diff --git a/backend/package.json b/backend/package.json
index 60b68849..66f642b8 100644
--- a/backend/package.json
+++ b/backend/package.json
@@ -10,6 +10,9 @@
     "fix": "eslint . --ext .ts,.js --fix",
     "postinstall": "tsc"
   },
+  "prisma": {
+    "seed": "ts-node prisma/seed.ts"
+  },
   "keywords": [],
   "author": "",
   "license": "ISC",
diff --git a/backend/prisma/seed.ts b/backend/prisma/seed.ts
new file mode 100644
index 00000000..9a555ed4
--- /dev/null
+++ b/backend/prisma/seed.ts
@@ -0,0 +1,228 @@
+import { PrismaClient, Role, PostingType, PostingStatus } from "@prisma/client";
+import { addDays, setTime } from "../utilities/dateUtils";
+
+const prisma = new PrismaClient();
+
+const users = [
+  {
+    firstName: "Anastasia",
+    lastName: "Admin",
+    authId: process.env.ADMIN_UID,
+    role: Role.ADMIN,
+  },
+  {
+    firstName: "Valorie",
+    lastName: "Volunteer",
+    authId: process.env.VOLUNTEER_UID,
+    role: Role.VOLUNTEER,
+    volunteer: {
+      create: {
+        pronouns: "they/them",
+        hireDate: new Date(),
+        dateOfBirth: new Date("August 19, 2000 23:15:30"),
+      },
+    },
+  },
+  {
+    firstName: "Edna",
+    lastName: "Employee",
+    authId: process.env.EMPLOYEE_UID,
+    role: Role.EMPLOYEE,
+  },
+];
+
+const branches = [
+  {
+    name: "Kitchen",
+  },
+  {
+    name: "Arts",
+  },
+  {
+    name: "Git Branch",
+  },
+];
+
+const skills = [
+  {
+    name: "Danish",
+  },
+  {
+    name: "CPR",
+  },
+  {
+    name: "Breakdancing",
+  },
+];
+
+const today = new Date();
+const postings = [
+  {
+    title: "Danish Instructor",
+    type: PostingType.INDIVIDUAL,
+    status: PostingStatus.PUBLISHED,
+    description: "Lead a Danish making class in Danish",
+    startDate: addDays(today, 30),
+    endDate: addDays(today, 50),
+    autoClosingDate: addDays(today, 20),
+    numVolunteers: 3,
+    shifts: {
+      create: [
+        {
+          startTime: setTime(addDays(today, 31), 13, 30),
+          endTime: setTime(addDays(today, 31), 14, 30),
+        },
+        {
+          startTime: setTime(addDays(today, 33), 13, 30),
+          endTime: setTime(addDays(today, 33), 14, 30),
+        },
+        {
+          startTime: setTime(addDays(today, 35), 13, 30),
+          endTime: setTime(addDays(today, 35), 14, 30),
+        },
+        {
+          startTime: setTime(addDays(today, 35), 13, 30),
+          endTime: setTime(addDays(today, 35), 14, 30),
+        },
+        {
+          startTime: setTime(addDays(today, 37), 13, 30),
+          endTime: setTime(addDays(today, 37), 14, 30),
+        },
+      ],
+    },
+  },
+  {
+    title: "Criossant Making",
+    type: PostingType.INDIVIDUAL,
+    status: PostingStatus.DRAFT,
+    description: "Help with a criossant making class.",
+    startDate: addDays(today, 20),
+    endDate: addDays(today, 30),
+    autoClosingDate: addDays(today, 15),
+    numVolunteers: 2,
+    shifts: {
+      create: [
+        {
+          startTime: setTime(addDays(today, 21), 18, 0),
+          endTime: setTime(addDays(today, 21), 19, 0),
+        },
+        {
+          startTime: setTime(addDays(today, 23), 18, 0),
+          endTime: setTime(addDays(today, 23), 19, 0),
+        },
+        {
+          startTime: setTime(addDays(today, 25), 18, 0),
+          endTime: setTime(addDays(today, 25), 19, 0),
+        },
+        {
+          startTime: setTime(addDays(today, 27), 18, 0),
+          endTime: setTime(addDays(today, 27), 19, 0),
+        },
+        {
+          startTime: setTime(addDays(today, 29), 18, 0),
+          endTime: setTime(addDays(today, 29), 19, 0),
+        },
+      ],
+    },
+  },
+];
+
+const main = async () => {
+  const seedBranches = await prisma.$transaction(
+    branches.map((branch) =>
+      prisma.branch.upsert({
+        where: { name: branch.name },
+        update: {},
+        create: {
+          ...branch,
+        },
+      }),
+    ),
+  );
+
+  const employee = {
+    create: {
+      branch: {
+        connect: {
+          id: seedBranches[0].id,
+        },
+      },
+    },
+  };
+
+  const seedSkills = await prisma.$transaction(
+    skills.map((skill) =>
+      prisma.skill.upsert({
+        where: { name: skill.name },
+        update: {},
+        create: {
+          ...skill,
+        },
+      }),
+    ),
+  );
+
+  const seedUsers = await prisma.$transaction(
+    users.map((user) => {
+      if (!user.authId) {
+        throw new Error(
+          `Test user auth id for ${user.role} is not in environment variables.`,
+        );
+      }
+
+      return prisma.user.upsert({
+        where: { authId: user.authId },
+        update: {},
+        create: {
+          firstName: user.firstName,
+          lastName: user.lastName,
+          authId: user.authId,
+          role: user.role,
+          volunteer: user.volunteer,
+          employee: user.role === Role.EMPLOYEE ? employee : {},
+        },
+        include: {
+          employee: {
+            include: {
+              postings: true,
+            },
+          },
+        },
+      });
+    }),
+  );
+
+  const seedEmployee = seedUsers.find((user) => user.role === "EMPLOYEE");
+  if (seedEmployee?.employee && !seedEmployee.employee.postings.length) {
+    await prisma.$transaction(
+      postings.map((posting) =>
+        prisma.posting.create({
+          data: {
+            ...posting,
+            branch: {
+              connect: {
+                id: seedBranches[0].id,
+              },
+            },
+            employees: {
+              connect: [{ id: seedEmployee?.employee?.id }],
+            },
+            skills: {
+              connect: [{ id: seedSkills[0].id }, { id: seedSkills[1].id }],
+            },
+          },
+        }),
+      ),
+    );
+  }
+};
+
+main()
+  .catch((e) => {
+    // eslint-disable-next-line no-console
+    console.error(e);
+    process.exit(1);
+  })
+  .finally(async () => {
+    await prisma.$disconnect();
+  });
diff --git a/backend/utilities/dateUtils.ts b/backend/utilities/dateUtils.ts
new file mode 100644
index 00000000..9b43e97e
--- /dev/null
+++ b/backend/utilities/dateUtils.ts
@@ -0,0 +1,7 @@
+export const addDays = (date: Date, daysToAdd: number): Date => {
+  return new Date(new Date().setDate(date.getDate() + daysToAdd));
+};
+
+export const setTime = (date: Date, hours: number, minutes: number): Date => {
+  return new Date(date.setHours(hours, minutes));
+};