diff --git a/common/common.proto b/common/common.proto
index f69ad38..503ccd5 100644
--- a/common/common.proto
+++ b/common/common.proto
@@ -36,6 +36,11 @@ enum Domain {
   DOMAIN_SUBMISSION = 10;
 }
 
+enum SortOrder {
+  ASC = 0;
+  DESC = 1;
+}
+
 message ScanCriteria {
   string key = 1;
   optional Operator operator = 2;
@@ -73,6 +78,28 @@ message LookupCriteria {
   google.protobuf.Value value = 3;
 }
 
+message GetRequest {
+  oneof id {
+    int64 integer_id = 1;
+    string string_id = 2;
+  }
+  repeated string attributes = 3;
+}
+
+message SearchRequest {
+  repeated SearchCriteria criteria = 1;
+  repeated string attributes = 2;
+  optional int32 page = 3;
+  optional int32 per_page = 4;
+  SortOrder sort_order = 5;
+  optional string sort_by = 6;
+}
+
+message SearchCriteria {
+  string key = 1;
+  google.protobuf.Value value = 2;
+}
+
 // TODO: There has to be a better way to do this.
 message GoogleProtobufTypesPlaceholder {
   google.protobuf.Timestamp timestamp = 1;
diff --git a/domain-layer/review/answer_type.proto b/domain-layer/review/answer_type.proto
new file mode 100644
index 0000000..18ca3d2
--- /dev/null
+++ b/domain-layer/review/answer_type.proto
@@ -0,0 +1,30 @@
+syntax = "proto3";
+
+package topcoder.domain.review.answertype;
+
+import "google/protobuf/timestamp.proto";
+
+option java_multiple_files = true;
+option java_package = "com.topcoder.domain.review.answertype";
+
+message AnswerType {
+  optional int64 id = 1;
+  string name = 2;
+  optional string description = 3;
+  repeated AnswerTypeValue answer_type_values = 4;
+  google.protobuf.Timestamp created_at = 5;
+  google.protobuf.Timestamp updated_at = 6;
+  int32 created_by = 7;
+  int32 updated_by = 8;
+}
+
+message AnswerTypeValue {
+  optional int64 id = 1;
+  string value = 2;
+  double weight = 3;
+  int32 display_order = 4;
+  google.protobuf.Timestamp created_at = 5;
+  google.protobuf.Timestamp updated_at = 6;
+  int32 created_by = 7;
+  int32 updated_by = 8;
+}
\ No newline at end of file
diff --git a/domain-layer/review/discussion.proto b/domain-layer/review/discussion.proto
new file mode 100644
index 0000000..2f53b02
--- /dev/null
+++ b/domain-layer/review/discussion.proto
@@ -0,0 +1,31 @@
+syntax = "proto3";
+
+package topcoder.domain.review.discussion;
+
+import "google/protobuf/timestamp.proto";
+
+option java_multiple_files = true;
+option java_package = "com.topcoder.domain.review.discussion";
+
+message Discussion {
+  optional int64 id = 1;
+  int64 score_id = 2;
+  optional int64 parent_id = 3;
+  int64 discussion_type_id = 4;
+  string text = 5;
+  optional string reference = 6;
+  google.protobuf.Timestamp created_at = 7;
+  google.protobuf.Timestamp updated_at = 8;
+  int32 created_by = 9;
+  int32 updated_by = 10;
+}
+
+message DiscussionType {
+  optional int64 id = 1;
+  string name = 2;
+  optional string description = 3;
+  google.protobuf.Timestamp created_at = 4;
+  google.protobuf.Timestamp updated_at = 5;
+  int32 created_by = 6;
+  int32 updated_by = 7;
+}
\ No newline at end of file
diff --git a/domain-layer/review/review.proto b/domain-layer/review/review.proto
new file mode 100644
index 0000000..8a5798e
--- /dev/null
+++ b/domain-layer/review/review.proto
@@ -0,0 +1,52 @@
+syntax = "proto3";
+
+package topcoder.domain.review.review;
+
+import "domain-layer/review/discussion.proto";
+import "google/protobuf/timestamp.proto";
+
+option java_multiple_files = true;
+option java_package = "com.topcoder.domain.review.review";
+
+message Review {
+  enum ReviewStatus {
+    DRAFT = 0;
+    SUBMITTED = 1;
+    PUBLISHED = 2;
+  }
+
+  optional int64 id = 1;
+  int64 reviewer_id = 2;
+  int64 scorecard_id = 3;
+  int64 work_id = 4;
+  int64 work_group_id = 5;
+  double total_score = 6;
+  ReviewStatus status = 7;
+  optional string custom_data = 8;
+  repeated Score scores = 9;
+  google.protobuf.Timestamp created_at = 10;
+  google.protobuf.Timestamp updated_at = 11;
+  int32 created_by = 12;
+  int32 updated_by = 13;
+}
+
+message Score {
+  optional int64 id = 1;
+  int64 criterion_id = 2;
+  int64 answer_type_value_id = 3;
+  repeated topcoder.domain.review.discussion.Discussion discussions = 4;
+  google.protobuf.Timestamp created_at = 5;
+  google.protobuf.Timestamp updated_at = 6;
+  int32 created_by = 7;
+  int32 updated_by = 8;
+}
+
+message WorkGroup {
+  optional int64 id = 1;
+  string name = 2;
+  optional string description = 3;
+  google.protobuf.Timestamp created_at = 4;
+  google.protobuf.Timestamp updated_at = 5;
+  int32 created_by = 6;
+  int32 updated_by = 7;
+}
\ No newline at end of file
diff --git a/domain-layer/review/scorecard.proto b/domain-layer/review/scorecard.proto
new file mode 100644
index 0000000..eb4b426
--- /dev/null
+++ b/domain-layer/review/scorecard.proto
@@ -0,0 +1,52 @@
+syntax = "proto3";
+
+package topcoder.domain.review.scorecard;
+
+import "google/protobuf/timestamp.proto";
+
+option java_multiple_files = true;
+option java_package = "com.topcoder.domain.review.scorecard";
+
+message Scorecard {
+  enum Status {
+    ENABLED = 0;
+    DISABLED = 1;
+  }
+
+  optional int64 id = 1;
+  string name = 2;
+  optional string description = 3;
+  int32 version = 4;
+  Status status = 5;
+  optional int64 parent_scorecard_id = 6;
+  repeated CriteriaGroup criteria_groups = 7;
+  google.protobuf.Timestamp created_at = 8;
+  google.protobuf.Timestamp updated_at = 9;
+  int32 created_by = 10;
+  int32 updated_by = 11;
+}
+
+message CriteriaGroup {
+  optional int64 id = 1;
+  string name = 2;
+  double weight = 3;
+  int32 display_order = 4;
+  repeated Criterion criterias = 5;
+  google.protobuf.Timestamp created_at = 6;
+  google.protobuf.Timestamp updated_at = 7;
+  int32 created_by = 8;
+  int32 updated_by = 9;
+}
+
+message Criterion {
+  optional int64 id = 1;
+  string name = 2;
+  optional string description = 3;
+  int64 answer_type_id = 4;
+  int32 display_order = 5;
+  optional string example = 6;
+  google.protobuf.Timestamp created_at = 7;
+  google.protobuf.Timestamp updated_at = 8;
+  int32 created_by = 9;
+  int32 updated_by = 10;
+}
\ No newline at end of file
diff --git a/domain-layer/review/services/answer_type.proto b/domain-layer/review/services/answer_type.proto
new file mode 100644
index 0000000..5f81035
--- /dev/null
+++ b/domain-layer/review/services/answer_type.proto
@@ -0,0 +1,30 @@
+syntax = "proto3";
+
+package topcoder.domain.service.review.answertype;
+
+import "common/common.proto";
+import "domain-layer/review/answer_type.proto";
+
+option java_multiple_files = true;
+option java_package = "com.topcoder.domain.service.review.answertype";
+
+message AnswerTypeList {
+  repeated topcoder.domain.review.answertype.AnswerType answer_types = 1;
+}
+
+service AnswerType {
+  rpc Get(topcoder.common.GetRequest)
+    returns (topcoder.domain.review.answertype.AnswerType);
+
+  rpc Search(topcoder.common.SearchRequest)
+    returns (AnswerTypeList);
+
+  rpc Create(topcoder.domain.review.answertype.AnswerType)
+      returns (topcoder.domain.review.answertype.AnswerType);
+
+  rpc Update(topcoder.domain.review.answertype.AnswerType)
+      returns (topcoder.domain.review.answertype.AnswerType);
+
+  rpc Delete(topcoder.common.GetRequest)
+      returns (topcoder.domain.review.answertype.AnswerType);
+}
\ No newline at end of file
diff --git a/domain-layer/review/services/discussion.proto b/domain-layer/review/services/discussion.proto
new file mode 100644
index 0000000..b01de16
--- /dev/null
+++ b/domain-layer/review/services/discussion.proto
@@ -0,0 +1,30 @@
+syntax = "proto3";
+
+package topcoder.domain.service.review.discussion;
+
+import "common/common.proto";
+import "domain-layer/review/discussion.proto";
+
+option java_multiple_files = true;
+option java_package = "com.topcoder.domain.service.review.discussion";
+
+message DiscussionList {
+  repeated topcoder.domain.review.discussion.Discussion discussions = 1;
+}
+
+service Discussion {
+  rpc Get(topcoder.common.GetRequest)
+    returns (topcoder.domain.review.discussion.Discussion);
+
+  rpc Search(topcoder.common.SearchRequest)
+    returns (DiscussionList);
+
+  rpc Create(topcoder.domain.review.discussion.Discussion)
+    returns (topcoder.domain.review.discussion.Discussion);
+
+  rpc Update(topcoder.domain.review.discussion.Discussion)
+    returns (topcoder.domain.review.discussion.Discussion);
+
+  rpc Delete(topcoder.common.GetRequest)
+    returns (topcoder.domain.review.discussion.Discussion);
+}
\ No newline at end of file
diff --git a/domain-layer/review/services/review.proto b/domain-layer/review/services/review.proto
new file mode 100644
index 0000000..1b141e1
--- /dev/null
+++ b/domain-layer/review/services/review.proto
@@ -0,0 +1,30 @@
+syntax = "proto3";
+
+package topcoder.domain.service.review.review;
+
+import "common/common.proto";
+import "domain-layer/review/review.proto";
+
+option java_multiple_files = true;
+option java_package = "com.topcoder.domain.service.review.review";
+
+message ReviewList {
+  repeated topcoder.domain.review.review.Review reviews = 1;
+}
+
+service Discussion {
+  rpc Get(topcoder.common.GetRequest)
+    returns (topcoder.domain.review.review.Review);
+
+  rpc Search(topcoder.common.SearchRequest)
+    returns (ReviewList);
+
+  rpc Create(topcoder.domain.review.review.Review)
+    returns (topcoder.domain.review.review.Review);
+
+  rpc Update(topcoder.domain.review.review.Review)
+    returns (topcoder.domain.review.review.Review);
+
+  rpc Delete(topcoder.common.GetRequest)
+    returns (topcoder.domain.review.review.Review);
+}
\ No newline at end of file
diff --git a/domain-layer/review/services/scorecard.proto b/domain-layer/review/services/scorecard.proto
new file mode 100644
index 0000000..136803e
--- /dev/null
+++ b/domain-layer/review/services/scorecard.proto
@@ -0,0 +1,30 @@
+syntax = "proto3";
+
+package topcoder.domain.service.review.scorecard;
+
+import "common/common.proto";
+import "domain-layer/review/scorecard.proto";
+
+option java_multiple_files = true;
+option java_package = "com.topcoder.domain.service.review.scorecard";
+
+message ScorecardList {
+  repeated topcoder.domain.review.scorecard.Scorecard scorecards = 1;
+}
+
+service Scorecard {
+  rpc Get(topcoder.common.GetRequest)
+    returns (topcoder.domain.review.scorecard.Scorecard);
+
+  rpc Search(topcoder.common.SearchRequest)
+    returns (ScorecardList);
+
+  rpc Create(topcoder.domain.review.scorecard.Scorecard)
+    returns (topcoder.domain.review.scorecard.Scorecard);
+
+  rpc Update(topcoder.domain.review.scorecard.Scorecard)
+    returns (topcoder.domain.review.scorecard.Scorecard);
+
+  rpc Delete(topcoder.common.GetRequest)
+    returns (topcoder.domain.review.scorecard.Scorecard);
+}
\ No newline at end of file