Frontend Developer

Certa (getcerta.com) is a Silicon Valley-based tech product start-up that is automating the vendor, supplier, and other stakeholder onboarding processes (think background checks, agreements, and the works) for companies across industries and geographies. With multiple Fortune 500 and Fortune 1000 clients, at Certa's tech team, you will be working on stuff that is changing the way huge companies do business.

Must Haves:

• Experience developing enterprise-grade quality software.
• 3+ years of experience building large-scale front-end applications using React.
• 3+ years of experience using type-safe JavaScript-based languages, such as TypeScript.
• Understanding of modern frontend ecosystems, including Bundling(preferably using vite), Linting, Testing and Releasing
• Success with mentoring mid-level & junior Engineers.
• Experience in Agile software development methodologies.
• Experience writing automated tests (e.g., Vitetest, Cypress, Jest, Testing Library).
• Experience in building, scaling & maintaining a design system from scratch.
• Experience in improving rendering as well as delivery performance for front-end applications.
• Experience in writing semantic HTML.
• Experience in building scalable, responsive, and cross-browser-compatible web applications.
• Experience in a peak-performance organization, preferably a tech startup.
• Experience working with a remote team.
• Data analysis experience, and understanding of how analytics can help with product decisions.

Bonus:

• Experience building integrations and data synchronizations with event pub/sub-models.
• Experience with WebGL
• Experience in building offline applications using Web Workers
• Open source contributions.
• Running his/her own blog.
• Experience with building 100% keyboard and screen reader-accessible applications.
• Experience setting up and customizing JavaScript tooling and building systems.

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.

Key Responsibilities:

• Design and implement scalable server-side solutions using Java.
• Write optimized front-end code using HTML, CSS, and Javascript
• Write unit, automation, and integration tests
• Implement quality application logging for operational monitoring at scale
• Investigate, debug and resolve production site issues
• Work with co-located teammates to deliver on common goals

TECHNICAL & FUNCTIONAL REQUIREMENTS:

• Professional experience in enterprise Java software development using Spring MVC frameworks, RESTful APIs, and SOA
• Proficiency in HTML/CSS/JavaScript/jQuery
• Experience with Docker, Kubernetes, and microservices
• Experience with Selenium for UI automated tests written in Cucumber or Scala will be a plus
• Working knowledge of design patterns and CI/CD principles
• First class communication skills in written and verbal form
• Outstanding problem-solving skills
• A commitment to producing high-quality code with an attention to detail
• Dedication and a self-motivated desire to learn
• A collaborative, team-orientated attitude
• Experience working in the Cloud (AWS)
• API development experience
• Exposure to monitoring tools such as ELK, Splunk

Software Solution Engineer – UI Development

(1-3 yrs of experience)

• 1-3 years of software development experience in Web Development.
• Willing to learn new technologies and frameworks.
• Demonstrable knowledge of web technologies including HTML, CSS, JavaScript,
AJAX,Bootstrap,React JS, jQuery etc.
• Self-starter with strong self-management skills.
• Ability to organize and manage multiple priorities. Basic knowledge of programming
languages.
• A team player with high level of dedication.

We are looking for a creative, skilled UI developer to design web apps with functionality and aesthetics in mind. The UI developer will work with back-end developers and front-end developers to ensure that the applications are optimized for several devices and presented attractively. To be successful as a UI developer you should have excellent knowledge of HTML, JavaScript, and CSS. In addition to this, you must work well in a team as there are several individuals involved in the development process.

• Work with other developers to ensure that the web apps are functional and visually appealing.
• Liaise with the client to gauge their needs and expectations.
• Plan the layout of the applications.
• Ensure that the applications are optimized for various devices.

• Proficiency in HTML, JavaScript, jQuery, and CSS.
• Knowledge of Adobe Illustrator.
• Good interpersonal skills.
• Understanding of key design principles.
• Good problem-solving skills.

• Develop new user-facing features
• Build reusable code and libraries for future use
• Ensure the technical feasibility of UI/UX designs
• Optimize application for maximum speed and scalability
• Assure that all user input is validated before submitting to back-end
• Collaborate with other team members and stakeholders

• Proficient understanding of web markup, including HTML5, CSS3
• Basic understanding of server-side CSS pre-processing platforms, such as LESS and SASS
• Proficient understanding of client-side scripting and JavaScript frameworks, including jQuery
• Good understanding and knowledge of advanced JavaScript libraries and frameworks, such as AngularJS, KnockoutJS, BackboneJS, ReactJS, DurandalJS etc.
• Good understanding of asynchronous request handling, partial page updates, and AJAX
• Basic knowledge of image authoring tools, to be able to crop, resize, or perform small adjustments on an image
• Proficient understanding of cross-browser compatibility issues and ways to work around them.
• Proficient understanding of code versioning tools, such as Git
• Good understanding of SEO principles and ensuring that application will adhere to them

Role

• Work as part of a small team to build React Native iOS / Android applications.
• Design, build and maintain excellent React Native applications with clean code.
• Implement pixel perfect UI's that match designs.
• Implement clean, modern, smooth animations and transitions that provide an excellent user experience.
• Integrate third-party API's.
• Developing new user-facing features using React Native.
• Building reusable components and front-end libraries for future use
• Translating designs and wire-frames into high-quality code
• Optimising components for maximum performance across a vast array of android and ios devices.
• Release applications to IOS and Google Play stores.
• Work with native modules when required.

Skills

• Strong proficiency in React Js, React Native, JavaScript, TypeScript, Object Oriented Programming - 2+ years of professional experience working with React Native
• Deep knowledge of component state management experience (specifically in React Native)
• Familiarity with native build tools, like XCode, Gradle
• Good understanding of Redux
• 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.
• Ability to understand business requirements and translate them into technical requirements
• A knack for bench-marking and optimisation

• Rockstar Coworkers
• Friendly & Energetic Environment
• 21 paid leaves
• Reward Employees with Experiences
• Free Food & Coffee
• Team Outings from time to time
• Work From Home Option Available
• Treat all employees as equals

Tech Stacks used  by us : 

Frontend : VueJs 

Backend : NodeJs

Key skills: ReactJs, HTML5, CSS3, REST Protocols, NodeJs, JEST, GraphQL.

Responsibilities:

• Participation in Company's product and implementation as a Frontend developer.
• Build the front-end for our mobile and web products
• Convert wireframes into working UI interfaces
• Write REST calls to interact with our back-end API
• Participation in research activities.
• Build reusable code and libraries for future use
  
  

Requirements:

• Keen design eye to translate wire frames into pixel perfect web pages
• Excellent JSON/DOM manipulation skills
• Should have strong key skills in HTML5, CSS and advanced JavaScript and the ability to turn design mock-ups into great looking sites with user interactions.
• Must also be up-to-date with cross-browser and cross-platform issues, have a good eye for detail and be able to work to tight deadlines
• Experience in building Scalable Apps
• Experience with third- party libraries, social media integration and APIs.
• Work on building product from scratch and improving application performance.
• Should understand and have knowledge on the application security practices/vulnerabilities
• Understands Web Products and understand Performance of the application.
• Linux and Unix Skills
• Hands on experience in collecting and analyzing/improving Application analytics
• Good understanding in User Patterns, CTRs and closely work with UX and Product team in a dynamic environment
• Understanding of server-side CSS pre-processing platforms, such as LESS and SASS
• Proficient understanding of code versioning tools, such as Git / SVN
• Good understanding of asynchronous request handling, partial page updates, and AJAX

Industry Background : Product based startup
Location : Hiranandani - Powai, Mumbai. (Remote working option available for candidates residing out of Mumbai)
Working Days & Timings : Monday to Saturday (Alternate Saturdays off), 12pm - 9pm.

Kindly apply if interested.