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Buildingacollaborative
engineeringcultureatSiemens
OpenSource@西門子2025
2025年10月30日
Unrestricted|?Siemens2025|RogerMeier|
Aboutme
GrewupinthelittletownofFlimsintheSwissAlps,askiresort.
Insteadofworkingwithintourismbusiness,
movedtoZürich,thebiggestcityin
Switzerland,and
nowliveinatown15minutesfromZürich.
RogerMeier
DistinguishedEngineer
ServiceOwner
r.meier@siemens.co
m
/author/roger-meie
r/
ActiveinOpenSourcesincethelastmillennium,ascontributorandmaintaineronseveralprojects.
AtSiemenssince2004,incomputersystemengineering,kernelanduserspace,web,softwareandsystem
architectureformultipleproductlines.Thelastfewyearsfocusingon,InnerandOpenSource.
Ienjoycollaboratingwithpeopleacrosstheglobe
and
Iloveengineering!
Unrestricted|?Siemens2025|RogerMeier|
Unrestricted|?Siemens2025|RogerMeier|
BeispielederSiemensAGaus
Unrestricted|?Siemens2025|RogerMeier|
Wecommuteincarsdesigned,withSiemenssoftware...
Industrie
…builtinfactoriesrunningonSiemensautomation...
…andchargedbyaSiemenssmartgrid.
BeispielederSiemensAGaus
Weworkinsmartbuildingsthat
Unrestricted|?Siemens2025|RogerMeier|
promoteourhealthandsafety…
Infrastruktur
…thatuseenergy
withmaximumefficiency...
…andconnectthephysicalandthedigitalworkplace.
BeispielederSiemensAGaus
Unrestricted|?Siemens2025|RogerMeier|
WebookourtrainticketswithSiemenssoftware…
Mobilit?t
…totravelontrainsmadebySiemens...
…operatedwithSiemens
infrastructuretechnology.
Unrestricted|?Siemens2025|RogerMeier|
MaturityforOpenSourceAdoption
ImageSource:
/blog/reaching-higher-levels-open-source-maturity/
Upstreamfirst!
?Contributebugfixesorfeaturesbacktothecommunity!
?It’sagiveandtake!
Otherwise:
?Short-termfixes/patches
?Noreviewbythemaintainers
?Veryexpensivemid-andlong-
termsolutions,portingfeaturesisheavyworkthatcouldtake
months
?Nochancetodeliversecurityfixesinatimelymanner
?Difficulttobenefitfromnewfeaturesorbugfixes
Why?Domorewiththesamebudget,attracttalents,innovatefaster,reducemaintenanceeffortsandhavefun!
Unrestricted|?Siemens2025|RogerMeier|
Unrestricted|?Siemens2025|RogerMeier|
-DevOpsatscale
Socialcodingplatformtocollaborateoncodewithinminutes.
?>300kbuilds/day
?>84kusers,>77countries
?>30MAPIrequests/day
?>1Mmergerequests/year
?0€licensefees→OpenSource
?Noclassichelpdesk→community
Thousandsofourproductsand
Unrestricted|?Siemens2025|RogerMeier|
solutionsaredevelopedanddeployedusing.
Fordevelopers,fromdevelopers
Theinternalbrandstartedwithone“l(fā)ike”
?Arecognizablenameisimportant
?Establishanambassadorcircle
?Communityidentifiesitselfwithbrand
?Knownpeoplebehindthebrand
Wedohavestickers...
Unrestricted|?Siemens2025|RogerMeier|
NoHelpDesk
Unrestricted|?Siemens2025|RogerMeier|
Fordevelopers,Fromdevelopers
?DocumentationPortal
?Issuetracker
?InternalSocialNetwork
?“HelpYourself”
Greatengagementwithinthecommunity
UpstreamFirst-NoPatches
Unrestricted|?Siemens2025|RogerMeier|
ContributionstoGitLabbycompany
?Wedeployonaregularbasis
?Weonlydeployfromupstream
?Weextendwhatwe’reusing
?WecontributetotheecosystemaroundGitLab
>350mergerequeststoGitLab
12electionsasGitLabMVP(mostvaluableperson)withinthecrew
InnerSource-ApplytheOpenSourceprinciplesin-house
Internal:Yearlysummit
?Provideastageforprojects?5theditionin2025
Unrestricted|?Siemens2025|RogerMeier|
/space
/
developers
/
InternalPortalwithinsights
Someexamples:
?
?Somecomponents:>1.5kre-uses
?ManagedLinuxclient
?CommonUIcomponents
Ifyou’reabletocollaboratein-house,thenyouarereadyforOpenSource.GetexperiencedOpenSource
developerstoaccelerate.
InnerSourcePatterns-WalktheInnerSourcetalk
AtSiemens,whentheInnerSourcejourneybegan,theearlycontributorsweredeeplyinspiredbytheOpenSourceculture.Forthem,settingupanInner
Sourceplatformwasn’tastretch;itwasanaturalcontinuationofhowthey
alreadyworked:asynchronouslyacrosslocations,sharingideasthroughissues,anddocumentingdecisionstransparently.
ThisOpenSource-inspiredmindsetgavetheInnerSourceplatforma
distinctlydifferentcharacter-transparent,collaborative,anddeveloper-friendly-comparedtotheclosed,proprietaryenvironmentsmanydeveloperswereusedto.
/InnerSourceCommons/InnerSourcePatterns/blob/main/patterns
/
1-initial/wa
l
k-t
h
e-innersour
c
e-talk.m
d
Unrestricted|?Siemens2025|RogerMeier|
-Upstreamwork
Unrestricted|?Siemens2025|RogerMeier|
16.1
~600commitsfromthecrewtoOpenSourceprojectsinthelastyear
NoteworthyGitLabcontributions
?Protectedpackagesandprotectedcontainerregistry
?Supportforstructuredtext/SCLsyntaxhighlightingtogetherwithMartinWaitz(Mobility)
?IPv6fixestobringittooursharedrunners?Unifiedtokenrevokeendpoint
UpcomingTopics
?Step-upauthenticationatgrouplevel?Tokenprefixforalltokentypes
?See
/gitla
b
-org/gitlab
/-
/merge_requests?search=siemen
s
Unrestricted|?Siemens2025|RogerMeier|
OpenSource–Eventseries
2014-2016
OpenSource@BTinZug
2017-2019
OpenSource@BTattheGALVANIK
2020–2025+
OpenSource@SiemensatGALVANIK
?Nobodyrequestedtostartaneventseries.Ifyoubelievein
something,doitandformanalliancewithlike-mindedpeople!
?Startedasinternalonly,nowstreamedtothepublicandwithabout120peopleon-site(speakersandguests).
?Focusontechnologyandcollaborationculture,nosales!
?BalancedmixofexternalandSiemensspeakers
?Callforpresentationsforthenexteventin2026willbepublishedearlynextyear:
/events/2026/
Unrestricted|?Siemens2025|RogerMeier|
Unrestricted|?Siemens2025|RogerMeier|
First,westartedwithaverybasiceventwebsite.
NowwehaveallourOpenSource-relatedtopicsinoneportal.
AllslidesfromOpenSource@西門子willbepublishedthereaswell!
Unrestricted|?Siemens2025|RogerMeier|
EmbeddedLinuxDevelopers–AmazingUpstreamWork!
Congratulationsto
?CommonControllerPlatform(CCP)teamatSI
?LinuxExpertCenteratFTRPD
?andothers
Unrestricted|?Siemens2025|RogerMeier|
Unrestricted|?Siemens2025|RogerMeier|
Fordevelopers:GetAPIkey,ConfigureIDE,useit
?Everyonecangetstartedinlessthan5minutes
?AlldatastayswithinSiemens
?OpenSourceIDEplugins:continue.dev,Cline,...
?OpenAIcompatibleAPI
Unrestricted|?Siemens2025|RogerMeier|
Oursetup,entirelybasedonOpenSourceandin-house
OpenSourceappsandtools
Selfdevelopedappsandtools
Key
Self-service
OpenAIcompatibleAPI
Ofcourse,alsowithintheAIarea,numerouscontributionsfromourteamtotheOpenSourceprojects.
@code-aibot
APIGateway
LLMWorkerLLM
context
LLMWorkerLLM
LLMProxy
Code-AppsChatbot
LLMWorkerLLM
AIenabledservicesonAWSSustainableAIatHQZug
?
/2024/04/open-source-llms-for-everyon
e/
?
/2025/10/our-sovereign-
a
i-journey-building
-
a-se
l
f-contained-sustainab
l
e-and-co
s
t-effective-ll
m
-platform
/
Unrestricted|?Siemens2025|RogerMeier|
SustainableAIonourclimate-neutralcampus
Unrestricted|?Siemens2025|RogerMeier|
AIassisteddevelopmentandenablementwiththeCodeAIproject
Openweightmodels
areon-parwithcommercialmodels!
ValueforSiemens
?ProvidecosteffectiveandsustainableAIforeveryonewithin-houseGPUs
?Siemenscontextandcodeawareness
?Useforanykindofdataincludingstrongconfidential
?In-housecollaborationknowledge
sharingtomasterthetechnologyend-to-end
?Deploynewmodelswithindays
?Fullstackunderourcontrol,adaptable
toourneeds(e.g.,securityandplagiarism
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