Senior Backend Engineer

About Us Ready for a challenge and adventure? At XYZ Reality, we are a well-established, award-winning Series-A startup accelerating toward our next funding round. Our mission is to expand our platform, enhancing features, performance, and scalability while revolutionizing the construction industry. We are a multi-disciplinary, fast-paced company working across diverse domains, including cloud development, electronics, embedded software/hardware, mechanical design/manufacturing, AI & computer vision, and data science—all powering our BIM Platform. To drive this mission forward, we are seeking a Backend Engineer with strong Node.js experience to support the development of our growing platform features and APIs. In this role, you will build high-performance, scalable backend services and work closely with our API development, client applications, and data pipeline teams to deliver robust, efficient, and reliable solutions. Our office is in central London, just a short walk from Angel Station. Responsibilities · Design, develop, and maintain scalable backend services using Node.js. · Write efficient SQL queries and optimize database performance. · Build and maintain RESTful APIs with best practices for scalability and performance. · Debug and maintain the existing API codebase. · Develop and execute unit tests and integration tests to ensure software reliability. · Conduct performance profiling and stress testing to optimize system responsiveness. · Maintain clear, structured documentation for backend systems and codebases. · Collaborate closely with cross-functional teams, including client applications and data pipeline teams. · Stay adaptable, learning new technologies and contributing to various technical areas as needed. Required Skills & Experience · Bachelor’s degree in computer science or a related field. · Strong Node.js programming skills with experience in backend development. · Solid experience with relational databases, particularly PostgreSQL. · Expertise in designing and developing scalable RESTful APIs. · Strong debugging, troubleshooting, and performance optimization skills. · Proficiency with Git, including active participation in code reviews. · Excellent communication skills in both written and spoken English. Preferred Qualifications · Experience with Java and Java frameworks (to support legacy migration to Node.js). · Familiarity with CI/CD pipelines, such as GitHub Actions. · Knowledge of GraphQL or other API design methodologies beyond REST. · Experience with Docker and Kubernetes for container orchestration. · Experience in Test-Driven Development (TDD) and software design patterns. What We Offer · A research-driven, innovative environment with opportunities to experiment and grow. · A collaborative and supportive team culture that values continuous learning and knowledge sharing. · Exposure to cutting-edge technologies in cloud development and high-performance scalable architectures. · If you're passionate about solving complex backend challenges and want to be part of an ambitious, fast-growing start-up, apply now! 🚀