Senior Frontend Developer (React.js)
Weekday AI (YC W21)Role Overview
Weekday AI (YC W21) is hiring a Senior Frontend Developer (React.js). This is a full-time role in Maharashtra. Part of Weekday AI (YC W21)'s Lifecycle hiring, posted last week. Full responsibilities, required qualifications, and the apply link are listed in the description below.
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Job Description
This role is for one of the Weekday's clients
Min Experience: 4 years
Location: Mumbai
JobType: full-time
We are seeking a highly proficient Senior Associate - React.JS Developer to actively participate in the design, development, and upkeep of scalable, high-performance web applications utilizing React.js and contemporary front-end technologies. This position entails building reusable components, integrating APIs, and enhancing application performance. Proficiency in JavaScript (ES6+), HTML, CSS, Tailwind, and adherence to UI/UX best practices is crucial.
This role demands extensive technical knowledge of Next.js and modern web technologies, along with the ability to collaborate efficiently within an Agile team and support the complete delivery lifecycle.
Requirements
Key Responsibilities:
- Participate actively in all stages of the software development lifecycle, including planning, coding, debugging, testing, and deployment
- Assist in converting system architectures and UI/UX designs into functional, efficient, and scalable web applications
- Create robust, reusable, and maintainable frontend components utilizing React.js and Next.js (or Vue.js) along with contemporary JavaScript techniques
- Produce clean, maintainable, and efficient code that adheres to coding standards and best practices
- Integrate RESTful APIs to ensure smooth and efficient data exchange between frontend and backend systems
- Support the planning, debugging, and deployment processes to guarantee timely delivery and optimize performance
- Engage in code reviews and maintain high standards in quality, performance, and security
- Implement responsive design, cross-browser compatibility, and follow mobile-first development principles in all projects
- Contribute to R&D efforts by staying current with emerging technologies and participating in innovation discussions. Provide on-call support during key events and critical system rollouts
- Represent Sportz Interactive in technical meetings, client discussions, and project reviews as required
Background and Experience:
- 4 to 6 years of practical experience developing and maintaining complex web applications using JavaScript, React.js, Next.js, and jQuery
- Deep expertise in the React.js ecosystem, including Hooks, Context API, functional components, and state management solutions (Redux/MobX/Zustand)
- Familiarity with Nuxt.js, Node.js, and Vue.js is a plus
- Strong grasp of application scalability, performance optimization, and maintainability principles
- Experience with cloud technologies (preferably AWS), Redis Cache, and CI/CD pipelines
- Knowledge of Agile methodologies and experience with project management tools such as JIRA
- Understanding of responsive web design, cross-browser compatibility, and UI/UX best practices
- Experience integrating social media APIs (Facebook, Twitter, Instagram) and handling XML/JSON data formats
- Knowledge of mobile optimization and familiarity with frameworks like jQuery Mobile is beneficial
- Excellent communication and teamwork skills coupled with a proactive and solution-focused approach
- Collaborate effectively with backend developers, designers, and QA engineers to ensure smooth product delivery
The "Edge" (What sets you apart):
Proven ability to build a disciplined mid-market sales system, where high-quality pipeline, fast deal velocity, and consistent closures directly contribute to predictable revenue growth.
What We Offer
Global Exposure: Opportunity to work with leading sports properties spanning over 40 sports worldwide.
Innovative Culture: A "fan-first" environment that encourages curiosity, quality, and enjoyment.
Flexibility: Monday to Friday work schedule with flexible hours and a hybrid work model.
Frequently Asked Questions
How do I apply for the Senior Frontend Developer (React.js) position at Weekday AI (YC W21)?
Use the Apply button above to submit your application directly to Weekday AI (YC W21). Most applications take less than 5 minutes if your resume and contact details are ready, and you'll be routed to the employer's official application system to finish.
Where is the Senior Frontend Developer (React.js) position at Weekday AI (YC W21) located?
This position is based in Maharashtra. Weekday AI (YC W21) has not indicated remote or hybrid options for this role, so candidates should plan for on-site work.
What does a Senior Frontend Developer (React.js) at Weekday AI (YC W21) earn?
Weekday AI (YC W21) has not disclosed a salary range in this posting. Many employers share specifics later in the interview process; you can also ask during a recruiter screen if compensation transparency is important to you.
When was the Senior Frontend Developer (React.js) role at Weekday AI (YC W21) posted?
This role was posted on May 27, 2026 (12 days ago). It's still listed as actively hiring; we re-confirm openings against the source system multiple times per day and remove closed roles.
How much experience does the Senior Frontend Developer (React.js) role at Weekday AI (YC W21) require?
This is a senior-level position. Most senior roles call for 5+ years of directly relevant experience. Weekday AI (YC W21) lists their specific requirements in the description below, so review the must-have qualifications closely before applying.
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