diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index ce99fd5..4c6a71d 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -25,6 +25,7 @@ jobs:
         with:
           environments: dev
           pixi-version: v0.42.1
+          cache: true
 
       - name: Ruff Format
         if: always()
@@ -35,10 +36,11 @@ jobs:
         if: always()
         run: |
           pixi run --environment dev lint --diff
-      # - name: Mypy
-      #   if: always()
-      #   run: |
-      #     pixi run --environment dev type-check
+
+      - name: Mypy
+        if: always()
+        run: |
+          pixi run --environment dev type-check
 
       - name: Collect QC
         run: echo "All quality control checks passed"
@@ -53,6 +55,7 @@ jobs:
         with:
           environments: dev
           pixi-version: v0.42.1
+          cache: true
 
       - name: Run tests
         run: pixi run --environment dev test --show-capture=all -s -vv
diff --git a/snakemake_interface_executor_plugins/executors/base.py b/snakemake_interface_executor_plugins/executors/base.py
index 1f16f36..255e16d 100644
--- a/snakemake_interface_executor_plugins/executors/base.py
+++ b/snakemake_interface_executor_plugins/executors/base.py
@@ -21,13 +21,18 @@ class SubmittedJobInfo:
 
 
 class AbstractExecutor(ABC):
+    workflow: WorkflowExecutorInterface
+    logger: LoggerExecutorInterface
+
     def __init__(
         self,
         workflow: WorkflowExecutorInterface,
         logger: LoggerExecutorInterface,
     ):
         self.workflow = workflow
-        self.dag = workflow.dag
+        self.dag = (
+            workflow.dag
+        )  # we cant type annotate this because dag type is in snakemake
         self.logger = logger
 
     def get_resource_declarations_dict(self, job: JobExecutorInterface):
diff --git a/snakemake_interface_executor_plugins/executors/real.py b/snakemake_interface_executor_plugins/executors/real.py
index dabb9b7..2d2207c 100644
--- a/snakemake_interface_executor_plugins/executors/real.py
+++ b/snakemake_interface_executor_plugins/executors/real.py
@@ -4,13 +4,13 @@
 __license__ = "MIT"
 
 from abc import abstractmethod
-from typing import Dict
+from typing import Mapping
 from snakemake_interface_executor_plugins.executors.base import (
     AbstractExecutor,
     SubmittedJobInfo,
 )
 from snakemake_interface_executor_plugins.logging import LoggerExecutorInterface
-from snakemake_interface_executor_plugins.settings import ExecMode
+from snakemake_interface_executor_plugins.settings import ExecMode, ExecutorSettingsBase
 from snakemake_interface_executor_plugins.utils import (
     encode_target_jobs_cli_args,
     format_cli_arg,
@@ -21,6 +21,12 @@
 
 
 class RealExecutor(AbstractExecutor):
+    # Class attributes with type annotations
+    workflow: WorkflowExecutorInterface
+    logger: LoggerExecutorInterface
+    executor_settings: ExecutorSettingsBase
+    snakefile: str
+
     def __init__(
         self,
         workflow: WorkflowExecutorInterface,
@@ -176,5 +182,5 @@ def format_job_exec(self, job: JobExecutorInterface) -> str:
         )
         return args
 
-    def envvars(self) -> Dict[str, str]:
+    def envvars(self) -> Mapping[str, str]:
         return self.workflow.spawned_job_args_factory.envvars()
diff --git a/snakemake_interface_executor_plugins/executors/remote.py b/snakemake_interface_executor_plugins/executors/remote.py
index 74ef734..dabd69d 100644
--- a/snakemake_interface_executor_plugins/executors/remote.py
+++ b/snakemake_interface_executor_plugins/executors/remote.py
@@ -12,7 +12,7 @@
 import sys
 import tempfile
 import threading
-from typing import Generator, List
+from typing import Generator, List, Optional
 from snakemake_interface_common.exceptions import WorkflowError
 from snakemake_interface_executor_plugins.executors.base import SubmittedJobInfo
 from snakemake_interface_executor_plugins.executors.real import RealExecutor
@@ -36,7 +36,20 @@ class RemoteExecutor(RealExecutor, ABC):
     also for the cloud.
     """
 
-    default_jobscript = "jobscript.sh"
+    # Class attributes with type annotations
+    default_jobscript: str = "jobscript.sh"
+    _next_seconds_between_status_checks: Optional[int]
+    max_status_checks_per_second: float
+    jobname: str
+    snakefile: str
+    is_default_jobscript: bool
+    jobscript: str
+    _tmpdir: Optional[str]
+    active_jobs: List[SubmittedJobInfo]
+    lock: threading.Lock
+    wait: bool
+    wait_thread: threading.Thread
+    status_rate_limiter: Throttler
 
     def __init__(
         self,
@@ -118,7 +131,7 @@ def cancel_jobs(self, active_jobs: List[SubmittedJobInfo]):
         ...
 
     def get_exec_mode(self) -> ExecMode:
-        return ExecMode.REMOTE
+        return ExecMode.REMOTE  # type: ignore
 
     def get_python_executable(self):
         return (
@@ -128,7 +141,7 @@ def get_python_executable(self):
             else "python"
         )
 
-    def get_job_args(self, job: JobExecutorInterface):
+    def get_job_args(self, job: JobExecutorInterface, **kwargs):
         waitfiles_parameter = ""
         if SharedFSUsage.INPUT_OUTPUT in self.workflow.storage_settings.shared_fs_usage:
             wait_for_files = []
diff --git a/snakemake_interface_executor_plugins/jobs.py b/snakemake_interface_executor_plugins/jobs.py
index 8af4b2c..61b4338 100644
--- a/snakemake_interface_executor_plugins/jobs.py
+++ b/snakemake_interface_executor_plugins/jobs.py
@@ -5,9 +5,10 @@
 
 from abc import ABC, abstractmethod
 import sys
-from typing import Any, Iterable, Mapping, Optional, Sequence, Union
+from typing import Any, Iterable, Mapping, Optional, Sequence, Union, List
 
 from snakemake_interface_common.rules import RuleInterface
+from snakemake_interface_executor_plugins.utils import TargetSpec
 
 
 class JobExecutorInterface(ABC):
@@ -58,7 +59,7 @@ def output(self) -> Iterable[str]: ...
     def register(self, external_jobid: Optional[str] = None) -> None: ...
 
     @abstractmethod
-    def get_target_spec(self) -> str: ...
+    def get_target_spec(self) -> List[TargetSpec]: ...
 
     @abstractmethod
     def rules(self) -> Iterable[RuleInterface]: ...
diff --git a/snakemake_interface_executor_plugins/scheduler.py b/snakemake_interface_executor_plugins/scheduler.py
index b7a3843..a5ac324 100644
--- a/snakemake_interface_executor_plugins/scheduler.py
+++ b/snakemake_interface_executor_plugins/scheduler.py
@@ -4,8 +4,14 @@
 __license__ = "MIT"
 
 from abc import ABC, abstractmethod
+from typing import Callable
+from snakemake_interface_executor_plugins.jobs import JobExecutorInterface
 
 
 class JobSchedulerExecutorInterface(ABC):
+    submit_callback: Callable[[JobExecutorInterface], None]
+    finish_callback: Callable[[JobExecutorInterface], None]
+    error_callback: Callable[[JobExecutorInterface], None]
+
     @abstractmethod
     def executor_error_callback(self, exception: Exception) -> None: ...
diff --git a/snakemake_interface_executor_plugins/workflow.py b/snakemake_interface_executor_plugins/workflow.py
index 868d75d..9e7e65d 100644
--- a/snakemake_interface_executor_plugins/workflow.py
+++ b/snakemake_interface_executor_plugins/workflow.py
@@ -21,6 +21,7 @@
     GroupSettingsExecutorInterface,
     RemoteExecutionSettingsExecutorInterface,
     StorageSettingsExecutorInterface,
+    ExecutorSettingsBase,
 )
 
 
@@ -53,6 +54,10 @@ def group_settings(self) -> GroupSettingsExecutorInterface: ...
     @abstractmethod
     def executor_plugin(self) -> Optional[Plugin]: ...
 
+    @property
+    @abstractmethod
+    def executor_settings(self) -> ExecutorSettingsBase: ...
+
     @property
     @abstractmethod
     def resource_scopes(self): ...
@@ -72,3 +77,7 @@ def workdir_init(self): ...
     @property
     @abstractmethod
     def scheduler(self) -> JobSchedulerExecutorInterface: ...
+
+    @property
+    @abstractmethod
+    def dag(self): ...