Founding Full-Stack Engineer — Fintech/Crypto Trading Platform

About the Product

We’re building a web3 platform focused on crypto options trading. It's like building an exchange from scratch.

The product operates in a real-time environment where market data, user actions, and financial state must stay consistent and reliable at all times. We work with live trading flows, user balances, deposits and withdrawals, and systems where correctness and trust are critical.

At the same time, we’re an early-stage startup — small team, fast iterations, and product decisions driven by user value rather than process.

This is a high-responsibility environment where engineering quality, speed, and product thinking matter equally.

The Role

We’re looking for a highly autonomous Full-Stack Engineer to own the entire platform layer outside of the trading engine.

You will be the solo full-stack owner of everything related to the user-facing system:

• Web application and UI
• Authentication and account flows
• Deposits, withdrawals, balances
• User dashboards, analytics, and statistics
• Product features and UX improvements

This role requires strong product thinking, architectural ownership, and the ability to move fast with minimal supervision.

Tech Stack & Environment

• React / Next.js (TypeScript)
• Nest.js
• WebSockets (real-time data)
• REST APIs
• PostgreSQL
• Docker
• Direct work with VPS servers
• CI/CD pipelines (self-managed)

You will be responsible not only for development, but also for:

• Deploying and debugging your services
• Setting up and maintaining CI/CD
• Monitoring and fixing production issues
• End-to-end ownership of your features

AI-First Development

We actively use AI in development.

You’ll be working with tools like Cursor/Claude Code.

The expectation is that you are comfortable using AI to move faster, explore solutions, and improve productivity.

What You’ll Work On

• Building high-quality product features end-to-end
• Working with real-time market and user data
• Designing systems that handle money safely and consistently
• Ensuring correctness of balances, transactions, and financial logic
• Creating polished UI with strong attention to detail, animations, and UX
• Integrating analytics, tracking, and product metrics
• Participating in product planning and decision-making

We are user-first.

Consistency, reliability, and trust are critical — this is a financial product.

What We’re Looking For

• 4+ years of full-stack experience
• Strong React / Next.js / TypeScript
• Solid backend experience (Nest.js)
• Strong understanding of PostgreSQL and data modeling
• Experience working with WebSockets or real-time systems
• Ability to design architecture and own systems independently
• Comfortable working directly with servers, Docker, and deployments
• Experience setting up and maintaining CI/CD
• Strong debugging skills across the full stack

Mindset matters more than tools:

• Startup experience or comfort in fast-moving environments
• Product mindset — you care about user experience and outcomes
• High autonomy — you don’t wait for detailed instructions
• Ability to make pragmatic decisions quickly
• Strong code quality standards and engineering taste
• Ability to quickly understand and work with existing code
• Willingness to jump into critical issues when needed

Why This Role Is Interesting

• Founding engineer position with high product ownership
• Strong growth opportunity through direct mentorship and hands-on architecture work
• Direct impact on how the platform looks and works
• Minimal bureaucracy, fast decision cycles
• Work directly with the CTO and a small, strong engineering team
• Opportunity for future equity/options
• Real product challenges: real-time systems, financial accuracy, production ownership