Frontend Developer

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.

• As a lead engineer, you will be expected to execute and deliver large and complex projects end-to-end, with or without the involvement of other team members.
• Participate in code reviews, app architecture, and design discussions.
• Ensuring timely delivery of all product deliverables.
• Be the go-to person for the team for guidance and troubleshooting. 
• Mentoring junior developers and set best practices for coding, reviews, etc.
• Ensuring performance and scalability in all new product features being developed. 

• Overall of 5+ years expertise in writing HTML/CSS/JavaScript 
• Experience in Angular and preferably React.js
• Expertise in database modeling, preferably relational DB, spotting DB bottlenecks, and writing optimized DB queries.
• Expertise in all common AWS cloud technologies, knowledge of CI/CD tools, and workflows.

Job description:- 

• Strong experience of Angular 2+ and above along with other technologies like HTML5, CSS, jQuery, AJAX with good knowledge of ECMA Scripts.
• Strong knowledge of JS Fundamentals.
• Design & development of Angular applications as per desired specifications, along with experience in frameworks/libraries like jQuery, Bootstrap, Typescript etc.
• Architecture design, development, testing and maintenance of Web Apps, Implementation based on Angular Application MVC Patterns.
• Own end to end product modules/features (from the requirement to going live)- Design & code review, troubleshoot & help team members on issues.
• Gather requirements by interacting directly with the end-users.
• Research on open source framework/technology required for developing the feature/application.

 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.

Technical Solutions Specialist, App

• Understanding of products’ integration flows from a technical and sales perspective
• Work with the internal stakeholders in Criteo to understand client business objectives
• Providing feedback to our internal and/or client’s engineering team
• Be responsible and have ownership for the designed end to end solution’s projects
• Work in a fast-paced innovative environment and be cool under pressure
• Thrive when confronted with complex problems that require innovative solutions
• Act as a Subject matter expert on App related queries
• Leverages technical knowledge of products to meet customer needs
• Participate with the wider global team to improve and develop new tools and processes.
• Play a leading role in the testing and deployment phases of new products and customized solutions for our app business.
• Proactive development of tools and solutions that will have an impact on our campaign performance or set up to support the growth of our South APAC team
• Provide guidance to other team members on areas of expertise
• Identify bugs, report them, and work close to our internal teams for resolution

Who You Are

• Engineering background with a computer science-related degree
• Fluent in spoken & written English
• Experience with ad technology is a strong advantage, though not mandatory
• Experience in developing or reviewing/debugging code for mobile apps, ideally on both iOS and Android
• Experience with development and/or debugging MMP partner SDK's like AppsFlyer, Branch etc. will be a big plus
• Other web programming languages is a plus (JavaScript, HTML, …)
• Strong interpersonal and communication skills across all levels of interlocutors
• Ability to work on multiple projects at once, prioritize and execute a large number of tasks, and resolve issues quickly
• Proactivity associated with a “can do” way of working
• Problem-solving and a positive attitude in a fast-paced environment
• Autonomous personality and interested in taking initiatives and leading on projects
• Team spirit oriented, sharing best practices, and open to train other team members
• Attention to detail to act as a consultant and be reactive in front of any potential situations
• Passion for new media, internet trends, and continual learning

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