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エンジニアから起業して経営に役立つのかを考えてみた

 エンジニアから起業して経営に役立つのかを考えてみた

私は東京で約4年間エンジニアとして働いた後にフリーランスエンジニアとして独立し、起業しました。
その経験の中から、エンジニアのスキルは起業するにあたって本当に役立ったのかというのを振り返り、まとめました。

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Takayuki

May 02, 2020
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  1. Copyright Re:Build.inc All Rights Reserved. ࣗݾ঺հ 1 ◆໊લ ླ໦ ޹೭(Suzuki

    Takayuki) ※ಉ੏ಉ໊ଟͯ͘ࠔͬͯ·͢ɻɻɻ ◆ࣗݾ঺հ ɾ1990೥ੜ·Εɻݱࡏɺ29ࡀɻ ɾԭೄͰىۀͯ͠໿2೥൒ɻ ɾPHPΧϯϑΝϨϯεԭೄ࣮ߦҕһ௕ɺ ϑϩϯτΤϯυΧϯϑΝϨϯεԭೄ࣮ߦҕһ௕ ◆झຯ ίεϓϨɺԻָϥΠϒɺϚϥιϯେձʹग़Δɺ໺ٿ؍ઓ BDD(Ϗʔνۦಈ։ൃ)
  2. Copyright Re:Build.inc All Rights Reserved. ձࣾ঺հ 1 ◆ձ໊ࣾ גࣜձࣾRe:Build ◆ॅॴ

    ԭೄݝಹ೼ࢢٱໜ஍2-2-2 λΠϜεϏϧ ◆ࣄۀ಺༰ ɾࣗࣾWEBαʔϏεͷاըɾ։ൃɻ ɾडୗ։ൃ ◆ࣾһ 7໊ ◆ΤϯδχΞͷಇ͖ํ ϦϞʔτϫʔΫՄೳͳࣗ༝ͳಇ͖ํΛਪ঑ͯ͠·͢ʂ
  3. Copyright Re:Build.inc All Rights Reserved. 1 0 ɾαʔϏε໊ Tadoru
 https://tadoru.work/


    
 ɾγεςϜ֓ཁ ΤϯδχΞಛԽܕͷ ϦϑΝϥϧ Ϋϥ΢υιʔγϯά 1 ձࣾ঺հ
  4. Copyright Re:Build.inc All Rights Reserved. 11 ɾαʔϏε໊ Re:Build Boot Camp


    https://rebuild-bootcamp.jp/
 
 ɾ֓ཁ ԭೄͱٶ࡚Ͱʮ࣮຿ϨϕϧʯΛ໨ ࢦ͢ํ޲͚ͷϓϩάϥϛϯάε Ϋʔϧ ɾ࢖͏ٕज़ LaravelɺVue.jsͳͲ 1 ձࣾ঺հ
  5. Copyright Re:Build.inc All Rights Reserved. 1 2 ࣮຿Ϩϕϧ ॳ৺ऀ ॳڃऀ

    ஍ํͷॳ৺ऀ޲͚ͷϓϩάϥ ϛϯάεΫʔϧΛଔۀͨ͠ޙ ͷॳڃऀ͔Β࣮຿Ϩϕϧ·Ͱ ͷؒΛຒΊΔεΫʔϧ 1 ձࣾ঺հ
  6. Copyright Re:Build.inc All Rights Reserved. 1 3 April June July

    May ࣗशܗࣜ ߨٛܗࣜ ൃද தؒൃද ࣗशܗࣜϕʔεͷߨٛܗࣜΛ৫Γֶࠞͥͯश͍͖ͯ͠·͢ɻ ࣗशܗࣜ͸߹ܭ300࣌ؒษڧΛ໨ࢦ͢ɻ 1 ձࣾ঺հ
  7. Copyright Re:Build.inc All Rights Reserved. 2 ࿩ͦ͏ͱࢥͬͨܦҢ ىۀ͢ΔҝʹͱΓ͋͑ ͣɺΤϯδχΞʹͳΓ ͍ͨͰ͢ʂ

    ͜Ε͔Β͸ITۀքͰ͢ ΑͶʂ ىۀ४උͱͯ͠ɺͲΜ ͳΤϯδχΞΛ໨ࢦͤ ͹ྑ͍Ͱ͔͢ʁ ͨ·ʹىۀ͢ΔͨΊʹΤϯδχΞʹͳΓ͍ͨͱ͍͏૬ஊΛड͚Δ
  8. Copyright Re:Build.inc All Rights Reserved. 2 ݁࿦ - डୗ։ൃͷձࣾΛ૑ۀ͢ΔͳΒɺͱͯ΋ΤϯδχΞεΩϧ͕ ໾ཱͬͨɻ


    - ࣗࣾαʔϏε։ൃͷձࣾΛ૑ۀ͢ΔͳΒɺϓϩμΫτͷ಺༰ ʹΑͬͯ͸ɺ΄ͱΜͲΤϯδχΞεΩϧ͸࢖Θͳ͍͔΋͠Εͳ ͍ɻ
  9. Copyright Re:Build.inc All Rights Reserved. 2 ࠓ·Ͱͷܦྺ ~ਓੜάϥϑ~ ᶃ҉ࠇ࣌୅ ᶄస׵ظ

    ᶅԭೄҠॅ ᶆԭೄͰىۀ 21ࡀ 22ࡀ 24ࡀ 26ࡀ 27ࡀ 29ࡀ ৽ଔͰະܦݧͰΤϯδ χΞʹͳ͕ͬͨɺ શવɺ࢓ࣄ͕Ͱ͖ͳ͍ స৬ͯ͠ҰؾʹϞνϕ ্͕Δ ೉͍͠Ҋ݅Λ୲౰͢Δ ϑϦʔϥϯεʹͳͬͯ ԭೄҠॅ ԭೄͰגࣜձࣾ Re:BuildΛ૑ۀ
  10. Copyright Re:Build.inc All Rights Reserved. 2 ৽ଔ࣌୅(23ࡀ) ɾ৽ଔͰະܦݧͰΤϯδχΞʹͳΔɻ ɾSESͰSIerܥͷݱ৔ʹ഑ଐ͞Εͯಇ͕͘ɺશ વɺ࢓ࣄ্͕ख͍͔͘ͳ͍ɻ

    ɾຖ೔ɺౖΒΕΔ೔ʑɻ ɾϓϩάϥϛϯάग़དྷͳ͗ͯ͢͞ɺίϐʔऔΓʹ ͳͬͨޙʹɺ࠷ॳͷݱ৔͸4ϲ݄ͰΫϏʹͳΔɻ ᶃ҉ࠇ࣌୅ ᶄస׵ظ ᶅԭೄҠॅ ᶆԭೄͰىۀ 0࣌ 3࣌ 6࣌ 12࣌ 18࣌ 9࣌ ؼ୐ɾษڧ ࢓ࣄ ब৸ ௨ۈɾษڧ
  11. Copyright Re:Build.inc All Rights Reserved. 2 స৬ઌͰόϦόϦ։ൃ ᶃ҉ࠇ࣌୅ ᶄస׵ظ ᶅԭೄҠॅ

    ᶆԭೄͰىۀ ɾͱʹ͔͘ே͔Β൩·ͰίʔυΛॻ͖·͘Δɻ ɾपΓͷΤϯδχΞͷϨϕϧ͕ߴ͗ͯ͢ɺ࠷ॳ͸ ͍͍ͭͯ͘ͷ͕େมͩͬͨɻ ɾεϐʔυײ͕ͱͯ΋ָ͔ͬͨ͠ʂ ɾனٳΈ͸ͻͨ͢Βɺࣾ֎ͷਓͱϥϯν͢Δ
  12. Copyright Re:Build.inc All Rights Reserved. 2 ϑϦʔϥϯεͱͯ͠ಠཱ(26ࡀ) ᶃ҉ࠇ࣌୅ ᶄస׵ظ ᶅԭೄҠॅ

    ᶆԭೄͰىۀ ɾ3ϲ݄͘Β͍ɺ͍ΖΜͳॴΛసʑͱ͢Δ ɾԭೄʹ஌Γ߹͍0ਓͰҠॅ ɾ౦ژͷձ͔ࣾΒҊ݅Λ੥͚Δ ɾϑϧϦϞʔτ
  13. Copyright Re:Build.inc All Rights Reserved. 2 ԭೄͰىۀ(27ࡀ) ᶃ҉ࠇ࣌୅ ᶄస׵ظ ᶅԭೄҠॅ

    ᶆԭೄͰىۀ ɾԭೄͷΠϕϯτͰ஌Γ߹ͬͨ஥ؒͱىۀ ɾ࠷ॳ͸1೥ؒɺडୗ։ൃΛ΍ͬͯͨ ɾ࣍ͷ1೥ؒ͸ࣗࣾαʔϏε։ൃʹ஫ྗ ɾࢿۚௐୡɾΤϯδχΞҎ֎ͷ࢓ࣄ΋શͯ ΍Δ
  14. Copyright Re:Build.inc All Rights Reserved. ܦྺ·ͱΊ 4&4 4*FS  8FCܥࣗࣾ։ൃ

    ϑϦʔϥϯεΤϯδχΞ ىۀ डୗ։ൃ ελʔτΞοϓ ϓϩάϥϛϯάεΫʔϧܦӦ ͳͲɻ෯޿͘ۀ຿Λ͖ͯ͠·ͨ͠ɻ
  15. Copyright Re:Build.inc All Rights Reserved. 3 ٕज़Ӧۀ ଧͪ߹Θͤ ࠾༻໘઀ ਓࣄධՁ੍౓࡞੒

    ࣄۀܭըॻ࡞੒ ϓϨθϯೳྗ ޿ใ ܖ໿ؔ࿈ ܦཧɾ࿑຿ ܖ໿ॻ࡞੒ ϝʔϧɾSlackͷ࿈བྷͳͲ ώΞϦϯάɾݟੵ΋Γ࡞੒ Ϧιʔεௐ੔ ཁ݅ఆٛ εέδϡʔϧ࡞੒ ը໘ભҠਤ࡞੒ API࢓༷ॻ࡞੒ ERਤ࡞੒ Πϯϑϥߏ੒ਤ࡞੒ ίʔυϨϏϡʔ ςετ࢓༷ॻ࡞੒ อकӡ༻ ϓϩάϥϛϯά(։ൃ) 0 2.5 5 7.5 10 डୗ։ൃΛ1೥ؒ΍ͬͯͨ࣌ͷ࡞ۀׂ߹(গ͠ײ֮஋)
  16. Copyright Re:Build.inc All Rights Reserved. 3 डୗ։ൃΛ1೥ؒ΍ͬͯͨ࣌ͷ࡞ۀׂ߹(গ͠ײ֮஋) ٕज़Ӧۀ ଧͪ߹Θͤ ࠾༻໘઀

    ਓࣄධՁ੍౓࡞੒ ࣄۀܭըॻ࡞੒ ϓϨθϯೳྗ ޿ใ ܖ໿ؔ࿈ ܦཧɾ࿑຿ ܖ໿ॻ࡞੒ ϝʔϧɾSlackͷ࿈བྷͳͲ ώΞϦϯάɾݟੵ΋Γ࡞੒ Ϧιʔεௐ੔ ཁ݅ఆٛ εέδϡʔϧ࡞੒ ը໘ભҠਤ࡞੒ API࢓༷ॻ࡞੒ ERਤ࡞੒ Πϯϑϥߏ੒ਤ࡞੒ ίʔυϨϏϡʔ ςετ࢓༷ॻ࡞੒ อकӡ༻ ϓϩάϥϛϯά(։ൃ) 0 2.5 5 7.5 10 ൒෼Ҏ্͸Τϯδχ ΞܥͷλεΫΛ΍ͬ ͯͨ ϏδωεαΠυ ΤϯδχΞαΠυ
  17. Copyright Re:Build.inc All Rights Reserved. 3 ࣗࣾ։ൃΛ1೥ؒ΍ͬͯͨ࣌ͷ࡞ۀׂ߹(গ͠ײ֮஋) ࠾༻໘઀ ਓࣄධՁ੍౓࡞੒ ࣄۀܭըॻ࡞੒

    ϐονࢿྉ࡞੒ ϢʔβετʔϦʔϚοϐϯά࡞੒ ΧελϚʔδϟʔχʔϚοϓ࡞੒ ϢʔβΠϯλϏϡʔ Ծઆݕূ ஌ࡒͷௐࠪ ͦͷۀքͷษڧ ϓϨθϯ ࢿۚௐୡ ޿ใ ϚʔέςΟϯά ܦཧɾ࿑຿ Ӧۀ ϝʔϧɾSlackͷ࿈བྷͳͲ σΟϨΫγϣϯ ։ൃͷଧͪ߹Θͤ εέδϡʔϧ࡞੒ ։ൃνʔϜͷϚωδϝϯτ ٕज़બఆ ϓϩάϥϛϯά(։ൃ) 0 2.5 5 7.5 10
  18. Copyright Re:Build.inc All Rights Reserved. 3 ࣗࣾ։ൃΛ1೥ؒ΍ͬͯͨ࣌ͷ࡞ۀׂ߹(গ͠ײ֮஋) ࠾༻໘઀ ਓࣄධՁ੍౓࡞੒ ࣄۀܭըॻ࡞੒

    ϐονࢿྉ࡞੒ ϢʔβετʔϦʔϚοϐϯά࡞੒ ΧελϚʔδϟʔχʔϚοϓ࡞੒ ϢʔβΠϯλϏϡʔ Ծઆݕূ ஌ࡒͷௐࠪ ͦͷۀքͷษڧ ϓϨθϯ ࢿۚௐୡ ޿ใ ϚʔέςΟϯά ܦཧɾ࿑຿ Ӧۀ ϝʔϧɾSlackͷ࿈བྷͳͲ σΟϨΫγϣϯ ։ൃͷଧͪ߹Θͤ εέδϡʔϧ࡞੒ ։ൃνʔϜͷϚωδϝϯτ ٕज़બఆ ϓϩάϥϛϯά(։ൃ) 0 2.5 5 7.5 10 ΄ͱΜͲɺΤϯδχΞܥλεΫ͸΍ͬͯͳ ͔ͬͨɻ ϏδωεαΠυͷλεΫ͕΄ͱΜͲɻ ϏδωεαΠυ ΤϯδχΞαΠυ
  19. Copyright Re:Build.inc All Rights Reserved. 4 ඞཁͳεΩϧҰཡ(ͬ͘͟Γ) Ϛωδϝϯτ ϚʔέςΟϯά ϓϨθϯ

    ࢀೖ͢Δۀքͷ஌ࣝ αʔόαΠυ ޿ใ اը ϑϩϯτΤϯυ ϑΝΠφϯε Ӧۀ ࠾༻ Πϯϑϥ ཁ݅ఆٛ DBઃܭ ηΩϡϦςΟ ݟੵ΋Γ Ϗδωεӳޠ UI/UX ϏδωεαΠυ ΤϯδχΞαΠυ
  20. Copyright Re:Build.inc All Rights Reserved. 4 डୗ։ൃͷձࣾΛ্ཱͪ͛Δʹ͋ͨͬͯඞཁͳϝϯόʔ https://note.com/cxobank/n/na5a91a5e8259 CEO COO

    CTO CFO CMO 10ਓن໛·ͰͳΒɺ 1ਓͰ3໾݉຿΋͍͚ͳ͘͸ͳͦ͞͏ͳײ֮ɻ ࣄۀن໛ʹΑͬͯ͸ɺCFOɺCMO΋͍Βͳ ͍͔΋͠Εͳ͍ɻ
  21. Copyright Re:Build.inc All Rights Reserved. 4 ॳظϝϯόʔͷྑ͍ྫ https://note.com/cxobank/n/na5a91a5e8259 ࠷খߏ੒ CEO

    COO CTO CFO CMO ॳظஈ֊Ͱ΋CTOɺCOO͸͍ͨํ͕ Φεεϝʂࢿۚௐୡ͢Δ࣌΋໾һߏ ੒͸ݟΒΕΔɻ CFOۀ຿͸୅ද͕݉຿Ͱྑͦ͞͏ɻ
  22. Copyright Re:Build.inc All Rights Reserved. 4 https://note.com/cxobank/n/na5a91a5e8259 CEO COO CTO

    CFO CMO ͜Ε͘Β͍͸·ͩΞϦɻ CFO͸ॳظͷܦӦऀ͸ܦݧ ͓͍ͯͨ͠ํ͕ྑ͍ ॳظϝϯόʔͷݶքϥΠϯ
  23. Copyright Re:Build.inc All Rights Reserved. 4 ࣗࣾ։ൃܦӦऀʹٻΊΒΕΔεΩϧ(ओ؍) ϓϨθϯྗ ϏδωεϞσϧ ͷઃܭ

    ۀք஌ࣝ ࢿۚௐୡɾ ϑΝΠφϯε ϚʔέςΟϯά ࠾༻ྗ ஌ࡒʹ͍ͭͯ࠷௿ݶ ͷ஌ࣝ ࠷௿ݶͷγεςϜ։ൃɾ σβΠϯͷཧղ ϚωδϝϯτεΩϧ
  24. Copyright Re:Build.inc All Rights Reserved. 4 ϓϨθϯεΩϧ͸ॏཁ ౤ࢿՈ΍େखاۀͷํ޲͚ʹϐον ͳͲ΋ߦ͖ͬͯ·ͨ͠ɻ ࡢ೥͸1೥ؒͰ100ճҎ্ొஃͨ͠ɻ

    (ϏδωεܥϐονɺΤϯδχΞܥͷ ΧϯϑΝϨϯε΋ؚΉ) ԭೄͰͷϐονίϯςετ ϑϩϯτΤϯυΧϯϑΝϨϯεؔ੢
  25. Copyright Re:Build.inc All Rights Reserved. 4 ࣗࣾ։ൃܦӦऀʹ͸όοΫάϥ΢ϯυ΋ٻΊΒΕΔ ɾܦӦऀͷ͕ࠢϓϩμΫτʹ॓Δͷ ͰɺόοΫάϥ΢ϯυ΍ͦͷਓͷۀ ք஌ࣝͳͲ΋ॏཁࢹ͞Ε͕ͪɻ

    ɾϑΝογϣϯܥͷαʔϏεΛ࡞ͬ ͍ͯΔ ܦӦऀ͸ϑΝογϣϯۀքग़਎ͷਓ ͳͲ ܦӦऀͷ όοΫάϥ΢ϯυ ϑΝογϣϯۀքʹ ͍ͭͯৄ͍͠ɻίω ͕͋ΔͳͲɻ ϓϩμΫτ্ཱͪ͛࣌ͷ؍఺
  26. Copyright Re:Build.inc All Rights Reserved. 4 ࣗ෼ͷ଍Γͳ͔ͬͨεΩϧ ϚʔέςΟϯά Ӧۀ 0→1ͷϓϩμΫτاըεΩϧ

    σβΠϯ ࠾༻ ޿ใ ɾࣗ෼ͷ৔߹ɺϚʔέςΟϯά΍اըͷε Ωϧ͕଍Γͳͯ͘ɺԾઆݕূ͕ग़དྷ͍ͯͳ ͍ஈ֊ͰɺϓϩμΫτ։ൃʹ͓ۚΛ͔͚͢ ͗ͨɻ ɾ޿ใͷ΍Γํ͕Α͘Θ͔͓ͬͯΒͣɺ޿ ࠂඅʹ͓ۚΛ͔͚ΔλΠϛϯά͕ૣ͗͢ ͯɺू٬ͯ͠΋Ϣʔβ͕ఆண͠ͳ͔ͬͨɻ PMFऴΘͬͯ͘Β͍Ͱ΋ྑ͔ͬͨɻ
  27. Copyright Re:Build.inc All Rights Reserved. 4 ϝϯλϧͷҡ͕࣋ॏཁ 0 750 1500

    2250 3000 x݄ x݄ x݄ x݄ x݄ x݄ x݄ ɾݸਓతʹ͸࠷ॳͷํ͸ຖ݄ɺ๏ਓ ޱ࠲͔Β਺ඦສԁಈ͘ͷ͕ڪΖ͠ ͔ͬͨɻ๏ਓޱ࠲͕0ʹͳΓͦ͏ͳ࣌ ΋͋ͬͨɻ׼ ɾঃʑʹେ͕ۚಈ͘ͷʹؾ࣋ͪ΋׳Ε ͖ͯͯԿͱ͔ͳͬͯ͘Δɻ ͱ͍͏͔ײ֮ຑᙺͯ͘͠Δɻস ๏ਓࢿۚͷ্͕ΓԼ͕Γ ୯Ґສԁ
  28. Copyright Re:Build.inc All Rights Reserved. 5 ࣗ෼ͷઑΒͤΔ෼໺ΛܾΊΔ Ϛωδϝϯτ ϚʔέςΟϯά ϓϨθϯ

    ࢀೖ͢Δۀքͷ஌ࣝ αʔόαΠυ اը ϑϩϯτΤϯυ ϑΝΠφϯε Ӧۀ ࠾༻ Πϯϑϥ ཁ݅ఆٛ DBઃܭ ηΩϡϦςΟ ݟੵ΋Γ UI/UX ϏδωεαΠυ ΤϯδχΞαΠυ ޿ใ Ϗδωεӳޠ
  29. Copyright Re:Build.inc All Rights Reserved. Ӧۀྗ اըྗ ਓͱͷܨ͕Γ ϓϨθϯྗ ϚʔέςΟϯάͷ஌ࣝ

    ϓϩτλΠϓΛ࡞ΕΔٕज़ྗ ࠷௿ݶͷܦཧεΩϧ 5 ֤εΩϧΛͲΕ͘Β͍ۃΊΔ͔໌֬ʹ͢Δ גͷ஌ࣝ
  30. Copyright Re:Build.inc All Rights Reserved. 5 ݱࡏͷࣗ෼ͷબ୒ൣғ ϚʔέςΟϯά ϓϨθϯ ࢀೖ͢Δۀքͷ஌ࣝ

    ޿ใ اը ϑΝΠφϯε Ӧۀ ࠾༻ Ϗδωεӳޠ UI/UX ϏδωεαΠυ શͯ໢ཏతʹࣗ෼Ͱ΍Ζ͏ͱ͢Δͱਓੜ͕ ଍Γͳ͍ͷͰɺࣗ෼ͷྖҬΛܾΊΔɻ Ͱ͖Ε͹ɺ΋͏গ͠ݮΒ͍ͨ͠…ɻ Ϛωδϝϯτ αʔόαΠυ ϑϩϯτΤϯυ Πϯϑϥ ཁ݅ఆٛ DBઃܭ ηΩϡϦςΟ ݟੵ΋Γ ΤϯδχΞαΠυ
  31. Copyright Re:Build.inc All Rights Reserved. ϑϦʔϥϯε ҰਓલͷΤϯδχΞʹͳΔ ىۀ CTO ҠॅઌΛ୳͢

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