diff --git a/services/apps/script_executor_worker/package.json b/services/apps/script_executor_worker/package.json
index 27bb9d9150..82654bff8e 100644
--- a/services/apps/script_executor_worker/package.json
+++ b/services/apps/script_executor_worker/package.json
@@ -10,6 +10,7 @@
     "cleanup-fork-activities": "npx tsx src/bin/cleanup-fork-activities-and-maintainers.ts",
     "cleanup-member-aggregates": "npx tsx src/bin/cleanup-member-aggregates.ts",
     "recalculate-enrichment-affiliations": "npx tsx src/bin/recalculate-enrichment-affiliations.ts",
+    "recalculate-all-affiliations": "npx tsx src/bin/recalculate-all-affiliations.ts",
     "add-lf-projects-to-collection": "npx tsx src/bin/add-lf-projects-to-collection.ts",
     "lint": "npx eslint --ext .ts src --max-warnings=0",
     "format": "npx prettier --write \"src/**/*.ts\"",
diff --git a/services/apps/script_executor_worker/src/bin/recalculate-all-affiliations.ts b/services/apps/script_executor_worker/src/bin/recalculate-all-affiliations.ts
new file mode 100644
index 0000000000..1e2eb47710
--- /dev/null
+++ b/services/apps/script_executor_worker/src/bin/recalculate-all-affiliations.ts
@@ -0,0 +1,340 @@
+import { WorkflowIdReusePolicy } from '@temporalio/client'
+
+import { DEFAULT_TENANT_ID } from '@crowd/common'
+import { WRITE_DB_CONFIG, getDbConnection } from '@crowd/data-access-layer/src/database'
+import { pgpQx } from '@crowd/data-access-layer/src/queryExecutor'
+import { getServiceChildLogger } from '@crowd/logging'
+import { TEMPORAL_CONFIG, getTemporalClient } from '@crowd/temporal'
+
+const log = getServiceChildLogger('recalculate-all-affiliations')
+
+interface BrokenMember {
+  memberId: string
+  activeOrgIds: string[]
+  staleOrgIds: string[]
+}
+
+interface ScriptOptions {
+  pageSize: number
+  concurrency: number
+  pageDelayMs: number
+  workflowDelayMs: number
+  startAfter: string | null
+  dryRun: boolean
+  limit: number | null
+  maxPages: number | null
+  emptyPageDelayMs: number | null
+}
+
+function parseArgs(): ScriptOptions {
+  const args = process.argv.slice(2)
+
+  const getArg = (flag: string): string | undefined => {
+    const idx = args.indexOf(flag)
+    if (idx !== -1 && idx + 1 < args.length) return args[idx + 1]
+    return undefined
+  }
+
+  const pageSize = parseInt(getArg('--page-size') ?? '100', 10)
+  const concurrency = parseInt(getArg('--concurrency') ?? '20', 10)
+  const pageDelayMs = parseInt(getArg('--page-delay') ?? '2000', 10)
+  const workflowDelayMs = parseInt(getArg('--workflow-delay') ?? '0', 10)
+  const startAfter = getArg('--start-after') ?? null
+  const dryRun = args.includes('--dry-run')
+  const emptyPageDelayRaw = getArg('--empty-page-delay')
+  const emptyPageDelayMs = emptyPageDelayRaw !== undefined ? parseInt(emptyPageDelayRaw, 10) : null
+  const limitRaw = getArg('--limit')
+  const limit = limitRaw !== undefined ? parseInt(limitRaw, 10) : null
+  const maxPagesRaw = getArg('--max-pages')
+  const maxPages = maxPagesRaw !== undefined ? parseInt(maxPagesRaw, 10) : null
+
+  if (isNaN(pageSize) || pageSize <= 0) {
+    log.error('--page-size must be a positive integer')
+    process.exit(1)
+  }
+  if (isNaN(concurrency) || concurrency <= 0) {
+    log.error('--concurrency must be a positive integer')
+    process.exit(1)
+  }
+  if (isNaN(pageDelayMs) || pageDelayMs < 0) {
+    log.error('--page-delay must be a non-negative integer')
+    process.exit(1)
+  }
+  if (isNaN(workflowDelayMs) || workflowDelayMs < 0) {
+    log.error('--workflow-delay must be a non-negative integer')
+    process.exit(1)
+  }
+  if (emptyPageDelayMs !== null && (isNaN(emptyPageDelayMs) || emptyPageDelayMs < 0)) {
+    log.error('--empty-page-delay must be a non-negative integer')
+    process.exit(1)
+  }
+  if (limit !== null && (isNaN(limit) || limit <= 0)) {
+    log.error('--limit must be a positive integer')
+    process.exit(1)
+  }
+  if (maxPages !== null && (isNaN(maxPages) || maxPages <= 0)) {
+    log.error('--max-pages must be a positive integer')
+    process.exit(1)
+  }
+
+  return {
+    pageSize,
+    concurrency,
+    pageDelayMs,
+    workflowDelayMs,
+    startAfter,
+    dryRun,
+    limit,
+    maxPages,
+    emptyPageDelayMs,
+  }
+}
+
+async function fetchMemberIdPage(
+  qx: ReturnType<typeof pgpQx>,
+  afterMemberId: string | null,
+  pageSize: number,
+): Promise<string[]> {
+  const cursorClause = afterMemberId ? `AND "memberId" > $(afterMemberId)` : ''
+
+  const rows = await qx.select(
+    `
+    SELECT "memberId"
+    FROM "memberOrganizations"
+    WHERE TRUE ${cursorClause}
+    GROUP BY "memberId"
+    ORDER BY "memberId"
+    LIMIT $(pageSize)
+    `,
+    { afterMemberId, pageSize },
+  )
+
+  return rows.map((r: Record<string, unknown>) => r.memberId as string)
+}
+
+async function findBrokenMembers(
+  qx: ReturnType<typeof pgpQx>,
+  memberIds: string[],
+): Promise<BrokenMember[]> {
+  // Deduplicate to (memberId, organizationId) pairs first — a member may have thousands
+  // of activities but only a handful of distinct org attributions.
+  const staleRows = await qx.select(
+    `
+    WITH pairs AS (
+      SELECT DISTINCT "memberId", "organizationId"
+      FROM "activityRelations"
+      WHERE "memberId" = ANY($(memberIds)::uuid[])
+        AND "organizationId" IS NOT NULL
+    )
+    SELECT p."memberId", p."organizationId" AS "staleOrgId"
+    FROM pairs p
+    WHERE NOT EXISTS (
+      SELECT 1 FROM "memberOrganizations" mo
+      WHERE mo."memberId" = p."memberId"
+        AND mo."organizationId" = p."organizationId"
+        AND mo."deletedAt" IS NULL
+    )
+    `,
+    { memberIds },
+  )
+
+  if (staleRows.length === 0) {
+    return []
+  }
+
+  const staleMap = new Map<string, string[]>()
+  for (const r of staleRows as Record<string, string>[]) {
+    const existing = staleMap.get(r.memberId) ?? []
+    existing.push(r.staleOrgId)
+    staleMap.set(r.memberId, existing)
+  }
+
+  const brokenMemberIds = [...staleMap.keys()]
+
+  const orgRows = await qx.select(
+    `
+    SELECT "memberId", array_agg(DISTINCT "organizationId") AS "activeOrgIds"
+    FROM "memberOrganizations"
+    WHERE "memberId" = ANY($(brokenMemberIds)::uuid[])
+      AND "deletedAt" IS NULL
+    GROUP BY "memberId"
+    `,
+    { brokenMemberIds },
+  )
+
+  const activeOrgMap = new Map<string, string[]>(
+    orgRows.map((r: Record<string, unknown>) => [
+      r.memberId as string,
+      (r.activeOrgIds as string[] | null) ?? [],
+    ]),
+  )
+
+  return brokenMemberIds.map((memberId: string) => ({
+    memberId,
+    activeOrgIds: activeOrgMap.get(memberId) ?? [],
+    staleOrgIds: staleMap.get(memberId) ?? [],
+  }))
+}
+
+async function main() {
+  const opts = parseArgs()
+
+  log.info(
+    {
+      pageSize: opts.pageSize,
+      concurrency: opts.concurrency,
+      pageDelayMs: opts.pageDelayMs,
+      workflowDelayMs: opts.workflowDelayMs,
+      startAfter: opts.startAfter,
+      dryRun: opts.dryRun,
+      limit: opts.limit,
+      maxPages: opts.maxPages,
+      emptyPageDelayMs: opts.emptyPageDelayMs,
+    },
+    'Starting recalculate-all-affiliations',
+  )
+
+  const dbConnection = await getDbConnection(WRITE_DB_CONFIG())
+  const qx = pgpQx(dbConnection)
+  const temporal = await getTemporalClient(TEMPORAL_CONFIG())
+
+  let cursor: string | null = opts.startAfter
+  let pageNum = 0
+  let totalScanned = 0
+  let totalBroken = 0
+  let totalSucceeded = 0
+  let totalFailed = 0
+
+  let hasMore = true
+  while (hasMore) {
+    pageNum++
+
+    const memberIds = await fetchMemberIdPage(qx, cursor, opts.pageSize)
+
+    if (memberIds.length === 0) {
+      log.info('No more members to process.')
+      hasMore = false
+      continue
+    }
+
+    const lastMemberId = memberIds[memberIds.length - 1]
+    totalScanned += memberIds.length
+
+    const brokenMembers = await findBrokenMembers(qx, memberIds)
+    totalBroken += brokenMembers.length
+
+    log.info(
+      `Page ${pageNum}: scanned ${memberIds.length} | broken: ${brokenMembers.length} | cursor: ${lastMemberId}`,
+    )
+
+    if (brokenMembers.length > 0) {
+      if (opts.dryRun) {
+        const loggedSoFar = totalBroken - brokenMembers.length
+        const remaining = opts.limit !== null ? opts.limit - loggedSoFar : brokenMembers.length
+        const toLog = brokenMembers.slice(0, remaining)
+        for (const { memberId, activeOrgIds, staleOrgIds } of toLog) {
+          log.info(
+            `[DRY RUN] broken member: ${memberId} | stale orgs: [${staleOrgIds.join(', ')}] | active orgs: ${activeOrgIds.length}`,
+          )
+        }
+        if (opts.limit !== null && loggedSoFar + toLog.length >= opts.limit) {
+          log.info(`Limit of ${opts.limit} members reached.`)
+          hasMore = false
+          cursor = lastMemberId
+          continue
+        }
+      } else {
+        const triggeredSoFar = totalSucceeded + totalFailed
+        const remaining = opts.limit !== null ? opts.limit - triggeredSoFar : brokenMembers.length
+        if (remaining <= 0) {
+          log.info(`Limit of ${opts.limit} workflows reached.`)
+          hasMore = false
+          continue
+        }
+
+        const toProcess = brokenMembers.slice(0, remaining)
+
+        let index = 0
+        const worker = async () => {
+          while (index < toProcess.length) {
+            const { memberId, activeOrgIds, staleOrgIds } = toProcess[index++]
+            try {
+              log.info(
+                `Triggering memberUpdate: ${memberId} | stale orgs: [${staleOrgIds.join(', ')}] | active orgs: ${activeOrgIds.length}`,
+              )
+              await temporal.workflow.start('memberUpdate', {
+                taskQueue: 'profiles',
+                workflowId: `member-update/${DEFAULT_TENANT_ID}/${memberId}`,
+                workflowIdReusePolicy:
+                  WorkflowIdReusePolicy.WORKFLOW_ID_REUSE_POLICY_TERMINATE_IF_RUNNING,
+                retry: { maximumAttempts: 10 },
+                args: [
+                  {
+                    member: { id: memberId },
+                    memberOrganizationIds: activeOrgIds,
+                    syncToOpensearch: true,
+                  },
+                ],
+                searchAttributes: { TenantId: [DEFAULT_TENANT_ID] },
+              })
+              if (opts.workflowDelayMs > 0) {
+                await new Promise((resolve) => setTimeout(resolve, opts.workflowDelayMs))
+              }
+              totalSucceeded++
+            } catch (err) {
+              totalFailed++
+              log.error({ err }, 'Failed to process member')
+            }
+          }
+        }
+
+        await Promise.all(Array.from({ length: Math.min(opts.concurrency, toProcess.length) }, worker))
+        log.info(`Page ${pageNum} done: ${totalSucceeded} ok, ${totalFailed} failed`)
+
+        if (opts.limit !== null && totalSucceeded + totalFailed >= opts.limit) {
+          log.info(`Limit of ${opts.limit} workflows reached.`)
+          hasMore = false
+          continue
+        }
+      }
+    }
+
+    log.info(`Resume with: --start-after ${lastMemberId}`)
+    cursor = lastMemberId
+
+    if (memberIds.length < opts.pageSize) {
+      hasMore = false
+    }
+
+    if (opts.maxPages !== null && pageNum >= opts.maxPages) {
+      log.info(`Max pages of ${opts.maxPages} reached.`)
+      hasMore = false
+    }
+
+    const delayMs =
+      brokenMembers.length === 0 && opts.emptyPageDelayMs !== null
+        ? opts.emptyPageDelayMs
+        : opts.pageDelayMs
+    if (delayMs > 0) {
+      await new Promise((resolve) => setTimeout(resolve, delayMs))
+    }
+  }
+
+  const brokenPct = totalScanned > 0 ? ((totalBroken / totalScanned) * 100).toFixed(2) : '0.00'
+  log.info(
+    {
+      pagesProcessed: pageNum,
+      membersScanned: totalScanned,
+      membersBroken: `${totalBroken} (${brokenPct}%)`,
+      ...(opts.dryRun ? {} : { workflowsSucceeded: totalSucceeded, workflowsFailed: totalFailed }),
+    },
+    'Done',
+  )
+
+  process.exit(totalFailed > 0 ? 1 : 0)
+}
+
+main().catch((err) => {
+  log.error({ err }, 'Unexpected error')
+  process.exit(1)
+})