Freelance Platform Engineer

Mediahuis NL B.V.; Antwerpen; Hybrid; EUR 60,000 - 100,000; Part time

Job summary

Mediahuis NL B.V. is seeking a freelance Platform Engineer to design, build and operate an internal AI platform that securely connects models, tools, and workflows.

The role emphasizes identity, governance and automation, with a focus on Go-based distributed services and MCP integrations. You’ll collaborate with an autonomous team, contribute to architectural decisions, and ensure scalable, auditable deployments across the organization.

Qualifications

• Requires medior or senior backend engineer with strong Go and distributed systems experience.
• Experience building secure, scalable AI platforms and integrations with LLM providers.
• Familiarity with authentication, token management and encryption technologies.
• Comfortable in a small, autonomous engineering team and documenting architectural decisions.

Responsibilities

• Develop and maintain the AI platform, focusing on distributed services and event-driven architecture.
• Integrate language models and external tools via APIs and MCP.
• Implement identity, governance, secrets management and audit logging.

Skills

Backend development

Distributed systems

Go (Golang)

Security engineering

OAuth2/OIDC

Linux containers

Tools

Go (Golang)

MCP

OAuth2

OIDC

Job description

Mediahuis is looking for a Freelance Platform Engineer to help build and operate our internal AI platform. You’ll develop secure, scalable services that connect AI models, tools and workflows across our organization, with a strong focus on identity, governance and automation.

We believe you could be the perfect fit.

Your impact.

As a Platform Engineer, you’ll help shape the technological foundation that enables Mediahuis teams to use AI securely and efficiently. You’ll build distributed services, integrate language models and external tools, and ensure that identity, security and governance are embedded throughout the platform. Your work will directly contribute to making AI accessible, reliable and scalable across Mediahuis.

You’ve already started daydreaming? Keep reading - this opportunity is even better than you imagined!

Your role includes.

• Developing and maintaining our AI platform, primarily using Go, with a focus on distributed services, event-driven architecture and message-based communication.

• Building secure AI integrations, connecting LLM providers, self-hosted models and external tools through APIs and the Model Context Protocol (MCP).

• Implementing identity and governance mechanisms, including OAuth2, OIDC, secrets management, audit logging and policy-based access controls.

• Enabling self-service capabilities, allowing internal teams to connect their own tools, workflows and AI agents without requiring direct intervention from the platform team.

• Developing and optimizing model infrastructure, integrating multiple AI providers and self-hosted models while considering performance, cost and data sensitivity.

• Managing deployments and platform operations, including Linux containers, configuration management, release processes, monitoring and rollback procedures.

• Contributing to architecture and technical decisions, documenting designs and decisions through Architecture Decision Records (ADRs) and ensuring consistent engineering standards.

• Collaborating with internal stakeholders, integrating the platform with workflow automation, desktop assistants and other business applications.

You’ll work in a hybrid setup, with at least two days per week at our Antwerp office, collaborating closely with colleagues across Mediahuis.

What makes you a great fit?

What's on your CV, is important but is by no means the only thing we attach importance to. You're a medior or senior engineer with solid experience in backend development and distributed systems, preferably using Go (Golang). You understand how event-driven architectures and message-based services operate in production and have experience with authentication and security technologies such as OAuth2, OIDC, token management and encryption. You're familiar with Linux environments, containers and modern deployment practices. Ideally, you've already worked with LLM APIs, tool calling, streaming or MCP integrations. You enjoy translating technical designs into reliable production solutions, documenting architectural decisions and taking ownership of your work from design to delivery. You're analytical, structured and comfortable working in a small, autonomous engineering team. You communicate effectively in both Dutch and English.

Experience with GPU-based model serving, workflow automation, observability, audit pipelines or platform engineering is considered an additional asset.

What's about to become your second home?

You’ll join TPS, the international technology organization of Mediahuis, and become part of our AI Solutions Platform domain. Within a small, specialized engineering team, you'll help develop and operate the internal AI platform that enables teams across Mediahuis to securely access language models, tools and AI agents. The team works according to clear architectural principles, with a strong emphasis on documentation, ownership, automation and operational excellence. You'll have the opportunity to contribute to a technically challenging platform that plays an important role in Mediahuis' broader AI ambitions.

It's up to you now!

Will you take your chance, or keep daydreaming? If the Platform Engineer – AI Platform position sounds like the perfect fit, don't hesitate -

Not a perfect match but eager to grow into this role? Let's talk!