diff --git a/Gemfile b/Gemfile
index 63ab7204..8b2bb232 100644
--- a/Gemfile
+++ b/Gemfile
@@ -5,42 +5,28 @@ ruby "3.2.0"
 # Bundle edge Rails instead: gem "rails", github: "rails/rails", branch: "main"
 gem "rails", "7.1.2"
 
-# The original asset pipeline for Rails [https://github.com/rails/sprockets-rails]
 gem "sprockets-rails"
 
-# Use postgresql as the database for Active Record
 gem "pg", "~> 1.1"
 
-# Use the Puma web server [https://github.com/puma/puma]
 gem "puma", ">= 5.0"
 
-# Use JavaScript with ESM import maps [https://github.com/rails/importmap-rails]
 gem "importmap-rails"
-
-# Hotwire's SPA-like page accelerator [https://turbo.hotwired.dev]
 gem "turbo-rails"
-
-# Hotwire's modest JavaScript framework [https://stimulus.hotwired.dev]
 gem "stimulus-rails"
-
-# Use Tailwind CSS [https://github.com/rails/tailwindcss-rails]
 gem "tailwindcss-rails"
 
-# Build JSON APIs with ease [https://github.com/rails/jbuilder]
-gem "jbuilder"
-
 # Use Redis adapter to run Action Cable in production
 # gem "redis", ">= 4.0.1"
 
 # Use Kredis to get higher-level data types in Redis [https://github.com/rails/kredis]
 # gem "kredis"
 
-# Use Active Model has_secure_password [https://guides.rubyonrails.org/active_model_basics.html#securepassword]
-# gem "bcrypt", "~> 3.1.7"
-
 # Windows does not include zoneinfo files, so bundle the tzinfo-data gem
 gem "tzinfo-data", platforms: %i[ windows jruby ]
 
+gem "passwordless", "~> 1.1"
+gem "graphql", "~> 2.2"
 gem "view_component"
 
 # Reduces boot times through caching; required in config/boot.rb
@@ -66,6 +52,7 @@ group :development do
   # gem "rack-mini-profiler"
 
   gem "letter_opener"
+  gem "graphiql-rails"
 end
 
 group :test do
@@ -77,6 +64,4 @@ group :test do
   gem "factory_bot_rails"
   gem 'shoulda-matchers', '~> 5.0'
   gem "timecop"
-end
-
-gem "passwordless", "~> 1.1"
+end
\ No newline at end of file
diff --git a/Gemfile.lock b/Gemfile.lock
index ac34571c..ffe24bab 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -120,6 +120,11 @@ GEM
       i18n (>= 1.8.11, < 2)
     globalid (1.2.1)
       activesupport (>= 6.1)
+    graphiql-rails (1.9.0)
+      railties
+      sprockets-rails
+    graphql (2.2.3)
+      racc (~> 1.4)
     i18n (1.14.1)
       concurrent-ruby (~> 1.0)
     importmap-rails (1.2.3)
@@ -130,9 +135,6 @@ GEM
     irb (1.11.0)
       rdoc
       reline (>= 0.3.8)
-    jbuilder (2.11.5)
-      actionview (>= 5.0.0)
-      activesupport (>= 5.0.0)
     launchy (2.5.2)
       addressable (~> 2.8)
     letter_opener (1.8.1)
@@ -305,8 +307,9 @@ DEPENDENCIES
   dotenv-rails
   factory_bot_rails
   faker
+  graphiql-rails
+  graphql (~> 2.2)
   importmap-rails
-  jbuilder
   letter_opener
   passwordless (~> 1.1)
   pg (~> 1.1)
diff --git a/app/controllers/graphql_controller.rb b/app/controllers/graphql_controller.rb
new file mode 100644
index 00000000..6ce0ead2
--- /dev/null
+++ b/app/controllers/graphql_controller.rb
@@ -0,0 +1,55 @@
+# frozen_string_literal: true
+
+class GraphqlController < ApplicationController
+  # If accessing from outside this domain, nullify the session
+  # This allows for outside API access while preventing CSRF attacks,
+  # but you'll have to authenticate your user separately
+  # protect_from_forgery with: :null_session
+
+  skip_before_action :verify_authenticity_token
+
+  def execute
+    variables = prepare_variables(params[:variables])
+    query = params[:query]
+    operation_name = params[:operationName]
+    context = {
+      # Query context goes here, for example:
+      current_user: current_user,
+      current_company: current_company
+    }
+    result = StaffplanReduxSchema.execute(query, variables: variables, context: context, operation_name: operation_name)
+    render json: result
+  rescue StandardError => e
+    raise e unless Rails.env.development?
+    handle_error_in_development(e)
+  end
+
+  private
+
+  # Handle variables in form data, JSON body, or a blank value
+  def prepare_variables(variables_param)
+    case variables_param
+    when String
+      if variables_param.present?
+        JSON.parse(variables_param) || {}
+      else
+        {}
+      end
+    when Hash
+      variables_param
+    when ActionController::Parameters
+      variables_param.to_unsafe_hash # GraphQL-Ruby will validate name and type of incoming variables.
+    when nil
+      {}
+    else
+      raise ArgumentError, "Unexpected parameter: #{variables_param}"
+    end
+  end
+
+  def handle_error_in_development(e)
+    logger.error e.message
+    logger.error e.backtrace.join("\n")
+
+    render json: { errors: [{ message: e.message, backtrace: e.backtrace }], data: {} }, status: 500
+  end
+end
diff --git a/app/graphql/mutations/.keep b/app/graphql/mutations/.keep
new file mode 100644
index 00000000..e69de29b
diff --git a/app/graphql/mutations/base_mutation.rb b/app/graphql/mutations/base_mutation.rb
new file mode 100644
index 00000000..4f318d4e
--- /dev/null
+++ b/app/graphql/mutations/base_mutation.rb
@@ -0,0 +1,7 @@
+# frozen_string_literal: true
+
+module Mutations
+  class BaseMutation < GraphQL::Schema::Mutation
+    null false
+  end
+end
diff --git a/app/graphql/mutations/create_work_week.rb b/app/graphql/mutations/create_work_week.rb
new file mode 100644
index 00000000..138411b1
--- /dev/null
+++ b/app/graphql/mutations/create_work_week.rb
@@ -0,0 +1,14 @@
+module Mutations
+  class CreateWorkWeek < BaseMutation
+    # arguments passed to the `resolve` method
+    # argument :description, String, required: true
+    # argument :url, String, required: true
+
+    # return type from the mutation
+    type Types::StaffPlan::WorkWeekType
+
+    def resolve
+      # TODO: implement
+    end
+  end
+end
\ No newline at end of file
diff --git a/app/graphql/mutations/set_current_company.rb b/app/graphql/mutations/set_current_company.rb
new file mode 100644
index 00000000..c5af4796
--- /dev/null
+++ b/app/graphql/mutations/set_current_company.rb
@@ -0,0 +1,13 @@
+module Mutations
+  class SetCurrentCompany < BaseMutation
+    # arguments passed to the `resolve` method
+    argument :company_id, ID, required: true
+
+    # return type from the mutation
+    type Types::StaffPlan::CompanyType
+
+    def resolve
+      # TODO: implement
+    end
+  end
+end
\ No newline at end of file
diff --git a/app/graphql/mutations/update_work_week.rb b/app/graphql/mutations/update_work_week.rb
new file mode 100644
index 00000000..cf2b2676
--- /dev/null
+++ b/app/graphql/mutations/update_work_week.rb
@@ -0,0 +1,14 @@
+module Mutations
+  class UpdateWorkWeek < BaseMutation
+    # arguments passed to the `resolve` method
+    # argument :description, String, required: true
+    # argument :url, String, required: true
+
+    # return type from the mutation
+    type Types::StaffPlan::WorkWeekType
+
+    def resolve
+      # TODO: implement
+    end
+  end
+end
\ No newline at end of file
diff --git a/app/graphql/resolvers/base_resolver.rb b/app/graphql/resolvers/base_resolver.rb
new file mode 100644
index 00000000..89b7f9da
--- /dev/null
+++ b/app/graphql/resolvers/base_resolver.rb
@@ -0,0 +1,4 @@
+module Resolvers
+  class BaseResolver < GraphQL::Schema::Resolver
+  end
+end
diff --git a/app/graphql/staffplan_redux_schema.rb b/app/graphql/staffplan_redux_schema.rb
new file mode 100644
index 00000000..2bd91357
--- /dev/null
+++ b/app/graphql/staffplan_redux_schema.rb
@@ -0,0 +1,42 @@
+# frozen_string_literal: true
+
+class StaffplanReduxSchema < GraphQL::Schema
+  mutation(Types::MutationType)
+  query(Types::QueryType)
+
+  # For batch-loading (see https://graphql-ruby.org/dataloader/overview.html)
+  use GraphQL::Dataloader
+
+  # GraphQL-Ruby calls this when something goes wrong while running a query:
+  def self.type_error(err, context)
+    # if err.is_a?(GraphQL::InvalidNullError)
+    #   # report to your bug tracker here
+    #   return nil
+    # end
+    super
+  end
+
+  # Union and Interface Resolution
+  def self.resolve_type(abstract_type, obj, ctx)
+    # TODO: Implement this method
+    # to return the correct GraphQL object type for `obj`
+    raise(GraphQL::RequiredImplementationMissingError)
+  end
+
+  # Stop validating when it encounters this many errors:
+  validate_max_errors(100)
+
+  # Relay-style Object Identification:
+
+  # Return a string UUID for `object`
+  def self.id_from_object(object, type_definition, query_ctx)
+    # For example, use Rails' GlobalID library (https://github.com/rails/globalid):
+    object.to_gid_param
+  end
+
+  # Given a string UUID, find the object
+  def self.object_from_id(global_id, query_ctx)
+    # For example, use Rails' GlobalID library (https://github.com/rails/globalid):
+    GlobalID.find(global_id)
+  end
+end
diff --git a/app/graphql/types/.keep b/app/graphql/types/.keep
new file mode 100644
index 00000000..e69de29b
diff --git a/app/graphql/types/base_argument.rb b/app/graphql/types/base_argument.rb
new file mode 100644
index 00000000..2e2278c5
--- /dev/null
+++ b/app/graphql/types/base_argument.rb
@@ -0,0 +1,6 @@
+# frozen_string_literal: true
+
+module Types
+  class BaseArgument < GraphQL::Schema::Argument
+  end
+end
diff --git a/app/graphql/types/base_connection.rb b/app/graphql/types/base_connection.rb
new file mode 100644
index 00000000..366c69e8
--- /dev/null
+++ b/app/graphql/types/base_connection.rb
@@ -0,0 +1,8 @@
+# frozen_string_literal: true
+
+module Types
+  class BaseConnection < Types::BaseObject
+    # add `nodes` and `pageInfo` fields, as well as `edge_type(...)` and `node_nullable(...)` overrides
+    include GraphQL::Types::Relay::ConnectionBehaviors
+  end
+end
diff --git a/app/graphql/types/base_edge.rb b/app/graphql/types/base_edge.rb
new file mode 100644
index 00000000..e0d2f79c
--- /dev/null
+++ b/app/graphql/types/base_edge.rb
@@ -0,0 +1,8 @@
+# frozen_string_literal: true
+
+module Types
+  class BaseEdge < Types::BaseObject
+    # add `node` and `cursor` fields, as well as `node_type(...)` override
+    include GraphQL::Types::Relay::EdgeBehaviors
+  end
+end
diff --git a/app/graphql/types/base_enum.rb b/app/graphql/types/base_enum.rb
new file mode 100644
index 00000000..cf43fea4
--- /dev/null
+++ b/app/graphql/types/base_enum.rb
@@ -0,0 +1,6 @@
+# frozen_string_literal: true
+
+module Types
+  class BaseEnum < GraphQL::Schema::Enum
+  end
+end
diff --git a/app/graphql/types/base_field.rb b/app/graphql/types/base_field.rb
new file mode 100644
index 00000000..611eb056
--- /dev/null
+++ b/app/graphql/types/base_field.rb
@@ -0,0 +1,7 @@
+# frozen_string_literal: true
+
+module Types
+  class BaseField < GraphQL::Schema::Field
+    argument_class Types::BaseArgument
+  end
+end
diff --git a/app/graphql/types/base_input_object.rb b/app/graphql/types/base_input_object.rb
new file mode 100644
index 00000000..27951132
--- /dev/null
+++ b/app/graphql/types/base_input_object.rb
@@ -0,0 +1,7 @@
+# frozen_string_literal: true
+
+module Types
+  class BaseInputObject < GraphQL::Schema::InputObject
+    argument_class Types::BaseArgument
+  end
+end
diff --git a/app/graphql/types/base_interface.rb b/app/graphql/types/base_interface.rb
new file mode 100644
index 00000000..18899387
--- /dev/null
+++ b/app/graphql/types/base_interface.rb
@@ -0,0 +1,11 @@
+# frozen_string_literal: true
+
+module Types
+  module BaseInterface
+    include GraphQL::Schema::Interface
+    edge_type_class(Types::BaseEdge)
+    connection_type_class(Types::BaseConnection)
+
+    field_class Types::BaseField
+  end
+end
diff --git a/app/graphql/types/base_object.rb b/app/graphql/types/base_object.rb
new file mode 100644
index 00000000..487af2f5
--- /dev/null
+++ b/app/graphql/types/base_object.rb
@@ -0,0 +1,9 @@
+# frozen_string_literal: true
+
+module Types
+  class BaseObject < GraphQL::Schema::Object
+    edge_type_class(Types::BaseEdge)
+    connection_type_class(Types::BaseConnection)
+    field_class Types::BaseField
+  end
+end
diff --git a/app/graphql/types/base_scalar.rb b/app/graphql/types/base_scalar.rb
new file mode 100644
index 00000000..719bc808
--- /dev/null
+++ b/app/graphql/types/base_scalar.rb
@@ -0,0 +1,6 @@
+# frozen_string_literal: true
+
+module Types
+  class BaseScalar < GraphQL::Schema::Scalar
+  end
+end
diff --git a/app/graphql/types/base_union.rb b/app/graphql/types/base_union.rb
new file mode 100644
index 00000000..95941696
--- /dev/null
+++ b/app/graphql/types/base_union.rb
@@ -0,0 +1,8 @@
+# frozen_string_literal: true
+
+module Types
+  class BaseUnion < GraphQL::Schema::Union
+    edge_type_class(Types::BaseEdge)
+    connection_type_class(Types::BaseConnection)
+  end
+end
diff --git a/app/graphql/types/mutation_type.rb b/app/graphql/types/mutation_type.rb
new file mode 100644
index 00000000..321b5dee
--- /dev/null
+++ b/app/graphql/types/mutation_type.rb
@@ -0,0 +1,9 @@
+# frozen_string_literal: true
+
+module Types
+  class MutationType < Types::BaseObject
+    field :set_current_company, mutation: Mutations::SetCurrentCompany
+    field :create_work_week, mutation: Mutations::CreateWorkWeek
+    field :update_work_week, mutation: Mutations::UpdateWorkWeek
+  end
+end
diff --git a/app/graphql/types/node_type.rb b/app/graphql/types/node_type.rb
new file mode 100644
index 00000000..c71ec3ee
--- /dev/null
+++ b/app/graphql/types/node_type.rb
@@ -0,0 +1,9 @@
+# frozen_string_literal: true
+
+module Types
+  module NodeType
+    include Types::BaseInterface
+    # Add the `id` field
+    include GraphQL::Types::Relay::NodeBehaviors
+  end
+end
diff --git a/app/graphql/types/query_type.rb b/app/graphql/types/query_type.rb
new file mode 100644
index 00000000..8a50de20
--- /dev/null
+++ b/app/graphql/types/query_type.rb
@@ -0,0 +1,57 @@
+# frozen_string_literal: true
+
+module Types
+  class QueryType < Types::BaseObject
+    field :node, Types::NodeType, null: true, description: "Fetches an object given its ID." do
+      argument :id, ID, required: true, description: "ID of the object."
+    end
+
+    def node(id:)
+      context.schema.object_from_id(id, context)
+    end
+
+    field :nodes, [Types::NodeType, null: true], null: true, description: "Fetches a list of objects given a list of IDs." do
+      argument :ids, [ID], required: true, description: "IDs of the objects."
+    end
+
+    def nodes(ids:)
+      ids.map { |id| context.schema.object_from_id(id, context) }
+    end
+
+    field :clients, [Types::StaffPlan::ClientType], null: false
+    def clients
+      context[:current_user].current_company.clients.all
+    end
+
+    field :project_assignments, [Types::StaffPlan::AssignmentType], null: false do
+      argument :project_id, ID, required: true, description: "ID of the project to fetch assignments for."
+    end
+
+    def project_assignments(project_id: nil)
+      context[:current_company]
+        .projects
+        .find(project_id)
+        .assignments
+        .all
+    end
+
+    field :user_assignments, [Types::StaffPlan::AssignmentType], null: false do
+      argument :user_id, ID, required: false,
+               description: "ID of the user to fetch assignments for. The current user's assignments will be returned if this argument is not provided."
+    end
+    def user_assignments(user_id: nil)
+      target = if user_id.present?
+        context[:current_company].users.find(user_id)
+      else
+        context[:current_user]
+      end
+
+      target.assignments.all
+    end
+
+    field :users, [Types::StaffPlan::UserType], null: false
+    def users
+      context[:current_user].current_company.users.all
+    end
+  end
+end
diff --git a/app/graphql/types/staff_plan/assignment_type.rb b/app/graphql/types/staff_plan/assignment_type.rb
new file mode 100644
index 00000000..cdc0ec44
--- /dev/null
+++ b/app/graphql/types/staff_plan/assignment_type.rb
@@ -0,0 +1,20 @@
+# frozen_string_literal: true
+
+module Types
+  module StaffPlan
+    class AssignmentType < Types::BaseObject
+      field :id, ID, null: false
+      field :user, Types::StaffPlan::UserType, null: false
+      field :project, Types::StaffPlan::ProjectType, null: false
+      field :status, String, null: false
+      field :created_at, GraphQL::Types::ISO8601DateTime, null: false
+      field :updated_at, GraphQL::Types::ISO8601DateTime, null: false
+
+      field :work_weeks, [Types::StaffPlan::WorkWeekType], null: false
+
+      def work_weeks
+        object.work_weeks
+      end
+    end
+  end
+end
diff --git a/app/graphql/types/staff_plan/client_type.rb b/app/graphql/types/staff_plan/client_type.rb
new file mode 100644
index 00000000..a46765c1
--- /dev/null
+++ b/app/graphql/types/staff_plan/client_type.rb
@@ -0,0 +1,20 @@
+# frozen_string_literal: true
+
+module Types
+  module StaffPlan
+    class ClientType < Types::BaseObject
+      field :id, ID, null: false
+      field :name, String, null: false
+      field :description, String, null: true
+      field :status, String, null: false
+      field :created_at, GraphQL::Types::ISO8601DateTime, null: false
+      field :updated_at, GraphQL::Types::ISO8601DateTime, null: false
+
+      field :projects, [Types::StaffPlan::ProjectType], null: false
+
+      def projects
+        object.projects
+      end
+    end
+  end
+end
diff --git a/app/graphql/types/staff_plan/company_type.rb b/app/graphql/types/staff_plan/company_type.rb
new file mode 100644
index 00000000..05a4a753
--- /dev/null
+++ b/app/graphql/types/staff_plan/company_type.rb
@@ -0,0 +1,30 @@
+# frozen_string_literal: true
+
+module Types
+  module StaffPlan
+    class CompanyType < Types::BaseObject
+      field :id, ID, null: false
+      field :name, String, null: false
+      field :created_at, GraphQL::Types::ISO8601DateTime, null: false
+      field :updated_at, GraphQL::Types::ISO8601DateTime, null: false
+
+      field :projects, [Types::StaffPlan::ProjectType], null: false
+
+      def projects
+        object.projects
+      end
+
+      field :clients, [Types::StaffPlan::ClientType], null: false
+
+      def clients
+        object.clients
+      end
+
+      field :users, [Types::StaffPlan::UserType], null: false
+
+      def users
+        object.users
+      end
+    end
+  end
+end
diff --git a/app/graphql/types/staff_plan/project_type.rb b/app/graphql/types/staff_plan/project_type.rb
new file mode 100644
index 00000000..1a7f7a71
--- /dev/null
+++ b/app/graphql/types/staff_plan/project_type.rb
@@ -0,0 +1,33 @@
+# frozen_string_literal: true
+
+module Types
+  module StaffPlan
+    class ProjectType < Types::BaseObject
+      field :id, ID, null: false
+      field :client, Types::StaffPlan::ClientType, null: false
+      field :name, String, null: false
+      field :status, String, null: false
+      field :payment_frequency, String, null: false
+      field :created_at, GraphQL::Types::ISO8601DateTime, null: false
+      field :updated_at, GraphQL::Types::ISO8601DateTime, null: false
+
+      field :assignments, [Types::StaffPlan::AssignmentType], null: false
+
+      def assigmnents
+        object.assignments
+      end
+
+      field :users, [Types::StaffPlan::UserType], null: false
+
+      def users
+        object.users
+      end
+
+      field :work_weeks, [Types::StaffPlan::WorkWeekType], null: false
+
+      def work_weeks
+        object.work_weeks
+      end
+    end
+  end
+end
diff --git a/app/graphql/types/staff_plan/user_type.rb b/app/graphql/types/staff_plan/user_type.rb
new file mode 100644
index 00000000..c4358968
--- /dev/null
+++ b/app/graphql/types/staff_plan/user_type.rb
@@ -0,0 +1,32 @@
+# frozen_string_literal: true
+
+module Types
+  module StaffPlan
+    class UserType < Types::BaseObject
+      field :id, ID, null: false
+      field :name, String, null: false
+      field :email, String, null: false
+      field :current_company_id, ID, null: true
+      field :created_at, GraphQL::Types::ISO8601DateTime, null: false
+      field :updated_at, GraphQL::Types::ISO8601DateTime, null: false
+
+      field :companies, [Types::StaffPlan::CompanyType], null: false
+
+      def companies
+        object.companies
+      end
+
+      field :assignments, [Types::StaffPlan::AssignmentType], null: false
+
+      def assignments
+        object.assignments
+      end
+
+      field :projects, [Types::StaffPlan::ProjectType], null: false
+
+      def projects
+        object.projects
+      end
+    end
+  end
+end
diff --git a/app/graphql/types/staff_plan/work_week_type.rb b/app/graphql/types/staff_plan/work_week_type.rb
new file mode 100644
index 00000000..76fbd2a9
--- /dev/null
+++ b/app/graphql/types/staff_plan/work_week_type.rb
@@ -0,0 +1,28 @@
+# frozen_string_literal: true
+
+module Types
+  module StaffPlan
+    class WorkWeekType < Types::BaseObject
+      field :id, ID, null: false
+      field :user, Types::StaffPlan::UserType, null: false
+      field :assignment_id, Integer, null: false
+      field :cweek, Integer, null: false
+      field :year, Integer, null: false
+      field :beginning_of_week, Integer, null: false
+      field :estimated_hours, Integer, null: false
+      field :actual_hours, Integer, null: false
+      field :created_at, GraphQL::Types::ISO8601DateTime, null: false
+      field :updated_at, GraphQL::Types::ISO8601DateTime, null: false
+
+      def user
+        object.user
+      end
+
+      field :project, Types::StaffPlan::ProjectType, null: false
+
+      def project
+        object.project
+      end
+    end
+  end
+end
diff --git a/config/routes.rb b/config/routes.rb
index 3c58fc32..4c7b16ca 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -1,4 +1,13 @@
 Rails.application.routes.draw do
+  namespace :api do
+    get 'current_user/create'
+  end
+  if Rails.env.development?
+    mount GraphiQL::Rails::Engine, at: "/graphiql", graphql_path: "/graphql"
+  end
+
+  post "/graphql", to: "graphql#execute"
+
   resources :work_weeks
   resources :assignments
   resources :projects