React.js Developer

Role Summary: Front-end Developer who would contribute towards building a highly flexible and scalable front-end by bringing deep core technology expertise.

Job Description:

- Ensure proper offline access using service workers and PWA

- Develop components which are SEO friendly

- Have experience in server-side rendering

- Drive evolution of application performance

- Ensure project scalability by having good project architecture

Skill Requirements:

- Good experience in HTML5, CSS3, JS 

- React

- React native

- Angular

- Redux exposure

- Have handled service workers and PWA caching and updates

- CSS pre-processors knowledge like sass

- Knowledge of webpack, parcel, grunt etc.

 -Knowledge of pre-processors like SASS/LESS, CSS-Modules.

- Architecting and automating the build process for production, using task runners or scripts (Gulp / Grunt)

-Have an eye for good UI/UX, Progressive Web Apps, Responsive Design

-Interested in writing code, actively experimenting along with learning new things.

Individual applying to the role should ideally have the following attributes

- 2+ years of experience

-Passionate about Frontend Development and continually follow the platform & innovations

-Strong and innovative approach to problem solving and finding solutions

-Interested in working on fast-paced

- Excellent communicator (written and verbal, formal and informal)

- Flexible and proactive/self-motivated working style with strong personal ownership of problem resolution

- Ability to multi-task under pressure and work independently with minimal supervision.

- Ability to prioritize when under pressure.

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.

Roles and Responsibilities

• Working with designers, product managers to collaboratively own the front-end layer at FalconBrick and deliver stellar end user experiences
• Building responsive and elegant mobile and desktop web UIs
• Test, debug and maintain the application software throughout the product lifecycle
• Architect, develop and maintain front-end libraries

Desired Candidate Profile

• You love working with JavaScript and are very familiar with JavaScript design patterns and can build fairly complex UI
• Have at least 2 years experience in development of responsive web/mobile applications using advanced JS and web technologies
• And with at least 1 year of experience building frontend UI with a framework like ReactJS
• Youre very comfortable in writing HTML and CSS and love designing beautiful webpages
• Have good communication skills, strong work ethics And are comfortable with agile, iterative development practices and code reviews

• Web-based portal development for end to end process management
• Work with the real-time feedback from users to make the product better
• Discover, design, develop, deploy, debug. Repeat! In highly agile environment.

Sportz Interactive (SI) works with its clients and partners to revolutionize the sports fan experience across consumption points by creating best-in-class, kickass products. SI was founded in 2002 as a B2B sports content business. Through the years, it gained immense reputation for its state-of-the-art hosted solutions, digital simulators, match centers and fantasy games. Sportz Interactive has a fantastic reputation in the online sports community, having worked with clients across the globe including the likes of The International Cricket Council, STAR Sports, Yahoo!, AOL, Eurosport, Castrol, Web 18, NDTV, Nimbus, Times of India, Rediff.com and Singtel amongst others. 

Sportz Interactive provides in-depth sports information and content and specializes in product development for the web, mobile and other interactive platforms. 
http://www.sportzinteractive.net/">www.sportzinteractive.net 

2+ years of experience on web technologies.

Primary Responsibilities:

• Coding and debugging pure JavaScript, polyglot and multi-lingual applications
• Working closely with Technical Lead/Project Manager to ensure development timelines are met
• Contribute with ideas to improve system design or streamline product delivery
• Working with challenging applications involving Real Time Data
• Working on different platforms including the usage of the Native SDKs provided on JavaScript

Required Skills:

Mandatory: Passionate about sports, Problem solving, Team player, Target & Result oriented.

Functional: HTML5, CSS3, JavaScript, Vue.js, Typescript, Stimulus JS, AJAX, Browser performance & optimization, Asynchronous requests handling and partial page updates, Browser Developer Tools, GIT and JIRA.

• 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
• Strong proficiency in JavaScript, including DOM manipulation and the JavaScript object model
• 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
• 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
• Ability to work through new and difficult React Native Issues and contribute to libraries as needed.
• Ability to create and maintain continuous integration and delivery of React Native applications.

We seek to identify top React JS talent to join us to grow with our dev team. As a React.js Developer, you will be involved from conception to completion with projects that are technologically sound and aesthetically impressive.

Required Skills:
Strong proficiency in JavaScript, including DOM manipulation and the JavaScript object model
Experience working on web technologies (HTML/CSS)
Good experience in React.js and its core principles
Prior experience with popular React.js workflows (such as Flux or Redux)

Please refer your friends or colleagues who might be suitable for this position.