Sr Nodejs Developer at KoinBX · Madurai · 5 - 8 years · ₹1L - ₹8L / yr · Profitable · Posted 24 Jan 2025

- 5+ years of experience in backend development with a strong focus on Node.js and TypeScript.
- Strong understanding of Node.js frameworks.
- Proficiency in TypeScript, with experience in building scalable applications.
- Solid understanding of RESTful API design, WebSocket, and asynchronous programming patterns.
- Experience with databases (SQL/NoSQL), including MySQL, MongoDB, Redis, etc.
- Familiarity with blockchain technologies and cryptocurrency exchanges is a plus.
- Strong knowledge of security principles and best practices for web applications.

About KoinBX
About
KoinBX is India's most trusted and fastest-growing crypto exchange, dedicated to providing a secure, compliant, and user-friendly platform for crypto enthusiasts and traders across India. As the most trusted and fastest-growing crypto exchange, KoinBX is your gateway to the future of finance, with a user-centric approach, advanced security measures, and an extensive array of cryptos. Our vision is to be the cornerstone of a future where every individual, regardless of background, discovers and harnesses the boundless opportunities of digital assets. KoinBX opens the doors to a future where digital assets play a transformative role in shaping the financial landscape. Our mission is to empower traders by offering a secure and trusted crypto trading platform that is easily accessible to all. We promise to be the gateway ushering in a future of limitless financial possibilities in the realm of digital assets. We provide advanced tools and confidence to navigate the Indian crypto market. We are proud to be 100% compliant with Indian regulations, safeguarding users' funds through robust security measures, including advanced encryption techniques and multi-factor authentication. With over 120 listed cryptos and 150+ active trading pairs, including cryptos like Bitcoin, Ethereum, and Ripple, we provide a comprehensive platform with an intuitive interface, real-time portfolio tracking, and timely price alerts for informed trading decisions. At KoinBX, we offer a wide suite of features designed to meet the diverse needs of both beginner and experienced traders. From instant KYC authentication to low trading fees and high liquidity, our platform is equipped with everything you need to trade cryptos. Join the 5 million+ strong crypto community on KoinBX and begin your crypto journey today. Whether you're a seasoned trader or just getting started, KoinBX is your trusted partner for all your cryptocurrency trading needs.
Candid answers by the company
KoinBX is your gateway to the future of finance, with a user-centric approach, advanced security measures, and an extensive array of cryptos.
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Apply and complete the screening questions on Just Interview:
https://app.justinterview.ai/apply/10004915?src=cutshort
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Website: https://lucidgrowthmedia.com/
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(Experience in some or most of the following is preferred)
- Node.js
- TypeScript
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Dino Ventures is a Bharat-focused, app-first technology company with 5M+ app downloads across a portfolio of 10+ live applications. Our flagship products—including Samaj Saathi, Samjho, and Stick—serve millions of users across India, solving meaningful problems at scale.
We’re building products that impact everyday lives, and we’re looking for experienced engineers who thrive on ownership, performance, and shipping high-quality software.
What You’ll Do
- Architect, build, and scale high-performance, real-time applications across the entire stack.
- Design robust backend services, APIs, and distributed systems that power millions of users.
- Build fast, responsive, and polished user experiences with a strong focus on performance and usability.
- Optimize databases, caching layers, and application architecture for scalability, reliability, and cost efficiency.
- Lead technical design discussions, make architectural decisions, and mentor fellow engineers.
- Drive projects from concept to production with complete ownership.
- Collaborate closely with product and design teams to build impactful user experiences.
- Leverage modern AI-assisted development tools (Claude Code, Codex, Cursor, etc.) to maximize engineering productivity.
Our Tech Stack
Backend
- Node.js
- TypeScript
- PostgreSQL
- Redis
- Elasticsearch
Frontend
- SvelteKit
- TypeScript
- Tailwind CSS
- tRPC
- TanStack Query
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What We’re Looking For
- 2+ years of experience building and shipping production-grade software.
- Strong expertise in TypeScript/JavaScript across frontend and backend development.
- Deep understanding of software engineering fundamentals, system design, and scalable architecture.
- Strong knowledge of relational databases, indexing strategies, query optimization, and database internals.
- Experience building scalable REST APIs and real-time systems.
- Familiarity with caching, asynchronous processing, networking, and distributed systems.
- Experience using modern AI coding tools to accelerate development workflows.
- Strong attention to engineering quality, including latency, reliability, race conditions, bundle size, and user experience.
- Ability to balance speed with maintainability, making thoughtful engineering trade-offs.
- Self-driven with a strong sense of ownership and a product mindset.
Intent > Experience > Skills
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- Build products that solve real problems for millions of Bharat users.
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- High ownership, minimal bureaucracy, and fast decision-making.
- Collaborate with an ambitious, product-first engineering team.
- See your work reach production from Day 1.
- Shape the technical direction of products used at massive scale.
If you enjoy solving challenging engineering problems, care deeply about software craftsmanship, and want your work to make a real-world impact, we’d love to hear from you.












