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Lead Back-End Developer

Sweden, Malmö · Job Posted January 30, 2026
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Job Description

We are at a pivotal moment. You aren't joining to maintain a legacy system; you are joining to re-architect the future of the DanAds platform. DanAds is shifting to a "Platform-First" architecture. We are moving away from monolithic, client-specific codebases to a standardized, API-driven ecosystem. As the Platform Lead Back-End Developer, your mission is to design and build the high-performance, reusable Microservices (Identity, Booking, Reporting, AI) that power our entire product suite. You will act as the "Technical Guardian" of the backend, ensuring that every service we ship is multi-tenant, serverless, and strictly decoupled from the frontend.

Job Responsibility

  • Enforce the Contract: You are the gatekeeper of the API. You will define and maintain strict OpenAPI specifications
  • Serverless-First: Drive our FinOps strategy by architecting solutions on AWS Serverless (Lambda, API Gateway, DynamoDB, EventBridge) to ensure a "Scale-to-Zero" cost model
  • The Reusability Filter: You will ruthlessly reject "snowflake" logic. If a Product Team asks for a specific feature, your job is to abstract it into a generic capability that serves 10+ clients
  • Data Standards (AdCP): Enforce the Ad Context Protocol (AdCP) across all data models
  • Security & Tenancy: implement strict Logical Isolation patterns
  • Lead by Code: You are a hands-on leader. You write the "Golden Path" templates and libraries that other developers use
  • Review & Refine: Conduct rigorous code reviews to ensure adherence to our NFRs (Non-Functional Requirements) regarding latency (<200ms), availability (99.99%), and observability
  • Bridge the Gap: Translate the CPO's commercial requirements into technical specs

Requirements

  • Senior Engineering Experience: 7+ years in backend development, with a deep focus on API design and microservices
  • AWS Native: Mastery of the AWS ecosystem, specifically Lambda, DynamoDB, EventBridge, and CloudFormation/Terraform
  • API Design Pro: Extensive experience designing RESTful/GraphQL APIs and treating them as products (Versioning, Documentation, Backward Compatibility)
  • The "Platform Mindset": You understand the difference between building a Project (for one client) and a Platform (for many)
  • AdTech Experience (Bonus): Familiarity with concepts like VAST, OpenRTB, and Campaign workflows is a major plus

Nice to have

AdTech Experience (Bonus): Familiarity with concepts like VAST, OpenRTB, and Campaign workflows is a major plus

What we offer

  • Competitive salary
  • Wellness grant and occupational pension
  • A fun and entrepreneurial environment
  • Career growth opportunities
  • Industry leading clients such as Paramount Advertising, Yahoo, Nine Group, Roku and many more

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