diff --git a/plugins/jenkins-backend/src/service/router.ts b/plugins/jenkins-backend/src/service/router.ts
index 95bbde4bb3..6ba7f9e574 100644
--- a/plugins/jenkins-backend/src/service/router.ts
+++ b/plugins/jenkins-backend/src/service/router.ts
@@ -52,8 +52,10 @@ const jobTreeSpec = `actions[*],
                    ${lastBuildTreeSpec}
                    jobs{0,1},
                    name,
+                   fullName,
                    displayName,
-                   fullDisplayName`;
+                   fullDisplayName,
+                   inQueue`;
 
 const jobsTreeSpec = `jobs[
                    ${jobTreeSpec}
@@ -67,8 +69,7 @@ export interface RouterOptions {
 export async function createRouter(
   options: RouterOptions,
 ): Promise<express.Router> {
-  // @ts-ignore keeping unused logger for future use
-  const { logger, jenkinsInfoProvider } = options;
+  const { jenkinsInfoProvider } = options;
 
   const router = Router();
   router.use(express.json());
@@ -169,6 +170,34 @@ export async function createRouter(
     },
   );
 
+  router.post(
+    '/v1/entity/:namespace/:kind/:name/job/:jobName/:buildNumber::rebuild',
+    async (request, response) => {
+      const { namespace, kind, name, jobName } = request.params;
+
+      const jenkinsInfo = await jenkinsInfoProvider.getInstance({
+        entityRef: {
+          kind,
+          namespace,
+          name,
+        },
+        jobName,
+      });
+
+      const client = await getClient(jenkinsInfo);
+
+      // looks like the current SDK only supports triggering a new build
+      // can't see any support for replay (re-running the specific build with the same SCM info)
+
+      // Note Jenkins itself has concepts of rebuild and replay on a job.
+      // The latter should be possible to trigger with a POST to /replay/rebuild
+      await client.job.build(jobName);
+
+      // TODO: return the buildNumber which was started.
+      response.send({});
+    },
+  );
+
   router.use(errorHandler());
   return router;
 }
diff --git a/plugins/jenkins/src/api/JenkinsApi.ts b/plugins/jenkins/src/api/JenkinsApi.ts
index a816cc3afd..68f712b09b 100644
--- a/plugins/jenkins/src/api/JenkinsApi.ts
+++ b/plugins/jenkins/src/api/JenkinsApi.ts
@@ -62,7 +62,7 @@ export interface Project {
   inQueue: string;
   // added by us
   status: string; // == inQueue ? 'queued' : lastBuild.building ? 'running' : lastBuild.result,
-  onRestartClick: () => void; // TODO handle.* ?
+  onRestartClick: () => Promise<void>; // TODO rename to handle.* ? also, should this be on lastBuild?
 }
 
 export interface JenkinsApi {
@@ -98,7 +98,11 @@ export interface JenkinsApi {
     buildNumber: string,
   ): Promise<Build>;
 
-  retry(entity: EntityName, jobName: string, buildNumber: string): Promise<any>;
+  retry(
+    entity: EntityName,
+    jobName: string,
+    buildNumber: string,
+  ): Promise<void>;
 }
 
 export class JenkinsApiImpl implements JenkinsApi {
@@ -135,7 +139,14 @@ export class JenkinsApiImpl implements JenkinsApi {
       },
     });
 
-    return (await response.json()).projects;
+    return (
+      (await response.json()).projects?.map((p: Project) => ({
+        ...p,
+        onRestartClick: async () => {
+          await this.retry(entity, p.fullName, String(p.lastBuild.number));
+        },
+      })) || []
+    );
   }
 
   async getBuild(
@@ -160,14 +171,23 @@ export class JenkinsApiImpl implements JenkinsApi {
     return (await response.json()).build;
   }
 
-  retry(
-    // @ts-ignore unused because unimplemented
+  async retry(
     entity: EntityName,
-    // @ts-ignore unused because unimplemented
     jobName: string,
-    // @ts-ignore unused because unimplemented
     buildNumber: string,
-  ): Promise<any> {
-    return Promise.resolve(undefined);
+  ): Promise<void> {
+    const url = `${await this.discoveryApi.getBaseUrl('jenkins')}/v1/entity/${
+      entity.namespace
+    }/${entity.kind}/${entity.name}/job/${encodeURIComponent(
+      jobName,
+    )}/${buildNumber}:rebuild`;
+
+    const idToken = await this.identityApi.getIdToken();
+    await fetch(url, {
+      method: 'POST',
+      headers: {
+        ...(idToken && { Authorization: `Bearer ${idToken}` }),
+      },
+    });
   }
 }
diff --git a/plugins/jenkins/src/components/BuildWithStepsPage/BuildWithStepsPage.tsx b/plugins/jenkins/src/components/BuildWithStepsPage/BuildWithStepsPage.tsx
index 0b466f1f2e..9d8a4c11e4 100644
--- a/plugins/jenkins/src/components/BuildWithStepsPage/BuildWithStepsPage.tsx
+++ b/plugins/jenkins/src/components/BuildWithStepsPage/BuildWithStepsPage.tsx
@@ -48,6 +48,7 @@ const useStyles = makeStyles(theme => ({
 }));
 
 const BuildWithStepsView = () => {
+  // TODO: Add a test that react-router decodes this (even though `generatePath` doesn't encode it for you!)
   const { jobName, buildNumber } = useRouteRefParams(buildRouteRef);
   const classes = useStyles();
 
diff --git a/plugins/jenkins/src/components/BuildsPage/lib/CITable/CITable.tsx b/plugins/jenkins/src/components/BuildsPage/lib/CITable/CITable.tsx
index f4c3e26e92..7c1e7db8b1 100644
--- a/plugins/jenkins/src/components/BuildsPage/lib/CITable/CITable.tsx
+++ b/plugins/jenkins/src/components/BuildsPage/lib/CITable/CITable.tsx
@@ -100,11 +100,11 @@ const generatedColumns: TableColumn[] = [
         <Link
           component={RouterLink}
           to={generatePath(buildRouteRef.path, {
-            jobName: row.fullName,
-            buildNumber: row.lastBuild?.number.toString(),
+            jobName: encodeURIComponent(row.fullName),
+            buildNumber: String(row.lastBuild?.number),
           })}
         >
-          {row.fullName}
+          {row.fullDisplayName}
         </Link>
       );
     },
diff --git a/plugins/jenkins/src/components/useBuildWithSteps.ts b/plugins/jenkins/src/components/useBuildWithSteps.ts
index cf2719d1e8..82f3634941 100644
--- a/plugins/jenkins/src/components/useBuildWithSteps.ts
+++ b/plugins/jenkins/src/components/useBuildWithSteps.ts
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-import { useCallback } from 'react';
+import { useCallback, useMemo } from 'react';
 import { useAsyncRetry } from 'react-use';
 import { jenkinsApiRef } from '../api';
 import { useAsyncPolling } from './useAsyncPolling';
@@ -32,7 +32,7 @@ export function useBuildWithSteps(jobName: string, buildNumber: string) {
   const api = useApi(jenkinsApiRef);
   const errorApi = useApi(errorApiRef);
   const { entity } = useEntity();
-  const entityName = getEntityName(entity);
+  const entityName = useMemo(() => getEntityName(entity), [entity]);
 
   const getBuildWithSteps = useCallback(async () => {
     try {
@@ -43,14 +43,6 @@ export function useBuildWithSteps(jobName: string, buildNumber: string) {
     }
   }, [buildNumber, jobName, entityName, api, errorApi]);
 
-  const restartBuild = async () => {
-    try {
-      await api.retry(entityName, jobName, buildNumber);
-    } catch (e) {
-      errorApi.post(e);
-    }
-  };
-
   const { loading, value, retry } = useAsyncRetry(() => getBuildWithSteps(), [
     getBuildWithSteps,
   ]);
@@ -63,7 +55,6 @@ export function useBuildWithSteps(jobName: string, buildNumber: string) {
   return [
     { loading, value, retry },
     {
-      restartBuild,
       getBuildWithSteps,
       startPolling,
       stopPolling,