20 Jan 2017 / Moving Beyond Borders - Mercari DAY

by Sotaro Karasawa

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Moving Beyond Borders mercari DAY #mercariday Sotaro Karasawa / @sotarok CTO, Executive Oﬃcer

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Welcome to #mercariday

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Engineering Team of Mercari

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San Francisco London Tokyo

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Tokyo 60+ Engineers • 2013೥~ • ϝϧΧϦͷ։ൃͷத৺ • ֤ڌ఺ͷӡ༻΋ߦ͏ • ࠾༻ɺڭҭɺ͢΂ͯͷ ։ൃ૊৫ͷػೳ

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San Francisco 8 Engineers • 2014೥~ • αʔϏεΛ "ϩʔΧϥ Πζ" ͢Δ • ݴޠ͚ͩͰͳ͘ɺจԽɺ श׳ͳͲΛؚΊͨϩʔ ΧϥΠζ

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London 4 Engineers • 2016೥~ • ৽ڌ఺ͰͷαʔϏεཱͪ ্͛ • ϩʔΧϥΠζ͸΋ͪΖΜ • ݱ஍ͷ๏ྩ౳ʹద߹ͤ͞ ΔͨΊ

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Project Teams • ϛογϣϯΛ࣋ͭνʔϜ • ྫ: ചΓखͷମݧΛ࠷ߴʹ͢ΔνʔϜ (Seller UX Team) • ͜ΕΒͷνʔϜ͕ɺશࣾͰ࢛൒ظ͝ͱʹఆΊΔ OKR (Key Objective) ʹ޲͔ͬͯ։ൃΛ͢Δ • νʔϜߏ੒ • 5-10 ਓఔ౓ͷ1νʔϜ • ϓϩμΫτϚωʔδϟʔɺϓϩσϡʔαʔɺΤϯδχΞɺQA • σβΠφʔͷΑ͏ͳԣ۲ͷνʔϜ͕ؔΘΔ

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Mission Speciﬁed Teams • SRE • Site Reliability Engineer • "͍ͭͰ΋ɺշదɺ҆৺ɺ҆શʹαʔϏεΛ࢖͑ΔΑ ͏ʹ͢Δ" νʔϜ • SET • Software Engineer in Test • ։ൃ؀ڥɺςετ؀ڥɺࣗಈςετͳͲɺΤϯδχϯ άͷྖҬ͔ΒϝϧΧϦͷ඼࣭Λࢧ͑Δ

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The Strategy and The Philosophy

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• ͳʹΑΓ΋ϢʔβʔʹՁ஋Λಧ͚Δ͜ͱΛ࠷༏ ઌʹ͢Δ • ٕज़͸΋ͪΖΜେࣄ • ͚ͩͲ "͜ͷٕज़Λ࢖͍͍͔ͨΒ" ͱ͍͏Ϟν ϕʔγϣϯͰ͸ͳ͍ • ͦΕͰͲΜͳՁ஋Λಧ͚Δ͔? ϓϩμΫτϑΝʔετ

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ਐΈͳ͕Β௚͢ • ։ൃΛଓ͚͍ͯΕ͹ɺ౰વ "ٕज़తෛ࠴" ΋ͭΈ͔ ͞ͳΔ • ΋ͪΖΜ͍ͭ΋ɺ"ͦͷͱ͖͸ਖ਼͍͠" • ௚͍͔ͯ͠ͳ͚Ε͹͍͚ͳ͍ ͔͠͠ɺॏཁͳͷ͸αʔϏεͱͯ͠੒௕͠ଓ͚Δ͜ͱ => ௚ͨ͢ΊʹาΈΛࢭΊͯ͠·ͬͨΒҙຯ͕ͳ͍ ... ܾண͕͍ͭͯ͠·͏

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దࡐదॴͷٕज़બ୒ • ಛఆٕज़΁ͷͩ͜ΘΓ͸ • ϓϩϑΣογϣφϧͱͯ͠ͷͩ͜ΘΓ͸΋ͪΖΜ ॏཁ • ͔ͦ͠͠Ε͸ԿΛ͢ΔͨΊ͔? Ͳ͏͋Δ΂͖͔ͩΒ ͳͷ͔? • PHP, Go, Swift, Objective-C, Java, Python ... etc. ͦͷ໰୊Λղܾ͢ΔͨΊʹඞཁͳٕज़͸ͳʹ͔?

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ϛογϣϯɾόϦϡʔ • ϝϧΧϦͷϛογϣϯ • ৽ͨͳՁ஋ΛੜΈͩ͢ੈքతͳϚʔέοτϓϨΠε Λ૑Δ • όϦϡʔ • Go Bold • All for One • Be Professional ͜ΕΒ͸ΤϯδχΞͱͯ͠΋ڞ௨ͷߦಈݪཧɾՁ஋؍

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Hiring Engineer

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• ίʔυΛݟΔ͜ͱͳ͘࠾༻Λ͠ͳ͍ • ·ͨɺݟΔ΂͖͸ "PHPྗ" ͳͲͷಛఆͷٕज़ ྖҬͷ஌ࣝͰ͸ͳ͍ • ಛఆͷٕज़ྖҬʹݶఆ͞Εͳ͍ɺઃܭྗɺൃ૝ ྗɺԠ༻ྗ ٕज़՝୊ͱٕज़໘઀

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• ʮΤϯδχΞܦݧͷ͋Δਓࣄʯ΍ʮͪΐͬͱΘ͔ ΔਓࣄʯͰ͸ͳ͘ɺΤϯδχΞ͕ਓࣄ • όϦόϦίʔυͷ͔͚ΔɺୈҰઢͰઓ͑ΔΤϯδ χΞ͕ϑϧίϛοτ • ީิऀʹͱͬͯ΋ɺϝϧΧϦͷ։ൃΛཧղ͠΍͢ ͘ັྗʹࢥͬͯ΋Β͑Δ ΤϯδχΞਓࣄ

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• ৽ଔ࠾༻Λ ϝʔϧΞυϨεͱ GitHub ͷ URL ͚ͩͰԠืͰ͖ΔΑ͏ʹͯ͠Έͨ • ఆܕจΛίϐϖͨ͠ཤྺॻΑΓ΋ɺ࠷΋Θ͔Γ ΍͍͢Ξ΢τϓοτ • (΋ͪΖΜࢦඪ͸ͦΕ͚ͩͰ͸ͳ͍͚ΕͲ) • ଞࣾͱҟͳΔ͜ͱΛࢼ͍ͯ͘͠ GitHub ΤϯτϦʔ

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Trainings and Careers

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• શһඞͣϝϯλʔΛ͚ͭΔ • ͳΜͰ΋ฉ͚Δઌഐࣾһ • ຖ೔ͷ 1on1 • ࠔͬͨ͜ͱɺ௚ͯ͠ཉ͍͜͠ͱ ϝϯλʔ

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• શһ CS ݚम • ϢʔβʔʹҰ൪͍ۙͱ͜ΖΛܦݧ͢Δ • ࣮ࡍʹCSۀ຿Λߦ͏ • SRE ݚम • ৽ଔ͸1ϲ݄·Δ·ΔSREͱͯ͠࢓ࣄ SREݚमɺCSݚम

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• ࢛൒ظ͝ͱͷϓϩδΣΫτ΁ͷߩݙʹՃ͑ɺٕ ज़ߩݙΛධՁ͢Δ • ϦϑΝΫλϦϯά΍υΩϡϝϯςʔγϣϯɺ৽ ͍ٕ͠ज़΁ͷτϥΠͳͲͳͲ ... • ٕज़తͳ՝୊ײͱɺͦΕ΁ͷऔΓ૊Έ ٕज़ධՁ

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ΩϟϦΞ ΤϯδχΞ ΤϯδχΞϦϯάϚωʔδϟʔ ϓϦϯγύϧΤϯδχΞ

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• ૊৫ͷ໘͔ΒϝϧΧϦͷΤϯδχΞϦϯάΛࢧ ͑Δ • ܦӦɺϓϩμΫτϚωʔδϟʔͱͷ։ൃ໘ͷΧ ΢ϯλʔύʔτ ΤϯδχΞϦϯάϚωʔδϟʔ

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• ϓϩϑΣογϣφϧ৬ • ٕज़ͷ໘͔ΒϝϧΧϦͷΤϯδχΞϦϯάΛࢧ ͑Δ • ಛఆ·ͨ͸ෳ਺ͷٕज़ྖҬͰͷ୎ӽٕͨ͠ज़ྗɺ ·ͨɺͦΕʹΑΔࣄۀߩݙ ϓϦϯγύϧΤϯδχΞ

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• άϨʔυ͸ಉ౳ • ࠷લઢͰ௒׆༂͢ΔΤϯδχΞ͸ɺܦӦਞͱಉ ͡ϨϕϧͷධՁΛ͏͚Δ ϚωʔδϟʔͱϓϦϯγύϧ

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ΤϯδχΞͷ ࣗൃతͳߦಈΛࢧԉ͢Δ੍౓ɾ؀ڥ

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• ϒϩάΛॻ͘͜ͱɺൃද͢Δ͜ͱ • ΧϯϑΝϨϯεͰͷൃද͸ɺւ֎Ͱ΋ࠃ಺Ͱ΋ɺ ͢΂ͯͷඅ༻Λෛ୲ɺ΋ͪΖΜग़ுѻ͍ Ξ΢τϓοτ͸ਖ਼ٛ

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• ʮւ֎ΧϯϑΝϨϯε΁ͷࢀՃʯ • (ௌߨऀͱͯ͠) • Ξ΢τϓοτ͍ͯ͠Δਓʹ͸ͦͷݖར͕͋Δ • ීஈ͔Βϒϩάॻ͘ɺOSS׆ಈɺษڧձͰͷൃදͳͲ • ౉ߤඅɺνέοτɺ॓ɺ͢΂ͯෛ୲ • ΋ͪΖΜग़ۈ೔ͱͯ͠ྑ͍ Ξ΢τϓοτ͢Δਓʹ͸ΠϯϓοτͷݖརΛ

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• ݄1೔ͷʮͳʹͯ͠΋ྑ͍೔ʯ • ϓϩδΣΫτҎ֎ͷ͜ͱʹऔΓ૊Ή • ϦϑΝΫλϦϯάɺυΩϡϝϯςʔγϣϯɺ৽͍͠ ٕज़΁ͷτϥΠɺϒϩάΛॻ͘ɺͳͲͳͲ • ͋Β͔͡Ί೔ΛఆΊΔ͜ͱͰߦಈΛى͜͠΍͘͢͢ ΔɺඇΤϯδχΞ͔Βͷڠྗ΋ಘ΍͍͢ Be Professional Day ࢀߟ: ޫ஗͍໰୊Λࠀ෰ͯ͠composerΛ10ഒ଎ͨ͘͠࿩ http://tech.mercari.com/entry/2016/02/01/164829

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• ݸਓͷςετ༻ΠϯελϯεɺΫϥ΢υ্ͷ৽αʔϏεΛࣗ ༝ʹ࢖͏͜ͱ͕Ͱ͖Δ • SSOαʔϏεΛར༻ͯ͠ɺձࣾΞΧ΢ϯτʹݸਓݸਓͷ؀ڥ Λఏڙ • ؾʹͳΔAWSαʔϏε΍GCPαʔϏεΛࢼ͢ ... ɺbot࡞Δ͔ ΒαʔόʔΛ ... ɺػցֶशࢼ͔͢ΒGPUΠϯελϯεΛ ... ͳͲ • ؾܰʹࢼ͢ → Կ͔ͭ͘Δ • ʮԿ͔Ϟϊ͕͋Δʯ͜ͱ͕ਓΛಈ͔͢ AWS ͱ GCP

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• ݸਓ৘ใɾϓϥΠόγʔ৘ใͷϚεΫ͞Εͨຊ ൪DBͷϨϓϦέʔγϣϯ • ੜͷσʔλΛ͙͢ʹѻ͑Δ • ͳΜͰ΋ूܭɺͳΜͰ΋ࢼ͢ • ݸਓςετ༻ AWS ͳͲ͔Β௚઀ͭͳ͛Δ anon db

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• ৽͍͠ MacBook Pro ΁ͷަ׵΋ͪΖΜOK ି༩PC͕͍ͭͰ΋ަ׵ՄೳʹͳΓ·ͨ͠ - ຊ࣭Λ ߟ͑ɺେ୾ʹϧʔϧվม http://mercan.mercari.com/entry/2016/12/05/140000 ି༩PC͍ͭͰ΋ަ׵OK (͓·͚)

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The Challenge

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• JP <- 9 hours -> UK <- 8 hours -> US • ཱࣗͨ͠νʔϜͰ͋Γͭͭίϛϡχέʔγϣϯ ΛͱΔ • Chromebox (Hangout༻STB) • ग़ு • ʮՈ͔ΒMTGࢀՃ͔ͯ͠Βग़ࣾ͠·͢ʯ ڌ఺Λ·͍ͨͩ։ൃνʔϜ

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• ι΢κ΢ࣾʮϝϧΧϦΞοςʯ • ࣠͸ϝϧΧϦɺ͚ͩͲ৽͍͠νϟϨϯδ΋ͯ͠ ͍͘ ࣄۀͷ֦େͱଟ֯Խ

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• ৽͍ٕ͠ज़΁ͷνϟϨϯδ • (΋ͪΖΜࣗൃతͰ͋Γͳ͕Β) • ͱΕΔબ୒ࢶ͕૿͑Δ • ΤϯδχΞΛҭͯΔ ٕज़ྖҬɺબ୒ͷଟ༷Խ

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• ڌ఺++ • ਓ਺++ • νʔϜ++ • ੈքతͳϚʔέοτϓϨΠεΛ࣮ݱ͢ΔͨΊʹ ඞཁͳ͜ͱ ϓϩμΫτνʔϜͷ֦େ

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Moving Beyond Borders

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• αʔϏεΛ೔ຊ͚ͩͰͳ͘ੈքͰల։͍ͯ͘͠ • ͦͷͨΊͷࠃڥΛ௒͑ͨ։ൃνʔϜΛ࡞͍ͬͯ ͘ • ͜Ε·Ͱ௒͑ΒΕͳ͔ͬͨ΋ͷΛ௒͍͑ͯ͘

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Today's Highlight

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15:00 This is mercari, This is a SRE. ࠤʑ໦ ݈Ұ 15:20 ඼࣭޲্ͷऔΓ૊Έ ླ໦ ঵ਅ 15:45 άϩʔόϧల։Λࢧ͑ΔྔࢠతͳαʔϏεઃܭ த໺ ୓ 16:05 ΞϓϦϑΝʔετͷӨͰؤுΔWebͷ࿩ ࡔຊ ݁ҥ 16:30 ϝϧΧϦiOSΞϓϦ։ൃͷݱঢ়ͱ͜Ε͔Β ੴ઒ ௚थ 16:50 High ҙࣝ Android ߴࢁ ੐େ 17:15 ΤϯδχΞͷ૊৫ͱ࠾༻ ύωϥʔɿ৽Ҫ ܒଠ/௽Ԭ ୡ໵/ֿݪ ݡ༞ ϞσϨʔλʔɿฑ୔ ૱ଠ࿠

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17:15 ΤϯδχΞͷ૊৫ͱ࠾༻ ύωϧσΟεΧογϣϯ ฉ͖͍ͨ͜ͱड෇த http://bit.ly/merday-qa

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#mercariday