> Markdown version of [/jobs/ext/3132579-full-stack-developer](https://www.wearedevelopers.com/jobs/ext/3132579-full-stack-developer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Full Stack Developer - **Company:** Dentsu Creative - **Location:** Rotterdam, Netherlands (Remote available) - **Experience:** Experienced - **Contract:** Temporary contract - **Skills:** JavaScript (Programming Language), Artificial Intelligence, Application Layers, Business Logic, Software Applications, User Authentication, Databases, Software Debugging, Identity and Access Management, PostgreSQL, Node.Js, OAuth, Next.js, Salesforce.Com, Security Assertion Markup Language (SAML), Single Sign-On, Software Engineering, Data Streaming, TypeScript, Okta, ReactJS, Large Language Models, Firebase, Backend, Adobe, Webpack, Real Time Data, Front End Software Development, Api Management, Serverless Computing, Docker - **Published:** September 29, 2026 - **Apply:** https://dentsuaegis.wd3.myworkdayjobs.com/DAN_GLOBAL/job/Rotterdam/Full-Stack-Developer_R1124295 ## About the Role * 3+ years in software engineering (full-stack, AI, or platform development) * Experience with modern JavaScript/TypeScript stacks (React, Next.js, Node.js), frontend and backend * Experience with Docker and self-hosted infrastructure, not just managed cloud services * Knowledge and experience with multi-tenant application patterns * Solid problem-solving skills and strong ownership mindset Strong advantage: * Familiarity with backend-as-a-service platforms (e.g., Supabase, Firebase) for auth, database, storage, and serverless functions * Exposure to alternative JS/TS runtimes (e.g., Deno, Bun) Nice to Have * Hands-on experience with LLM APIs (e.g., OpenAI, Anthropic) * Familiarity with SSE streaming or real-time data patterns * Familiarity with MarTech platforms (e.g., Adobe, Salesforce, CDPs) * Experience with authentication systems (e.g., OAuth2, SAML, SSO) ## Description We're looking for a hands-on Full-Stack Developer to build and scale the internal tools and AI-powered applications that support Merkle's delivery. You'll own the application layer end-to-end - from the backend up through the frontend - covering backend logic, infrastructure, authentication, deployments, and day-to-day stability., * Own and maintain the full application stack across our internal tools: backend, database, auth, and frontend * Design and implement authentication and access control (e.g., SSO with SAML or Okta, multi-tenant data isolation, role-based access) * Write and maintain database schemas, migrations, and access policies (e.g., PostgreSQL with RLS and RPC functions) * Build and manage serverless backend functions (e.g., for application logic and API integrations) * Set up and maintain CI/CD pipelines and manage deployments across environments (e.g., DEV, UAT, PROD) * Build and maintain modern frontends (e.g., React, Vite, TypeScript) * Debug and resolve issues across the stack (e.g., build errors, networking, misconfigured services, 5xx errors) * Collaborate with the AI/LLM side of the team to integrate model outputs cleanly into the application * Take ownership from idea * build * run * improve ## Related Videos - [3x Performance: A Humbling Journey](https://www.wearedevelopers.com/videos/100165-3x-performance-a-humbling-journey) - [Keeping applications secure by evolving OAuth 2.0 and OpenID Connect](https://www.wearedevelopers.com/videos/100152-keeping-applications-secure-by-evolving-oauth-2-0-and-openid-connect) - [Build and Deploy a Fullstack App with Open Source Tooling](https://www.wearedevelopers.com/videos/775-build-and-deploy-a-fullstack-app-with-open-source-tooling) - [NoCode LiveCode: Leveraging AI Tools to Craft Fully Functional Apps!](https://www.wearedevelopers.com/videos/1169-nocode-livecode-leveraging-ai-tools-to-craft-fully-functional-apps) - [Meet Your New BFF: Backend to Frontend without the Duct Tape](https://www.wearedevelopers.com/videos/682-meet-your-new-bff-backend-to-frontend-without-the-duct-tape) - [Delay the AI Overlords: How OAuth and OpenFGA Can Keep Your AI Agents from Going Rogue](https://www.wearedevelopers.com/videos/1637-delay-the-ai-overlords-how-oauth-and-openfga-can-keep-your-ai-agents-from-going-rogue) ## Related Articles - [Dev Digest 120 - Apple and peers](https://www.wearedevelopers.com/magazine/455-dev-digest-120-apple-and-peers) - [Dev Digest 121 - AI goes offline](https://www.wearedevelopers.com/magazine/456-dev-digest-121-ai-goes-offline) - [Dev Digest 131 - AI'm not sure about OSS](https://www.wearedevelopers.com/magazine/472-dev-digest-131-ai-m-not-sure-about-oss) - [Software Developer Salary in The Netherlands [2023]](https://www.wearedevelopers.com/magazine/217-software-developer-salary-in-the-netherlands-2023) - [What’s the Difference Between Frontend and Backend Development?](https://www.wearedevelopers.com/magazine/240-what-s-the-difference-between-frontend-and-backend-development) - [Fullstack developer salary in Germany [2023]](https://www.wearedevelopers.com/magazine/197-fullstack-developer-salary-in-germany-2023)