20.10.2026 aktualisiert
100 % verfügbar
Custom web apps, mobile apps and AI products, from architecture to launch and long-term support
Yongin-si, Südkorea
Nur Remote
Über mich
Nextchain builds custom web apps, mobile apps and AI products. Korea-managed, Vietnam-delivered team (offices in South Korea, Vietnam, Canada, USA), client-owned code and post-launch support. Dedicated remote teams for long-term projects.
Skills
OpenAIChatGPTSupabaseFlutterJavaScriptAmazon Web ServicesAndroidMobile Application DevelopmentSaasIos SdkPythonPostgreSQLMongoDBNode.jsScrum
Nextchain is a software development company (founded 2023, team of 10-49) with offices in South Korea (HQ, Yongin), Vietnam (delivery center, Ho Chi Minh City), Canada (Coquitlam, BC) and the USA (Dover, DE). Projects are managed from Korea and delivered by our own team in Vietnam, in English, Korean or Vietnamese.
Services: custom web applications and SaaS platforms (subscriptions, permissions, analytics); CRM, ERP, admin and business systems; customer and partner portals; iOS/Android apps (React Native, Flutter, Swift, Kotlin) incl. backend, admin and store release; AI development (RAG chatbots, LLM integration, AI agents, AI image editing, multi-provider AI gateways); API integrations and web crawling; IT consulting (architecture, modernization, system takeover); UX/UI design.
Tech stack: React, Next.js, TypeScript, JavaScript, Node.js, NestJS, Express.js, Python, React Native, Flutter, Swift, Kotlin, PostgreSQL, Supabase, MongoDB, Redis, Elasticsearch, AWS, GCP, Vercel, OpenAI/LLM APIs, Pinecone (vector DB), Scrum/Kanban.
Industries: SaaS, AI tools, e-commerce, education/EdTech, media, healthcare, games, government/public support programs, market research, sports, accounting/fintech.
Selected work (case studies at nextchain.tech/products): PartnerIT (government support matching platform with crawling, rule-based scoring and AI reports), IMR (enterprise CRM, license and maintenance management with web + mobile customer portal), Itembox (AI product image editor for e-commerce), Bronto (market research survey operations platform), RC Sport (football league platform with QR player verification), NextAPI (own multi-provider AI API gateway), 24hagent.chat (own RAG chatbot SaaS).
Engagement: fixed price or time & materials, projects from $10,000, $25-49/hr. MVPs typically 2-4 months, larger platforms 6-12 months. Dedicated remote teams for long-term engagements. Client-owned source code, direct access to the delivery team, regular demos and post-launch support.
Erfahrung
Berufserfahrung0 - 5 Jahre
Freelancer seit2023
Sprachen
EnglishverhandlungssicherKoreanverhandlungssicher
Projekthistorie
Ongoing engagement building a survey operations platform: client/partner/project modules, automatic survey link generation and redirect flow, Quality Gate pre-screening (custom questions, termination logic, Geo-IP, country restrictions, duplicate detection), real-time respondent tracking via external survey callbacks, dashboards with LOI analytics, role-based access, Excel export.
Scope: requirement analysis, workflow and system architecture, implementation, UAT and production deployment.
Stack: Next.js, NestJS, Supabase.
Reported outcomes: faster project setup, automated partner link management, better respondent quality, real-time fieldwork tracking.
Case study: https://www.nextchain.tech/products/bronto
Built an enterprise CRM that centralizes customers, licenses, maintenance, quotations, support and email, with a customer web + mobile portal.
Features: real-time dashboard, lead-to-client conversion with validation, order tracking to installation, license lifecycle (version, status, maintenance), guided quotation builder (new, renewal, upgrade, version update), email templates with delivery tracking, customer portal.
Scope: requirement analysis, CRM module planning and sitemap, UX/UI for web and mobile app, frontend and product implementation, QA, UAT, deployment support.
Stack: NestJS, React, PostgreSQL.
Reported outcomes: faster access to customer and license information, fewer manual quotation errors, more reliable maintenance follow-up.
Case study: https://www.nextchain.tech/products/imr
Delivered a web platform that collects public-institution announcements (public APIs + crawlers), matches them to company profiles with a rule-based scoring engine and generates AI-assisted analysis reports.
Scope: business requirement analysis, product planning and UX structure, registration/profile workflow, announcement and crawling workflow with de-duplication, rule-based matching logic, AI report workflow, admin dashboard and approvals, recommendation ranking/filtering, QA, UAT and deployment support.
Stack: Next.js, NestJS, web crawling, LLM-generated reports.
Reported outcomes: faster discovery of relevant programs, more accurate company-announcement matching, less manual searching, better control of approvals and recommendations.
Case study: https://www.nextchain.tech/products/partnerit