diff --git a/grpc/core/pom.xml b/grpc/core/pom.xml
index ede6b6bc188..5a22c85d96b 100644
--- a/grpc/core/pom.xml
+++ b/grpc/core/pom.xml
@@ -116,6 +116,11 @@
             <groupId>jakarta.annotation</groupId>
             <artifactId>jakarta.annotation-api</artifactId>
         </dependency>
+        <dependency>
+            <groupId>jakarta.json.bind</groupId>
+            <artifactId>jakarta.json.bind-api</artifactId>
+            <scope>provided</scope>
+        </dependency>
 
         <dependency>
             <groupId>org.junit.jupiter</groupId>
diff --git a/grpc/core/src/main/java/io/helidon/grpc/core/JsonbMarshaller.java b/grpc/core/src/main/java/io/helidon/grpc/core/JsonbMarshaller.java
new file mode 100644
index 00000000000..e94e05e951e
--- /dev/null
+++ b/grpc/core/src/main/java/io/helidon/grpc/core/JsonbMarshaller.java
@@ -0,0 +1,72 @@
+/*
+ * Copyright (c) 2020 Oracle and/or its affiliates.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package io.helidon.grpc.core;
+
+import java.io.ByteArrayInputStream;
+import java.io.InputStream;
+import java.nio.charset.StandardCharsets;
+
+import javax.inject.Named;
+import javax.json.bind.Jsonb;
+import javax.json.bind.JsonbBuilder;
+
+import io.grpc.MethodDescriptor;
+
+/**
+ * An implementation of a gRPC {@link MethodDescriptor.Marshaller} that
+ * uses JSONB for serialization.
+ *
+ * @param <T>  the type of value to be marshalled
+ */
+public class JsonbMarshaller<T>
+        implements MethodDescriptor.Marshaller<T> {
+
+    private static final Jsonb JSONB = JsonbBuilder.create();
+
+    private final Class<T> clazz;
+
+    /**
+     * Construct {@code JsonbMarshaller} instance.
+     *
+     * @param clazz  the type of object to marshall
+     */
+    JsonbMarshaller(Class<T> clazz) {
+        this.clazz = clazz;
+    }
+
+    @Override
+    public InputStream stream(T obj) {
+        return new ByteArrayInputStream(JSONB.toJson(obj).getBytes(StandardCharsets.UTF_8));
+    }
+
+    @Override
+    public T parse(InputStream in) {
+        return JSONB.fromJson(in, clazz);
+    }
+
+    /**
+     * A {@link MarshallerSupplier} implementation that supplies
+     * instances of {@link JsonbMarshaller}.
+     */
+    @Named("jsonb")
+    public static class Supplier implements MarshallerSupplier {
+        @Override
+        public <T> MethodDescriptor.Marshaller<T> get(Class<T> clazz) {
+            return new JsonbMarshaller<>(clazz);
+        }
+    }
+}
diff --git a/grpc/core/src/main/java/module-info.java b/grpc/core/src/main/java/module-info.java
index 35eaa944c26..7228d18c663 100644
--- a/grpc/core/src/main/java/module-info.java
+++ b/grpc/core/src/main/java/module-info.java
@@ -14,6 +14,10 @@
  * limitations under the License.
  */
 
+import io.helidon.grpc.core.JavaMarshaller;
+import io.helidon.grpc.core.JsonbMarshaller;
+import io.helidon.grpc.core.MarshallerSupplier;
+
 /**
  * gRPC Core Module.
  */
@@ -37,8 +41,15 @@
     requires transitive com.google.protobuf;
 
     requires java.annotation;
+    requires static java.json.bind;
     requires java.logging;
     requires java.naming;
 
     requires jakarta.inject.api;
+
+    provides MarshallerSupplier with
+            MarshallerSupplier.DefaultMarshallerSupplier,
+            MarshallerSupplier.ProtoMarshallerSupplier,
+            JavaMarshaller.Supplier,
+            JsonbMarshaller.Supplier;
 }
diff --git a/grpc/core/src/main/resources/META-INF/services/io.helidon.grpc.core.MarshallerSupplier b/grpc/core/src/main/resources/META-INF/services/io.helidon.grpc.core.MarshallerSupplier
index ce7d9b18304..23fcb5bda15 100644
--- a/grpc/core/src/main/resources/META-INF/services/io.helidon.grpc.core.MarshallerSupplier
+++ b/grpc/core/src/main/resources/META-INF/services/io.helidon.grpc.core.MarshallerSupplier
@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2019 Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2019, 2020 Oracle and/or its affiliates.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -16,3 +16,4 @@
 io.helidon.grpc.core.MarshallerSupplier$DefaultMarshallerSupplier
 io.helidon.grpc.core.MarshallerSupplier$ProtoMarshallerSupplier
 io.helidon.grpc.core.JavaMarshaller$Supplier
+io.helidon.grpc.core.JsonbMarshaller$Supplier