Frontend Developer
Helix by HL
Software Engineering
Mumbai, Maharashtra, India
Posted on Oct 1, 2025
Responsibilities
- Develop the web app and landing portals, which are user-facing features.
- Ensure the technical feasibility of UI/UX design.
- Work closely with the design and product team to ensure design correctness.
- Build reusable code and libraries for future use.
- Optimize the application for maximum speed and scalability.
- Assure all user input is validated before submitting it to the backend.
- 5+ years of JavaScript, React.js, Next.js, and professional web development experience.
- Solid understanding of HTML5 LESS/CSS3
- Expert understanding of JavaScript.
- Experience with. React.js & Next.js .
- Experience with Figma.
- General knowledge of both front-end and back-end technologies.
- Experience with Datatables.
- Experience mentoring other developers.
- Experience with REST or GraphQL.
- Experience using token-based security, such as OAUTH or JWT.
- Must have knowledge of cross-browser development.
- Experience on a green-field project, designing and building an online platform.
- Basic knowledge of UX principles.
- Strong knowledge of security regarding common website vulnerabilities.
- Full-stack development experience is a huge plus.
- An understanding of or exposure to financial capital markets and various financial instruments ( as stocks, ETFs, Mutual Funds, etc. ) is nice to have.