{"id":4,"name":"J\u0119drzej Siewierski","url":"","description":"","link":"https:\/\/jsoncrew.com\/en\/author\/jedrzej-siewierskijsoncrew-com\/","slug":"jedrzej-siewierskijsoncrew-com","avatar_urls":{"24":"https:\/\/jsoncrew.com\/wp-content\/uploads\/2026\/04\/jedrzej-avatar.png","48":"https:\/\/jsoncrew.com\/wp-content\/uploads\/2026\/04\/jedrzej-avatar.png","96":"https:\/\/jsoncrew.com\/wp-content\/uploads\/2026\/04\/jedrzej-avatar.png"},"meta":{"jc_author_role_pl":"CEO i wsp\u00f3\u0142za\u0142o\u017cyciel JSON Crew","jc_author_bio_pl":"Buduje z zespo\u0142em product configurators, systemy ofertowania, aplikacje i rozwi\u0105zania IoT dla firm produkcyjnych i handlowych. Architekt JSON Hub, naszego CRM i systemu do zarz\u0105dzania firm\u0105 klasy ERP. Pisze o sprzeda\u017cy B2B, automatyzacji i o tym, jak firmy reaguj\u0105 na w\u0142asne liczby.\n\nWywodzi si\u0119 z du\u017cych system\u00f3w: architektura rozwi\u0105za\u0144, chmura i skalowalno\u015b\u0107 to jego codzienno\u015b\u0107 od lat. In\u017cynier mechaniki i budowy maszyn, magister zarz\u0105dzania i in\u017cynierii oprogramowania. Jako CEO nadal projektuje to, co budujemy, a in\u017cynierskie, analityczne i strategiczne my\u015blenie przenosi tak\u017ce na systemy biznesowe i marketingowe: \u0142\u0105czy procesy w firmie realnymi narz\u0119dziami.\n\nPrywatnie, w czasie, kt\u00f3rego prawie nie ma: \u017ceglarz, regularnie na si\u0142owni, by\u0142y freerunner.","jc_author_role_en":"CEO and co-founder of JSON Crew","jc_author_bio_en":"Builds product configurators, quoting systems, apps and IoT solutions for manufacturers and distributors with his team. Architect of JSON Hub, our ERP-class CRM and business management platform. Writes about B2B sales, automation and how companies react to their own numbers.\n\nComes from large-scale systems: solution architecture, cloud and scalability have been his daily work for years. A mechanical engineer by training, with a master\u2019s degree in management and software engineering. As CEO he still designs what we build, and brings the same engineering, analytical and strategic thinking to business and marketing systems, connecting company processes with real tools.\n\nOff the clock, what little there is of it: sailor, regular at the gym, former freerunner.","jc_author_linkedin":"https:\/\/www.linkedin.com\/in\/jedrzej-siewierski"},"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v23.8 (Yoast SEO v28.6) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>J\u0119drzej Siewierski, Autor w serwisie JSON Crew<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/jsoncrew.com\/en\/author\/jedrzej-siewierskijsoncrew-com\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"profile\" \/>\n<meta property=\"og:title\" content=\"J\u0119drzej Siewierski\" \/>\n<meta property=\"og:url\" content=\"https:\/\/jsoncrew.com\/en\/author\/jedrzej-siewierskijsoncrew-com\/\" \/>\n<meta property=\"og:site_name\" content=\"JSON Crew\" \/>\n<meta property=\"og:image\" content=\"https:\/\/jsoncrew.com\/wp-content\/uploads\/2026\/04\/jedrzej-avatar.png\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"ProfilePage\",\"@id\":\"https:\\\/\\\/jsoncrew.com\\\/author\\\/jedrzej-siewierskijsoncrew-com\\\/\",\"url\":\"https:\\\/\\\/jsoncrew.com\\\/author\\\/jedrzej-siewierskijsoncrew-com\\\/\",\"name\":\"J\u0119drzej Siewierski, Autor w serwisie JSON Crew\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/jsoncrew.com\\\/#website\"},\"breadcrumb\":{\"@id\":\"https:\\\/\\\/jsoncrew.com\\\/author\\\/jedrzej-siewierskijsoncrew-com\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/jsoncrew.com\\\/author\\\/jedrzej-siewierskijsoncrew-com\\\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/jsoncrew.com\\\/author\\\/jedrzej-siewierskijsoncrew-com\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Strona g\u0142\u00f3wna\",\"item\":\"https:\\\/\\\/jsoncrew.com\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Archiwum dla J\u0119drzej Siewierski\",\"item\":\"https:\\\/\\\/jsoncrew.com\\\/author\\\/jedrzej-siewierskijsoncrew-com\\\/\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/jsoncrew.com\\\/#website\",\"url\":\"https:\\\/\\\/jsoncrew.com\\\/\",\"name\":\"JSON Crew: automations, configurators, interactive meeting rooms, interactive kiosks\",\"description\":\"automations, configurators, interactive conference rooms, interactive kiosks\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/jsoncrew.com\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\",\"publisher\":{\"@id\":\"https:\\\/\\\/jsoncrew.com\\\/#organization\"}},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/jsoncrew.com\\\/#\\\/schema\\\/person\\\/jedrzej-siewierski\",\"name\":\"J\u0119drzej Siewierski\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/jsoncrew.com\\\/wp-content\\\/uploads\\\/2026\\\/04\\\/jedrzej-avatar.png\",\"url\":\"https:\\\/\\\/jsoncrew.com\\\/wp-content\\\/uploads\\\/2026\\\/04\\\/jedrzej-avatar.png\",\"contentUrl\":\"https:\\\/\\\/jsoncrew.com\\\/wp-content\\\/uploads\\\/2026\\\/04\\\/jedrzej-avatar.png\",\"caption\":\"J\u0119drzej Siewierski\"},\"sameAs\":[\"https:\\\/\\\/www.linkedin.com\\\/in\\\/jedrzej-siewierski\\\/\"],\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/jsoncrew.com\\\/author\\\/jedrzej-siewierskijsoncrew-com\\\/\"},\"jobTitle\":\"CEO\",\"worksFor\":{\"@id\":\"https:\\\/\\\/jsoncrew.com\\\/#organization\"}},{\"@type\":[\"Organization\",\"ProfessionalService\"],\"@id\":\"https:\\\/\\\/jsoncrew.com\\\/#organization\",\"name\":\"JSON Crew\",\"legalName\":\"JSON Crew Sp. z o.o.\",\"url\":\"https:\\\/\\\/jsoncrew.com\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"@id\":\"https:\\\/\\\/jsoncrew.com\\\/#logo\",\"url\":\"https:\\\/\\\/jsoncrew.com\\\/wp-content\\\/themes\\\/blankslate\\\/assets\\\/logo.png\",\"contentUrl\":\"https:\\\/\\\/jsoncrew.com\\\/wp-content\\\/themes\\\/blankslate\\\/assets\\\/logo.png\",\"width\":558,\"height\":83,\"caption\":\"JSON Crew\"},\"image\":{\"@id\":\"https:\\\/\\\/jsoncrew.com\\\/#logo\"},\"description\":\"Software house specjalizuj\u0105cy si\u0119 w automatyzacji sprzeda\u017cy i operacji B2B. Konfiguratory 3D, CPQ, aplikacje webowe i mobilne, integracje ERP\\\/CRM, wdro\u017cenia AI. MVP w 8 tygodni.\",\"foundingDate\":\"2024\",\"email\":\"contact@jsoncrew.com\",\"telephone\":\"+48 886 864 199\",\"address\":{\"@type\":\"PostalAddress\",\"streetAddress\":\"Al. Gen. T. Bora-Komorowskiego 25\\\/U24\",\"addressLocality\":\"Krak\u00f3w\",\"postalCode\":\"31-476\",\"addressCountry\":\"PL\"},\"geo\":{\"@type\":\"GeoCoordinates\",\"latitude\":50.061399999999999,\"longitude\":19.947600000000001},\"openingHoursSpecification\":[{\"@type\":\"OpeningHoursSpecification\",\"dayOfWeek\":[\"Monday\",\"Tuesday\",\"Wednesday\",\"Thursday\",\"Friday\"],\"opens\":\"09:00\",\"closes\":\"17:00\"}],\"contactPoint\":{\"@type\":\"ContactPoint\",\"contactType\":\"sales\",\"email\":\"contact@jsoncrew.com\",\"telephone\":\"+48 886 864 199\",\"availableLanguage\":[\"pl\",\"en\"]},\"areaServed\":[{\"@type\":\"Country\",\"name\":\"Poland\"},{\"@type\":\"Country\",\"name\":\"Germany\"},{\"@type\":\"Country\",\"name\":\"Austria\"},{\"@type\":\"Country\",\"name\":\"Switzerland\"}],\"numberOfEmployees\":{\"@type\":\"QuantitativeValue\",\"minValue\":2,\"maxValue\":9},\"priceRange\":\"30000 PLN - 90000 PLN\",\"founder\":[{\"@id\":\"https:\\\/\\\/jsoncrew.com\\\/#\\\/schema\\\/person\\\/jedrzej-siewierski\"}],\"sameAs\":[\"https:\\\/\\\/www.linkedin.com\\\/company\\\/json-crew\\\/\",\"https:\\\/\\\/www.youtube.com\\\/@jsoncrew\",\"https:\\\/\\\/www.instagram.com\\\/jsoncrew\\\/\",\"https:\\\/\\\/www.tiktok.com\\\/@jsoncrew\",\"https:\\\/\\\/www.facebook.com\\\/people\\\/JSON-Crew\\\/61574481505036\\\/\",\"https:\\\/\\\/open.spotify.com\\\/user\\\/31whfap3jk4cpfabdmaivzd3lkgu\",\"https:\\\/\\\/clutch.co\\\/profile\\\/json-crew\"]}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"J\u0119drzej Siewierski, Autor w serwisie JSON Crew","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/jsoncrew.com\/en\/author\/jedrzej-siewierskijsoncrew-com\/","og_locale":"en_US","og_type":"profile","og_title":"J\u0119drzej Siewierski","og_url":"https:\/\/jsoncrew.com\/en\/author\/jedrzej-siewierskijsoncrew-com\/","og_site_name":"JSON Crew","og_image":[{"url":"https:\/\/jsoncrew.com\/wp-content\/uploads\/2026\/04\/jedrzej-avatar.png","type":"","width":"","height":""}],"twitter_card":"summary_large_image","schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"ProfilePage","@id":"https:\/\/jsoncrew.com\/author\/jedrzej-siewierskijsoncrew-com\/","url":"https:\/\/jsoncrew.com\/author\/jedrzej-siewierskijsoncrew-com\/","name":"J\u0119drzej Siewierski, Autor w serwisie JSON Crew","isPartOf":{"@id":"https:\/\/jsoncrew.com\/#website"},"breadcrumb":{"@id":"https:\/\/jsoncrew.com\/author\/jedrzej-siewierskijsoncrew-com\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/jsoncrew.com\/author\/jedrzej-siewierskijsoncrew-com\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/jsoncrew.com\/author\/jedrzej-siewierskijsoncrew-com\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Strona g\u0142\u00f3wna","item":"https:\/\/jsoncrew.com\/"},{"@type":"ListItem","position":2,"name":"Archiwum dla J\u0119drzej Siewierski","item":"https:\/\/jsoncrew.com\/author\/jedrzej-siewierskijsoncrew-com\/"}]},{"@type":"WebSite","@id":"https:\/\/jsoncrew.com\/#website","url":"https:\/\/jsoncrew.com\/","name":"JSON Crew: automations, configurators, interactive meeting rooms, interactive kiosks","description":"automations, configurators, interactive conference rooms, interactive kiosks","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/jsoncrew.com\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US","publisher":{"@id":"https:\/\/jsoncrew.com\/#organization"}},{"@type":"Person","@id":"https:\/\/jsoncrew.com\/#\/schema\/person\/jedrzej-siewierski","name":"J\u0119drzej Siewierski","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/jsoncrew.com\/wp-content\/uploads\/2026\/04\/jedrzej-avatar.png","url":"https:\/\/jsoncrew.com\/wp-content\/uploads\/2026\/04\/jedrzej-avatar.png","contentUrl":"https:\/\/jsoncrew.com\/wp-content\/uploads\/2026\/04\/jedrzej-avatar.png","caption":"J\u0119drzej Siewierski"},"sameAs":["https:\/\/www.linkedin.com\/in\/jedrzej-siewierski\/"],"mainEntityOfPage":{"@id":"https:\/\/jsoncrew.com\/author\/jedrzej-siewierskijsoncrew-com\/"},"jobTitle":"CEO","worksFor":{"@id":"https:\/\/jsoncrew.com\/#organization"}},{"@type":["Organization","ProfessionalService"],"@id":"https:\/\/jsoncrew.com\/#organization","name":"JSON Crew","legalName":"JSON Crew Sp. z o.o.","url":"https:\/\/jsoncrew.com\/","logo":{"@type":"ImageObject","@id":"https:\/\/jsoncrew.com\/#logo","url":"https:\/\/jsoncrew.com\/wp-content\/themes\/blankslate\/assets\/logo.png","contentUrl":"https:\/\/jsoncrew.com\/wp-content\/themes\/blankslate\/assets\/logo.png","width":558,"height":83,"caption":"JSON Crew"},"image":{"@id":"https:\/\/jsoncrew.com\/#logo"},"description":"Software house specjalizuj\u0105cy si\u0119 w automatyzacji sprzeda\u017cy i operacji B2B. Konfiguratory 3D, CPQ, aplikacje webowe i mobilne, integracje ERP\/CRM, wdro\u017cenia AI. MVP w 8 tygodni.","foundingDate":"2024","email":"contact@jsoncrew.com","telephone":"+48 886 864 199","address":{"@type":"PostalAddress","streetAddress":"Al. Gen. T. Bora-Komorowskiego 25\/U24","addressLocality":"Krak\u00f3w","postalCode":"31-476","addressCountry":"PL"},"geo":{"@type":"GeoCoordinates","latitude":50.061399999999999,"longitude":19.947600000000001},"openingHoursSpecification":[{"@type":"OpeningHoursSpecification","dayOfWeek":["Monday","Tuesday","Wednesday","Thursday","Friday"],"opens":"09:00","closes":"17:00"}],"contactPoint":{"@type":"ContactPoint","contactType":"sales","email":"contact@jsoncrew.com","telephone":"+48 886 864 199","availableLanguage":["pl","en"]},"areaServed":[{"@type":"Country","name":"Poland"},{"@type":"Country","name":"Germany"},{"@type":"Country","name":"Austria"},{"@type":"Country","name":"Switzerland"}],"numberOfEmployees":{"@type":"QuantitativeValue","minValue":2,"maxValue":9},"priceRange":"30000 PLN - 90000 PLN","founder":[{"@id":"https:\/\/jsoncrew.com\/#\/schema\/person\/jedrzej-siewierski"}],"sameAs":["https:\/\/www.linkedin.com\/company\/json-crew\/","https:\/\/www.youtube.com\/@jsoncrew","https:\/\/www.instagram.com\/jsoncrew\/","https:\/\/www.tiktok.com\/@jsoncrew","https:\/\/www.facebook.com\/people\/JSON-Crew\/61574481505036\/","https:\/\/open.spotify.com\/user\/31whfap3jk4cpfabdmaivzd3lkgu","https:\/\/clutch.co\/profile\/json-crew"]}]}},"_links":{"self":[{"href":"https:\/\/jsoncrew.com\/en\/wp-json\/wp\/v2\/users\/4","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/jsoncrew.com\/en\/wp-json\/wp\/v2\/users"}]}}