diff --git a/packages/credential-provider-node/jest.config.integ.js b/packages/credential-provider-node/jest.config.integ.js
deleted file mode 100644
index d09aba7398c7..000000000000
--- a/packages/credential-provider-node/jest.config.integ.js
+++ /dev/null
@@ -1,4 +0,0 @@
-module.exports = {
-  preset: "ts-jest",
-  testMatch: ["**/*.integ.spec.ts"],
-};
diff --git a/packages/credential-provider-node/package.json b/packages/credential-provider-node/package.json
index ef7ff13150cb..b0c51bc0ee5d 100644
--- a/packages/credential-provider-node/package.json
+++ b/packages/credential-provider-node/package.json
@@ -16,8 +16,9 @@
     "build:types:downlevel": "downlevel-dts dist-types dist-types/ts3.4",
     "clean": "rimraf ./dist-* && rimraf *.tsbuildinfo",
     "test": "yarn g:vitest run",
-    "test:integration": "yarn g:jest -c jest.config.integ.js",
-    "test:watch": "yarn g:vitest watch"
+    "test:watch": "yarn g:vitest watch",
+    "test:integration": "yarn g:vitest run -c vitest.config.integ.mts",
+    "test:integration:watch": "yarn g:vitest watch -c vitest.config.integ.mts"
   },
   "keywords": [
     "aws",
diff --git a/packages/credential-provider-node/src/credential-provider-node.integ.spec.ts b/packages/credential-provider-node/src/credential-provider-node.integ.spec.ts
index 7353d322d392..59ca7c8f3007 100644
--- a/packages/credential-provider-node/src/credential-provider-node.integ.spec.ts
+++ b/packages/credential-provider-node/src/credential-provider-node.integ.spec.ts
@@ -5,29 +5,31 @@ import { HttpResponse } from "@smithy/protocol-http";
 import type { SharedConfigInit, SourceProfileInit } from "@smithy/shared-ini-file-loader";
 import type { HttpRequest, NodeHttpHandlerOptions, ParsedIniData, SharedConfigFiles } from "@smithy/types";
 import { AdaptiveRetryStrategy, StandardRetryStrategy } from "@smithy/util-retry";
+import * as childProcess from "child_process";
 import { PassThrough } from "stream";
+import { afterAll, afterEach, beforeAll, beforeEach, describe, expect, test as it, vi } from "vitest";
 
 import { defaultProvider } from "./defaultProvider";
 
-jest.mock("fs", () => {
-  const actual = jest.requireActual("fs");
+vi.mock("fs", async () => {
+  const actual = (await vi.importActual("fs")) as typeof import("fs");
   return {
     ...actual,
-    readFileSync(file: string, ...options: any[]) {
+    readFileSync: vi.fn((file: string, ...options: any[]) => {
       if (file === "token-filepath") {
         return "token-contents";
       }
       return actual.readFileSync(file, ...options);
-    },
+    }),
   };
 });
 
 let iniProfileData: ParsedIniData = null as any;
-jest.mock("@smithy/shared-ini-file-loader", () => {
-  const actual = jest.requireActual("@smithy/shared-ini-file-loader");
+vi.mock("@smithy/shared-ini-file-loader", async () => {
+  const actual = await vi.importActual("@smithy/shared-ini-file-loader");
   return {
     ...actual,
-    async loadSsoSessionData() {
+    loadSsoSessionData: vi.fn(async () => {
       return Object.entries(iniProfileData)
         .filter(([key]) => key.startsWith("sso-session."))
         .reduce(
@@ -37,29 +39,29 @@ jest.mock("@smithy/shared-ini-file-loader", () => {
           }),
           {}
         );
-    },
-    async parseKnownFiles(init: SourceProfileInit): Promise<ParsedIniData> {
+    }),
+    parseKnownFiles: vi.fn(async (init: SourceProfileInit): Promise<ParsedIniData> => {
       return iniProfileData;
-    },
-    async loadSharedConfigFiles(init: SharedConfigInit): Promise<SharedConfigFiles> {
+    }),
+    loadSharedConfigFiles: vi.fn(async (init: SharedConfigInit): Promise<SharedConfigFiles> => {
       return {
         configFile: iniProfileData,
         credentialsFile: iniProfileData,
       };
-    },
-    async getSSOTokenFromFile() {
+    }),
+    getSSOTokenFromFile: vi.fn(async () => {
       return {
         accessToken: "mock_sso_token",
         expiresAt: "3000-01-01T00:00:00.000Z",
       };
-    },
+    }),
   };
 });
 
 const assumeRoleArns: string[] = [];
 
-jest.mock("@smithy/node-http-handler", () => {
-  const actual = jest.requireActual("@smithy/node-http-handler");
+vi.mock("@smithy/node-http-handler", async () => {
+  const actual = await vi.importActual("@smithy/node-http-handler");
 
   class MockNodeHttpHandler {
     static create(instanceOrOptions?: any) {
@@ -68,7 +70,8 @@ jest.mock("@smithy/node-http-handler", () => {
       }
       return new MockNodeHttpHandler();
     }
-    async handle(request: HttpRequest) {
+
+    handle = vi.fn(async (request: HttpRequest) => {
       const body = new PassThrough({});
 
       if (request.body?.includes("RoleArn=")) {
@@ -165,11 +168,15 @@ jest.mock("@smithy/node-http-handler", () => {
           headers: {},
         }),
       };
-    }
-    updateHttpClientConfig(key: keyof NodeHttpHandlerOptions, value: NodeHttpHandlerOptions[typeof key]): void {}
-    httpHandlerConfigs(): NodeHttpHandlerOptions {
+    });
+
+    updateHttpClientConfig = vi.fn(
+      (key: keyof NodeHttpHandlerOptions, value: NodeHttpHandlerOptions[typeof key]): void => {}
+    );
+
+    httpHandlerConfigs = vi.fn((): NodeHttpHandlerOptions => {
       return null as any;
-    }
+    });
   }
 
   return {
@@ -178,11 +185,12 @@ jest.mock("@smithy/node-http-handler", () => {
   };
 });
 
-jest.mock("child_process", () => {
-  const actual = jest.requireActual("child_process");
+vi.mock("child_process", async () => {
+  const actual = (await vi.importActual("child_process")) as typeof childProcess;
+
   return {
     ...actual,
-    exec(bin: string, cb: (err: unknown, data: any) => void, ...args: any[]) {
+    exec: vi.fn((bin: string, cb: (err: unknown, data: any) => void, ...args: any[]) => {
       if (bin === "credential-process") {
         return cb(null, {
           stdout: JSON.stringify({
@@ -194,7 +202,7 @@ jest.mock("child_process", () => {
         });
       }
       return actual.exec(bin, cb, ...args);
-    },
+    }),
   };
 });
 
@@ -271,8 +279,8 @@ describe("credential-provider-node integration test", () => {
   });
 
   afterAll(async () => {
-    jest.clearAllMocks();
-    jest.clearAllTimers();
+    vi.clearAllMocks();
+    vi.clearAllTimers();
   });
 
   describe("fromEnv", () => {
@@ -570,7 +578,7 @@ describe("credential-provider-node integration test", () => {
       iniProfileData.credential_source_profile = {
         credential_source: "EcsContainer",
       };
-      const spy = jest.spyOn(credentialProviderHttp, "fromHttp");
+      const spy = vi.spyOn(credentialProviderHttp, "fromHttp");
       sts = new STS({
         region: "us-west-2",
         credentials: defaultProvider({
@@ -658,7 +666,7 @@ describe("credential-provider-node integration test", () => {
         role_arn: "ROLE_ARN_1",
       };
 
-      const spy = jest.spyOn(credentialProviderHttp, "fromHttp");
+      const spy = vi.spyOn(credentialProviderHttp, "fromHttp");
       sts = new STS({
         region: "us-west-2",
         credentials: defaultProvider({
@@ -710,7 +718,7 @@ describe("credential-provider-node integration test", () => {
         // This scenario tests the option of having no role_arn in this step of the chain.
       };
 
-      const spy = jest.spyOn(credentialProviderHttp, "fromHttp");
+      const spy = vi.spyOn(credentialProviderHttp, "fromHttp");
       sts = new STS({
         region: "us-west-2",
         credentials: defaultProvider({
@@ -805,7 +813,7 @@ describe("credential-provider-node integration test", () => {
       });
     });
 
-    xit("should use instance metadata unless IMDS is disabled", async () => {
+    it.skip("should use instance metadata unless IMDS is disabled", async () => {
       // TODO
     });
   });