Tech Co-Founder @CareerOS, ReactJS Barcelona Organizer, Speaker

Neciu Dan is the technical co-founder and tech lead of CareerOS, where he spearheads the development, maintenance, and scaling of the main application. Bringing over 12 years of engineering expertise to the table, Dan has a proven track record in the tech industry, having previously served as a Senior Product Engineer at the New York E-commerce brand, AdoreMe, and as a Senior Software Engineer at the food delivery company, Glovo.

Beyond his technical contributions, Dan is an esteemed international speaker and mentor. He passionately encourages best development practices, with a keen focus on testing, accessibility, and security. His recent speaking engagements include esteemed conferences like React Alicante, React Summit, React Rally, Utah JS, Techorama, and Frontmania.

๐Ÿ’ก Latest Seรฑors @ Scale Podcast Takeaways

Discover actionable insights from conversations with senior engineers about scaling applications, teams, and careers.

WebFragments at Scale โ€“ With Natalia Venditto & Igor Minar
Episode 14
1 hour 2 minutes

Seรฑors @ Scale host Neciu Dan talks with Microsoftโ€™s Natalia Venditto and Cloudflareโ€™s Igor Minar about WebFragments โ€” a new micro-frontend model that isolates JavaScript and DOM at the browser boundary, enables instant SSR through fragment piercing, and lets large teams ship independently without dependency lockstep.

Observability at Scale โ€“ With Erik Grijzen
Episode 13
1 hour

In this episode of Seรฑors @ Scale, host Neciu Dan chats with Erik Grijzen โ€” Principal Software Engineer at New Relic โ€” about building one of the first large-scale micro-frontend architectures, the rise of observability, and what technical leadership looks like across dozens of teams.

Accessibility at Scale โ€“ With Kateryna Porchienova
Episode 12
40 minutes

In this episode of Seรฑors @ Scale, host Neciu Dan chats with Kateryna Porchienova โ€” Senior Engineering Manager at Buffer โ€” about her programming journey, the craft of animation, and why accessibility should be treated as a foundation of good engineering, not an afterthought.

Rails at Scale โ€“ With Adrian Marin
Episode 11
70 minutes

In this episode of Seรฑors @ Scale, host Neciu Dan chats with Adrian Marin โ€” founder of AVO and host of FriendlyRB โ€” about Rails productivity, the magic of Ruby, and how the community continues to evolve through creativity and connection.

Vue at Scale โ€“ With Andreas Panopoulos
Episode 10
62 minutes

In this episode of Seรฑors @ Scale, host Neciu Dan sits down with Andreas Panopoulos โ€” Staff Software Engineer at Hack the Box and co-organizer of Vue.js Athens โ€” to talk about scaling Vue in production, migrating to Nuxt 3, and the human side of engineering.

Frontend Architecture at Scale โ€“ With Faris Aziz
Episode 9
72 minutes

In this episode of Seรฑors @ Scale, host Neciu Dan sits down with Faris Aziz โ€” Staff Front-End Engineer at Small PDF and co-founder of ZurichJS โ€” to talk about scaling frontend systems, the power of BFF architecture, and the human side of engineering culture.

Organizing Conferences at Scale โ€“ With Aris
Episode 8
44 minutes

In this episode of Seรฑors @ Scale, host Neciu Dan sits down with Aris โ€” founder and lead organizer of CityJS โ€” to talk about building developer communities, organizing meetups, and scaling conferences into global events.

Open Source at Scale โ€“ With Erik Rasmussen
Episode 7
62 minutes

In this episode of Seรฑors @ Scale, host Neciu Dan sits down with Erik Rasmussen โ€” creator of Redux Form and React Final Form, and now Principal Product Engineer at Attio โ€” to talk about building open source at scale, developer experience, and the hidden lessons behind shipping tools other developers rely on.

Core Values: Build Fast and Learn, The User Comes First, Be Open / Be Kind / Be Humble / Be Acountable

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