All Software Development Services in South Korea
HEYHICOMPANY
5(1 review)At HeyHi Company, we design UX/UI that solves real business problems — not just screens that look good. Our process runs from user research and information architecture to wireframing, UI design, and developer handoff, with a separate planning (STEP 1) phase up front to reduce risk before design begins. We specialize in complex, high-stakes interfaces: B2B SaaS platforms, multi-tenant dashboards, and enterprise services. That depth comes from delivering for clients like CJ ENM and Deloitte, and it's why our work earned Korea's 2024 ICT Award Grand Prize (Minister's Award) and a 2025 GDWEB Gold. What you can expect: a research-backed rationale for every decision, clean Figma files ready for development, and a team that embeds with you from day one. With offices in Seoul and Bangkok, we work fluently with both Korean and international clients.Looking for work in Software DevelopmentLocated in Seoul, South Korea (+1)From €1,000 for Software DevelopmentWorks in multiple industriesSpeaks English, Japanese(+1)11-50 membersKunnworks
(0 review)Practical software, AI and blockchain for business operations
Kunnworks is a software development and technology consulting company in Seoul, South Korea. Our 5–9-person team connects product strategy, UX/UI and engineering, from discovery and requirements definition to implementation, validation, deployment and handover. Custom software: web and mobile products, CRM and workflow systems, customer portals, administrative tools, design systems and API integrations. We define user permissions, data ownership, approval states and error handling alongside the interface. Applied AI: document classification, enterprise knowledge assistants, task-specific LLM applications, multilingual text and speech, image processing and generation, and workflow automation. Data access, evaluation cases, human review and fallback paths are scoped for the task. Blockchain: product and platform planning, wallet and chain integrations, signing and transaction flows, state tracking and connections to external systems. The leadership team has experience taking blockchain and IoT platforms from planning through launch. Selected team experience includes the KEPCO energy analytics and AI platform, manufacturing multilingual communication, business-document classification and logistics knowledge assistance. Our wider portfolio also identifies in-house products, prototypes and design studies by their actual contribution and scope. Noah, CEO, leads product strategy and UX. Joseph Nam, CSO, connects technology with business strategy, commercialization and new business development. Technical capabilities include React, TypeScript, Node.js, Python, PyTorch, React Native and Expo. We work company to company, with engagements starting at USD 10,000. Deliverables, dependencies, demonstrations and acceptance criteria guide the project; agreed code, design and operating materials form the handover.1 work in Software DevelopmentLocated in Seoul, South KoreaFrom €10,000 for Software DevelopmentWorked in Industrial Goods & Services (+1)Speaks English, Korean1-10 membersSnailSecret
(0 review)Verifiable by construction
SnailSecret is a Seoul-based studio that builds AI into the core of how a company operates. We take the manual, document-bound, judgment-heavy work that runs a business — reviewing, reconciling, reporting, deciding — and turn it into systems that run with AI. The hard part is not the demo. Most enterprise AI looks impressive in a pilot and then goes unused, because no one trusts its output enough to run real operations on it. We solve that at the root. Everything we build is verifiable by construction: you can trace why any result came out the way it did, so the system earns enough trust to actually be used rather than quietly shelved. We work across the full range of that shift — assessing where AI belongs and what it will return, automating document and reporting workflows, building prediction and scoring models, and standing up assistants over an organization's own rules and records. One standard holds throughout: if a result cannot be traced back to its source, it does not ship. For the figures that carry the most risk, every value is checked against the original before deployment, and a single mismatch fails the build. Our work spans mortgage underwriting, legal, semiconductors, logistics and our own quantitative research platform. We are a small team from psychology, mathematics and computer science, so the person who builds your system is on the first call. And we would rather prove it than pitch it: give us twenty pages of your hardest process, and in two weeks we return a working system built on it — for you to judge, not just read about. Verifiable by construction. https://snailsecret.kr/Looking for work in Software DevelopmentLocated in Gimpo-si, South KoreaFrom €10,000 for Software DevelopmentWorks in multiple industriesSpeaks English, Korean1-10 membersNextchain Tech
(0 review)Custom web, mobile app & AI software development - Korea, Vietnam, Canada, USA.
Nextchain Tech is a software product partner headquartered in Yongin, South Korea, with a delivery center in Ho Chi Minh City (Vietnam) and offices in Coquitlam (Canada) and Dover (USA). We build working products and operational systems for startups and established businesses - not template websites. Our team covers the full lifecycle: discovery, system design and architecture, development in short iterations, testing, launch and long-term operation and maintenance. What we build: - SaaS platforms with subscriptions, roles and permissions, and analytics - Business systems, CRM and admin platforms that replace spreadsheets and manual processes - Customer and partner portals connected to internal workflows - AI-powered applications: AI agents, RAG chatbots trained on company documents, AI image tools and multi-provider AI gateways - iOS and Android apps with React Native, Flutter, Swift and Kotlin, including backend, admin panel and store release - API and system integrations: payments, CRMs, external data sources and crawling - IT consulting: architecture reviews, modernization, takeover of existing systems and AI adoption roadmaps How we work: clients get direct access to the delivery team, a transparent backlog and regular demos, and they own the source code. We run Scrum or Kanban and offer fixed-price or time-and-materials engagements. A typical MVP takes 2-4 months; enterprise platforms take 6-12 months. Tech stack: React, Next.js, TypeScript, Node.js, NestJS, Python, React Native, Flutter, Swift, Kotlin, PostgreSQL, Supabase, AWS, GCP, Vercel and OpenAI/LLM APIs. We work in English, Korean and Vietnamese.6 works in Software DevelopmentLocated in Yongin-si, South KoreaFrom €10,000 for Software DevelopmentWorked in Software & Computer Services (+2)Speaks English, Korean(+1)11-50 membersUnicom Marketing
5(1 review)Together we are: Engaging People, Creating Experiences, Activating Brands
Top awardedUnicom Marketing is an award winning events and marketing solutions agency with a strong presence across the Asia-Pacific region, delivering strategically designed, technology-driven, and sustainability-focused experiences. With over 17 years of industry leadership, we architect end-to-end event strategies, immersive brand activations, and flawlessly executed campaigns, each designed to align with business objectives while delivering unforgettable audience impact. Our expanded suite of services includes digital marketing, influencer engagement, public relations and more, allowing brands to extend their storytelling across both digital and physical dimensions with precision and relevance. Sustainability isn’t a checkbox, it’s embedded in every layer of our operations. From low-waste planning and eco-certified materials to carbon-aware logistics and energy-efficient solutions, we drive innovation without compromise. Headquartered in Malaysia, with regional hubs in Singapore, Vietnam, Indonesia, and the Philippines, we operate strategically across Southeast Asia and beyond. Our campaigns are built to scale; designed to spark conversations, shape culture, and drive long-term brand equity.1 work in Software DevelopmentLocated in Seoul, South Korea (+2)Budget on requestWorked in Aviation & AerospaceSpeaks English, Chinese(+1)51-200 membersSotaTek
5(5 reviews)Empowering business success with State-of-the-Art-Technology
Top awardedSotaTek, a subsidiary of Sota Holdings, is a global IT Services & Consulting company headquartered in Vietnam, with offices in the US, Australia, Singapore, Japan, and Korea . We specialize in delivering end-to-end software development services, including Web, Mobile, and Game Development, as well as Blockchain, AI & Machine Learning, Cloud and ERP/CRM solutions that are scalable, cost-effective, and tailored to each client’s needs. With 10+ years of experience and a team of 1,300+ skilled IT consultants and developers, we combine deep technical expertise with multi-industry knowledge to ensure successful outcomes. Our portfolio covers Banking & Finance, Insurance, Automotive, Media & Entertainment, Retail, Healthcare, Education, and more. To date, we have delivered 500+ projects for clients in 25+ countries, consistently earning trust through quality and innovation. True to our name, State of the Art Technology , we are committed to providing cutting-edge digital solutions that help businesses stay ahead in a fast-changing world.6 works in Software DevelopmentLocated in Cầu Giấy, Vietnam (+5)From €3,000 for Software DevelopmentWorked in Entertainment & Events (+14)Speaks English, Chinese(+3)1001-5000 members