diff --git a/internal/account/repository/postgres/postgres_account.go b/internal/account/repository/postgres/postgres_account.go
new file mode 100644
index 0000000..c6709c4
--- /dev/null
+++ b/internal/account/repository/postgres/postgres_account.go
@@ -0,0 +1,145 @@
+package postgres
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/christianselig/apollo-backend/internal/domain"
+	"github.com/jackc/pgx/v4/pgxpool"
+)
+
+type postgresAccountRepository struct {
+	pool *pgxpool.Pool
+}
+
+func NewPostgresAccountRepository(pool *pgxpool.Pool) domain.AccountRepository {
+	return &postgresAccountRepository{pool: pool}
+}
+
+func (p *postgresAccountRepository) fetch(ctx context.Context, query string, args ...interface{}) ([]domain.Account, error) {
+	rows, err := p.pool.Query(ctx, query, args...)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	var accs []domain.Account
+	for rows.Next() {
+		var acc domain.Account
+		if err := rows.Scan(
+			&acc.ID,
+			&acc.Username,
+			&acc.AccountID,
+			&acc.AccessToken,
+			&acc.RefreshToken,
+			&acc.ExpiresAt,
+			&acc.LastMessageID,
+			&acc.LastCheckedAt,
+		); err != nil {
+			return nil, err
+		}
+		accs = append(accs, acc)
+	}
+
+	return accs, nil
+}
+
+func (p *postgresAccountRepository) GetByID(ctx context.Context, id int64) (domain.Account, error) {
+	query := `
+		SELECT id, username, account_id, access_token, refresh_token, expires_at, last_message_id, last_checked_at
+		FROM accounts
+		WHERE id = $1`
+
+	accs, err := p.fetch(ctx, query, id)
+	if err != nil {
+		return domain.Account{}, err
+	}
+
+	if len(accs) == 0 {
+		return domain.Account{}, domain.ErrNotFound
+	}
+
+	return accs[0], nil
+}
+
+func (p *postgresAccountRepository) GetByRedditID(ctx context.Context, id string) (domain.Account, error) {
+	query := `
+		SELECT id, username, account_id, access_token, refresh_token, expires_at, last_message_id, last_checked_at
+		FROM accounts
+		WHERE account_id = $1`
+
+	accs, err := p.fetch(ctx, query, id)
+	if err != nil {
+		return domain.Account{}, err
+	}
+
+	if len(accs) == 0 {
+		return domain.Account{}, domain.ErrNotFound
+	}
+
+	return accs[0], nil
+}
+
+func (p *postgresAccountRepository) Create(ctx context.Context, acc *domain.Account) error {
+	query := `
+		INSERT INTO accounts
+			(username, account_id, access_token, refresh_token, expires_at, last_message_id, last_checked_at)
+		VALUES ($1, $2, $3, $4, $5, $6, $7)
+		RETURNING id`
+
+	res, err := p.pool.Query(
+		ctx,
+		query,
+		acc.Username,
+		acc.AccountID,
+		acc.AccessToken,
+		acc.RefreshToken,
+		acc.ExpiresAt,
+		acc.LastMessageID,
+		acc.LastCheckedAt,
+	)
+	if err != nil {
+		return err
+	}
+
+	return res.Scan(&acc.ID)
+}
+
+func (p *postgresAccountRepository) Update(ctx context.Context, acc *domain.Account) error {
+	query := `
+		UPDATE accounts
+		SET username = $2,
+			account_id = $3,
+			access_token = $4,
+			refresh_token = $5,
+			expires_at = $6,
+			last_message_id = $7,
+			last_checked_at = $8
+		WHERE id = $1`
+
+	res, err := p.pool.Exec(
+		ctx,
+		query,
+		acc.AccountID,
+		acc.AccessToken,
+		acc.RefreshToken,
+		acc.ExpiresAt,
+		acc.LastMessageID,
+		acc.LastCheckedAt,
+	)
+
+	if res.RowsAffected() != 1 {
+		return fmt.Errorf("weird behaviour, total rows affected: %d", res.RowsAffected())
+	}
+	return err
+}
+
+func (p *postgresAccountRepository) Delete(ctx context.Context, id int64) error {
+	query := `DELETE FROM accounts WHERE id = $1`
+	res, err := p.pool.Exec(ctx, query, id)
+
+	if res.RowsAffected() != 1 {
+		return fmt.Errorf("weird behaviour, total rows affected: %d", res.RowsAffected())
+	}
+	return err
+}
diff --git a/internal/domain/account.go b/internal/domain/account.go
index 82ab2a6..2c98c5c 100644
--- a/internal/domain/account.go
+++ b/internal/domain/account.go
@@ -23,8 +23,8 @@ type AccountRepository interface {
 	GetByID(ctx context.Context, id int64) (Account, error)
 	GetByRedditID(ctx context.Context, id string) (Account, error)
 
-	Update(ctx context.Context, ac *Account) error
-	Create(ctx context.Context, ac *Account) error
+	Update(ctx context.Context, acc *Account) error
+	Create(ctx context.Context, acc *Account) error
 	Delete(ctx context.Context, id int64) error
 }
 
@@ -32,6 +32,6 @@ type AccountRepository interface {
 type AccountUsecase interface {
 	GetByID(ctx context.Context, id int64) (Account, error)
 	GetByRedditID(ctx context.Context, id string) (Account, error)
-	CreateOrUpdate(ctx context.Context, ac *Account) error
+	CreateOrUpdate(ctx context.Context, acc *Account) error
 	Delete(ctx context.Context, id int64) error
 }
diff --git a/internal/domain/device.go b/internal/domain/device.go
new file mode 100644
index 0000000..70f4cad
--- /dev/null
+++ b/internal/domain/device.go
@@ -0,0 +1,24 @@
+package domain
+
+import "context"
+
+type Device struct {
+	ID           int64
+	APNSToken    string
+	Sandbox      bool
+	LastPingedAt int64
+}
+
+type DeviceRepository interface {
+	GetByAPNSToken(ctx context.Context, token string) (Device, error)
+
+	Update(ctx context.Context, dev *Device) error
+	Create(ctx context.Context, dev *Device) error
+	Delete(ctx context.Context, token string) error
+}
+
+type DeviceUsecase interface {
+	GetByAPNSToken(ctx context.Context, token string) (Device, error)
+	CreateOrUpdate(ctx context.Context, dev *Device) error
+	Delete(ctx context.Context, token string) error
+}
diff --git a/internal/domain/errors.go b/internal/domain/errors.go
new file mode 100644
index 0000000..991600f
--- /dev/null
+++ b/internal/domain/errors.go
@@ -0,0 +1,10 @@
+package domain
+
+import "errors"
+
+var (
+	// ErrNotFound will be returned if the requested item is not found
+	ErrNotFound = errors.New("requested item was not found")
+	// ErrConflict will be returned if the item being persisted already exists
+	ErrConflict = errors.New("item already exists")
+)