AgileEngine is an Inc. 5000 company that creates award-winning software for Fortune 500 brands and trailblazing startups across 17+ industries. We rank among the leaders in areas like application development and AI/ML, and our people-first culture has earned us multiple Best Place to Work awards. WHY JOIN US If you're looking for a place to grow, make an impact, and work with people who care, we'd love to meet you! ABOUT THE ROLE We are looking for a Senior Backend Engineer to architect and build the core systems of a next-generation advertising platform that embeds products directly into visual experiences. You will design high-throughput, low-latency services for campaign delivery, targeting, attribution, and partner integrations using Python, Django, Kubernetes, and AWS. This is an early-stage initiative where senior engineers define the technical direction and system architecture from the ground up. WHAT YOU WILL DO - Architect, build, and evolve core systems for the Ads platform; - Design APIs and services supporting campaign management, targeting, delivery, attribution, and reporting; - Build and optimize high-throughput, low-latency systems processing large volumes of events and data; - Own critical systems end-to-end, including design, implementation, deployment, monitoring, and ongoing improvements; - Drive architectural decisions and establish patterns that support scalability, reliability, and developer productivity; - Collaborate closely with product, data, and partner teams to translate business requirements into robust technical solutions; - Provide technical leadership through design reviews, system discussions, and mentoring other engineers; - Contribute to engineering best practices, documentation, and long-term platform vision; - Participate in hiring and help grow a strong, high-performing team. MUST HAVES - 5+ years of software development experience building scalable systems using backend programming languages/frameworks (e.g. Java, .NET, Python, Node.js, etc.); - Deep understanding of computer science fundamentals, including algorithms, data structures, networking, and databases; - Proven experience designing and scaling distributed systems with a focus on performance, observability, and fault tolerance; - Strong architectural instincts and the ability to make high-leverage technical decisions that impact multiple teams and systems; - Demonstrated ability to influence and mentor senior engineers, guide teams through ambiguity, and elevate engineering practices across the board; - Exceptional ownership mindset; - Availability to work till 1pm EST (till 8 pm Kyiv time); - Excellent communication and cross-functional collaboration skills; - Comfortable operating in a fast-paced, high-autonomy, product-driven environment; - Experience with e-commerce and catalog management is preferred; - Familiarity with Python, Django, Kubernetes, PostgreSQL, and AWS is strongly preferred, but deep expertise in analogous systems and a willingness to learn are welcome; - Upper-intermediate English level. NICE TO HAVES - Strong experience with complex ETL flows and high-throughput systems is highly preferred; - Experience with AdTech (This may include experience with DSPs, SSPs, ad exchanges, affiliate programs, Prebid.js, Prebid Server, Google Ad Manager, Amazon UAM/TAM, OpenRTB, identity and addressability solutions, as well as ad operations workflows.) PERKS AND BENEFITS - Professional growth: Mentorship, TechTalks, and personalized growth roadmaps. - Competitive compensation: USD-based pay with education, fitness, and team activity budgets. - Exciting projects: Modern solutions with Fortune 500 and top product companies. - Flextime: Flexible schedule with remote and office options.