Senior Software Engineer (C# & .Net)

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 Job

As a Senior Software Engineer, you will develop and maintain the core backend systems powering the OpenTable for Restaurants platform, directly impacting real-time reservation availability and data synchronization across global surfaces. You will lead high-scale product development and technical infrastructure upgrades, from enabling advanced dining configurations to optimizing multi-data-center microservices. Working within a highly collaborative team environment, you will drive modern development practices such as continuous delivery, trunk-based development, and pair programming. In this role, your technical contributions will ensure the absolute reliability, scale, and uptime of mission-critical systems that power thousands of frontline restaurant experiences.

Responsibilities

• Design, implement, and maintain high-scale backend systems to compute real-time table availability and reservation workflows.
• Drive product features and technical infrastructure upgrades from early planning phases all the way to production deployment.
• Build and optimize microservices architectures to support multi-data-center scalability and real-time data synchronization.
• Collaborate closely with team members through architectural design debates, thorough code reviews, and pair programming.
• Uphold system reliability and uptime standards by embedding rigorous automated testing into the development lifecycle.
• Adopt and leverage emerging AI technologies to enhance workflows while taking full responsibility for verifying output accuracy.

Minimum Qualifications

• 5 or more years of full-time professional software development experience working within a team environment.
• Proficiency in C# along with expertise in object-oriented programming and common design patterns.
• Extensive professional experience working with microservices, multithreading, and databases (SQL or NoSQL).
• Demonstrated ability to write readable, maintainable code covered by robust automated tests.
• Strong communication skills.

Preferred Qualifications

• Experience with event-driven architecture, especially Apache Kafka.
• Familiarity with domain-driven design 
• Familiarity with modern caching strategies using tools like Redis or Memcached.
• Experience with MongoDB.
• Experience with Docker and Kubernetes.
• Background in reservation, booking, marketplace, or other transaction-heavy platforms.

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
• 20 days of paid time off
• Private health and dental insurance
• Life and Disability insurance

The best connections happen face-to-face, whether you’re sitting down to dinner or having coffee with a coworker. That’s why OpenTable has adopted a hybrid workplace model. This role aligns with that approach, with an expectation of coming into the office two days a week—giving employees the best of both worlds: in-person collaboration and flexibility.

We offer a competitive base salary and benefits including: health benefits; flexible spending account; retirement benefits; life insurance; paid time off (including PTO, paid sick leave, medical leave, bereavement leave, floating holidays and paid holidays); and parental leave benefits. This role is eligible to be considered for an annual bonus and equity grant.

Work Environment & Flexibility

At OpenTable, we pride ourselves on fostering a global and dynamic work environment. As a team member with us, you will benefit from a schedule tailored to accommodate a global workforce operating across multiple time zones. While the majority of your responsibilities may align with conventional business hours, there will be instances where you are expected to manage communications - via calls, Slack messages, or emails - outside of regular working hours to effectively collaborate with international colleagues, respond to restaurant partners, and/or address urgent matters. OpenTable will always abide by and consider local laws and regulations.

Inclusion

We’re committed to creating a workplace where everyone feels they belong and can thrive. We know the best ideas come when we bring different voices to the table, so we're building a team as dynamic as the diners and restaurants we serve—and fostering a culture where everyone feels welcome to be themselves.

If you need accommodations during the application or interview process, or on the job, we’re here to support you. Please reach out to your recruiter to request any accommodations.