How do I set up an async feedback platform for remote design reviews with role-based access and guest reviewers?

Here’s a practical way to set up an async feedback platform for remote design reviews with role-based access and guest reviewers.

1) Define the core workflow

A simple async review flow usually looks like this:

1. Designer uploads a review item
   • e.g. a Figma link, PDF, image, prototype, or screen recording
2. Reviewer group is assigned
   • internal team, stakeholders, guests, or a mix
3. Feedback is collected asynchronously
   • comments, annotations, reactions, status labels, questions
4. Designer resolves and responds
   • mark items addressed, request follow-up, close review
5. Audit and history are retained
   • who commented, when, and what changed

2) Define roles and permissions

Use role-based access control (RBAC) with a few clear roles:

Typical roles

• Admin
  • manage org settings, roles, guest policies, integrations
• Design Lead / Moderator
  • create reviews, assign reviewers, close reviews, moderate comments
• Designer
  • create and manage own review threads, respond to comments
• Internal Reviewer
  • comment, annotate, mark approvals/concerns
• Guest Reviewer
  • limited access to specific review sessions only
• Viewer
  • read-only access

Permission model

Keep permissions scoped by resource:

• Org-level
• Project-level
• Review-level
• Comment-level

Example permissions:

• review:create
• review:read
• review:comment
• review:resolve
• guest:invite
• guest:read_limited

For guests, restrict them to:

• only the reviews they’re invited to
• no access to the broader workspace
• possibly no download/export
• expiry after a set time

3) Support guest reviewers safely

Guest reviewers are common for clients, partners, and contractors.

Best practice guest setup

• Invite by email
• Require email verification or magic link
• Assign to a specific review only
• Set expiration dates
• Limit permissions to:
  • view
  • comment
  • react
  • maybe annotate
• Add optional NDA / terms acceptance
• Track audit logs for every guest action

Security controls

• Time-limited access tokens
• Re-authentication for sensitive reviews
• Watermarking on shared assets if needed
• IP/device restrictions for high-sensitivity projects
• Disable guest-to-guest visibility unless explicitly allowed

4) Choose the async feedback features

A strong design review platform usually needs:

Review content types

• images, PDFs, video walkthroughs
• prototype embeds
• URLs / Figma / Framer / Miro / Zeplin links
• versioned assets

Feedback tools

• threaded comments
• pinned comments
• annotation on image/video frames
• emoji reactions / quick approvals
• status tags like:
  • approved
  • needs changes
  • needs discussion
  • blocked
• mentions @name
• resolved/unresolved states

Workflow features

• due dates
• reminders / nudges
• review stages
• approval gates
• change requests
• version comparison

5) Build the data model

A minimal backend structure could be:

• Users
  • id, name, email, role, status
• Organizations
  • id, name
• Projects
  • id, org_id
• Reviews
  • id, project_id, title, description, status, due_date, created_by
• Assets
  • id, review_id, file_url, type, version
• Participants
  • review_id, user_id/email, role_in_review, access_expiry
• Comments
  • id, review_id, asset_id, author_id, body, parent_id, coordinates/timestamp
• Permissions / Policy
  • role, action, scope
• Audit Logs
  • actor, action, resource, timestamp, metadata

6) Design the access control architecture

A good approach is RBAC + resource scoping:

Example

• Role determines what actions are possible
• Scope determines where they apply
• Policy engine checks both

You can implement this in:

• your app logic
• a dedicated authorization service
• a policy engine like OPA, Cedar, or Casbin

Example rule

• A guest may comment only if:
  • they are invited to that specific review
  • the review is still open
  • their invitation is not expired

7) Handle asynchronous collaboration well

Async platforms fail if feedback is hard to follow.

Make it easy to review

• clear status indicators
• “unresolved comments” queue
• digest emails/slack notifications
• mention notifications
• review summaries
• activity timeline

Reduce noise

• allow comment filtering by:
  • unresolved
  • by reviewer
  • by asset version
• support “decision” comments separate from discussion
• allow moderators to merge duplicate threads

8) Integrations

Useful integrations:

• Figma/Adobe/Sketch
• Slack / Microsoft Teams
• Email notifications
• Calendar for due dates
• SSO (Google, Okta, Azure AD)
• Storage/CDN for assets
• Webhooks for downstream workflows

9) Suggested MVP stack

If you’re building this from scratch:

Frontend

• React / Next.js
• real-time optional, but async-first
• image/video annotation UI

Backend

• Node.js / NestJS, Python/FastAPI, or similar
• PostgreSQL for relational data
• Redis for queues and reminders
• Object storage for assets

Authorization

• Start with app-level RBAC
• add policy engine if complexity grows

Notifications

• email service
• Slack bot/webhooks
• scheduled jobs for reminders

10) Important product decisions

Decide early:

• Can guests see each other?
• Can guests upload assets?
• Are comments public to all participants or only the thread?
• Do reviews have versions?
• Can a review be reopened?
• Are approvals binding or just advisory?
• Is there an approval quorum?

11) Recommended launch sequence

A good rollout plan:

Phase 1: MVP

• create review
• upload asset
• invite internal users + guests
• comment/resolve
• role checks
• email notifications

Phase 2: Collaboration

• annotations
• threading
• reminders
• versioning
• review summaries

Phase 3: Enterprise

• SSO
• audit logs
• granular policies
• export controls
• advanced guest management
• retention policies

12) Example policy matrix

Action	Admin	Lead	Designer	Internal Reviewer	Guest
Create review	Yes	Yes	Yes	No	No
View review	Yes	Yes	Yes	Yes	Limited
Comment	Yes	Yes	Yes	Yes	Limited
Resolve comment	Yes	Yes	Yes	No	No
Invite guest	Yes	Yes	No	No	No
Delete review	Yes	Yes	No	No	No

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If you want, I can also give you:

1. a technical architecture diagram,
2. a database schema, or
3. sample RBAC policies and API endpoints for this platform.