diff --git a/backend/api/jest.config.js b/backend/api/jest.config.js
new file mode 100644
index 00000000..08bc216a
--- /dev/null
+++ b/backend/api/jest.config.js
@@ -0,0 +1,26 @@
+module.exports = {
+    preset: 'ts-jest',
+    testEnvironment: 'node',
+
+    rootDir: '.',
+    testMatch: [
+        "<rootDir>/tests/**/*.test.ts",
+        "<rootDir>/tests/**/*.spec.ts"
+    ],
+
+    moduleNameMapper: {
+        "^api/(.*)$": "<rootDir>/src/$1",
+        "^shared/(.*)$": "<rootDir>/../shared/src/$1",
+        "^common/(.*)$": "<rootDir>/../../common/src/$1",
+        "^email/(.*)$": "<rootDir>/../email/emails/$1"
+    },
+
+    moduleFileExtensions: ["ts", "js", "json"],
+    clearMocks: true,
+
+    globals: {
+        'ts-jest': {
+            tsconfig: '<rootDir>/tsconfig.json'
+        }
+    }
+};
diff --git a/backend/api/package.json b/backend/api/package.json
index afc758bc..cdff8312 100644
--- a/backend/api/package.json
+++ b/backend/api/package.json
@@ -20,7 +20,8 @@
     "verify": "yarn --cwd=../.. verify",
     "verify:dir": "npx eslint . --max-warnings 0",
     "regen-types": "cd ../supabase && make ENV=prod regen-types",
-    "regen-types-dev": "cd ../supabase && make ENV=dev regen-types-dev"
+    "regen-types-dev": "cd ../supabase && make ENV=dev regen-types-dev",
+    "test": "jest"
   },
   "engines": {
     "node": ">=20.0.0"
diff --git a/backend/api/tests/integration/.keep b/backend/api/tests/integration/.keep
new file mode 100644
index 00000000..e69de29b
diff --git a/backend/api/tests/unit/get-users.unit.test.ts b/backend/api/tests/unit/get-users.unit.test.ts
new file mode 100644
index 00000000..36ca0e3f
--- /dev/null
+++ b/backend/api/tests/unit/get-users.unit.test.ts
@@ -0,0 +1,58 @@
+import { getUser } from "api/get-user";
+import { createSupabaseDirectClient } from "shared/supabase/init";
+import { toUserAPIResponse } from "common/api/user-types";
+import { convertUser } from "common/supabase/users";
+
+jest.mock("shared/supabase/init");
+jest.mock("common/supabase/users");
+jest.mock("common/api/utils");
+describe('getUser', () =>{
+    let mockPg: any;
+
+    beforeEach(() => {
+        mockPg = {
+            oneOrNone: jest.fn(),
+        };
+        (createSupabaseDirectClient as jest.Mock).mockReturnValue(mockPg);
+
+        jest.clearAllMocks();
+    });
+
+    it('should fetch user successfully by id', async () => {
+        const mockDbUser = {
+            created_time: '2025-11-11T16:42:05.188Z',
+            data: { link: {}, avatarUrl: "", isBannedFromPosting: false },
+            id: 'feUaIfcxVmJZHJOVVfawLTTPgZiP',
+            name: 'Franklin Buckridge',
+            name_username_vector: "'buckridg':2,4 'franklin':1,3",
+            username: 'Franky_Buck'
+        };
+        const mockConvertedUser = {
+            created_time: new Date(),
+            id: 'feUaIfcxVmJZHJOVVfawLTTPgZiP',
+            name: 'Franklin Buckridge',
+            name_username_vector: "'buckridg':2,4 'franklin':1,3",
+            username: 'Franky_Buck'
+
+        };
+        const mockApiResponse = {
+            created_time: '2025-11-11T16:42:05.188Z',
+            data: { link: {}, avatarUrl: "", isBannedFromPosting: false },
+            id: 'feUaIfcxVmJZHJOVVfawLTTPgZiP',
+            name: 'Franklin Buckridge',
+            username: 'Franky_Buck'
+        };
+
+        // mockPg.oneOrNone.mockImplementation((query: any, params: any, callback: any) => {
+        //     return Promise.resolve(callback(mockDbUser))
+        // })
+
+        // (convertUser as jest.Mock).mockReturnValue(mockConvertedUser);
+        // ( toUserAPIResponse as jest.Mock).mockReturnValue(mockApiResponse);
+
+        // const result = await getUser({id: 'feUaIfcxVmJZHJOVVfawLTTPgZiP'})
+
+        // console.log(result);
+        
+    })
+})
\ No newline at end of file
diff --git a/backend/api/tsconfig.test.json b/backend/api/tsconfig.test.json
new file mode 100644
index 00000000..7c7a7dc6
--- /dev/null
+++ b/backend/api/tsconfig.test.json
@@ -0,0 +1,14 @@
+{
+  "extends": "./tsconfig.json",
+  "compilerOptions": {
+    "rootDir": ".",
+    "baseUrl": ".",
+    "paths": {
+      "api/*": ["src/*"],
+      "shared/*": ["../shared/src/*"],
+      "common/*": ["../../common/src/*"],
+      "email/*": ["../email/emails/*"]
+    }
+  },
+  "include": ["tests/**/*.ts", "src/**/*.ts"]
+}
diff --git a/backend/email/tests/integration/.keep b/backend/email/tests/integration/.keep
new file mode 100644
index 00000000..e69de29b
diff --git a/backend/email/tests/unit/.keep b/backend/email/tests/unit/.keep
new file mode 100644
index 00000000..e69de29b
diff --git a/backend/shared/tests/integration/.keep b/backend/shared/tests/integration/.keep
new file mode 100644
index 00000000..e69de29b
diff --git a/backend/shared/tests/integration/README.md b/backend/shared/tests/integration/README.md
new file mode 100644
index 00000000..ad66a436
--- /dev/null
+++ b/backend/shared/tests/integration/README.md
@@ -0,0 +1 @@
+Note: may not be needed. `shared` rarely needs integration tests.
\ No newline at end of file
diff --git a/backend/shared/tests/unit/.keep b/backend/shared/tests/unit/.keep
new file mode 100644
index 00000000..e69de29b
diff --git a/common/tests/integration/.keep b/common/tests/integration/.keep
new file mode 100644
index 00000000..e69de29b
diff --git a/common/tests/unit/.keep b/common/tests/unit/.keep
new file mode 100644
index 00000000..e69de29b
diff --git a/common/tests/jsonToMarkdown.test.ts b/common/tests/unit/jsonToMarkdown.test.ts
similarity index 68%
rename from common/tests/jsonToMarkdown.test.ts
rename to common/tests/unit/jsonToMarkdown.test.ts
index 48ae30ec..38022012 100644
--- a/common/tests/jsonToMarkdown.test.ts
+++ b/common/tests/unit/jsonToMarkdown.test.ts
@@ -1,4 +1,4 @@
-import {jsonToMarkdown} from "../src/md";
+import {jsonToMarkdown} from "../../src/md";
 
 describe('JSON to Markdown', () => {
   it('', () => {
diff --git a/tsconfig.json b/tsconfig.json
new file mode 100644
index 00000000..fb7654a2
--- /dev/null
+++ b/tsconfig.json
@@ -0,0 +1,7 @@
+{
+  "files": [],
+  "references": [
+    { "path": "./backend/api" },
+    { "path": "./backend/api/tsconfig.test.json" }
+  ]
+}
diff --git a/web/tests/integration/.keep b/web/tests/integration/.keep
new file mode 100644
index 00000000..e69de29b
diff --git a/web/tests/unit/.keep b/web/tests/unit/.keep
new file mode 100644
index 00000000..e69de29b