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Senior Backend Ads Engineer

Canada, Toronto · Job Posted February 21, 2026
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Job Description

As a Senior Backend Engineer on the HTS Media team, you will be a core contributor to the engine that powers our entire advertising platform. You will be responsible for designing, building, and scaling the high-throughput, low-latency services that handle ad requests, run auctions, and serve millions of relevant offers to travelers in real-time. This is a mission-critical role where your work will directly impact platform performance, advertiser success, and Hopper’s bottom line. You will tackle complex challenges inherent to the ad tech space, from optimizing our real-time bidding (RTB) logic to ensuring millisecond response times under heavy load. You will serve as a technical leader, mentoring other engineers, driving architectural decisions, and setting the standard for high-quality, scalable code. If you are passionate about building distributed systems that operate at a massive scale, this is the role for you.

Job Responsibility

  • Build the Core Engine: Design, develop, and deploy high-performance microservices for ad serving, targeting, and bidding
  • Optimize for Scale and Speed: Obsess over system performance, identifying and eliminating bottlenecks to ensure our services meet stringent low-latency requirements
  • Ensure High Availability: Build resilient, fault-tolerant systems and implement robust monitoring to maintain rock-solid reliability
  • Drive Technical Excellence: Lead architectural discussions, conduct code reviews, and champion best practices in software development
  • Collaborate for Impact: Partner closely with product managers, data engineers, and the rest of the engineering team to ship cohesive, high-impact features
  • Mentor and Lead: Provide technical guidance and mentorship to other engineers on the team, helping to level up the entire organization

Requirements

  • 5+ years of professional software development experience, with a focus on building distributed, backend systems
  • Direct experience in ad tech or retail media is required
  • This includes familiarity with concepts like ad serving, real-time bidding, and ad campaign management
  • Proven track record of designing and operating high-throughput, low-latency services in a cloud environment
  • Strong experience with high-performance databases and caching systems
  • Deep understanding of system design, data structures, and algorithms
  • A strong sense of ownership and the ability to thrive in a fast-paced, entrepreneurial environment where you can make a significant impact

What we offer

  • Well-funded and proven startup with large ambitions, competitive salary and upsides of pre-IPO equity packages
  • Hopper covers 100% of the premiums for group insurance plan
  • Hopper offers life, short term and long term disability coverage
  • HSA that covers eligible medical and dental expenses
  • All employees and dependents have access to Dialogue’s telemedicine services, anytime, anywhere
  • All employees have access to an RRSP plan with automatic pre-tax withdrawals per pay
  • Please ask us about our very generous parental leave, much above industry standards!
  • Unlimited PTO
  • Carrot Cash travel stipend
  • Access to co-working space on demand through FlexDesk AND Work-from-home stipend
  • Entrepreneurial culture where pushing limits and taking risks is everyday business
  • Open communication with management and company leadership
  • Small, dynamic teams = massive impact

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