diff --git a/frontend/unified/src/App.tsx b/frontend/unified/src/App.tsx
index fa35407..015dc09 100644
--- a/frontend/unified/src/App.tsx
+++ b/frontend/unified/src/App.tsx
@@ -76,6 +76,7 @@ export const SESSION_QUERY: TypedDocumentNode<
               instrument {
                 name
               }
+              startTime
             }
           }
         }
@@ -299,6 +300,9 @@ export const App: React.FC = () => {
                 Technique[currentTechnique as keyof typeof Technique]
               )}
               visit={selectedVisit}
+              beamline={beamline}
+              startTime={session.startTime}
+              scanIds={selectedScanIds}
             />
           </Stack>
           <Stack spacing={VERTICAL_SPACING} width="500px">
diff --git a/frontend/unified/src/components/ParameterConfiguration/ParameterConfiguration.tsx b/frontend/unified/src/components/ParameterConfiguration/ParameterConfiguration.tsx
index 8f39934..f955b81 100644
--- a/frontend/unified/src/components/ParameterConfiguration/ParameterConfiguration.tsx
+++ b/frontend/unified/src/components/ParameterConfiguration/ParameterConfiguration.tsx
@@ -1,5 +1,5 @@
 import { Button, Typography } from "@mui/material";
-import { Option, Technique } from "../../types";
+import { Beamline, Option, Technique } from "../../types";
 import OptionSelect from "../OptionSelect";
 import { CorSweepParameterConfiguration } from "./TomoParameterConfiguration";
 import { PtyrexParameterConfiguration } from "./PtyrexParameterConfiguration";
@@ -7,7 +7,8 @@ import { ReactElement, useState } from "react";
 import { LoaderProvider } from "../../../../tomography/src/contexts/LoaderContext";
 import { SUBMIT_WORKFLOW_TEMPLATE } from "../../../../tomography/src/components/workflows/Submission";
 import { useMutation } from "@apollo/client/react";
-import { Visit } from "@diamondlightsource/sci-react-ui";
+import { Visit, visitToText } from "@diamondlightsource/sci-react-ui";
+import { InstrumentSession } from "../SessionSelector";
 
 type ParameterConfigurationProps = {
   technique: Technique;
@@ -15,6 +16,9 @@ type ParameterConfigurationProps = {
   setTemplate: (_: string) => void;
   availableTemplates: Option[];
   visit: Visit;
+  beamline: Beamline;
+  startTime: InstrumentSession["startTime"];
+  scanIds: number[];
 };
 
 /**
@@ -28,9 +32,27 @@ type TemplateComponentMapping = {
   };
 };
 
-// TODO: The filename part of this should come from the scan selector component
-const HARDCODED_INPUT_FILEPATH =
-  "/dls/i12/data/2025/cm40628-3/rawdata/188700.nxs";
+const DLS_FILESYSTEM_BEAMLINE_RAW_DATA_DIR_MAPPINGS = {
+  [Beamline.DIAD]: "nexus",
+  [Beamline["I08-1"]]: "nexus",
+  [Beamline.I12]: "rawdata",
+  [Beamline["I13-1"]]: "raw",
+  [Beamline["I13-2"]]: "raw",
+  [Beamline.I14]: "scan",
+};
+
+const determineBeamlineRawDataFilepath = (
+  beamline: Beamline,
+  year: string,
+  visit: Visit,
+  scanId: number
+): string => {
+  const rawDataDirname =
+    DLS_FILESYSTEM_BEAMLINE_RAW_DATA_DIR_MAPPINGS[
+      beamline as keyof typeof DLS_FILESYSTEM_BEAMLINE_RAW_DATA_DIR_MAPPINGS
+    ];
+  return `/dls/${beamline}/data/${year}/${visitToText(visit)}/${rawDataDirname}/${scanId}.nxs`;
+};
 
 export const ParameterConfiguration: React.FC<ParameterConfigurationProps> = ({
   technique,
@@ -38,6 +60,9 @@ export const ParameterConfiguration: React.FC<ParameterConfigurationProps> = ({
   setTemplate,
   availableTemplates,
   visit,
+  beamline,
+  startTime,
+  scanIds,
 }: ParameterConfigurationProps) => {
   const [templateParameters, setTemplateParameters] = useState<object>({});
   const [resourceParameters] = useState({
@@ -47,12 +72,20 @@ export const ParameterConfiguration: React.FC<ParameterConfigurationProps> = ({
 
   const [mutation] = useMutation(SUBMIT_WORKFLOW_TEMPLATE);
 
+  const sessionYear = new Date(startTime).getFullYear();
+  const rawDataFilepath = determineBeamlineRawDataFilepath(
+    beamline,
+    sessionYear,
+    visit,
+    scanIds[0]
+  );
+
   const handleSubmitJob = () => {
     // TODO: Validate parameters against JSON schema attached to the workflow template before
     // sending the mutation
     console.log("Submit job");
     const parameters = {
-      input: HARDCODED_INPUT_FILEPATH,
+      input: rawDataFilepath,
       ...templateParameters,
       ...resourceParameters,
     };
diff --git a/frontend/unified/src/components/SessionSelector.tsx b/frontend/unified/src/components/SessionSelector.tsx
index a09dfbd..e5bbcf5 100644
--- a/frontend/unified/src/components/SessionSelector.tsx
+++ b/frontend/unified/src/components/SessionSelector.tsx
@@ -30,6 +30,7 @@ export const GET_SESSION_BY_REFERENCE: TypedDocumentNode<
         proposalNumber
         proposalCategory
       }
+      startTime
     }
   }
 `;
diff --git a/frontend/unified/src/types.ts b/frontend/unified/src/types.ts
index e90c2c5..49d6c07 100644
--- a/frontend/unified/src/types.ts
+++ b/frontend/unified/src/types.ts
@@ -8,14 +8,18 @@ export enum Technique {
   Xrd = "Xrd",
 }
 
+/**
+ * String representations of a beamline is how the beamline is represented in the DLS
+ * filesystem
+ */
 export enum Beamline {
-  DIAD,
-  "I08-1",
-  I12,
-  "I13-1",
-  "I13-2",
-  I14,
-  Epsic,
+  DIAD = "k11",
+  "I08-1" = "i08-1",
+  I12 = "i12",
+  "I13-1" = "i13-1",
+  "I13-2" = "i13-2",
+  I14 = "i14",
+  Epsic = "e01",
 }
 
 export type Option = { label: string; value: string; desc?: string };