Senior Backend Engineer( AdTech)

• Take end-to-end ownership of the Vast Gateway service
• Maintain, develop, and extend platform functionality
• Design and implement scalable Back-end solutions for high-load environments
• Support onboarding of new clients, including integrations, monitoring setup, troubleshooting, and optimization
• Build custom features and integrations based on Customer requirements
• Monitor system performance and proactively identify optimization opportunities
• Ensure service reliability, availability, and low-latency performance
• Participate in release planning, deployments, and production support activities
• Improve observability through monitoring, alerting, and operational tooling
• Collaborate with Product and engineering stakeholders to evolve platform architecture

• 5+ years of commercial Back-end development experience
• Extensive hands-on experience with Cloudflare Workers
• Strong expertise in server-side JavaScript or other Back-end technologies
• Commercial experience in AdTech environments
• Proven experience supporting production systems in high-load environments
• Strong understanding of debugging, monitoring, hotfixing, and zero-downtime deployments
• Solid knowledge of HTTP protocols, web fundamentals, HTML, and tracking pixels
• Experience building scalable and highly available distributed systems
• Strong analytical and problem-solving skills
• Ability to independently own services and drive technical improvements
• Upper-Intermediate English level or higher
• Strong communication and collaboration skills in distributed teams

WILL BE A PLUS

• Experience with VAST protocol
• Experience with VPAID creatives
• Background in video advertising technologies
• Experience with high-load distributed systems
• Performance optimization expertise
• Experience with edge-computing architectures

PERSONAL PROFILE

• Analytical and data-driven mindset
• Strong ownership mentality
• Proactive approach to identifying issues and improvement opportunities
• Comfortable working autonomously in a high-responsibility role
• Detail-oriented with a focus on reliability and quality
• Strong troubleshooting and decision-making skills