React - Software Engineer

Job Title: React.js Developer

We are seeking a talented React.js Developer to build and maintain high-quality web applications. The ideal candidate should have strong experience in JavaScript/TypeScript, React.js, HTML, CSS, and state management (Redux/Context API). You will work closely with our team to develop responsive UIs, integrate APIs, and ensure performance optimization.

Requirements:

• 2+ years of experience in React.js development
• Strong knowledge of JavaScript (ES6+), React hooks, and component-based architecture
• Familiarity with RESTful APIs, Git, and modern front-end tools
• Bonus: Experience with Next.js, Tailwind, or testing frameworks

About the Role

At Ceryneian, we’re building a next-generation, research-driven algorithmic trading platform aimed at democratizing access to hedge fund-grade financial analytics. Headquartered in California, Ceryneian is a fintech innovation company dedicated to empowering traders with sophisticated yet accessible tools for quantitative research, strategy development, and execution.

Our flagship platform is currently under development. As our Frontend / Full Stack Engineer, you’ll lead the creation of a stunning, intuitive user experience—spanning our landing page, drag-and-drop strategy builder, trading dashboards, and internal tools. You’ll collaborate closely with design, backend, and DevOps teams to build high-performance, secure, and scalable customer-facing applications. This role is central to delivering the reliability, flexibility, and performance our users will rely on in fast-moving financial markets.

We are a remote-first team and are open to hiring exceptional candidates globally.

Core Tasks

·      Design, build, and deploy customer-facing interfaces, including the strategy builder, dashboards, and marketplace.

·      Implement reusable UI components based on Figma designs; integrate charting tools like TradingView or Highcharts.

·      Own the frontend development pipeline, including prototyping, implementation, testing, and responsiveness.

·      Implement secure authentication and user management (OAuth2, JWT, multi-role access).

·      Build real-time web experiences using WebSockets, REST, and client-server integrations.

·      Collaborate with backend and DevOps teams to streamline data flow and deployment workflows.

Top Technical Competencies

·      Strong foundation in HTML/CSS, JavaScript/TypeScript.

·      Proficiency in modern frontend frameworks such as React (Next.js), Svelte, Angular, Vue, or Phoenix.

·      Experience with OAuth2 and secure authentication workflows.

·      Familiarity with server-side rendering (SSR) and modern state management (Zustand, Redux, MobX).

·      Integration experience with charting libraries such as TradingView, Recharts, or Highcharts.

·      Deployment experience using platforms like Vercel, Heroku, GCP, or AWS.

·      Working knowledge of WebSockets, REST APIs, and data streaming models.

·      0–3 years of frontend development experience.

Bonus Competencies

·      Familiarity with Supabase, PostgreSQL, Firebase, or MongoDB.

·      Understanding of microfrontend architectures or API Gateway patterns.

·      Experience with WebAssembly and real-time trading interfaces.

·      Exposure to fintech platforms or trading systems.

·      Background from Tier-I or Tier-II institutions with strong computer science fundamentals, a passion for scalable system design, and a drive to build cutting-edge fintech infrastructure.

Ideal Candidate

You’re a design-minded full stack engineer who builds fast, clean, and modular frontend systems. You thrive on making complex interfaces intuitive—turning strategy logic into drag-and-drop workflows—and can ship high-performance components that integrate seamlessly with real-time APIs. You value design systems, scalable frontends, and cross-functional collaboration.

What We Offer

·      Opportunity to shape the product interface of a next-gen fintech startup.

·      A collaborative, technically driven culture.

·      Competitive compensation with performance-based bonuses.

·      Flexible working hours and a remote-friendly environment.

·      Exposure to financial modeling, trading infrastructure, and real-time systems.

·      Collaboration with a world-class team from Pomona, UCLA, Harvey Mudd, and Claremont McKenna.

Responsibilities:

• Develop high-quality, reusable, and efficient frontend components using React.js.
• Collaborate closely with UI/UX designers and backend developers to translate design concepts into functional interfaces.
• Participate in architectural discussions and contribute to the overall frontend design and development strategy.
• Optimize applications for maximum speed and scalability, ensuring exceptional performance across various devices and browsers.
• Identify and address performance bottlenecks, troubleshooting and debugging frontend-related issues as they arise.
• Stay current with industry trends, best practices, and emerging technologies, and recommend their incorporation into projects when applicable.
• Mentor and provide guidance to junior developers, fostering a culture of continuous learning and skill development.
• Collaborate with the QA team to ensure the delivery of high-quality software through rigorous testing and code reviews.
• Contribute to the documentation of frontend architecture, coding standards, and best practices.

Qualifications:

• Bachelor's degree in Computer Science, Engineering, or a related field (or equivalent practical experience).
• Minimum of 3 years of professional experience as a React Developer.
• Strong proficiency in React.js and its core principles, with a solid understanding of state management (e.g., Redux) and component lifecycle.
• Proficiency in JavaScript, HTML5, and CSS3, Bootstrap, JQuery with an eye for design and user experience.
• Knowledge of version control systems, particularly Git.
• Ability to write clean, maintainable, and well-documented code.
• Strong problem-solving skills and the ability to work effectively in a collaborative team environment.
• Excellent communication and interpersonal skills.

Type, Location

Mumbai, Maharashtra, India

Desired Experience

4+ years

Roles and Responsibilities :

Skills required :

• Strong knowledge of javascript programming, ReactJS, HTML5, CSS3, SASS, ES6 Strong knowledge of modern responsive design techniques
• Strong knowledge of stateless microservices (node/java/etc..), HTTPS/REST, JSON, Webpack/Grunt/Gulp
• Very good understanding and implementation experience of web application UI using OpenID Connect login/authentication
• Version Control – Git, CI/CD of UI projects(e.g. CircleCI, Travis CI, Jenkins), configuration and deployment of static UI assets

Must have skills :

• Must have at least 4 years of industry experience in white labeled Front End web application design & development
• Experience in Test Driven Development, Front End testing and performance optimization (e.g. Jest, unit testing, end-to-end testing)

 Strong Angular experience.

•            Proficiency with Javascript/Typescript and HTML5, Bootstrap, CSS5/SCSS

•            Knowledge on Jquery

•            Experience on building the rich user interface.

•            Translate UI/UX design wireframes to code

•            Develop user interfaces for modern rich internet applications with the latest front end technologies

•            (Good to have) Experience on creating the animation effects with the latest front end technologies.

• Build, extend, and maintain reusable UI components that will be used across many applications.
• Develop best practices and guidelines for contributing UI and reusable components to a central component library.
• Perform installation of code releases and patches and write scripts or programs for IT applications.
• Work closely with our UX design team to ensure usable designs with a consistent look and feel.
• Maintain high-quality code and ensure best practices for UI development.
• Ensure designs follow Web Content Accessibility Guidelines (WCAG)
• Work in a fast-paced agile environment partnering with software engineering teams.

• Translate designs and style guides provided by the UI/UX team into functional user interfaces, ensuring cross browser compatibility and performance
• Build efficient and reusable front-end system that drive complex web applications
• Identify, address performance bottleneck and communicate best practices for front end engineering
• Responsible for meeting expectations and deliverables on time and in high quality
• Collaborate with Product Designers, Product Managers, and Software Engineers to build/deliver next generation products
• Interact with other team members to incorporate their innovations and vice versa
• Rapid prototyping web user interfaces

• Strong development experience of 2 years using front end technologies such as HTML,  JavaScript, CSS, JQuery, HTML5, React JS, Angular 4 or higher , Type Script
• Skilled at Object Oriented JavaScript and having a working knowledge of at least one of  the following MVC Frameworks (Angular, Ember, React etc.)
• In-depth understanding of the entire web development process (design, development, and deployment) 
• Understanding of common frontend design patterns for developing high performance, user friendly and robust applications