diff --git a/.github/workflows/system.yml b/.github/workflows/system.yml
index 3f3f21e..84edfd7 100644
--- a/.github/workflows/system.yml
+++ b/.github/workflows/system.yml
@@ -38,7 +38,7 @@ jobs:
           curl https://dl.min.io/client/mc/release/linux-amd64/mc --create-dirs -o /usr/local/bin/mc
           chmod 755 /usr/local/bin/mc
 
-      - name: Build and run
+      - name: Build and run, posix backend
         run: |
           make testbin
           export AWS_ACCESS_KEY_ID=ABCDEFGHIJKLMNOPQRST
@@ -54,6 +54,20 @@ jobs:
           mkdir /tmp/cover
           VERSITYGW_TEST_ENV=./tests/.env.default GOCOVERDIR=/tmp/cover ./tests/run_all.sh
 
+      #- name: Build and run, s3 backend
+      #  run: |
+      #    make testbin
+      #    export AWS_ACCESS_KEY_ID=ABCDEFGHIJKLMNOPQRST
+      #    export AWS_SECRET_ACCESS_KEY=ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmn
+      #    export AWS_REGION=us-east-1
+      #    aws configure set aws_access_key_id $AWS_ACCESS_KEY_ID --profile versity_s3
+      #    aws configure set aws_secret_access_key $AWS_SECRET_ACCESS_KEY --profile versity_s3
+      #    aws configure set aws_region $AWS_REGION --profile versity_s3
+      #    export AWS_ACCESS_KEY_ID_TWO=ABCDEFGHIJKLMNOPQRST
+      #    export AWS_SECRET_ACCESS_KEY_TWO=ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmn
+      #    export WORKSPACE=$GITHUB_WORKSPACE
+      #    VERSITYGW_TEST_ENV=./tests/.env.s3.default GOCOVERDIR=/tmp/cover ./tests/run_all.sh
+
       - name: Coverage report
         run: |
           go tool covdata percent -i=/tmp/cover
diff --git a/Dockerfile_test_bats b/Dockerfile_test_bats
index 5d79911..6730c1a 100644
--- a/Dockerfile_test_bats
+++ b/Dockerfile_test_bats
@@ -1,6 +1,9 @@
 FROM --platform=linux/arm64 ubuntu:latest
 
 ARG DEBIAN_FRONTEND=noninteractive
+ARG SECRETS_FILE=tests/.secrets
+ARG CONFIG_FILE=tests/.env.docker
+
 ENV TZ=Etc/UTC
 RUN apt-get update && \
     apt-get install -y --no-install-recommends \
@@ -12,6 +15,7 @@ RUN apt-get update && \
     tzdata \
     s3cmd \
     jq \
+    bc \
     ca-certificates && \
     update-ca-certificates && \
     rm -rf /var/lib/apt/lists/*
@@ -57,11 +61,12 @@ USER tester
 COPY --chown=tester:tester . /home/tester
 
 WORKDIR /home/tester
-RUN cp tests/.env.docker.default tests/.env.docker
+RUN cp ${CONFIG_FILE}.default $CONFIG_FILE
+#RUN cp tests/.env.docker.s3.default tests/.env.docker.s3
 RUN cp tests/s3cfg.local.default tests/s3cfg.local
 RUN make
 
-RUN . tests/.secrets && \
+RUN . $SECRETS_FILE && \
     export AWS_ACCESS_KEY_ID AWS_SECRET_ACCESS_KEY AWS_REGION AWS_PROFILE && \
     aws configure set aws_access_key_id $AWS_ACCESS_KEY_ID --profile $AWS_PROFILE && \
     aws configure set aws_secret_access_key $AWS_SECRET_ACCESS_KEY --profile $AWS_PROFILE && \
@@ -74,6 +79,6 @@ RUN openssl genpkey -algorithm RSA -out versitygw-docker.pem -pkeyopt rsa_keygen
         -subj "/C=US/ST=California/L=San Francisco/O=Versity/OU=Software/CN=versity.com"
 
 ENV WORKSPACE=.
-ENV VERSITYGW_TEST_ENV=tests/.env.docker
+ENV VERSITYGW_TEST_ENV=$CONFIG_FILE
 
-CMD ["tests/run_all.sh"]
\ No newline at end of file
+CMD ["tests/run_all.sh"]
diff --git a/tests/.env.s3.default b/tests/.env.s3.default
new file mode 100644
index 0000000..231cb67
--- /dev/null
+++ b/tests/.env.s3.default
@@ -0,0 +1,14 @@
+AWS_PROFILE=versity_s3
+AWS_ENDPOINT_URL=https://127.0.0.1:7070
+VERSITY_EXE=./versitygw
+RUN_VERSITYGW=true
+BACKEND=s3
+LOCAL_FOLDER=/tmp/gw
+BUCKET_ONE_NAME=versity-gwtest-bucket-one
+BUCKET_TWO_NAME=versity-gwtest-bucket-two
+#RECREATE_BUCKETS=true
+CERT=$PWD/cert.pem
+KEY=$PWD/versitygw.pem
+S3CMD_CONFIG=./tests/s3cfg.local.default
+SECRETS_FILE=./tests/.secrets.s3
+MC_ALIAS=versity
\ No newline at end of file
diff --git a/tests/s3cfg.local.default b/tests/s3cfg.local.default
index eab0a6b..d152d57 100644
--- a/tests/s3cfg.local.default
+++ b/tests/s3cfg.local.default
@@ -3,6 +3,7 @@ host_base = 127.0.0.1:7070
 host_bucket = 127.0.0.1:7070
 bucket_location = us-east-1
 use_https = True
+signurl_use_https = True
 
 # Enable S3 v4 signature APIs
 signature_v2 = False
diff --git a/tests/test_aws.sh b/tests/test_aws.sh
index 6618a6b..dc03203 100755
--- a/tests/test_aws.sh
+++ b/tests/test_aws.sh
@@ -315,3 +315,7 @@ source ./tests/test_common.sh
   delete_bucket_or_contents "aws" "$BUCKET_ONE_NAME"
   delete_test_files $bucket_file
 }
+
+@test "test-presigned-url-utf8-chars" {
+  test_common_presigned_url_utf8_chars "aws"
+}
diff --git a/tests/test_common.sh b/tests/test_common.sh
index f05c86b..0449fb4 100644
--- a/tests/test_common.sh
+++ b/tests/test_common.sh
@@ -256,3 +256,40 @@ test_common_multipart_upload() {
   delete_bucket_or_contents "$1" "$BUCKET_ONE_NAME"
   delete_test_files $bucket_file
 }
+
+test_common_presigned_url_utf8_chars() {
+
+  if [[ $# -ne 1 ]]; then
+    echo "presigned url command missing command type"
+    return 1
+  fi
+
+  local bucket_file="my-$%^&*;"
+  local bucket_file_copy="bucket-file-copy"
+  bucket_file_data="test file\n"
+
+  create_test_files "$bucket_file" || local created=$?
+  printf "%s" "$bucket_file_data" > "$test_file_folder"/"$bucket_file"
+  setup_bucket "$1" "$BUCKET_ONE_NAME" || local result=$?
+  [[ $result -eq 0 ]] || fail "Failed to create bucket '$BUCKET_ONE_NAME'"
+
+  put_object "$1" "$test_file_folder"/"$bucket_file" "$BUCKET_ONE_NAME"/"$bucket_file" || put_result=$?
+  [[ $put_result -eq 0 ]] || fail "Failed to add object $bucket_file"
+
+  create_presigned_url "$1" "$BUCKET_ONE_NAME" "$bucket_file" || presigned_result=$?
+  [[ $presigned_result -eq 0 ]] || fail "presigned url creation failure"
+
+  error=$(curl -k -v "$presigned_url" -o "$test_file_folder"/"$bucket_file_copy") || curl_result=$?
+  if [[ $curl_result -ne 0 ]]; then
+    fail "error downloading file with curl: $error"
+  fi
+  compare_files "$test_file_folder"/"$bucket_file" "$test_file_folder"/"$bucket_file_copy" || compare_result=$?
+  if [[ $compare_result -ne 0 ]]; then
+    echo "file one: $(cat "$test_file_folder"/"$bucket_file")"
+    echo "file two: $(cat "$test_file_folder"/"$bucket_file_copy")"
+    fail "files don't match"
+  fi
+
+  delete_bucket_or_contents "$1" "$BUCKET_ONE_NAME"
+  delete_test_files "$bucket_file" "$bucket_file_copy"
+}
diff --git a/tests/test_mc.sh b/tests/test_mc.sh
index 3c95001..e97f6a4 100755
--- a/tests/test_mc.sh
+++ b/tests/test_mc.sh
@@ -37,3 +37,7 @@ export RUN_MC=true
 @test "test_multipart_upload_mc" {
   test_common_multipart_upload "mc"
 }
+
+@test "test_presigned_url_utf8_chars_mc" {
+  test_common_presigned_url_utf8_chars "mc"
+}
diff --git a/tests/test_s3cmd.sh b/tests/test_s3cmd.sh
index f101d4e..a0a1b4b 100755
--- a/tests/test_s3cmd.sh
+++ b/tests/test_s3cmd.sh
@@ -31,4 +31,8 @@ export RUN_S3CMD=true
 
 @test "test_multipart_upload_s3cmd" {
   test_common_multipart_upload "s3cmd"
-}
\ No newline at end of file
+}
+
+#@test "test_presigned_url_utf8_chars_s3cmd" {
+#  test_common_presigned_url_utf8_chars "s3cmd"
+#}
\ No newline at end of file
diff --git a/tests/util.sh b/tests/util.sh
index 9ad7ed2..5e38a63 100644
--- a/tests/util.sh
+++ b/tests/util.sh
@@ -901,3 +901,28 @@ upload_part_copy() {
   etag=$(echo "$etag_json" | jq '.CopyPartResult.ETag')
   export etag
 }
+
+create_presigned_url() {
+  if [[ $# -ne 3 ]]; then
+    echo "create presigned url function requires command type, bucket, and filename"
+    return 1
+  fi
+
+  local presign_result=0
+  if [[ $1 == 'aws' ]]; then
+    presigned_url=$(aws s3 presign "s3://$2/$3" --expires-in 900) || presign_result=$?
+  elif [[ $1 == 's3cmd' ]]; then
+    presigned_url=$(s3cmd --no-check-certificate "${S3CMD_OPTS[@]}" signurl "s3://$2/$3" "$(echo "$(date +%s)" + 900 | bc)") || presign_result=$?
+  elif [[ $1 == 'mc' ]]; then
+    presigned_url_data=$(mc --insecure share download --recursive "$MC_ALIAS/$2/$3") || presign_result=$?
+    presigned_url="${presigned_url_data#*Share: }"
+  else
+    echo "unrecognized command type $1"
+    return 1
+  fi
+  if [[ $presign_result -ne 0 ]]; then
+    echo "error generating presigned url: $presigned_url"
+    return 1
+  fi
+  export presigned_url
+}
diff --git a/tests/versity.sh b/tests/versity.sh
index dbae359..ac57954 100644
--- a/tests/versity.sh
+++ b/tests/versity.sh
@@ -1,5 +1,30 @@
 #!/bin/bash
 
+source ./tests/util_file.sh
+
+check_exe_params_versity() {
+  if [ -z "$LOCAL_FOLDER" ]; then
+    echo "No local storage folder set"
+    return 1
+  elif [ -z "$VERSITY_EXE" ]; then
+    echo "No versity executable location set"
+    return 1
+  elif [ -z "$BACKEND" ]; then
+    echo "No backend parameter set (options: 'posix')"
+    return 1
+  fi
+  if [ "$BACKEND" == 's3' ]; then
+    if [ -z "$AWS_ACCESS_KEY_ID_TWO" ]; then
+      echo "missing second AWS access key ID for s3 backend"
+      return 1
+    fi
+    if [ -z "$AWS_SECRET_ACCESS_KEY_TWO" ]; then
+      echo "missing second AWS secret access key for s3 backend"
+      return 1
+    fi
+  fi
+}
+
 check_exe_params() {
   if [ -z "$AWS_ACCESS_KEY_ID" ]; then
     echo "No AWS access key set"
@@ -21,14 +46,9 @@ check_exe_params() {
     return 1
   fi
   if [[ $RUN_VERSITYGW == "true" ]]; then
-    if [ -z "$LOCAL_FOLDER" ]; then
-      echo "No local storage folder set"
-      return 1
-    elif [ -z "$VERSITY_EXE" ]; then
-      echo "No versity executable location set"
-      return 1
-    elif [ -z "$BACKEND" ]; then
-      echo "No backend parameter set (options: 'posix')"
+    local check_result
+    check_exe_params_versity || check_result=$?
+    if [[ $check_result -ne 0 ]]; then
       return 1
     fi
   fi
@@ -59,32 +79,142 @@ start_versity() {
   fi
 
   if [ "$RUN_VERSITYGW" == "true" ]; then
-    base_command="ROOT_ACCESS_KEY=$AWS_ACCESS_KEY_ID ROOT_SECRET_KEY=$AWS_SECRET_ACCESS_KEY VGW_REGION=$AWS_REGION $VERSITY_EXE"
-    if [ -n "$CERT" ] && [ -n "$KEY" ]; then
-      base_command+=" --cert $CERT --key $KEY"
+    run_versity_app || run_result=$?
+    if [[ $run_result -ne 0 ]]; then
+      echo "error starting versity apps"
+      return 1
     fi
-    base_command+=" $BACKEND $LOCAL_FOLDER &"
-    eval "$base_command"
-    versitygw_pid=$!
-
-    export versitygw_pid VERSITY_EXE BACKEND LOCAL_FOLDER
   fi
 
-  export versitygw_pid AWS_ACCESS_KEY_ID AWS_SECRET_ACCESS_KEY AWS_REGION AWS_PROFILE AWS_ENDPOINT_URL
+  export AWS_ACCESS_KEY_ID AWS_SECRET_ACCESS_KEY AWS_REGION AWS_PROFILE AWS_ENDPOINT_URL
+}
+
+start_versity_process() {
+  if [[ $# -ne 1 ]]; then
+    echo "start versity process function requires number"
+    return 1
+  fi
+  create_test_file_folder || create_result=$?
+  if [[ $create_result -ne 0 ]]; then
+    echo "error creating test log folder"
+    return 1
+  fi
+  base_command+=(">" "$test_file_folder/versity_log_$1.txt" "2>&1")
+  ("${base_command[@]}") &
+  if [[ $? -ne 0 ]]; then
+    echo "error running versitygw command: $(cat "$test_file_folder/versity_log_$1.txt")"
+    return 1
+  fi
+  eval versitygw_pid_"$1"=$!
+  local pid
+  eval pid=\$versitygw_pid_"$1"
+  sleep 1
+
+  local proc_check
+  check_result=$(kill -0 $pid 2>&1) || proc_check=$?
+  if [[ $proc_check -ne 0 ]]; then
+    echo "versitygw failed to start: $check_result"
+    echo "log data: $(cat "$test_file_folder/versity_log_$1.txt")"
+    return 1
+  fi
+  export versitygw_pid_"$1"
+}
+
+run_versity_app_posix() {
+  if [[ $# -ne 3 ]]; then
+    echo "run versity app w/posix command requires access ID, secret key, process number"
+    return 1
+  fi
+  base_command=("$VERSITY_EXE" --access="$1" --secret="$2" --region="$AWS_REGION")
+  if [ -n "$CERT" ] && [ -n "$KEY" ]; then
+    base_command+=(--cert "$CERT" --key "$KEY")
+  fi
+  base_command+=(posix "$LOCAL_FOLDER")
+  export base_command
+
+  local versity_result
+  start_versity_process "$3" || versity_result=$?
+  if [[ $versity_result -ne 0 ]]; then
+    echo "error starting versity process"
+    return 1
+  fi
+  return 0
+}
+
+run_versity_app_s3() {
+  if [[ $# -ne 1 ]]; then
+    echo "run versity app w/s3 command requires process number"
+    return 1
+  fi
+  base_command=("$VERSITY_EXE" --port=":7071" --access="$AWS_ACCESS_KEY_ID" --secret="$AWS_SECRET_ACCESS_KEY")
+  if [ -n "$CERT" ] && [ -n "$KEY" ]; then
+    base_command+=(--cert "$CERT" --key "$KEY")
+  fi
+  base_command+=(s3 --access="$AWS_ACCESS_KEY_ID_TWO" --secret="$AWS_SECRET_ACCESS_KEY_TWO" --region="$AWS_REGION" --endpoint=https://s3.amazonaws.com)
+  export base_command
+
+  local versity_result
+  start_versity_process "$1" || versity_result=$?
+  if [[ $versity_result -ne 0 ]]; then
+    echo "error starting versity process"
+    return 1
+  fi
+  return 0
+}
+
+run_versity_app() {
+  if [[ $BACKEND == 'posix' ]]; then
+    run_versity_app_posix "$AWS_ACCESS_KEY_ID" "$AWS_SECRET_ACCESS_KEY" "1" || result_one=$?
+    if [[ $result_one -ne 0 ]]; then
+      echo "error starting versity app"
+      return 1
+    fi
+  elif [[ $BACKEND == 's3' ]]; then
+    run_versity_app_posix "$AWS_ACCESS_KEY_ID" "$AWS_SECRET_ACCESS_KEY" "1" || result_one=$?
+    if [[ $result_one -ne 0 ]]; then
+      echo "error starting versity app"
+      return 1
+    fi
+    run_versity_app_s3 "2" || result_two=$?
+    if [[ $result_two -ne 0 ]]; then
+      echo "error starting second versity app"
+      return 1
+    fi
+  else
+    echo "unrecognized backend type $BACKEND"
+    return 1
+  fi
+}
+
+stop_single_process() {
+  if [[ $# -ne 1 ]]; then
+    echo "stop single process function requires process ID"
+    return 1
+  fi
+  if ps -p "$1" > /dev/null; then
+    kill "$1"
+    wait "$1" || true
+  else
+    echo "Process with PID $1 does not exist."
+  fi
 }
 
 stop_versity() {
   if [ "$RUN_VERSITYGW" == "false" ]; then
     return
   fi
-  if [ -n "$versitygw_pid" ]; then
-    if ps -p "$versitygw_pid" > /dev/null; then
-      kill "$versitygw_pid"
-      wait "$versitygw_pid" || true
-    else
-      echo "Process with PID $versitygw_pid does not exist."
+  local result_one
+  local result_two
+  # shellcheck disable=SC2154
+  stop_single_process "$versitygw_pid_1" || result_one=$?
+  if [[ $result_one -ne 0 ]]; then
+    echo "error stopping versity process"
+  fi
+  if [[ $BACKEND == 's3' ]]; then
+    # shellcheck disable=SC2154
+    stop_single_process "$versitygw_pid_2" || result_two=$?
+    if [[ $result_two -ne 0 ]]; then
+      echo "error stopping versity process two"
     fi
-  else
-    echo "versitygw_pid is not set or empty."
   fi
 }
\ No newline at end of file