<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:019dd101-cc20-76b7-9e65-eeae9a186a5c,g:859624f3-8f45-4917-8284-e4edb943801d-->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:roleRef roleURI="http://www.uct.com/role/Cover" xlink:type="simple" xlink:href="uctt-20260428.xsd#Cover"/>
  <link:presentationLink xlink:role="http://www.uct.com/role/Cover" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_dei_CoverAbstract_019dd101-cc20-717c-97e5-03d5cc7b5f5b" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_CoverAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentType_019dd101-cc20-77b1-8f08-1a0b753b89de" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentType"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019dd101-cc20-717c-97e5-03d5cc7b5f5b" xlink:to="loc_dei_DocumentType_019dd101-cc20-77b1-8f08-1a0b753b89de" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentPeriodEndDate_019dd101-cc20-7287-9724-1b33256ee1ee" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentPeriodEndDate"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019dd101-cc20-717c-97e5-03d5cc7b5f5b" xlink:to="loc_dei_DocumentPeriodEndDate_019dd101-cc20-7287-9724-1b33256ee1ee" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityRegistrantName_019dd101-cc20-7ffc-ab1f-9108632a877a" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityRegistrantName"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019dd101-cc20-717c-97e5-03d5cc7b5f5b" xlink:to="loc_dei_EntityRegistrantName_019dd101-cc20-7ffc-ab1f-9108632a877a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityIncorporationStateCountryCode_019dd101-cc20-7207-9615-71538f93cb90" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityIncorporationStateCountryCode"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019dd101-cc20-717c-97e5-03d5cc7b5f5b" xlink:to="loc_dei_EntityIncorporationStateCountryCode_019dd101-cc20-7207-9615-71538f93cb90" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityFileNumber_019dd101-cc20-763e-a700-e855c475051a" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityFileNumber"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019dd101-cc20-717c-97e5-03d5cc7b5f5b" xlink:to="loc_dei_EntityFileNumber_019dd101-cc20-763e-a700-e855c475051a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityTaxIdentificationNumber_019dd101-cc20-710b-8bb3-62c18cbbd852" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityTaxIdentificationNumber"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019dd101-cc20-717c-97e5-03d5cc7b5f5b" xlink:to="loc_dei_EntityTaxIdentificationNumber_019dd101-cc20-710b-8bb3-62c18cbbd852" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine1_019dd101-cc20-70ce-bdcc-75bd0cf06cf7" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressAddressLine1"/>
    <link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019dd101-cc20-717c-97e5-03d5cc7b5f5b" xlink:to="loc_dei_EntityAddressAddressLine1_019dd101-cc20-70ce-bdcc-75bd0cf06cf7" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressCityOrTown_019dd101-cc20-7c00-bec8-3f06053b8c7a" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressCityOrTown"/>
    <link:presentationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019dd101-cc20-717c-97e5-03d5cc7b5f5b" xlink:to="loc_dei_EntityAddressCityOrTown_019dd101-cc20-7c00-bec8-3f06053b8c7a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressStateOrProvince_019dd101-cc20-7f12-8706-020a92845e4c" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressStateOrProvince"/>
    <link:presentationArc order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019dd101-cc20-717c-97e5-03d5cc7b5f5b" xlink:to="loc_dei_EntityAddressStateOrProvince_019dd101-cc20-7f12-8706-020a92845e4c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressPostalZipCode_019dd101-cc20-773a-92fd-1c6c626e79f7" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressPostalZipCode"/>
    <link:presentationArc order="10" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019dd101-cc20-717c-97e5-03d5cc7b5f5b" xlink:to="loc_dei_EntityAddressPostalZipCode_019dd101-cc20-773a-92fd-1c6c626e79f7" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_CityAreaCode_019dd101-cc20-7de7-8eae-b3a90a03ae6c" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_CityAreaCode"/>
    <link:presentationArc order="11" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019dd101-cc20-717c-97e5-03d5cc7b5f5b" xlink:to="loc_dei_CityAreaCode_019dd101-cc20-7de7-8eae-b3a90a03ae6c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LocalPhoneNumber_019dd101-cc20-79cd-95bc-407f33bee43e" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LocalPhoneNumber"/>
    <link:presentationArc order="12" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019dd101-cc20-717c-97e5-03d5cc7b5f5b" xlink:to="loc_dei_LocalPhoneNumber_019dd101-cc20-79cd-95bc-407f33bee43e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_WrittenCommunications_019dd101-cc20-7e98-adab-71f6b6f14c8f" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_WrittenCommunications"/>
    <link:presentationArc order="13" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019dd101-cc20-717c-97e5-03d5cc7b5f5b" xlink:to="loc_dei_WrittenCommunications_019dd101-cc20-7e98-adab-71f6b6f14c8f" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SolicitingMaterial_019dd101-cc20-7a35-b379-ec4bf03ed4c1" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_SolicitingMaterial"/>
    <link:presentationArc order="14" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019dd101-cc20-717c-97e5-03d5cc7b5f5b" xlink:to="loc_dei_SolicitingMaterial_019dd101-cc20-7a35-b379-ec4bf03ed4c1" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_PreCommencementTenderOffer_019dd101-cc20-77a9-ae05-e06c372b8417" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_PreCommencementTenderOffer"/>
    <link:presentationArc order="15" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019dd101-cc20-717c-97e5-03d5cc7b5f5b" xlink:to="loc_dei_PreCommencementTenderOffer_019dd101-cc20-77a9-ae05-e06c372b8417" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_PreCommencementIssuerTenderOffer_019dd101-cc20-77e3-b88f-3e2c6c604702" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_PreCommencementIssuerTenderOffer"/>
    <link:presentationArc order="16" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019dd101-cc20-717c-97e5-03d5cc7b5f5b" xlink:to="loc_dei_PreCommencementIssuerTenderOffer_019dd101-cc20-77e3-b88f-3e2c6c604702" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_Security12bTitle_019dd101-cc20-7ea0-98cc-c1ac69cc3916" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_Security12bTitle"/>
    <link:presentationArc order="17" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019dd101-cc20-717c-97e5-03d5cc7b5f5b" xlink:to="loc_dei_Security12bTitle_019dd101-cc20-7ea0-98cc-c1ac69cc3916" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_TradingSymbol_019dd101-cc20-7217-aed8-ad476f6198eb" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_TradingSymbol"/>
    <link:presentationArc order="18" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019dd101-cc20-717c-97e5-03d5cc7b5f5b" xlink:to="loc_dei_TradingSymbol_019dd101-cc20-7217-aed8-ad476f6198eb" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SecurityExchangeName_019dd101-cc20-70ae-80ae-f25d6f46e711" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_SecurityExchangeName"/>
    <link:presentationArc order="19" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019dd101-cc20-717c-97e5-03d5cc7b5f5b" xlink:to="loc_dei_SecurityExchangeName_019dd101-cc20-70ae-80ae-f25d6f46e711" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityEmergingGrowthCompany_019dd101-cc20-7250-b320-f554aadc159a" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityEmergingGrowthCompany"/>
    <link:presentationArc order="20" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019dd101-cc20-717c-97e5-03d5cc7b5f5b" xlink:to="loc_dei_EntityEmergingGrowthCompany_019dd101-cc20-7250-b320-f554aadc159a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_AmendmentFlag_019dd101-cc20-73b4-9367-a2f8d6d287ae" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_AmendmentFlag"/>
    <link:presentationArc order="21" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019dd101-cc20-717c-97e5-03d5cc7b5f5b" xlink:to="loc_dei_AmendmentFlag_019dd101-cc20-73b4-9367-a2f8d6d287ae" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCentralIndexKey_019dd101-cc20-7ae5-9615-880ac2f365f5" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityCentralIndexKey"/>
    <link:presentationArc order="22" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019dd101-cc20-717c-97e5-03d5cc7b5f5b" xlink:to="loc_dei_EntityCentralIndexKey_019dd101-cc20-7ae5-9615-880ac2f365f5" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
</link:linkbase>