diff --git a/src/back/models/Personnel.ts b/src/back/models/Personnel.ts
index 872e5e446..793eefc16 100644
--- a/src/back/models/Personnel.ts
+++ b/src/back/models/Personnel.ts
@@ -1,4 +1,6 @@
 import { Model } from 'decentraland-gatsby/dist/entities/Database/model'
+import isEthereumAddress from 'validator/lib/isEthereumAddress'
+import { ZodSchema, z } from 'zod'
 
 import { TeamMember } from '../../entities/Grant/types'
 
@@ -11,6 +13,21 @@ export type PersonnelAttributes = TeamMember & {
   created_at: Date
 }
 
+const addressCheck = (data: string) => !data || (!!data && isEthereumAddress(data))
+
+export type PersonnelInCreation = Pick<
+  PersonnelAttributes,
+  'name' | 'address' | 'role' | 'about' | 'relevantLink' | 'project_id'
+>
+export const PersonnelInCreationSchema: ZodSchema<PersonnelInCreation> = z.object({
+  name: z.string().min(1).max(80),
+  address: z.string().refine(addressCheck).optional().or(z.null()),
+  role: z.string().min(1).max(80),
+  about: z.string().min(1).max(750),
+  relevantLink: z.string().min(0).max(200).url().optional().or(z.literal('')),
+  project_id: z.string().min(0),
+})
+
 export default class PersonnelModel extends Model<PersonnelAttributes> {
   static tableName = 'personnel'
   static withTimestamps = false
diff --git a/src/back/routes/project.ts b/src/back/routes/project.ts
index 3934e14c7..5bb8c5cdd 100644
--- a/src/back/routes/project.ts
+++ b/src/back/routes/project.ts
@@ -1,3 +1,4 @@
+import { WithAuth, auth } from 'decentraland-gatsby/dist/entities/Auth/middleware'
 import RequestError from 'decentraland-gatsby/dist/entities/Route/error'
 import handleAPI, { handleJSON } from 'decentraland-gatsby/dist/entities/Route/handle'
 import routes from 'decentraland-gatsby/dist/entities/Route/routes'
@@ -5,10 +6,14 @@ import { Request } from 'express'
 
 import CacheService, { TTL_1_HS } from '../../services/CacheService'
 import { ProjectService } from '../../services/ProjectService'
+import { isProjectAuthorOrCoauthor } from '../../utils/projects'
+import { PersonnelAttributes, PersonnelInCreationSchema } from '../models/Personnel'
 import { isValidDate, validateId } from '../utils/validations'
 
 export default routes((route) => {
+  const withAuth = auth()
   route.get('/projects', handleJSON(getProjects))
+  route.post('/projects/personnel/', withAuth, handleAPI(addPersonnel))
   route.get('/projects/:project', handleAPI(getProject))
   route.get('/projects/pitches-total', handleJSON(getOpenPitchesTotal))
   route.get('/projects/tenders-total', handleJSON(getOpenTendersTotal))
@@ -60,3 +65,21 @@ async function getOpenPitchesTotal() {
 async function getOpenTendersTotal() {
   return await ProjectService.getOpenTendersTotal()
 }
+
+async function addPersonnel(req: WithAuth): Promise<PersonnelAttributes> {
+  const user = req.auth!
+  const { personnel } = req.body
+  validateId(personnel.project_id)
+  const project = await ProjectService.getProject(personnel.project_id)
+  if (!project) {
+    throw new RequestError(`Project "${personnel.project_id}" not found`, RequestError.NotFound)
+  }
+  if (!isProjectAuthorOrCoauthor(user, project)) {
+    throw new RequestError("Only the project's authors and coauthors can create personnel", RequestError.Unauthorized)
+  }
+  const parsedPersonnel = PersonnelInCreationSchema.safeParse(personnel)
+  if (!parsedPersonnel.success) {
+    throw new RequestError(`Invalid personnel: ${parsedPersonnel.error.message}`, RequestError.BadRequest)
+  }
+  return await ProjectService.addPersonnel(parsedPersonnel.data, user)
+}
diff --git a/src/entities/Grant/types.ts b/src/entities/Grant/types.ts
index c92c6a0ba..e8b9ba170 100644
--- a/src/entities/Grant/types.ts
+++ b/src/entities/Grant/types.ts
@@ -439,7 +439,7 @@ export type GrantRequestDueDiligence = {
 
 export type TeamMember = {
   name: string
-  address?: string
+  address?: string | null
   role: string
   about: string
   relevantLink?: string
diff --git a/src/services/ProjectService.ts b/src/services/ProjectService.ts
index 203ff4c5f..902f27b70 100644
--- a/src/services/ProjectService.ts
+++ b/src/services/ProjectService.ts
@@ -1,6 +1,6 @@
 import crypto from 'crypto'
 
-import PersonnelModel, { PersonnelAttributes } from '../back/models/Personnel'
+import PersonnelModel, { PersonnelAttributes, PersonnelInCreation } from '../back/models/Personnel'
 import ProjectModel, { ProjectAttributes } from '../back/models/Project'
 import ProjectMilestoneModel, { ProjectMilestone, ProjectMilestoneStatus } from '../back/models/ProjectMilestone'
 import { TransparencyVesting } from '../clients/Transparency'
@@ -234,4 +234,16 @@ export class ProjectService {
 
     return project
   }
+
+  static async addPersonnel(newPersonnel: PersonnelInCreation, user?: string) {
+    const { address } = newPersonnel
+    return await PersonnelModel.create({
+      ...newPersonnel,
+      address: address && address?.length > 0 ? address : null,
+      id: crypto.randomUUID(),
+      updated_by: user,
+      created_at: new Date(),
+      deleted: false,
+    })
+  }
 }
diff --git a/src/utils/projects.ts b/src/utils/projects.ts
index ee5e5a512..d66e90a0d 100644
--- a/src/utils/projects.ts
+++ b/src/utils/projects.ts
@@ -1,6 +1,8 @@
+import { Project } from '../back/models/Project'
 import { TransparencyVesting } from '../clients/Transparency'
 import { ProjectStatus, TransparencyProjectStatus } from '../entities/Grant/types'
 import { ProposalAttributes, ProposalProject } from '../entities/Proposal/types'
+import { isSameAddress } from '../entities/Snapshot/utils'
 
 import Time from './date/Time'
 
@@ -80,3 +82,7 @@ export function createProposalProject(proposal: ProposalAttributes, vesting?: Tr
     ...vestingData,
   }
 }
+
+export function isProjectAuthorOrCoauthor(user: string, project: Project) {
+  return isSameAddress(user, project.author) || !!project.coauthors?.some((coauthor) => isSameAddress(user, coauthor))
+}