Senior Engineer (C# backend development)

Senior Engineer (Specialising in C# Backend Development) Role: Full time permanent Location: Melbourne in-office, hybrid 2x/week in office position. About OpenTable With millions of diners, 60,000+ restaurant partners and 25+ years of experience, OpenTable, part of Booking Holdings, Inc. (NASDAQ: BKNG), is an industry leader with a passion for helping restaurants thrive. Our world-class technology empowers restaurants to focus on what matters most – their team, their guests, and their bottom line – while enabling diners to discover and book the perfect restaurant for every occasion. Every employee at OpenTable has a tangible impact on what we do and how we do it. You’ll also be part of a global team and its portfolio of metasearch brands. Hospitality is all about taking care of others, and it defines our culture. About the Role You’ll be joining the growing Private Dining Team in Australia and help elevate OpenTable’s newest line of business. The team is building the next generation event management for our top restaurant groups. We're deeply involved from concept, prototyping, implementation, delivery, to customer validation. We believe in empowering individuals to do phenomenal work. Responsibilities Architect, build, and maintain scalable C# .NET backend services and RESTful APIs for OpenTable’s global Private Dining platform. Drive end-to-end project execution from initial technical planning and architectural design through to production deployment. Collaborate with cross-functional software engineers, product managers, and designers across international offices to deliver impactful enterprise features. Champion engineering excellence and continuous integration by applying Test-Driven Development (TDD), SOLID principles, and clean code practices. Troubleshoot, debug, and optimize distributed microservices to ensure system reliability, performance, and rapid incident response. Mentor team members, share technical knowledge, and foster an inclusive, highly collaborative learning environment. Minimum Qualifications 5+ years of software engineering experience with C# and .NET Core. Proven experience building and scaling high-volume RESTful APIs and distributed, event-driven microservices. Demonstrated proficiency in object-oriented design, design patterns, data structures, and core software design principles (e.g., SOLID, TDD, Dependency Injection). Hands-on experience with relational or NoSQL database technologies (e.g., PostgreSQL, MongoDB, or Cassandra) and containerization tools (e.g., Docker, Kubernetes). Experience leading technical planning and driving features through full-lifecycle CI/CD pipelines into production. Preferred Qualifications Familiarity with Java backend technologies or full-stack software development. Experience with AI Spec-Driven Development Experience with Python, or big data processing frameworks (e.g., Databricks, Apache Spark, Apache Airflow). Experience monitoring system performance, triaging operational incidents, and utilizing telemetry or log management tools. Background collaborating across international time zones with distributed engineering and product teams. Experience with continuous integration tools such as TeamCity or modern cloud delivery pipelines. Benefits and Perks: Work from (almost) anywhere for up to 20 days per year Focus on mental health and well-being: Company-paid therapy sessions through SpringHealth Company-paid subscription to Headspace Annual company-wide week off a year - the whole team fully recharges (and returns without a pile-up of work!) Paid parental leave Generous paid vacation + time off for your birthday Paid volunteer time Focus on your career growth: Development Dollars Leadership development Access to thousands of on-demand e-learnings Travel Discounts Employee Resource Groups Annual health and wellness reimbursement Monthly social events Free lunch 2 days per week Work Environment & Flexibility At OpenTable, we pride ourselves on fostering a global and dy…