🇫🇷 Interface Tasklist personnalisée pour Camunda 8 – Complete Guide

Creating a Custom Tasklist for Camunda 8 – Complete Guide (Architecture, APIs, and Best Practices)

Camunda 8 provides a Tasklist by default, but in many real-world projects (banking, insurance, ERP, SaaS), companies need a fully customized Tasklist interface.

With Camunda 8, this approach is not a workaround, but a recommended and modern architecture that is perfectly aligned with the cloud and microservices.

This guide explains:

✔ Why create a custom
✔ Tasklist The Camunda 8 architecture for Human Tasks
✔ The APIs used
✔ The life cycle of a human
✔ task Form management
✔ Best practices and mistakes to avoid

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⭐ 1. Why create a custom Tasklist with Camunda 8?

You should create a Custom Tasklist UI if you need:

✔ Branding (logo, colors, corporate UX)
✔ Integration into an existing portal (CRM, ERP, HR, Banking)
✔ Dashboards by role (agent, manager, supervisor)
✔ Modern UI (React / Angular / Vue)
✔ Mobile experience / responsive
✔ SSO (Keycloak, Azure AD, Okta)
✔ Advanced UI-side business validation

👉 With Camunda 8, external interfaces are the norm, not the exception.

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⭐ 2. Global architecture of a custom tasklist

Typical architecture:

1. The user logs in to your custom UI

2. Authentication via SSO / OAuth2

3. UI calls Camunda 8 Tasklist APIs

4. Human tasks are displayed

5. The user claims and completes the task

6. Camunda 8 (Zeebe) automatically resumes the workflow

⚠️ Important:
Camunda 8 is 100% asynchronous, and no business logic is executed in the engine.

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⭐ 3. Difference with the Camunda 7 Tasklist

Element	Camunda 7	Camunda 8
Tasklist	Built-in webapp	Separate service
Customization	Limited	Full external UI
Engine	Monolithic	Distributed (Zeebe)
Execution	Sync + Async	Async only
Recommended UI	Tasklist provided	Custom tasklist

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⭐ 4. APIs used for a custom Tasklist

Your UI communicates with Camunda 8 via the Tasklist APIs (REST or GraphQL depending on the setup).

Main actions:

✔ Retrieve tasks
✔ Filter by assignee or candidateGroups
✔ Claim / unclaim a task
✔ Load variables
✔ Complete a task

Example (conceptual) – task recovery:

query {
  tasks {
    id
    name
    assignee
    candidateGroups
    priority
    dueDate
  }
}

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⭐ Article 5. Human Task Lifecycle

1. The BPMN User Task is achieved

2. The task is created by Zeebe

3. It appears in the custom Tasklist

4. User claim (optional)

5. The user completes it with data

6. The workflow continues automatically

✔ Asynchronous
✔ Event-driven
✔ Scalable

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⭐ 6. Assignment and security management

Recommended assignment

✔ candidateGroups (best practice)
✔ only for simple casesassignee

Security

• IAM (Keycloak, Azure AD, Okta...)

• Mapping IAM Roles → Camunda Groups

• Checking rights on the UI and API side

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⭐ 7. Forms in a Custom Tasklist

In a custom UI:

❌ You don't use Camunda Forms
✅ You create your own UI forms

Approach:

1. Load task variables

2. Generate React / Angular / Vue form

3. Validate Fields

4. Send variables on completion

Avantages :
✔ UX libre
✔ Validation avancée
✔ Logique conditionnelle
✔ UI moderne

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⭐ 8. Exemple réel – Portail d’approbation de prêt

Scenario:

1. Agent logs in

2. He sees the tasks of the group loan_officers

3. It opens a task

4. The form displays amount, risk, customer

5. It approves or rejects

6. The process continues automatically

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⭐ 9. Typical technical stack

✔ Frontend: React / Angular / View
✔ Authentication: OAuth2 / SSO
✔ APIs: Camunda 8 Tasklist API
✔ Backend-for-Frontend (optional)
✔ Deployment: Kubernetes / Cloud

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⭐ Art. 10. Best practices

✔ Use candidateGroups
✔ Keep UI stateless
✔ Manage pagination and filters
✔ Validate UI side and backend
✔ Log completions
✔ Manage errors & retries API
✔ Monitor via Operate
✔ Separate UI, orchestration, and business logic

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⚠️ Common mistakes to avoid

❌ Change the default Camunda 8
❌ Tasklist Expect synchronous
❌ behavior Hardcode users
❌ Put business logic in the UI
❌ Neglect security
❌ Think of Camunda 8 as Camunda 7

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🎉 Conclusion

Creating a custom Tasklist for Camunda 8 allows you to:

✔ Modern, professional
✔ UX Seamless integration with your portals
✔ Enterprise
✔ Security Better Scalability
✔ Clear separation of responsibilities

👉 Camunda 8 orchestrates processes
👉 Your UI manages the user experience

This is the modern, scalable and future-proof approach to Human Tasks.

💼 Support professionnel disponible

Si vous rencontrez des problèmes sur des projets réels liés au développement backend d’entreprise ou à l’automatisation des workflows, je propose des services de conseil payants, de débogage en production, de support projet et de formations ciblées.

Les technologies couvertes incluent Java, Spring Boot, PL/SQL, Azure, ainsi que l’automatisation des workflows (jBPM, Camunda BPM, RHPAM).

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