Node.js Backend Developer

Magma Math, is a K–12 platform that helps teachers make smarter instructional decisions and encourages deeper student-driven discussions and collaboration around math.We're a fast-growing, well-funded company in the top tier of European EdTech — backed by $40M Series A and growing like crazy. But we're keeping it lean, smart, and fun — without the corporate fluff.Our work has a real impact: we’re helping students around the world get better at math, and we're recognized by education experts for improving how math is taught and learned.We're based in Warsaw, but our team spans New York 🗽, Stockholm 🇸🇪, and London 🇬🇧 — and you’ll have chances to meet everyone in person!On-site role: We expect candidates to work from office 4 days a week.🧠 What you’ll work withTypeScript, Node.js, NestJSMongoDB, Redis, RabbitMQAWS and microservicesLots of integrations (we do that a lot)Mix of greenfield and legacy systems (nothing scary)✨ What you'll doContribute to the design and implementation of scalable, high-performance backend servicesWork within our microservices architecture, handling both maintenance and greenfield projectsOptimize, maintain, and continuously improve existing systems while building new featuresTake ownership of the solutions you create, from concept through deployment and ongoing maintenanceCollaborate with PMs, QAs, and other developers to create the best experience for our users🔍 What we’re looking for5+ years experience with a history of impactful contributionsStrong problem-solving skills and a passion for writing clean, efficient codeProficiency in system design and making architectural decisionsA proactive attitude, with the ability to thrive in a fast-paced, growing startup environmentConfident English – you can easily communicate complex technical conceptsTeam player – no lone wolves. You’re comfortable discussing tough problems, asking questions, and challenging ideas respectfullyCritical thinking - You’re comfortable discussing tough problems and asking hard questions!✅ What we offerSalary up to 30,000 PLN/month (+VAT)26 days of leave covered by a yearly bonusLong term incentive plan10 days of paid sick leaveYearly team meetups in Stockholm with all the people in company ✈️Great Warsaw office – full floor just for us with snacks, drinks, and top-tier coffee ☕Multisport Plus cardTable football and chill board game nights with pizza & beer 🍕🍻Occasional movie nights 🎬We take your wellbeing very seriously 🧘‍♂️ — we want everyone to feel comfortable here📋 Recruitment Process:20-min intro callTechnical task to do at home with a following technical interview (digital)Culture fit interview in officeInterview with Product leadership (digital)🚀 Ready to make an impact?Apply now and let's build something great together!