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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Backend Engineer - Adtech Id52365 - **Company:** Agileengine, Llc. - **Location:** Barcelona, Spain - **Contract:** Permanent contract - **Skills:** Java (Programming Language), .NET Framework, Amazon Web Services, Databases, Extract Transform Load (ETL), Data Structures, Distributed Systems, Django Web Framework, Fault Tolerance, Python (Programming Language), PostgreSQL, Node.Js, Software Engineering, Systems Architecture, Web Services, Backend, Kubernetes - **Published:** August 6, 2026 - **Apply:** https://www.buscojobs.com.es/senior-backend-engineer-adtech-id-52365-en-barcelona-ID-365382763 ## About the Role 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 AdTech 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 (backend programming languages/frameworks, e.G. Java , .NET , Python , Node.Js , etc.) Experience with AdTech (DSPs, SSPs, ad exchanges, affiliate programs, Prebid.Js, Prebid Server, Google Ad Manager, Amazon UAM/TAM, OpenRTB, identity and addressability solutions, and ad operations workflows) Deep understanding of computer science fundamentals (algorithms, data structures, networking, databases) Proven experience designing and scaling distributed systems focusing 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 - you drive initiatives forward, raise the bar, and deliver lasting impact Excellent communication and cross?functional collaboration skills Availability to work until 1pm EST (till 8pm Kyiv time) 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 Nice to Haves Strong experience with complex ETL flows and high?throughput systems 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 #J-*****-Ljbffr ## Description 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 AdTech 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 (backend programming languages/frameworks, e.G. Java , .NET , Python , Node.Js , etc.) Experience with AdTech (DSPs, SSPs, ad exchanges, affiliate programs, Prebid.Js, Prebid Server, Google Ad Manager, Amazon UAM/TAM, OpenRTB, identity and addressability solutions, and ad operations workflows) Deep understanding of computer science fundamentals (algorithms, data structures, networking, databases) Proven experience designing and scaling distributed systems focusing 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 - you drive initiatives forward, raise the bar, and deliver lasting impact Excellent communication and cross?functional collaboration skills Availability to work until 1pm EST (till 8pm Kyiv time) 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 Nice to Haves Strong experience with complex ETL flows and high?throughput systems 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 #J-*****-Ljbffr ## Related Videos - [Developing the Backend with Stefan Lingler, CTO at Shpock](https://www.wearedevelopers.com/videos/100360-developing-the-backend-with-stefan-lingler-cto-at-shpock) - [Stop using Node.js like in 2020! What changed and what you can do today with Node.js](https://www.wearedevelopers.com/videos/100011-stop-using-node-js-like-in-2020-what-changed-and-what-you-can-do-today-with-node-js) - [Kubernetes and Microservices with Multi-Model Databases](https://www.wearedevelopers.com/videos/382-kubernetes-and-microservices-with-multi-model-databases) - [Inside Bitpanda's Tech Stack: Scaling a European Fintech Leader - Markus Dorner](https://www.wearedevelopers.com/videos/1979-inside-bitpanda-s-tech-stack-scaling-a-european-fintech-leader-markus-dorner) - [Nest.js - TypeScript in the backend can also be clean](https://www.wearedevelopers.com/videos/1033-nest-js-typescript-in-the-backend-can-also-be-clean) - [Recruitment Reinvented: Bold strategies and the $10K signing incentive](https://www.wearedevelopers.com/videos/1068-recruitment-reinvented-bold-strategies-and-the-10k-signing-incentive) ## Related Articles - [Where To Find Software Engineering Jobs](https://www.wearedevelopers.com/magazine/396-where-to-find-software-engineering-jobs) - [Find a Developer Job: 12 Best Job Sites For Developers](https://www.wearedevelopers.com/magazine/165-find-a-developer-job-12-best-job-sites-for-developers) - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs) - [The Best Job Search Websites of 2025](https://www.wearedevelopers.com/magazine/368-the-best-job-search-websites-of-2025) - [Dev Digest 121 - AI goes offline](https://www.wearedevelopers.com/magazine/456-dev-digest-121-ai-goes-offline) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated)