diff --git a/internal/nomad/executor_api_mock.go b/internal/nomad/executor_api_mock.go
index 852dca4..0e21ed3 100644
--- a/internal/nomad/executor_api_mock.go
+++ b/internal/nomad/executor_api_mock.go
@@ -8,6 +8,8 @@ import (
 	api "github.com/hashicorp/nomad/api"
 	config "github.com/openHPI/poseidon/internal/config"
 
+	dto "github.com/openHPI/poseidon/pkg/dto"
+
 	io "io"
 
 	mock "github.com/stretchr/testify/mock"
@@ -187,13 +189,13 @@ func (_m *ExecutorAPIMock) LoadJobList() ([]*api.JobListStub, error) {
 	return r0, r1
 }
 
-// LoadRunnerIDs provides a mock function with given fields: environmentID
-func (_m *ExecutorAPIMock) LoadRunnerIDs(environmentID string) ([]string, error) {
-	ret := _m.Called(environmentID)
+// LoadRunnerIDs provides a mock function with given fields: prefix
+func (_m *ExecutorAPIMock) LoadRunnerIDs(prefix string) ([]string, error) {
+	ret := _m.Called(prefix)
 
 	var r0 []string
 	if rf, ok := ret.Get(0).(func(string) []string); ok {
-		r0 = rf(environmentID)
+		r0 = rf(prefix)
 	} else {
 		if ret.Get(0) != nil {
 			r0 = ret.Get(0).([]string)
@@ -202,7 +204,7 @@ func (_m *ExecutorAPIMock) LoadRunnerIDs(environmentID string) ([]string, error)
 
 	var r1 error
 	if rf, ok := ret.Get(1).(func(string) error); ok {
-		r1 = rf(environmentID)
+		r1 = rf(prefix)
 	} else {
 		r1 = ret.Error(1)
 	}
@@ -211,11 +213,11 @@ func (_m *ExecutorAPIMock) LoadRunnerIDs(environmentID string) ([]string, error)
 }
 
 // LoadRunnerJobs provides a mock function with given fields: environmentID
-func (_m *ExecutorAPIMock) LoadRunnerJobs(environmentID string) ([]*api.Job, error) {
+func (_m *ExecutorAPIMock) LoadRunnerJobs(environmentID dto.EnvironmentID) ([]*api.Job, error) {
 	ret := _m.Called(environmentID)
 
 	var r0 []*api.Job
-	if rf, ok := ret.Get(0).(func(string) []*api.Job); ok {
+	if rf, ok := ret.Get(0).(func(dto.EnvironmentID) []*api.Job); ok {
 		r0 = rf(environmentID)
 	} else {
 		if ret.Get(0) != nil {
@@ -224,7 +226,7 @@ func (_m *ExecutorAPIMock) LoadRunnerJobs(environmentID string) ([]*api.Job, err
 	}
 
 	var r1 error
-	if rf, ok := ret.Get(1).(func(string) error); ok {
+	if rf, ok := ret.Get(1).(func(dto.EnvironmentID) error); ok {
 		r1 = rf(environmentID)
 	} else {
 		r1 = ret.Error(1)
diff --git a/internal/nomad/nomad.go b/internal/nomad/nomad.go
index 6fc225b..b00b51b 100644
--- a/internal/nomad/nomad.go
+++ b/internal/nomad/nomad.go
@@ -7,6 +7,7 @@ import (
 	nomadApi "github.com/hashicorp/nomad/api"
 	"github.com/hashicorp/nomad/nomad/structs"
 	"github.com/openHPI/poseidon/internal/config"
+	"github.com/openHPI/poseidon/pkg/dto"
 	"github.com/openHPI/poseidon/pkg/logging"
 	"github.com/openHPI/poseidon/pkg/nullio"
 	"io"
@@ -33,11 +34,11 @@ type ExecutorAPI interface {
 	LoadEnvironmentJobs() ([]*nomadApi.Job, error)
 
 	// LoadRunnerJobs loads all runner jobs specific for the environment.
-	LoadRunnerJobs(environmentID string) ([]*nomadApi.Job, error)
+	LoadRunnerJobs(environmentID dto.EnvironmentID) ([]*nomadApi.Job, error)
 
-	// LoadRunnerIDs returns the IDs of all runners of the specified environment which are running and not about to
+	// LoadRunnerIDs returns the IDs of all runners with the specified id prefix which are running and not about to
 	// get stopped.
-	LoadRunnerIDs(environmentID string) (runnerIds []string, err error)
+	LoadRunnerIDs(prefix string) (runnerIds []string, err error)
 
 	// LoadRunnerPortMappings returns the mapped ports of the runner.
 	LoadRunnerPortMappings(runnerID string) ([]nomadApi.PortMapping, error)
@@ -88,8 +89,8 @@ func (a *APIClient) init(nomadConfig *config.Nomad) error {
 	return nil
 }
 
-func (a *APIClient) LoadRunnerIDs(environmentID string) (runnerIDs []string, err error) {
-	list, err := a.listJobs(environmentID)
+func (a *APIClient) LoadRunnerIDs(prefix string) (runnerIDs []string, err error) {
+	list, err := a.listJobs(prefix)
 	if err != nil {
 		return nil, err
 	}
@@ -113,8 +114,8 @@ func (a *APIClient) LoadRunnerPortMappings(runnerID string) ([]nomadApi.PortMapp
 	return alloc.AllocatedResources.Shared.Ports, nil
 }
 
-func (a *APIClient) LoadRunnerJobs(environmentID string) ([]*nomadApi.Job, error) {
-	runnerIDs, err := a.LoadRunnerIDs(environmentID)
+func (a *APIClient) LoadRunnerJobs(environmentID dto.EnvironmentID) ([]*nomadApi.Job, error) {
+	runnerIDs, err := a.LoadRunnerIDs(RunnerJobID(environmentID, ""))
 	if err != nil {
 		return []*nomadApi.Job{}, fmt.Errorf("couldn't load jobs: %w", err)
 	}
diff --git a/internal/runner/manager.go b/internal/runner/manager.go
index 983c673..6b52de0 100644
--- a/internal/runner/manager.go
+++ b/internal/runner/manager.go
@@ -184,7 +184,7 @@ func (m *NomadRunnerManager) Return(r Runner) error {
 func (m *NomadRunnerManager) Load() {
 	for _, environment := range m.environments.List() {
 		environmentLogger := log.WithField("environmentID", environment.ID())
-		runnerJobs, err := m.apiClient.LoadRunnerJobs(environment.ID().ToString())
+		runnerJobs, err := m.apiClient.LoadRunnerJobs(environment.ID())
 		if err != nil {
 			environmentLogger.WithError(err).Warn("Error fetching the runner jobs")
 		}