We are looking for a Platform Architect to lead the modernization and evolution of a global, white-label, self-serve advertising platform used by international media companies and publishers. In this role, you will define the platform’s next-generation, multi-tenant architecture, ensuring high performance, strict data isolation, and seamless scalability across a complex ecosystem of integrations, from real-time billing and reporting to campaign orchestration and creative management. As the technical authority for the platform, you will guide architectural direction while enabling engineering teams to deliver secure, reliable, cloud-native services on AWS. You will work in a high-load AdTech environment, designing the foundational infrastructure that powers automated provisioning, cross-client configuration management, and multi-region resiliency. This role includes modernizing legacy components into event-driven microservices, establishing CI/CD governance, shaping DevOps and FinOps practices, and enabling future integrations with advanced AI and machine learning capabilities.  This is a unique opportunity to influence a platform that plays a significant role in the global digital advertising industry and to collaborate with an international team that is shaping its technical future. CUSTOMEROur Customer is a Swedish AdTech company that transforms the way publishers and advertisers interact. They provide state-of-the-art self-serve advertising platforms that enable seamless, direct transactions between advertisers and some of the world’s largest publishers. Their mission is to make advertising more accessible, automated, and efficient through innovative technology. Together, we serve globally recognized clients such as TripAdvisor, Bloomberg, The Washington Post, Opera, Dow Jones, etc. PROJECTWe are building a white-label, self-serve advertising platform widely used by international media companies and publishers. It integrates with ad servers, CRMs, and payment systems, providing a unified interface for managing advertising campaigns. This system handles high volumes of real-time data and transactions, requiring extreme performance and stability. RESPONSIBILITIES Design and implement a secure, multi-tenant microservices architecture on AWS, including defining the tenancy model  Ensure strict data isolation, scalability, resilience, automated recovery (RTO/RPO), multi-region failover, and comprehensive DR/BCP testing  Own and manage the end-to-end CI/CD pipeline, creating a unified deployment framework that supports a single-core product across all clients through configuration-driven provisioning  Drive automation for testing, deployment, and documentation generation  Define, provision, and manage all cloud infrastructure using Terraform  Lead the development of platform acceleration scripts and standardized service templates to streamline engineering workflows  Enforce technical standards around security, SLAs, and architecture by chairing a technical review board (TRB)  Implement FinOps practices, including AWS cost allocation tagging, showback/chargeback dashboards, and automated cost optimization mechanisms  Architect and oversee the centralized data lake/warehouse to unify campaign, creative, and user data across the platform  Collaborate with the Product, AI, and Data teams to translate business requirements into scalable, future-proof technical designs  REQUIREMENTS Proven track record as a Software Architect or Platform Architect, with experience in a leadership or strategic technical role   At least 7 years of hands-on experience working with core AWS services  Solid expertise in container orchestration technologies and serverless architectures  Deep understanding of AWS networking fundamentals, including VPC  Experience with Java and Node.js  Expert-level proficiency in Terraform or CloudFormation for managing complex, immutable infrastructure  Proven track record of designing, deploying, and scaling high-traffic, multi-tenant, distributed SaaS platforms  Expertise in defining, measuring, and reporting on SLAs, SLIs, and SLOs, including setting and managing error budgets  Hands-on experience with monitoring and observability tools such as Datadog, Prometheus, or AWS CloudWatch  At least an Upper-Intermediate level of English   WILL BE A PLUS Possession of AWS Certified Solutions Architect Professional or DevOps Professional certifications  Experience with Backstage (IDP) and Kubernetes Operator development  Deep knowledge of AdTech data pipeline security and high-volume data ingestion  PERSONAL PROFILE Strong leadership and architectural vision   Ability to work in high-load, high-availability environments   Proven ability to collaborate across cross-functional teams   Strategic thinking combined with hands-on technical expertise