**ABOUT SINCH** Sinch is pioneering the way the world communicates. More than 150,000 businesses — including Google, Uber, Paypal, Visa, Tinder, and many others — rely on Sinch's Customer Communications Cloud to power engaging customer experiences through mobile messaging, voice, and email. Whether you need to verify users or craft omnichannel campaigns, Sinch makes it easy. Our AI-infused Super Network, APIs, and applications ensure you can connect with your customers reliably and securely, at every step of their journey. At Sinch we "Dream Big", "Win Together", "Keep it simple", and "Make it Happen". These values are our foundation! **DESCRIPTION** We are looking for a Senior Full-Stack Engineer to join our Customer Analytics team in Stockholm. This role is a 50/50 split between backend and frontend development, with a strong focus on Node.js services and modern React-based web applications. The team is new, which means real ownership and the chance to shape how we build from the ground up. Tech stack: Node.js, React, TypeScript You will: - Design, develop, and maintain backend services in Node.js - Build modern, scalable frontend applications using React and TypeScript - Contribute to architectural decisions across backend and frontend - Improve performance, scalability, and reliability of core systems - Collaborate closely with product, design, and other engineering teams - Participate in DevOps practices (CI/CD, monitoring, cloud deployments) **REQUIREMENTS** You should have: - Strong professional experience building backend systems in Node.js - Solid experience with React and TypeScript - Experience building REST APIs and working with distributed systems - Good understanding of frontend architecture and modern web standards - Experience working in cloud-native environments (AWS) - Experience making high-impact architectural decisions, ideally in a senior or lead capacity - Fluent in English It's a plus if you also have: - Experience with Kubernetes - Experience with GCP - Experience working at a product-focused company, with an understanding of how engineering drives customer experience **Salary** The monthly salary for this position is between 53,000 SEK - 67,000 SEK. Factors which may affect pay within this range may include skills, education, experience, and other qualifications. **OUR HIRING PROCESS** We are committed to ensuring a recruitment process that is fair, objective, consistent, and inclusive. Our approach includes structured, competency-based interviews designed to evaluate your skills, experience, and qualifications relevant to the role. At times, we may include a data-driven assessment to enhance our hiring success and identify candidates likely to excel. We believe in a two-way process and encourage you to ask questions throughout the journey. If this role isn't what you're looking for, please explore the other opportunities listed on our career page: https://www.sinch.com/careers/. No matter who you are, we hope you find an exciting path forward - hopefully with us!