diff --git a/nemesis.yml b/nemesis.yml
new file mode 100644
index 00000000..9116d32f
--- /dev/null
+++ b/nemesis.yml
@@ -0,0 +1,8 @@
+paths:
+  code:
+    "src/": ""
+  tests:
+    "tests/": tests\
+phpunit:
+  base_namespace: tests
+  base_test_class_name: PHPUnit_Framework_TestCase
diff --git a/spec/NullDev/Nemesis/Config/ConfigFactorySpec.php b/spec/NullDev/Nemesis/Config/ConfigFactorySpec.php
new file mode 100644
index 00000000..7a369241
--- /dev/null
+++ b/spec/NullDev/Nemesis/Config/ConfigFactorySpec.php
@@ -0,0 +1,34 @@
+<?php
+
+declare(strict_types=1);
+
+namespace spec\NullDev\Nemesis\Config;
+
+use NullDev\Nemesis\Config\Config;
+use NullDev\Nemesis\Config\ConfigFactory;
+use PhpSpec\ObjectBehavior;
+
+class ConfigFactorySpec extends ObjectBehavior
+{
+    public function let()
+    {
+        $input = [
+            'paths' => [
+                'code'  => ['src/' => ''],
+                'tests' => ['tests/' => 'tests\\'],
+            ],
+        ];
+        $this->beConstructedWith($input);
+    }
+
+    public function it_is_initializable()
+    {
+        $this->shouldHaveType(ConfigFactory::class);
+    }
+
+    public function it_will_create_config_file()
+    {
+        $this->create()
+            ->shouldReturnAnInstanceOf(Config::class);
+    }
+}
diff --git a/spec/NullDev/Nemesis/Config/ConfigSpec.php b/spec/NullDev/Nemesis/Config/ConfigSpec.php
new file mode 100644
index 00000000..39892aa4
--- /dev/null
+++ b/spec/NullDev/Nemesis/Config/ConfigSpec.php
@@ -0,0 +1,35 @@
+<?php
+
+declare(strict_types=1);
+
+namespace spec\NullDev\Nemesis\Config;
+
+use NullDev\Nemesis\Config\Config;
+use NullDev\Skeleton\Path\Psr4Path;
+use NullDev\Skeleton\Path\TestPsr4Path;
+use PhpSpec\ObjectBehavior;
+
+class ConfigSpec extends ObjectBehavior
+{
+    public function let(Psr4Path $psr4Path, TestPsr4Path $testPsr4Path)
+    {
+        $this->beConstructedWith([$psr4Path], [$testPsr4Path], 'tests', 'PHPUnit_Framework_TestCase');
+    }
+
+    public function it_is_initializable()
+    {
+        $this->shouldHaveType(Config::class);
+    }
+
+    public function it_exposes_source_code_paths(Psr4Path $psr4Path)
+    {
+        $this->getSourceCodePaths()
+            ->shouldReturn([$psr4Path]);
+    }
+
+    public function it_exposes_test_paths(TestPsr4Path $testPsr4Path)
+    {
+        $this->getTestPaths()
+            ->shouldReturn([$testPsr4Path]);
+    }
+}
diff --git a/src/NullDev/Nemesis/Config/Config.php b/src/NullDev/Nemesis/Config/Config.php
new file mode 100644
index 00000000..63c4646a
--- /dev/null
+++ b/src/NullDev/Nemesis/Config/Config.php
@@ -0,0 +1,68 @@
+<?php
+
+declare(strict_types=1);
+
+namespace NullDev\Nemesis\Config;
+
+use NullDev\Skeleton\Path\Psr4Path;
+use NullDev\Skeleton\Path\TestPsr4Path;
+use Webmozart\Assert\Assert;
+
+/**
+ * @see ConfigSpec
+ * @see ConfigTest
+ */
+class Config
+{
+    /** @var array */
+    private $sourceCodePaths = [];
+
+    /** @var array */
+    private $testPaths = [];
+
+    /** @var string */
+    private $testsNamespace;
+
+    /** @var string */
+    private $baseTestClassName;
+
+    public function __construct(
+        array $sourceCodePaths,
+        array $testPaths,
+        string $testsNamespace,
+        string $baseTestClassName
+    ) {
+        Assert::allIsInstanceOf($sourceCodePaths, Psr4Path::class);
+        Assert::allIsInstanceOf($testPaths, TestPsr4Path::class);
+
+        $this->sourceCodePaths   = $sourceCodePaths;
+        $this->testPaths         = $testPaths;
+        $this->testsNamespace    = $testsNamespace;
+        $this->baseTestClassName = $baseTestClassName;
+    }
+
+    public function getSourceCodePaths(): array
+    {
+        return $this->sourceCodePaths;
+    }
+
+    public function getTestPaths(): array
+    {
+        return $this->testPaths;
+    }
+
+    public function getPaths(): array
+    {
+        return array_merge($this->testPaths, $this->sourceCodePaths);
+    }
+
+    public function getTestsNamespace(): string
+    {
+        return $this->testsNamespace;
+    }
+
+    public function getBaseTestClassName(): string
+    {
+        return $this->baseTestClassName;
+    }
+}
diff --git a/src/NullDev/Nemesis/Config/ConfigFactory.php b/src/NullDev/Nemesis/Config/ConfigFactory.php
new file mode 100644
index 00000000..8fd817de
--- /dev/null
+++ b/src/NullDev/Nemesis/Config/ConfigFactory.php
@@ -0,0 +1,98 @@
+<?php
+
+declare(strict_types=1);
+
+namespace NullDev\Nemesis\Config;
+
+use NullDev\Skeleton\Path\Psr4Path;
+use NullDev\Skeleton\Path\TestPsr4Path;
+use Symfony\Component\Yaml\Yaml;
+use Webmozart\Assert\Assert;
+
+/**
+ * @see ConfigFactorySpec
+ * @see ConfigFactoryTest
+ */
+class ConfigFactory
+{
+    /** @var array */
+    private $sourceCodePaths = [];
+    /** @var array */
+    private $testPaths = [];
+    /** @var string */
+    private $phpunitBaseNamespace;
+    /** @var string */
+    private $phpunitBaseTestClassName;
+
+    public function __construct()
+    {
+        $path          = getcwd().'/nemesis.yml';
+        $defaultConfig = $this->getDefaultConfig();
+
+        if (false === is_file($path)) {
+            $config = $defaultConfig;
+        } else {
+            $config = array_merge($defaultConfig, Yaml::parse(file_get_contents($path)));
+        }
+
+        Assert::isArray($config['paths']['code']);
+        Assert::isArray($config['paths']['tests']);
+
+        foreach ($config['paths']['code'] as $path => $namespacePrefix) {
+            $this->sourceCodePaths[] = new Psr4Path($path, $namespacePrefix);
+        }
+        foreach ($config['paths']['tests'] as $path => $namespacePrefix) {
+            $this->testPaths[] = new TestPsr4Path($path, $namespacePrefix);
+        }
+        $this->phpunitBaseNamespace     = $config['phpunit']['base_namespace'];
+        $this->phpunitBaseTestClassName = $config['phpunit']['base_test_class_name'];
+    }
+
+    public function create(): Config
+    {
+        return new Config(
+            $this->getSourceCodePaths(),
+            $this->getTestPaths(),
+            $this->getPhpunitBaseNamespace(),
+            $this->getPhpunitBaseTestClassName()
+        );
+    }
+
+    private function getDefaultConfig()
+    {
+        return [
+            'paths'   => [
+                'code'  => [
+                    'src/' => '',
+                ],
+                'tests' => [
+                    'tests/' => 'tests\\',
+                ],
+            ],
+            'phpunit' => [
+                'base_namespace'       => 'tests',
+                'base_test_class_name' => 'PHPUnit_Framework_TestCase',
+            ],
+        ];
+    }
+
+    private function getSourceCodePaths(): array
+    {
+        return $this->sourceCodePaths;
+    }
+
+    private function getTestPaths(): array
+    {
+        return $this->testPaths;
+    }
+
+    private function getPhpunitBaseNamespace(): string
+    {
+        return $this->phpunitBaseNamespace;
+    }
+
+    private function getPhpunitBaseTestClassName(): string
+    {
+        return $this->phpunitBaseTestClassName;
+    }
+}
diff --git a/src/NullDev/Nemesis/services.yml b/src/NullDev/Nemesis/services.yml
index c579836b..21712df9 100644
--- a/src/NullDev/Nemesis/services.yml
+++ b/src/NullDev/Nemesis/services.yml
@@ -3,3 +3,10 @@ services:
     autowire: true
     autoconfigure: true
     public: true
+
+  NullDev\Nemesis\Config\ConfigFactory: ~
+
+  NullDev\Nemesis\Config\Config:
+    class: NullDev\Nemesis\Config\Config
+    factory: ['@NullDev\Nemesis\Config\ConfigFactory', create]
+
diff --git a/tests/NullDev/Nemesis/Config/ConfigFactoryTest.php b/tests/NullDev/Nemesis/Config/ConfigFactoryTest.php
new file mode 100644
index 00000000..574395e7
--- /dev/null
+++ b/tests/NullDev/Nemesis/Config/ConfigFactoryTest.php
@@ -0,0 +1,29 @@
+<?php
+
+declare(strict_types=1);
+
+namespace tests\NullDev\Nemesis\Config;
+
+use NullDev\Nemesis\Config\Config;
+use NullDev\Nemesis\Config\ConfigFactory;
+use tests\NullDev\ContainerSupportedTestCase;
+
+/**
+ * @covers \NullDev\Nemesis\Config\ConfigFactory
+ * @group  integration
+ */
+class ConfigFactoryTest extends ContainerSupportedTestCase
+{
+    /** @var ConfigFactory */
+    private $configFactory;
+
+    public function setUp(): void
+    {
+        $this->configFactory = $this->getService(ConfigFactory::class);
+    }
+
+    public function testItReturnsConfigOut(): void
+    {
+        self::assertInstanceOf(Config::class, $this->configFactory->create());
+    }
+}
diff --git a/tests/NullDev/Nemesis/Config/ConfigTest.php b/tests/NullDev/Nemesis/Config/ConfigTest.php
new file mode 100644
index 00000000..f7181901
--- /dev/null
+++ b/tests/NullDev/Nemesis/Config/ConfigTest.php
@@ -0,0 +1,64 @@
+<?php
+
+declare(strict_types=1);
+
+namespace tests\NullDev\Nemesis\Config;
+
+use NullDev\Nemesis\Config\Config;
+use NullDev\Skeleton\Path\Psr4Path;
+use NullDev\Skeleton\Path\TestPsr4Path;
+use PHPUnit_Framework_TestCase;
+use tests\NullDev\ContainerSupportedTestCase;
+
+/**
+ * @covers \NullDev\Nemesis\Config\Config
+ * @group  integration
+ */
+class ConfigTest extends ContainerSupportedTestCase
+{
+    /** @var Config */
+    private $config;
+
+    public function setUp(): void
+    {
+        $this->config = $this->getService(Config::class);
+    }
+
+    public function testGetSourceCodePaths(): void
+    {
+        $expected = [
+            new Psr4Path('src/', ''),
+        ];
+
+        self::assertEquals($expected, $this->config->getSourceCodePaths());
+    }
+
+    public function testGetTestPaths(): void
+    {
+        $expected = [
+            new TestPsr4Path('tests/', 'tests\\'),
+        ];
+
+        self::assertEquals($expected, $this->config->getTestPaths());
+    }
+
+    public function testGetPaths(): void
+    {
+        $expected = [
+            new TestPsr4Path('tests/', 'tests\\'),
+            new Psr4Path('src/', ''),
+        ];
+
+        self::assertEquals($expected, $this->config->getPaths());
+    }
+
+    public function testGetTestsNamespace(): void
+    {
+        self::assertEquals('tests', $this->config->getTestsNamespace());
+    }
+
+    public function testGetBaseTestClassName(): void
+    {
+        self::assertEquals('PHPUnit_Framework_TestCase', $this->config->getBaseTestClassName());
+    }
+}