Full Stack Developer

Job Description:

Were looking for a hands-on Full-Stack Developer to build and scale the internal tools and AI-powered applications that support Merkles delivery. Youll 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

• 3 years in software engineering (full-stack AI or platform development)
• Experience with modern JavaScript/TypeScript stacks (React ) 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

• 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)

• 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)

• Buildproducts not projects
• Direct impact on how Merkle delivers at scale
• Work at the intersection ofAI engineering and platform thinking
• High ownership and room to shape solutions

• A dynamic international work environment with colleagues from around the globe.
• A challenging position at a successful company in a growing market.
• A fun and inclusive culture-thinkfoosball table tennis themed events and team parties.
• 3 extra days off (yes at Merkle we take your well-being very seriously) - in addition to 25 annual vacation days there are 3 Well-being Days.
• 2 Social Impact Days - you can volunteer for a charity of your choice.
• Extensive learning and development opportunities including a wide range of personal and online training.
• A hybrid work model with 2-3 days in the office and the rest working from home.
• A competitive salary and excellent secondary benefits.

Company Description

Merkle a dentsu company powers the experience economy. For over 35 years Merkle has placed people at the heart of its digital business transformation approach. As the only integrated experience consultancy with a heritage in data science and business performance Merkle delivers holistic end-to-end experiences that drive growth engagement and loyalty. Recognized as a Leader by top industry analysts in categories such as digital transformation commerce experience design engineering technology integration digital marketing data science CRM loyalty and customer data management Merkle operates in 30 countries with over 16000 the Netherlands more than 150 Merkle employees work with clients like ASML Albert Heijn HEMA Carglass and Signify. Merkle Netherlands is a strategic partner of Google Adobe Salesforce and Selligent. For more information visit .

Diversity and Inclusion
At dentsu we believe in the power of diversity. Wewelcome all applications regardless of age disability gender reassignment marital or civil partner status pregnancy or maternity race color nationality ethnic or national origin religion or belief sex or sexual orientation.

Contact:
We look forward to receiving your application for any questions please contact the TA in charge of this role: David Ryall Senior Talent Acquisition Partner EMEA NE. #LI-MERKLE #LI-Hybrid #LI-DR2

Location:

Brand:

Time Type:

Contract Type: