Senior Frontend / Full-Stack Engineer (Chennai)

Big Oh Tech; Chennai District; On-site; INR 4,000,000 - 7,000,000; Full time

Job summary

Big Oh Tech is seeking a Senior Frontend / Full-Stack Engineer to join our real-time trading platform team in Chennai. You will own frontend features using React and TypeScript, work with WebSockets and REST APIs, and contribute to charting and SDK development. A hands-on role with ownership and cross-stack collaboration is expected.

Join a fast-paced fintech stack that includes Go backend work when needed, and help accelerate product roadmap with technical leadership and minimal supervision.

Qualifications

• 710 years of frontend engineering experience.
• Strong React + TypeScript expertise.
• Experience with large, complex, stateful applications.
• Knowledge of frontend architecture and performance optimization.
• Experience with WebSockets and real-time data-heavy apps.
• Experience in FinTech, trading, financial services, or market-data products.

Responsibilities

• Build and ship features for a real-time, data-intensive trading platform.
• Develop high-performance React + TypeScript applications.
• Work with WebSockets, REST APIs, and real-time market data.
• Contribute to charting, visualization, and SDK development.
• Work across the stack when required, including Go backend.
• Optimize frontend performance, scalability, and reliability.
• Own features end-to-end from requirement to production.
• Mentor engineers and contribute to technical leadership.
• Collaborate with CEO and product team to unblock roadmap.

Skills

React

TypeScript

WebSockets

FinTech

Real-time data

Job description

Senior Frontend / Full-Stack Engineer

Location: Sholinganallur, Chennai In-person Experience: 710 Years

Employment: Full-Time (FTE)

Joining: ASAP

About the Role

We are looking for a Senior Frontend Engineer with solid React and TypeScript expertise and experience in financial services/trading products. You will work closely with the CEO across our real-time trading terminal, charting platform, SDK, and core product roadmap. This is a hands-on role requiring strong ownership, technical decision-making, and the ability to deliver with minimal supervision.

Key Responsibilities

• Build and ship features for a real-time, data-intensive trading platform.
• Develop high-performance React + TypeScript applications.
• Work with WebSockets, REST APIs, and real-time market data.
• Contribute to charting, visualization, and SDK development.
• Work across the stack when required, including Go backend.
• Optimize frontend performance, scalability, and reliability.
• Own features end-to-end from requirement to production.
• Mentor engineers and contribute to technical leadership.
• Work closely with the CEO and product team to unblock and accelerate the roadmap.

Must-Have Skills

• 710 years of frontend engineering experience.
• Strong React + TypeScript expertise.
• Experience with large, complex, stateful applications.
• Strong knowledge of frontend architecture and performance optimization.
• Experience with WebSockets and real-time/data-heavy applications.
• Positive understanding of REST APIs and backend systems.
• Experience in FinTech, trading, financial services, or market-data products.
• High ownership, autonomy, and strong problem-solving skills.

Good to Have

• Canvas / D3 / WebGL experience.
• Trading terminal or charting platform experience.
• SDK / developer-facing library development.
• Go experience.
• Monorepo/Nx and i18n experience.
• IIT/NIT/IIM background nice to have, not mandatory.

What Were Looking For

A senior, hands-on engineer who can hit the ground running, make strong technical decisions, understand trading workflows, and independently drive complex initiatives from idea to production. .