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 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 VAS