diff --git a/docker-compose.yml b/docker-compose.yml
index aa46392887..9df4a80fea 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -95,6 +95,7 @@ services:
       SEQUENCING_LOCAL_STORE: /usr/src/app/sequencing_file_store
       SEQUENCING_WORKER_NUM: 8
       SEQUENCING_MAX_WORKER_HEAP_MB: 1000
+      TRANSPILER_ENABLED : "true"
     image: aerie_sequencing
     ports: ["27184:27184"]
     restart: always
diff --git a/sequencing-server/src/app.ts b/sequencing-server/src/app.ts
index dd1370f406..975259333f 100644
--- a/sequencing-server/src/app.ts
+++ b/sequencing-server/src/app.ts
@@ -27,6 +27,7 @@ import { getHasuraSession, canUserPerformAction, ENDPOINTS_WHITELIST } from './u
 import type { Result } from '@nasa-jpl/aerie-ts-user-code-runner/build/utils/monads';
 import type { CacheItem, UserCodeError } from '@nasa-jpl/aerie-ts-user-code-runner';
 import { PromiseThrottler } from './utils/PromiseThrottler.js';
+import { backgroundTranspiler } from './backgroundTranspiler.js';
 
 const logger = getLogger('app');
 
@@ -39,7 +40,9 @@ app.use(bodyParser.json({ limit: '100mb' }));
 
 DbExpansion.init();
 export const db = DbExpansion.getDb();
-
+export let graphqlClient = new GraphQLClient(getEnv().MERLIN_GRAPHQL_URL, {
+  headers: { 'x-hasura-admin-secret': getEnv().HASURA_GRAPHQL_ADMIN_SECRET },
+});
 export const piscina = new Piscina({
   filename: new URL('worker.js', import.meta.url).pathname,
   minThreads: parseInt(getEnv().SEQUENCING_WORKER_NUM),
@@ -62,10 +65,6 @@ export type Context = {
 };
 
 app.use(async (req: Request, res: Response, next: NextFunction) => {
-  const graphqlClient = new GraphQLClient(getEnv().MERLIN_GRAPHQL_URL, {
-    headers: { 'x-hasura-admin-secret': getEnv().HASURA_GRAPHQL_ADMIN_SECRET },
-  });
-
   // Check and make sure the user making the request has the required permissions.
   if (
     !ENDPOINTS_WHITELIST.has(req.url) &&
@@ -247,4 +246,30 @@ app.listen(PORT, () => {
   logger.info(`Worker pool initialized:
               Total workers started: ${piscina.threads.length},
               Heap Size per Worker: ${getEnv().SEQUENCING_MAX_WORKER_HEAP_MB} MB`);
+
+  if (getEnv().TRANSPILER_ENABLED === 'true') {
+    //log that the tranpiler is on
+    logger.info(`Background Transpiler is 'on'`);
+
+    let transpilerPromise: Promise<void> | undefined; // Holds the transpilation promise
+    async function invokeTranspiler() {
+      try {
+        await backgroundTranspiler();
+      } catch (error) {
+        console.error('Error during transpilation:', error);
+      } finally {
+        transpilerPromise = undefined; // Reset promise after completion
+      }
+    }
+
+    // Immediately call the background transpiler
+    transpilerPromise = invokeTranspiler();
+
+    // Schedule next execution after 2 minutes, handling ongoing transpilation
+    setInterval(async () => {
+      if (!transpilerPromise) {
+        transpilerPromise = invokeTranspiler(); // Start a new transpilation
+      }
+    }, 60 * 2 * 1000);
+  }
 });
diff --git a/sequencing-server/src/backgroundTranspiler.ts b/sequencing-server/src/backgroundTranspiler.ts
new file mode 100644
index 0000000000..f78863f882
--- /dev/null
+++ b/sequencing-server/src/backgroundTranspiler.ts
@@ -0,0 +1,143 @@
+import { piscina, graphqlClient, typeCheckingCache, promiseThrottler } from './app.js';
+import { objectCacheKeyFunction } from './lib/batchLoaders/index.js';
+import crypto from 'crypto';
+import { generateTypescriptForGraphQLActivitySchema } from './lib/codegen/ActivityTypescriptCodegen.js';
+import DataLoader from 'dataloader';
+import { activitySchemaBatchLoader } from './lib/batchLoaders/activitySchemaBatchLoader.js';
+import { commandDictionaryTypescriptBatchLoader } from './lib/batchLoaders/commandDictionaryTypescriptBatchLoader.js';
+import type { typecheckExpansion } from './worker';
+import { Result } from '@nasa-jpl/aerie-ts-user-code-runner/build/utils/monads.js';
+import { getLatestCommandDictionary, getLatestMissionModel, getExpansionRule } from './utils/hasura.js';
+
+export async function backgroundTranspiler(numberOfThreads: number = 2) {
+  if (graphqlClient === null) {
+    return;
+  }
+
+  // Fetch latest mission model
+  const { mission_model_aggregate } = await getLatestMissionModel(graphqlClient);
+  if (!mission_model_aggregate) {
+    console.log(
+      '[ Background Transpiler ] Unable to fetch the latest mission model. Aborting background transpiling...',
+    );
+    return;
+  }
+
+  // Fetch latest command dictionary
+  const { command_dictionary_aggregate } = await getLatestCommandDictionary(graphqlClient);
+  if (!command_dictionary_aggregate) {
+    console.log(
+      '[ Background Transpiler ] Unable to fetch the latest command dictionary. Aborting background transpiling...',
+    );
+    return;
+  }
+
+  const commandDictionaryId = command_dictionary_aggregate.aggregate.max.id;
+  const missionModelId = mission_model_aggregate.aggregate.max.id;
+  const { expansion_rule } = await getExpansionRule(graphqlClient, missionModelId, commandDictionaryId);
+
+  if (expansion_rule === null || expansion_rule.length === 0) {
+    console.log(`[ Background Transpiler ] No expansion rules to transpile.`);
+    return;
+  }
+
+  const commandTypescriptDataLoader = new DataLoader(commandDictionaryTypescriptBatchLoader({ graphqlClient }), {
+    cacheKeyFn: objectCacheKeyFunction,
+    name: null,
+  });
+  const activitySchemaDataLoader = new DataLoader(activitySchemaBatchLoader({ graphqlClient }), {
+    cacheKeyFn: objectCacheKeyFunction,
+    name: null,
+  });
+
+  const commandTypes = await commandTypescriptDataLoader.load({
+    dictionaryId: missionModelId,
+  });
+
+  if (commandTypes === null) {
+    console.log(`[ Background Transpiler ] Unable to fetch command ts lib.
+    Aborting transpiling...`);
+    return;
+  }
+
+  // only process 'numberOfThreads' worth at a time ex. transpile 2 logics at a time
+  // This allows for expansion set and sequence expansion to utilize the remaining workers
+  for (let i = 0; i < expansion_rule.length; i += numberOfThreads) {
+    await Promise.all(
+      expansion_rule.slice(i, i + numberOfThreads).map(async expansion => {
+        await promiseThrottler.run(async () => {
+          // Assuming expansion_rule elements have the same type
+          if (expansion instanceof Error) {
+            console.log(`[ Background Transpiler ] Expansion: ${expansion.name} could not be loaded`, expansion);
+            return Promise.reject(`Expansion: ${expansion.name} could not be loaded`);
+          }
+
+          const hash = crypto
+            .createHash('sha256')
+            .update(
+              JSON.stringify({
+                commandDictionaryId,
+                missionModelId,
+                id: expansion.id,
+                expansionLogic: expansion.expansion_logic,
+                activityType: expansion.activity_type,
+              }),
+            )
+            .digest('hex');
+
+          // ignore already transpiled hash info
+          if (typeCheckingCache.has(hash)) {
+            return Promise.resolve();
+          }
+
+          const activitySchema = await activitySchemaDataLoader.load({
+            missionModelId,
+            activityTypeName: expansion.activity_type,
+          });
+
+          // log error
+          if (!activitySchema) {
+            console.log(
+              `[ Background Transpiler ] Activity schema for ${expansion.activity_type} could not be loaded`,
+              activitySchema,
+            );
+            return Promise.reject('Activity schema for ${expansion.activity_type} could not be loaded');
+          }
+
+          const activityTypescript = generateTypescriptForGraphQLActivitySchema(activitySchema);
+
+          // log error
+          if (!activityTypescript) {
+            console.log(
+              `[ Background Transpiler ] Unable to generate typescript for activity ${expansion.activity_type}`,
+              activityTypescript,
+            );
+            return Promise.reject(`Unable to generate typescript for activity ${expansion.activity_type}`);
+          }
+
+          const typecheckingResult = (
+            piscina.run(
+              {
+                expansionLogic: expansion.expansion_logic,
+                commandTypes: commandTypes,
+                activityTypes: activityTypescript,
+                activityTypeName: expansion.activity_type,
+              },
+              { name: 'typecheckExpansion' },
+            ) as ReturnType<typeof typecheckExpansion>
+          ).then(Result.fromJSON);
+
+          //Display any errors
+          typecheckingResult.then(result => {
+            if (result.isErr()) {
+              console.log(`Error transpiling ${expansion.activity_type}:\n ${result.unwrapErr().map(e => e.message)}`);
+            }
+          });
+
+          typeCheckingCache.set(hash, typecheckingResult);
+          return typecheckingResult;
+        });
+      }),
+    );
+  }
+}
diff --git a/sequencing-server/src/env.ts b/sequencing-server/src/env.ts
index ee8564799f..0f2d5e8c06 100644
--- a/sequencing-server/src/env.ts
+++ b/sequencing-server/src/env.ts
@@ -12,6 +12,7 @@ export type Env = {
   STORAGE: string;
   SEQUENCING_WORKER_NUM: string;
   SEQUENCING_MAX_WORKER_HEAP_MB: string;
+  TRANSPILER_ENABLED: string;
 };
 
 export const defaultEnv: Env = {
@@ -28,6 +29,7 @@ export const defaultEnv: Env = {
   STORAGE: 'sequencing_file_store',
   SEQUENCING_WORKER_NUM: '8',
   SEQUENCING_MAX_WORKER_HEAP_MB: '1000',
+  TRANSPILER_ENABLED: 'true',
 };
 
 export function getEnv(): Env {
@@ -47,6 +49,7 @@ export function getEnv(): Env {
   const SEQUENCING_WORKER_NUM = env['SEQUENCING_WORKER_NUM'] ?? defaultEnv.SEQUENCING_WORKER_NUM;
   const SEQUENCING_MAX_WORKER_HEAP_MB =
     env['SEQUENCING_MAX_WORKER_HEAP_MB'] ?? defaultEnv.SEQUENCING_MAX_WORKER_HEAP_MB;
+  const TRANSPILER_ENABLED = env['TRANSPILER_ENABLED'] ?? defaultEnv.TRANSPILER_ENABLED;
   return {
     HASURA_GRAPHQL_ADMIN_SECRET,
     LOG_FILE,
@@ -61,5 +64,6 @@ export function getEnv(): Env {
     STORAGE,
     SEQUENCING_WORKER_NUM,
     SEQUENCING_MAX_WORKER_HEAP_MB,
+    TRANSPILER_ENABLED,
   };
 }
diff --git a/sequencing-server/src/utils/hasura.ts b/sequencing-server/src/utils/hasura.ts
index 8b92280007..29beeb6f58 100644
--- a/sequencing-server/src/utils/hasura.ts
+++ b/sequencing-server/src/utils/hasura.ts
@@ -32,7 +32,7 @@ export const ENDPOINTS_WHITELIST = new Set([
   '/seqjson/get-seqjson-for-sequence-standalone',
   '/seqjson/get-seqjson-for-seqid-and-simulation-dataset',
   '/seqjson/bulk-get-edsl-for-seqjson',
-  '/seqjson/get-edsl-for-seqjson'
+  '/seqjson/get-edsl-for-seqjson',
 ]);
 
 /**
@@ -368,3 +368,97 @@ async function getMissionModelId(
 
   return missionModelId;
 }
+
+export async function getLatestMissionModel(graphqlClient: GraphQLClient): Promise<{
+  mission_model_aggregate: {
+    aggregate: {
+      max: {
+        id: number;
+      };
+    };
+  };
+}> {
+  return graphqlClient.request<{
+    mission_model_aggregate: {
+      aggregate: {
+        max: {
+          id: number;
+        };
+      };
+    };
+  }>(
+    gql`
+      query GetLatestMissionModel {
+        mission_model_aggregate(order_by: { uploaded_file: { modified_date: asc } }) {
+          aggregate {
+            max {
+              id
+            }
+          }
+        }
+      }
+    `,
+  );
+}
+
+export async function getLatestCommandDictionary(graphqlClient: GraphQLClient): Promise<{
+  command_dictionary_aggregate: {
+    aggregate: {
+      max: {
+        id: number;
+      };
+    };
+  };
+}> {
+  return graphqlClient.request<{
+    command_dictionary_aggregate: {
+      aggregate: {
+        max: {
+          id: number;
+        };
+      };
+    };
+  }>(
+    gql`
+      query GetLatestCommandDictionary {
+        command_dictionary_aggregate(order_by: { created_at: asc }) {
+          aggregate {
+            max {
+              id
+            }
+          }
+        }
+      }
+    `,
+  );
+}
+
+export async function getExpansionRule(
+  graphqlClient: GraphQLClient,
+  missionModelId: number,
+  commandDictionaryId: number,
+): Promise<{
+  expansion_rule: {
+    id: number;
+    activity_type: string;
+    expansion_logic: string;
+  }[];
+}> {
+  return graphqlClient.request<{
+    expansion_rule: {
+      id: number;
+      activity_type: string;
+      expansion_logic: string;
+    }[];
+  }>(
+    gql`
+        query GetExpansonLogic {
+          expansion_rule(where: {authoring_command_dict_id: {_eq: ${missionModelId}}, authoring_mission_model_id: {_eq: ${commandDictionaryId} }}) {
+            id
+            activity_type
+            expansion_logic
+          }
+        }
+      `,
+  );
+}