Full-Stack Engineer

Job Title: Full-stack Engineer (Node.Js / React)Team: Market (Trading & Liquidity)Location: Onsite - Ticino, SwitzerlandAbout UsWe 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 inTicino, Switzerland, and are looking for core team members to build this new culture with us.The RoleWe are looking for a skilled Full-stack Engineer to be a key member of our newMarket 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 DoBuild and Maintain:Actively contribute to building and maintaining the high-performance services for our exchange using Node.Js, including:TheOrdersmanagement system.TheTrade matchingengine.The coreLedgerfor recording all transactions.Contribute to Liquidity Systems:Help build and maintain the systems that manage our platform's liquidity, including:Automated balancingof internal funds.Automated external balancingvia 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 ForExperience: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 inTypeScriptandNode.Js.Experience withNest.Jsis a major plus.Real-time Systems:Strong experience withRabbitMQ(or similar message brokers) andRedis.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 withReact.Jsand 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 workonsite in Ticino, Switzerland.Team Player:A collaborative attitude and a desire to learn and grow with the team.Bonus PointsDirect 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 OfferHigh-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.