エンジニアとして「事業」作りに関わるということ

by Amane

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ΤϯδχΞͱͯ͠ ʮࣄۀʯ ࡞ΓʹؔΘΔͱ͍͏͜ͱ 2024.1.20@burikaigi Ҫ্ प/INOUE Amane (@isaka1022)

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ຊ೔͓࿩͢Δ͜ͱ

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ΤϯδχΞΛ3೥Ίʹͯ͠ ৽نࣄۀͰͷϓϩμΫτ։ൃΛ 1೥ߦͬͯಘΒΕֶͨͼ ʹ ৽نࣄۀʹ͓͚Δ ΤϯδχΞͷ໾ׂͬͯ͜͏͍͏͜ͱʁ

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Amane Inoue @isaka1022 גࣜձࣾϚΠϕετ΁21ଔೖࣾ ৽نࣄۀfavlist/dev_lead WEBΞϓϦέʔγϣϯΤϯδχΞ ʢόοΫΤϯυʣ Ruby on Rails//Next.js/GraphQL

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ֶੜ࣌୅ • ిࢠ৘ใܥΛઐ߈ʢۚ୔ʣ • ઐ໳͸HCIྖҬ • ϋʔυ΢ΣΞΛத৺ͱͨ͠   ώϡʔϚϯΠϯλϑΣʔε Ҫ্पɾळా७Ұ %JTQMBUFΞϯϏΤϯτͳࣄલ৘ใఏࣔʹΑΓ৯ମݧΛ޲্ͤ͞Δ৯ثܕσόΠε ΠaϯλϥΫγϣϯ༧ߘू "*OPVF +"LJUB "TZNNFLBLVTIJ%FWFMPQNFOUBOEFWBMVBUJPOPGBVHNFOUFESFBMJUZTZTUFNUP TVQQPSUGBDFUPGBDFDPNNVOJDBUJPOCZBTZNNFUSJDHB[FJOGPSNBUJPO *4*%#FTU1PTUFS"XBSE

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גࣜձࣾϚΠϕετʹೖࣾ

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͜Ε·Ͱʹ΍͖ͬͯͨ͜ͱ

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ਓؾϥϯΩϯάࣗಈܝग़Pjt https://tsushin.my-best.com/articles/019 ࣾ಺ͷσʔλೖྗɾௐࠪΦϖϨʔγϣϯΛγεςϜஔ͖׵͑

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άϩʔόϧԽPjt https://speakerdeck.com/isaka1022/maibesutogurobaruhua-nosubete ࠃ಺γεςϜΛ8Χࠃల։

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ʢBtoCαʔϏεͷ։ൃΛ΍ͬͯΈͯͷʣ ιϑτ΢ΣΞ։ൃͷ೉͠͞ͱ͸

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ιϑτ΢ΣΞ։ൃͷ೉͠͞ ֦ு εϐʔυ

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ιϑτ΢ΣΞΛ֦ு͢Δ͜ͱͷ೉͠͞ มԽ͢Δ؀ڥʹιϑτ΢ΣΞΛద߹͍ͤͯ͘͞ Ϗδωε χʔζ લఏ ٕज़ ϧʔϧ ֶͼ΍ൃݟ͕͋Δ ւ֎ల։͠Α͏ʂ ϥΠϒϥϦ/ݴޠͷ   Ξοϓσʔτ ๏վਖ਼

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εϐʔυΛҡ࣋ͯ͠։ൃ͢Δ೉͠͞ ૿͍͑ͯ͘΋ͷ͕ଟ͍தͰɺ͍͔ʹ։ൃ଎౓Λམͱ͞ͳ͍͔ ػೳ͕ ૿͑Δ νʔϜͷਓ਺͕ ૿͑Δ

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ʮ࣭ͱεϐʔυʯ https://speakerdeck.com/twada/quality-and-speed-2022-spring-edition ඼࣭Λ٘ਜ਼ʹ͢Ε͹εϐʔυ্͕͕ΔΘ͚Ͱ͸ͳ͍

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։ൃ͕ͲΜͳ΋ͷ͔ ͩΜͩΜͱ෼͔͖ͬͯͨʂ

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ͦͯ͠2೥͕ܦͭࠒʹ ഑ଐมߋ

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৽نࣄۀ “favlist”

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favlistͷ঺հ

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։ൃମ੍ 3ਓͷνʔϜ͔Βελʔτ σβΠφʔ ΤϯδχΞ PdM

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ٕज़ߏ੒ طଘͷmybestͱ͍͏ϓϩμΫτʹʮΞΠςϜϦετʯͱͯ͠   ଘࡏ͍ͯͨ͠΋ͷΛվमͯ͠ϦϦʔεɻ Πϯϑϥ͸ڞ༻ ʢ"84 NZCFTUຊମͱ ಉҰϦϙδτϦ ໊લۭؒ σΟϨΫτϦΛ Ұ෦෼཭ 3BJMT&OHJOF

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഑ଐ͞ΕͯมΘͬͨ͜ͱ

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ෆ࣮֬ੑ͕ΑΓߴ͍ ʢʹࣗ༝౓͕ߴ͍ʣ

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ෆ࣮֬ੑ͕ΑΓߴ͍ ʢʹࣗ༝౓͕ߴ͍ʣ ↓ ԿΛͭ͘Ε͹͍͍͔Θ͔Βͳ͍

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طଘͷνʔϜͱ৽نࣄۀνʔϜͱͷҧ͍ طଘͷϓϩμΫτ͸՝୊͕͋Δఔ౓໌͕֬ͩͬͨɺ   ৽نࣄۀͰ͸՝୊͕Կ͔ʁΛ޿͍෯ͷத͔Βߟ͑Δඞཁ͕͋Δɻ ໌֬ͳ՝୊ ՝୊͕ෆ࣮֬ ʮղܾࡦʯ Λ࣮૷ ݕূͷͨΊͷ ࣮૷ ʮػೳʯͮ͘Γ ʮࣄۀʯͮ͘Γ

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ग़ͯ͠Έͳ͍ͱΘ͔Βͳ͍ ԾઆΛ΋ͱʹϦϦʔεΛ܁Γฦ͠ͳ͕Β   ϓϩμΫτͷՁ஋Λݕূ͍ͯ͘͠ Ծઆ ݕূ ϦϦʔε ܭଌ

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ͦͷதͰɺΤϯδχΞͱͯ͠ ֶΜͩ͜ͱɾେࣄͩͱࢥͬͨ͜ͱ

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ͦͷதͰɺΤϯδχΞͱͯ͠ ֶΜͩ͜ͱɾେࣄͩͱࢥͬͨ͜ͱ ↓ ࢼߦճ਺Λ૿΍͢͜ͱ

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ࢼߦճ਺͕૿͑Ε͹੒ޭ֬཰͸্͕Δ ʮϓϩμΫτ։ൃʯʹ͓͍͍͔ͯʹࢼߦճ਺Λ૿΍ͤΔ͔ ੒ޭ֬཰ ࢼߦճ਺

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ࢼߦճ਺Λ૿΍ͨ͢Ίʹେࣄͳ͜ͱ .71Λ ݟۃΊΔ .71Λ ࠷଎Ͱ ࣮ݱ͢Δ νʔϜͱͯ͠ ΞδϟΠϧͰ͋Δ

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1. MVP͸ͳʹ͔ΛݟۃΊΔ͜ͱ

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MVP = Minimum Valuable Product ↓ ࠷௿ݶͷ࣮༻੡඼

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ʮ୭ʯʹͱͬͯԿ͕ʮՁ஋ʯͳͷ͔ ϦϦʔεʹΑͬͯ΍Γ͍ͨ͜ͱʹΑͬͯ࡞Δ΋ͷ/࡞Γํ͕มΘΔ νʔϜͷͨΊ Ϣʔβʔ ޲͚ Ϣʔβʔͷ՝୊͕   ղܾͰ͖Δ νʔϜʹͱͬͯ   ֶͼ͕͋Δ

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MVPΛݟۃΊΔͨΊʹ Whyͷ෦෼ɺԾઆͮ͘Γͷ෦෼͔Β͔ͬ͠ΓͱΤϯδχΞ͕ೖΔ Ծઆग़͠ ཁٻग़͠ ཁ݅ఆٛ ϦϦʔε ݕূ ࣮૷ ཁٻͷཪʹ͋Δɺ “ਅͷҙਤ”Λཧղ͢Δ

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2. MVPΛ࠷଎Ͱ࣮ݱ͢Δ

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MVPΛ࠷଎Ͱ࣮ݱ͢ΔͨΊʹ ࣮૷͠ͳ͍ ૣ͘ ϦϦʔε͢Δ

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ʮ࣮૷͠ͳ͍ʯ͕࠷୹ ࣮ݱͷͨΊʹɺ࣮૷Ҏ֎Ͱ΋࢖͑Δํ๏͸͋Δ 4BB4Λ࢖͏ طଘͷ ػೳΛ࢖͏ ਓྗͰ΍Δ σʔλΛ ෼ੳ͢Δ mybestͷ   ػೳͰͰ͖ͳ͍͔ʁ ͓ۚͰղܾ͢Δ ཪଆͷ࣮૷ͤͣʹ   ݕূ ͢Ͱʹ͋ΔσʔλͰ   ݕূͰ͖ͳ͍͔ʁ

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ૣ͘ग़͢

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ʢ࠶ܝʣʮ࣭ͱεϐʔυʯ https://speakerdeck.com/twada/quality-and-speed-2022-spring-edition ඼࣭Λ٘ਜ਼ʹ͢Ε͹εϐʔυ্͕͕ΔΘ͚Ͱ͸ͳ͍

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ίʔυͷण໋Λҙࣝ͢Δ ͋͑ͯʮࣺͯΔʯίʔυʹ͢Δ͜ͱͰ εϐʔυΛ༏ઌͰ͖Δ

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ίʔυͷ”ೱ͞”Λҙࣝ͢Δ • ຊ౰ʹՁ஋͕͋Δίʔυ͸Ͳ͔͜ • ֦ு͞Ε͏ΔՕॴ͸Ͳ͔͜ • ͜ͷઌɺมΘΔՄೳੑ͕ߴ͍ͱ͜Ζ͸Ͳ͔͜ ඼࣭ʹάϥσʔγϣϯΛ࡞Γɺ޻਺ͷׂ͖ํΛ޻෉͢Δ

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ٕज़ෛ࠴ͱͷ޲͖߹͍ํ ϦϦʔεˠ࣍ͷ࣮૷·Ͱͷؒͷ࣌ؒΛ׆༻ͯ͠ฦࡁ͢Δ ͜ͷظؒΛ࢖ͬͯϦϑΝΫλϦϯά΍ ෆཁίʔυͷ࡟আͳͲ Ծઆग़͠ ཁٻग़͠ ཁ݅ఆٛ ϦϦʔε ݕূ ࣮૷ ͜ͷظؒΛεέδϡʔϦϯάͯ͠ϦϦʔεͯ͠ݕূΛઌʹߦ͏ͳͲ

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͜ΕΒͷ໨తʹԠٕͨ͡ज़બఆɾઃܭ ͍ΖΜͳબ୒ࢶΛ্࣋ͬͨͰ ࣮૷͢Δඞཁ͕͋Δ

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3. ΞδϟΠϧͰ͋Δ͜ͱ

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ԾઆˠϦϦʔεˠݕূαΠΫϧΛߴ଎Խ͢Δ Ͳ͏ͯ͠΋௚ྻʹͳͬͯ͠·͏ϓϩηεΛγϣʔτΧοτ͍ͨ͠ Ծઆग़͠ ϦϦʔε ݕূ ࣮૷ σβΠϯ ཁ݅ఆٛ

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ԾઆˠϦϦʔεˠݕূαΠΫϧΛߴ଎Խ͢Δ ཁ݅ఆٛɾσβΠϯɾ࣮૷ΛΞδϟΠϧʹ͢Δ Ծઆग़͠ ϦϦʔε ݕূ ࣮૷ σβΠϯ ཁ݅ఆٛ

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ϝϯόʔؒͷίϛϡχέʔγϣϯ 1E.ͱͷ ڠಇ σβΠφʔ ͱͷڠಇ ʮϓϩτλΠϓʯΛ   ࡞Δ GithubͰ   ΍ΓͱΓ͢Δ

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ϓϩτλΠϓΛ׆༻͢Δ ૈ͍ཁٻͰ΋ϓϩτλΠϓΛ͠ɺ৮ΕΔ΋ͷΛ΋ͱʹٞ࿦͢Δ Ծઆग़͠ ϦϦʔε ݕূ ࣮૷ σβΠϯ ཁ݅ఆٛ ग़͔ͯ͠Β ʮҙਤͱҧ͏ʂʯΛ๷͙ ཁ݅ఆٛͷॿ͚ʹͳΔ ೝࣝͷ͢Γ߹Θͤίετ͕Լ͕Δ

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σβΠφʔͱGithubͰ΍ΓͱΓ͢Δ σβΠϯγεςϜΛಋೖ͢Δ͜ͱͰɺσβΠφʔͰ΋ίʔυ্ͰͷσβΠϯमਖ਼ͷࢦఠ͕Մೳʹ ɾࣄલʹܾΊΒΕͨ஋ʢτʔΫϯʣΛ࢖͏   ɾσβΠφʔͰ΋ࡉ͔ͳϚʔδϯͷࢦఠ͕ՄೳʹͳΔ

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νʔϜͱͯ͠ͷಈ͖Λվળ͢Δ KPTʹΑΔৼΓฦΓɾ1on1Ͱಇ͖ํΛվળ͢Δ σβΠφʔ ΤϯδχΞ PdM ૬ޓ1on1ɾKPTͰίϛϡχέʔγϣϯྔͱվળͷ࢓૊ΈΛ୲อ

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ͦͯ͠΋͏͙͢1೥

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1೥ͰͷมԽ ʮߟ͑Δ෯ʯ͕΋ͷ͘͢͝޿͘ͳͬͨ ࣄۀͷ͜ͱ ٕज़ͷ͜ͱ νʔϜͷ͜ͱ

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ιϑτ΢ΣΞ։ൃ ʹ ʮෳࡶੑʯʹ޲͖߹͏͜ͱ ʰA Philosophy of Software Design ʱ

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ʮՁ஋ݕূʯͱ͍͏ෳࡶੑʹ޲͖߹͍ɺ ͲΕ͚ͩγϯϓϧʹͰ͖Δ͔ ↓ ৽نࣄۀΤϯδχΞͷ Ձ஋ɾ໾ׂͳͷͰ͸ͳ͍͔