• Designed and developed web applications using Spring framework - preferably Spring boot

• Experience in developing REST services using Spring framework

• Experience in Hibernate - JPA Annotations

• Experience in Angular, CSS, HTML5 and UI designing

• Developed scheduler jobs using Quartz framework

• Knowledge in unit testing frameworks – preferably JUnit

• Good understanding of RDBMS concepts and experience in SQL

Qualifications:

• Graduation / Post Graduation in Science / Engineering

• 6 to 8 years of strong development experience in Java both in Client side & Server-Side frameworks.

• Knowledge in Agile methodologies

• Experience in Oracle/SQL database

• Apache Tomcat. Monitoring and tuning application servers

• Exposure to ETL tools

• Knowledge in continuous integration systems

• Git version control system

• Must have worked on a large-scale product development effort and has experience working with geographically dispersed teams.

• Collaborate with SME, product managers and other members of the project team in requirements specification and detailed engineering analysis.

• Lead technical design, development and delivery of the product

• Should be willing to contribute 100% of time coding

• Review code and maintain the code quality

● Design and develop responsive and visually appealing web applications and user interfaces using HTML, CSS, and JavaScript, React frameworks.

● Collaborate with UX designers, product managers, and software engineers to understand project requirements and translate them into interactive, user-friendly interfaces.

● Ensure the technical feasibility of UI/UX designs and optimise applications for maximum speed and scalability.

● Conduct code reviews and provide constructive feedback to team members, fostering a culture of continuous improvement.

● Stay updated with the latest industry trends, best practices, and emerging technologies in UI development, and recommend their integration to enhance our products.

● Identify and address performance and compatibility issues across different browsers and platforms.

● Champion UI development best practices, standards, and guidelines within the development team.

● Collaborate with backend developers to integrate front-end interfaces with server-side logic and APIs.

● Troubleshoot and debug UI-related issues and provide timely resolutions.

● Mentor junior developers, assisting them in enhancing their skills and knowledge in UI development.

● Write and encourage other engineers to write automated tests.

Skills/ Experience

● Bachelor's degree in Computer Science, Software Engineering, or related field (or equivalent practical experience).

● Proven experience as a UI Developer or Front-End Developer, with at least 3+ years of hands-on experience in building user interfaces for web applications.

● Proficiency in front-end technologies such as TypeScript, Tailwind, React, Redux.

● Strong understanding of responsive design principles.

● Solid knowledge of web performance optimization techniques and best practices.

● Familiarity with Figma and other UI/UX design tools, to collaborate effectively with designers.

● Demonstrated experience in writing UI components to corresponding backend APIs and Databases.

● Excellent problem-solving skills and ability to troubleshoot complex UI-related issues.

● Strong communication and collaboration skills, with the ability to work effectively in a team-oriented environment.

Senior React JS Developer

Responsibilities:

Translate Business requirements into Technical Requirements and conceptualize solution by breaking it up into logical units of work.

Plan and execute product roadmap with product manager and other stakeholders.

Develop and implement integration solution with high quality, exception handling and low maintenance in accordance with the project timeline, adherence to global standards/principles, design standards

Provide support and documentation to assist in sustaining the project during the transition to production by working closely with production support team during production release and troubleshooting production issues

Responsible for effectively communicating the plan, status and updates to stakeholders and scrum team

Proactively raise issues to Product Owner and Scrum leads when necessary

Independently assess and represent development team - covering all aspects of technical feasibility, complexity and timelines during project / program review meetings.

Lead , manage , mentor team of developers.

Design and build new features, simplify existing services, and scale our systems as we rapidly grow and evolve

Create reusable patterns that improve the consistency of the codebase

Collaborate with your engineering teammates through planning, pairing, testing, reviewing and delivery of the features that you build

Work with the product team to translate powerful ideas into everyday business value

Write sustainable, testable, high-quality, high-performance code

What Makes You a Great Fit

6+ years of relevant front-end development experience writing modular / reusable / Object Oriented / functional Javascript code.

At least 5 years of working experience on React JS framework

Firm grasp of JavaScript (or Typescript) and its nuances, including ES6+ syntax

Strong expertise with HTML5, CSS3  (with media queries) and writing cross-browser compatible code

Grid system understanding

CSS preprocessor experience (SASS or LESS), Responsive design, Accessibility

Familiarity with code versioning tool like GitHub.

Experience with RESTful services

A strong, demonstrable portfolio of past web applications including websites.

Self-motivated, fast learner with attention to detail and quality

Excellent diagnostic, troubleshooting, and communication skills

Required Skills:

6+ Years of experience

Should be able to work independently and must be hands on in development.

Should be able to take a problem and produce an architectural pattern plus a proof of concept utilising best practices when it comes to developing enterprise integration software.

Should have excellent analytical and problem solving skills.

Strong proficiency with Spring Boot, Microservices, Spring MVC, Coding and Spring Integration.

Knowledge of enterprise integration patterns and asynchronous messaging patterns is required.

Experience with working with process modelling software is a nice to have.

Experience in working with rule based systems is a nice to have.

Strong fundamentals in object oriented programming is a must have.

Experience in working with at least one relational and one no sql database is preferred.

Strong experience in working and designing message structures using xml and json.

Strong knowledge of SDLC Lifecycle Process and Agile Methodology.

Experience in BPMN would be added advantage.

Experience in working with security protocol (e.g. TLS, OAuth) and understands security in development.

Experience with containerization using Docker, orchestration using Kubernetes, Continuous Integration/Delivery tools - Jenkins, Maven, GIT.

Experience in Messaging with MQ based Messaging Systems.

Communication:

Should be able to communicate effectively with product team members, clients and stakeholders.

Clarifies and communicates product objectives and problem solving.

About Numen (https://numenhealth.com):
Numen Health is a Health-tech company with a goal to reimagine healthcare in India. Through an amalgamation of our healthcare team with the power of AI and the Internet of Things (IoT), we make healthcare easier and accessible through a data-based preemptive approach. Our mission is to facilitate change in the healthcare industry by moving from a reactive approach to a proactive one.
We are a wonderful, young team with experience in scaling up Indian and international businesses from the ground up. We are looking for like-minded and enthusiastic people who are passionate about making a lasting difference and want to help us revolutionize the way healthcare is delivered to a billion Indian!

Our Vision:
To shift the healthcare ecosystem from a ‘Sick-care' approach to a ‘Holistic-healthcare' approach. We aim to do that by enabling doctors and caregivers to move from treating ailments to employing a data-based,
preemptive approach.
About Product:
We offer preventive healthcare programs to individuals to improve their health. These plans are crafted in consultation with their treating doctor and a dedicated care team remotely monitors the progress in real[1]time. For doctors, Numen is a virtual facility to cater to all of their patient’s needs, remotely.
Why Join?
At Numen, you have the opportunity to make tangible changes to the existing healthcare systems in India
making it preventive and affordable. By joining the Numen team, you get to be part of a young, dynamic
team that is passionate about making a change and a fast-paced environment with multiple opportunities to
learn and grow.

Job Overview : 
Software Development Engineers FE will be responsible to participate in all stages of the software product development life cycle. This will include analysing system and user requirements, designing software flowcharts, creating user interfacing applications (Web Or Mobile) , troubleshooting bugs, and running tests to improve system functionality. An ideal
candidate would be someone who has proficiency in React Js, good analytical skills, the ability to anticipate issues and frame remedial actions, and excellent teamwork skills.

Responsibilities:
● Write simple, efficient, and maintainable code.
● Develop, scale and maintain web Applications written in ReactJs.
● Validating the functionality and security of the application.
● Manage individual priorities, deadlines, and deliverables.
● Function well in a fast-paced, rapidly changing environment.
● Ensuring best coding standards and practices to improve and maintain quality.
● Meeting with the engineering and product team to discuss project definitions and goals.

Requrements:
● Bachelor/Master degree in CS or related field from a reputed college.
● 2-6 years of experience in frontend software development.
● Sound knowledge of HTML,CSS, JavaScript and ReactJs.
● Solid grip on the programming basics like DS and algorithms.
● Prior experience in start-ups or health-tech will be a plus.
● Highly effective communication and interpersonal skills
● Strong troubleshooting and debugging skills

We are looking for a great JavaScript developer with experience in the range of 2 to 6 years, who is proficient in frontend techlogies with React.js. 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 quality product is important.

We are hiring 2 ReactJS Developers. Candidates having experience of working on charts/graphs like d3.js, chart.js will have an added advantage.

Selection Criteria
If your profile has selected then you have to attend a 5 hours assignment to move your candidature to the final round of interview.

Responsibilities

• Developing new user-facing features using React.js

• 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 vast array of web-capable devices and browsers
•  

Technical Skills

• Strong proficiency in JavaScript, including DOM manipulation and the JavaScript object model

• 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

• 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.

• Ability to understand business requirements and translate them into technical requirements

• A knack for benchmarking and optimization

• Familiarity with code versioning tools such as Git.

JOB DESCRIPTION -

● Writing tested, idiomatic, and documented TypeScript, JQuery, HTML5,

CSS

● Proven experience working with Angular 2+ versions and good to have

experience on angular material

● Strong understanding of front-end WEB technologies

● Familiarity with design concepts and constraints on web

● Able to write Unit-test code for robustness

● Proficient in Problem Solving

● Hands on experience in Responsive Web Development

● Hands on experience in developing dynamic web applications based on

REST APIs

● Good to have hands on experience on Agile methodology

QUALIFICATIONS: 

• Minimum 3-5 years of Experience in Java Backend development. 
• Degree in Engineering or Computer Science. 
• Good knowledge/experience in Data structure, Algorithms. 
• Proficiency with Programming Language: Java 1.8 and above (1.8 V must), J2EE. 
• Proficiency with Framework: Spring Stack (Security, Web MVC, REST), Hibernate, JMS. 

• Strong knowledge in any one Relational Databases (Mysql / Oracle / SQL Server). 
• Strong experience in Web services (SOAP and RESTFUL). 
• Tools & Utilities: STS / Eclipse / IntelliJ / NetBeans.Web/Application Server: Jboss. 
• Should have expertise in Design Patterns, Transactions, Multithreading concepts 
• Proficiency in Build Cycle management (Maven, Jenkins, Scripting). 

• Familiarity with Deployment technologies like Docker, Rancher and Virtual machines. 
• Familiarity with Agile Development processes. 
• Exposure to Spring Integration batch knowledge, OAuth2 authentication 
• Excellent verbal communication skills. 
• Good problem-solving skills with attention to detail. 

• Able to create functional, attractive applications that perfectly meet the needs of the user. 

• Collaborate with product, design, and other engineering teams to brainstorm and resolve complex problems.
• Ensure the quality of code is up to the highest standard of readability, conciseness, efficiency, modularity, and extensibility.
• Experience with the entire Software Development Life Cycle (SDLC)
• Solid communication skills: Demonstrated ability to explain complex technical issues to both technical and non-technical audiences
• Talking to customers and business teams to suggest improvement areas in product flows.
• Create peer learnings for team members and build context for new teammates
• Help with building the company's tech team and iterating on the hiring framework.
• Provide regular feedback to your team (peers and managers) to ensure continuous improvement.
• Keeping abreast with the latest technologies and working on your skills regularly.

Must-haves

• At least 3 years of experience working in frontend for desktop and mobile web.
• Familiar with design tools and convert them to actual code (HTML+CSS+JavaScript)
• Mastery in DOM Manipulation (including Jquery) and understand components, CTAs.
• Well-versed in other non-vanilla languages (ex. TypeScript)
• Well-versed in standard frontend framework (ex. ReactJS)
• Understanding of GraphQL APIs.
• Deep understanding of web technologies in various mobile systems
• Have empathy for the users you build for

Good to have

• Experience in the fintech industry
• Experience leading design and implementation of robust and secure web services.