Job Title: Full-stack Engineer (Node.js / React)
Team: Market (Trading & Liquidity)
Location: Onsite - Ticino, Switzerland
About Us
We are a new, well-funded R&D company with a clear vision: to build the future of cryptocurrency infrastructure. Our ambition is to become the #1 cryptocurrency platform in the EU by market share within the next three years.
We are starting with a proven, operational crypto platform and are now assembling a world-class team to evolve it to the next level. Our core products include:
* Golden Ratio Exchange: An advanced, security-first exchange for professional traders.
* GRX Pay: A seamless payment gateway that allows merchants to accept crypto and receive fiat.
This is a rare opportunity to join a fresh company culture from day one, while working on the exciting technical challenges of a mature product. We are building our foundational R&D hub in Ticino, Switzerland, and are looking for core team members to build this new culture with us.
The Role
We are looking for a skilled Full-stack Engineer to be a key member of our new Market team. This is a hands-on builder role at the very heart of our exchange, focusing on high-performance, real-time trading and liquidity systems.
You will work closely with the Senior Engineer and Manager to build and maintain the low-latency microservices for our exchange, as well as the sophisticated systems that manage our internal and external market liquidity. You will be a key contributor to re-architecting our legacy trading systems and migrating them to a modern, scalable, and reliable architecture.
This is a full-time, onsite role at our new R&D hub in Ticino, Switzerland. Given the critical, high-performance nature of the trading engine, we believe co-location is essential for rapid innovation and building a resilient engineering culture.
What You'll Do
* Build and Maintain: Actively contribute to building and maintaining the high-performance services for our exchange using Node.js, including:
* The Orders management system.
* The Trade matching engine.
* The core Ledger for recording all transactions.
* Contribute to Liquidity Systems: Help build and maintain the systems that manage our platform's liquidity, including:
* Automated balancing of internal funds.
* Automated external balancing via integrations with other platforms (e.g., Kraken).
* Manual tools and reporting for the liquidity team.
* Full-Stack Development: Build and maintain the user-facing React components for our trading products, such as:
* "Trading view with candles".
* The “Quick convert” feature.
* The “Crypto Onramp” (fiat-to-crypto) journey.
* Legacy Migration: Support the Senior Engineer in analyzing the existing legacy codebase for trading and liquidity and execute the migration strategy.
* Uphold Standards: Write high-quality, maintainable, and well-tested code, following the best practices for performance and reliability set by the team.
* Performance Tuning: Help profile, optimize, and ensure low-latency communication across our trading systems (e.g., via RabbitMQ, Redis, and WebSockets).
What We're Looking For
* Experience: 3+ years of professional experience in full-stack development.
* Domain Expertise: Experience in FinTech, trading, or building real-time systems is strongly preferred. You must have a demonstrable interest in high-performance, low-latency systems.
* Back-end Expertise: Strong proficiency in TypeScript and Node.js. Experience with Nest.js is a major plus.
* Real-time Systems: Strong experience with RabbitMQ (or similar message brokers) and Redis. You must be comfortable with asynchronous, event-driven architecture.
* Database Skills: Solid experience with relational databases (PostgreSQL) and writing efficient queries.
* Front-end Proficiency: Good experience with React.js and experience with real-time front-ends (e.g., WebSockets).
* Legacy Systems Experience: Experience working with and refactoring existing codebases. You are comfortable diving into code you didn't write.
* Location: Willingness to work onsite in Ticino, Switzerland.
* Team Player: A collaborative attitude and a desire to learn and grow with the team.
Bonus Points
* Direct experience building a cryptocurrency exchange matching engine.
* Experience with real-time data visualization libraries (e.g., TradingView, D3.js).
* Experience integrating with third-party exchange APIs (e.g., Kraken, Binance).
What We Offer
* High-Impact Role: An opportunity to make a huge impact by building our core trading and liquidity engine.
* Clear Ambition: The chance to join a company with a clear goal of becoming the #1 crypto platform in the EU.
* Clear Career Path: A role with a clear path for growth in technical excellence, with mentorship from senior engineers.
* Onsite Culture: A fantastic opportunity to build a new R&D culture from the ground up in our modern Ticino, Switzerland office.
* Greenfield Culture, Brownfield Code: A rare chance to join a new company culture with no baggage, while solving the interesting technical challenges of a mature product.