PstrongJob Title /strong: Senior Full-stack Engineer (Node.js / React) /ppstrongTeam /strong: Market (Trading Liquidity) /ppstrongLocation /strong: Onsite - Ticino, Switzerland /ppbr/ppstrongAbout Us /strong /ppWe are a new, well-funded RD 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. /ppWe 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: /pullistrongGolden Ratio Exchange: /strong An advanced, security-first exchange for professional traders. /lilistrongGRX Pay: /strong A seamless payment gateway that allows merchants to accept crypto and receive fiat. /li /ulpbr/ppThis 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 RD hub in strongTicino, Switzerland /strong, and are looking for core team members to build this new culture with us. /ppbr/ppstrongThe Role /strong /ppWe are looking for a Senior Full-stack Engineer to be the core technical pillar of our new strongMarket team /strong. This is a hands-on technical leadership role emwithout /em people management responsibilities. This role is at the very heart of our exchange, focusing on high-performance, real-time trading and liquidity systems. /ppIn our structure, the "Manager" defines the emwhy /em and emwhat /em (product) and manages the emwho /em (people). As the "Senior Engineer," you are the undisputed technical expert responsible for the deep emhow /em. You will own the architecture and execution of our strongcore trading engine and liquidity management systems. /strong /ppYour mission is to architect, 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 also be responsible for re-architecting our legacy trading systems and migrating them to a modern, scalable, and reliable architecture. /ppstrongThis is a full-time, onsite role at our new RD hub in Ticino, Switzerland. /strong 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. /ppbr/ppstrongWhat You'll Do /strong /pullistrongArchitect the Trading Engine: /strong Design, build, and maintain the new high-performance services for our exchange using Node.js (Nest.js), including: /liliThe strongOrders /strong management system. /liliThe strongTrade matching /strong engine. /liliThe core strongLedger /strong for recording all transactions. /lilistrongBuild Liquidity Systems: /strong Architect and implement the systems that manage our platform's liquidity, including: /lilistrongAutomated balancing /strong of internal funds. /lilistrongAutomated external balancing /strong via integrations with other platforms (e.g., Kraken). /liliManual tools and reporting for the liquidity team. /lilistrongFull-Stack Development: /strong Build and maintain the user-facing React components for our trading products, such as: /lilistrong"Trading view with candles" /strong. /liliThe strong“Quick convert” /strong feature. /liliThe strong“Crypto Onramp” /strong (fiat-to-crypto) journey. /lilistrongLegacy Migration: /strong Analyze the existing legacy codebase for trading and liquidity. Design and execute a clear migration strategy to the new architecture with zero downtime. /lilistrongTechnical Leadership: /strong Act as the primary technical mentor for other engineers on the team, performing in-depth code reviews and solving the most complex challenges related to performance, concurrency, and reliability. /lilistrongPerformance Tuning: /strong Obsess over performance. You will be responsible for profiling, optimizing, and ensuring low-latency communication across our trading systems (e.g., via RabbitMQ, Redis, and WebSockets). /li /ulpbr/ppstrongWhat We're Looking For /strong /pullistrongExperience: /strong 5+ years of professional experience in full-stack development. /lilistrongDomain Expertise: /strong strongDirect experience in FinTech, high-frequency trading (HFT), or building real-time exchange/brokerage systems is a hard requirement. /strong You must have experience building high-performance, low-latency, and highly reliable systems. /lilistrongBack-end Expertise: /strong Expert-level knowledge of strongTypeScript /strong and strongNode.js /strong. /lilistrongReal-time Systems: /strong Deep experience with strongRabbitMQ /strong (or similar message brokers) and strongRedis /strong. You must understand asynchronous, event-driven architecture. /lilistrongDatabase Skills: /strong Deep experience with relational databases (strongPostgreSQL /strong) and optimizing complex queries for performance. /lilistrongFront-end Proficiency: /strong Strong proficiency in strongReact.js /strong and experience with real-time front-ends (e.g., strongWebSockets /strong). /lilistrongLegacy Systems Experience: /strong Demonstrable experience working with and refactoring large, existing codebases. /lilistrongLocation: /strong Willingness to work strongonsite in Ticino, Switzerland /strong. Relocation assistance is available for exceptional candidates. /lilistrongMentorship: /strong A passion for mentoring other engineers and raising the technical bar for the entire team. /li /ulpbr/ppstrongBonus Points /strong /pulliDirect experience building a cryptocurrency exchange matching engine. /liliExperience with real-time data visualization libraries (e.g., TradingView, D3.js). /liliExperience integrating with third-party exchange APIs (e.g., Kraken, Binance). /li /ulpbr/ppstrongWhat We Offer /strong /pullistrongHigh-Impact Role: /strong A unique opportunity to be the founding technical expert for our core trading and liquidity engine. /lilistrongClear Ambition: /strong The chance to join a company with a clear goal of becoming the #1 crypto platform in the EU. /lilistrongClear Career Path: /strong A role focused purely on technical excellence and architecture, without the burden of people management. /lilistrongOnsite Culture: /strong A fantastic opportunity to build a new RD culture from the ground up in our modern Ticino, Switzerland office. /lilistrongGreenfield Culture, Brownfield Code: /strong A rare chance to join a new company culture with no baggage, while solving the interesting technical challenges of a mature product. /li /ul