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੒ా Ұੜ ࣥߦ໾ CTO Beyond the Boundaries Cookpad Inc. Feb 10th, 2018

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2018 8

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શੈքͰ ໿݄ؒ9,000ສਓ 10

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ࠓ΋ੈքͷͲ͔͜Ͱ ྉཧָ͕͘͠ͳΔମݧ͕ 11

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ྉཧʹͱͬͯͷ
 Πϯλʔωοτ
 ͱ͸Կͩͬͨͷ͔ 12

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ٕज़Λਖ਼͘͠ཧղ͠
 ʮ;ͭ͏ʹ࢖͏ʯ 13

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ٕज़ελοΫ
 2018 14

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18 3FBDU/BUJWF 'JSFCBTF NEW NEW

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19 "84&$4 )BLP IUUQTHJUIVCDPNFBHMFUNUIBLP

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Ruby 20

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2ਓ໨ͷRuby։ൃऀ(ϑϧλΠϜ)͕δϣΠϯ 21 ࡫ాߞҰ ԕ౻ါհ NEW

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ΫοΫύουͷ Ruby ΁ͷߩݙ Ruby 2.5 (2017/12) • VM ͷߴ଎Խʢ஗ԆProcੜ੒ɺtrace໋ྩ࡟আͳͲʣʢ࡫ాʣ • ந৅ߏจ໦ͷ࠶ߏஙɺ෼ذΧόϨοδͷ௥Ճʢԕ౻ʣ Ruby 3 (2020?) • ฒྻฒߦػߏʢ࡫ాʣ • ੩తղੳʢԕ౻ʣ 22 ϑϧλΠϜRuby։ൃऀ͕ೋਓฒΜͰ։ൃ͍ͯ͠Δͷ͸্࢙ॳ NEW

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ࣗ෼ͨͪͷಓ۩͸
 ࣗ෼ͨͪͰ
 ࣋ଓՄೳʹ͢Δ 23

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จԽ 24

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Beyond the Boundaries 25

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஌Βͣ஌Βͣͷ͏ͪʹ
 ʮࣗ෼ʹ͸ͦΕ͸Ͱ͖ͳ͍ʯ
 ʮࣗ෼ͷ੹೚Ͱ͸ͳ͍ʯ
 ͱࣗΒҾ͍ͯ͠·͍ͬͯΔڥք 26 #PVOEBSJFT

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ΤϯδχΞߦಈنൣ "Beyond The Boundaries" (ڥքΛ௒͑Δ) • ໾ׂʹର͢Δࢥ͍ࠐΈ • ࣗ෼ࣗ਎ͷٕज़ྗ • OSS ΁ͷίϯτϦϏϡʔτ • ݴޠɺࠃڥ • ৽نࣄۀ΁ͷ௅ઓ 27 ʮڥքʯΛೝࣝ͠ɺ৐Γӽ͑Δڧ͍૊৫΁ NEW

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28 ৽ଔ೥໨ ৽ଔ೥໨ ৽ଔ೥໨ ৽ଔ೥໨

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Amazon Echo ೔ຊϩʔϯν࣌ʹΫοΫύου Alexa εΩϧΛϦϦʔε 29 IUUQDBSFFSIBDLFOKBQBODPNSFQPSUEFUBJM ৽ଔ೥໨ ࢁాྑ໌ ͕ਓͰ։ൃ NEW

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ςοΫϦʔυ੍౓ 30

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ςοΫϦʔυ੍౓ • ٕज़બఆ • ίʔυϨϏϡʔ • ϝϯλϦϯά • ΤϯδχΞධՁ 31 ෦໳ͷதͷϛχ"CTO" NEW

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32 Hackarade: શΤϯδχΞࢀՃͷϋοΧιϯ

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࠲ֶ + Hack Λ1೔ͰΈͬͪΓ΍Δ ීஈ৮ΕΔػձͷͳ͍ٕज़ʹ৮ΕΔ • ୈ1ճ: Ruby ΠϯλϓϦλ (MRI) ։ൃ • ୈ2ճ: ػցֶश • ୈ3ճ: ࣾ಺ISUCON (αʔόαΠυνϡʔχϯά) Hackarade: શΤϯδχΞࢀՃͷϋοΧιϯ NEW

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ຖ೔ͷྉཧΛָ͠Έʹ͢Δ 34

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ྉཧΛָ͠Ήਓ͕
 ΋ͬͱΫϦΤΠςΟϒʹ
 ͳΕΔ৔ॴ΁ 35

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ݟΔྉཧಈը͔Βɺࡱָͬͯ͠Ήྉཧಈը΁ • Ϩγϐ౤ߘऀ͕ແྉͰར༻Ͱ͖Δ
 ྉཧಈըࡱӨελδΦ • ୭Ͱ΋؆୯ʹϓϩͷΑ͏ͳಈըʹ • ॱ࣍શࠃల։༧ఆ 38 cookpad studio ୅׭ࢁ NEW

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ࠃڥΛ௒͑ͯ 39

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Bristol ΦϑΟε 40 NEW

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41 -POEPO #SJTUPM

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ʮࠓ೔ͳʹ࡞Ζ͏ʁʯ Λ௒͑ͯ 46

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৯ͱྉཧͷ՝୊ 47

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48 ڞಇ͖ͷ૿Ճ ୯਎ऀͷ૿Ճ ߴྸऀͷ Ұਓ฻Β͠ ඇߦͷ૿Ճ ྉཧεΩϧ ͷݮগ ྉཧจԽ͕ Ոఉ಺Ͱ ఻ঝ͞Εͳ͍ ๩͘͠ ੈଳௐཧ࣌ؒ ͷݮগ ௐཧεΩϧ ͷݮগ ௐཧͷश׳Խ͕ ͞Εͳ͍ ֎৯ɾத৯ͳͲ Ճ޻৯඼΁ґଘ ྉཧͷࣾձత ೝ஌ɾ஍Ґ ͷ௿Լ ࡉ೶Ո ͷࠔځ ͷຄڵ ޻ۀԽ ݽ৯ͷ૿Ճ ࢠͲ΋ɾ୯਎ऀ

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49 ֩Ո଒Խ ౎ࢢʹ͓͍ͯ࣌ؒͷ ࢖͍ಓ ʢPS࢖͍ํʣ ͷ ڝ߹͕ଟ͍ ڞಇ͖ͷ૿Ճ Ոఉʹ͓͚Δ ૯࿨࣌ؒͷݮগ ୯਎ऀͷ૿Ճ ߴྸऀͷ Ұਓ฻Β͠ ॴಘͷೋۃԽ ඇߦͷ૿Ճ ྉཧεΩϧ ͷݮগ ྉཧจԽ͕ Ոఉ಺Ͱ ఻ঝ͞Εͳ͍ ஍ํͷաૄԽͱ ίϛϡχςΟ ͷ૕ࣦ ๩͘͠ ੈଳௐཧ࣌ؒ ͷݮগ ௐཧεΩϧ ͷݮগ ௐཧͷश׳Խ͕ ͞Εͳ͍ ֎৯ɾத৯ͳͲ Ճ޻৯඼΁ґଘ ௿௞ۚ ࿑ಇ ݈߁ण໋ ͷ୹ॖԽ ྉཧͷࣾձత ೝ஌ɾ஍Ґ ͷ௿Լ ྉཧ΁ͷ ڵຯͷ௿Լ ྉཧจԽͷ ૕ࣦ ྵࡉ೶Ո ͷࠔځ ৯ࡐͷ ύοέʔδ ঎඼Խ େن໛ εʔύʔϞʔϧ ͷຄڵ ৯࢈ۀ ͷ޻ۀԽ ֨ ϧ ࡐͷ ɾൢച ըҰԽ ಉ͡৯ࡐ͕ ৯ྉ඼ళʹฒͿ ݽ৯ͷ૿Ճ ࢠͲ΋ɾ୯਎ऀ

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50 ৯ͷܦࡁγεςϜ ৯ͷจԽ ੈ ք ݸ ਓ ΞϨϧΪʔ ͷ૿Ճ ࣾձ՝୊ ྉཧʹؔ͢Δ ݱ৅ ຌྫ ࢠͲ΋ͷංຬ ֩Ո଒Խ ౎ࢢʹ͓͍ͯ࣌ؒͷ ࢖͍ಓ ʢPS࢖͍ํʣ ͷ ڝ߹͕ଟ͍ ͪΌΜͱ ྉཧΛ͠ͳ͍͜ͱ ʹର͢ΔແҙࣝԼ ͷࡑѱײ จԽతՁ஋ ͷྼޙ ྉཧ͸ঁੑ͕ ΍Δ΂͖ͩͱ͍͏ ࣾձతՁ஋؍ ڇͷࣂྉͷ େྔੜ࢈ ؀ڥഁյ ࢿຊओٛʹΑΔ ࢢ৔ݪཧγεςϜ 850 ʹ͓͚Δ ࣗ༝๵қମ੍ ϑʔυϩεͷ ૿Ճ (.0 ٕज़ʹΑΔ େن໛೶ۀԽ ԕ༸ړۀ ʹΑΔཚ֫ ڞಇ͖ͷ૿Ճ Ոఉʹ͓͚Δ ૯࿨࣌ؒͷݮগ ୯਎ऀͷ૿Ճ ߴྸऀͷ Ұਓ฻Β͠ ॴಘͷೋۃԽ ඇߦͷ૿Ճ ৯ࡐͷߴಅ څ৯ͷఀࢭ ྉཧεΩϧ ͷݮগ ྉཧจԽ͕ Ոఉ಺Ͱ ఻ঝ͞Εͳ͍ ஍ํͷաૄԽͱ ίϛϡχςΟ ͷ૕ࣦ ౎ࢢԽ ౎ࢢ΁ͷਓޱूத Ոఉͱ஍ҬͰ ա࣌ؒ͢͝ ͷݮগ ۚમՁ஋΁ͷ ґଘ ๩͘͠ ੈଳௐཧ࣌ؒ ͷݮগ ௐཧεΩϧ ͷݮগ ௐཧͷश׳Խ͕ ͞Εͳ͍ ֎৯ɾத৯ͳͲ Ճ޻৯඼΁ґଘ ౎ࢢԽͱ஍Ҭ ίϛϡχςΟͷ ૕ࣦ ෆ݈߁ ͳ৯ੜ׆ ֎৯ɾத৯ͳͲͷ Ճ޻৯඼΁ґଘ ௐཧεΩϧ ͷݮগ ௿௞ۚ ࿑ಇ ௿ॴಘऀ૚ ͷෆ݈߁ ೱ͍ຯ΁ͷ ཉٻ͕૿Ճ ຯ֮ຑᙺ ͷਐߦ ݈߁ण໋ ͷ୹ॖԽ ຯ֮ຑᙺ ྉཧͷࣾձత ೝ஌ɾ஍Ґ ͷ௿Լ ങ͍෺ͷ ָ͠Έͷݮগ ྉཧ΁ͷ ڵຯͷ௿Լ ྉཧจԽͷ ૕ࣦ ۚમՁ஋Ҏ֎ͷ Ձ஋ྼޙԽ (%1 ͷ ܦࡁࢦඪԽ Ոఉʹ͓͚Δ ΞϯϖΠυϫʔΫ ͷ௿ධՁ ྉཧՁ஋ ͷ௿ධՁ ྉཧՁ஋ͷ ඇφϥςΟϒԽ ྵࡉ೶Ո ͷࠔځ ৯ࡐͷ ύοέʔδ ঎඼Խ େن໛ εʔύʔϞʔϧ ͷຄڵ ৯඼Ճ޻೑ ͷେྔੜ࢈ ৯࢈ۀ ͷ޻ۀԽ ৯ੜ࢈ͷ େن໛Խ ৯ੜ࢈ͷ ஍Ҭతภࡏ ΧϩϦʔχʔζ ͷ૿Ճ ੈքਓޱͷ૿Ճ ੈքਓޱ૿Ճͱ ৯ੜ࢈ͷେن໛Խ +"ɾ೶ڠ ͳͲʹΑΔՁ֨ ίϯτϩʔϧ ৯ࡐͷ ྲྀ௨ɾൢച ͷըҰԽ ಉ͡৯ࡐ͕ ৯ྉ඼ళʹฒͿ ੜ࢈ऀ ʢ೶Ո ɾ ړࢣͳͲʣ ͕ѻ͏ଟ༷ͳ ඼छΛѻΘͳ͍ ৯ҭͷػձ ͷݮগ ੜ࢈ͱফඅ͕ ཭ΕΔ ݽ৯ͷ૿Ճ ࢠͲ΋ɾ୯਎ऀ ৯ͱྉཧʹ·ͭΘΔ ࣾձ՝୊Ϛοϓ ɹ͜ͷϚο ϓ͸ɺ ৯ͱྉཧʹؔ͢Δࣾձ՝୊Λɺ ՝୊ಉ࢜ͷؔ܎ੑʹண໨ͯ͠੔ཧͨ͠΋ͷͰ͢ɻ ੔ཧͨ݁͠Ռɺ Ոఉʹ͓͚ΔྉཧʹӨڹΛ༩͑Δ͍͘ ͔ͭͷѱ॥؀͕͋Δ͜ͱ͕෼͔Γ·ͨ͠ɻ ɹԣ࣠Ͱ͸ɺ ͦͷѱ॥؀͕ى͍ͬͯ͜ΔγεςϜͷن໛Λੈք͔Βݸਓ·Ͱද͠ɺ ॎ࣠Ͱ͸ɺ ৯ͷ ܦࡁγεςϜʹؔΘΔ໨ʹݟ͑ΔαΠ Ϋϧͱɺ ͦͷഎܠͰى͍ͬͯ͜Δ৯ͷจԽʹؔΘΔ໨ʹݟ͑ ͳ͍αΠ Ϋϧʹ෼ྨ͠·ͨ͠ɻ

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ΤϯδχΞɾσβΠφʔ Λੵۃ࠾༻͍ͯ͠·͢ 51 ৯ͱྉཧͷ՝୊Λղܾ͢Δ https://cookpad.jobs/

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ຊ೔͸͝དྷ৔
 Ͳ͏΋͋Γ͕ͱ͏͍͟͝·ͨ͠ʂ