Seoul's banking software market includes core banking vendors, financial IT specialists, fintech developers, and global technology companies with established Korean operations. The companies below cover areas such as digital banking, core banking, trading platforms, payment systems, financial AI, cloud, and custom software development.
1. Itexus
Itexus develops custom fintech software for banks, brokers, fintech companies, and other financial organizations. Its banking capabilities include digital banking applications, lending systems, payment products, digital wallets, trading platforms, wealth management software, banking process automation, and financial data platforms. The company reports more than three hundred fintech projects for more than two hundred and fifty clients across twenty-three countries and lists South Korea among the countries where it has clients. Its portfolio includes a white-label mobile banking application, a mobile banking app for migrants, digital lending, online payments, and banking-related projects.
Key Facts
- Best for: Custom banking and fintech software projects
- Core services: Banking software development, fintech development, mobile banking, lending, payments, trading, digital wallets
- Specialization: Enterprise financial platforms and regulated fintech products
- Technologies: .NET, Java, Python, TypeScript, React, Angular, Flutter, React Native, AWS, Azure, Google Cloud
- Location: United States headquarters, development offices in Europe, clients in South Korea
- Notable strength: 300+ fintech projects across 23 countries
Contact Information
- Website: itexus.com
- Email: moc.suxeti@ofni
- Address: 8, The Green, STE road, Dover, DE 19901, USA
- LinkedIn: www.linkedin.com/company/itexus
- Facebook: www.facebook.com/itexus
- Twitter: x.com/ItexusSoft
- Instagram: www.instagram.com/itexus.soft
2. Samsung SDS
Samsung SDS provides digital finance platforms and IT services for banks, insurance companies, card companies, and securities firms. Its financial technology portfolio covers AI, blockchain, digital identity, digital payments, cloud, data analytics, and financial process automation. Samsung SDS also offers Nexfinance, an integrated digital financial platform, and Cloud for Finance for regulated financial workloads. In 2026, the company was selected to implement an AI agent banking project for Woori Bank involving more than 175 AI agents across corporate lending, asset management, internal controls, customer service, and process automation.
Key Facts
- Best for: Large-scale banking transformation and financial IT
- Core services: Digital finance, AI, cloud, blockchain, data, financial platforms
- Specialization: Enterprise financial systems and digital transformation
- Industries: Banking, insurance, cards, securities
- Location: Seoul, South Korea
- Notable strength: Financial cloud and digital finance platforms
Contact Information
- Website: www.samsungsds.com
- Address: 125, Olympic-ro 35-gil, Songpa-gu, Seoul, Korea 05510
- Phone: 02-6155-3114
- Email: moc.gnusmas@sds.tcatnoc
- LinkedIn: www.linkedin.com/company/samsung-sds
- Facebook: www.facebook.com/samsungsds
- Instagram: www.instagram.com/samsung.sds
- Twitter: x.com/samsungsds
3. LG CNS
LG CNS has a dedicated financial services practice covering banking, cards, insurance, and securities. Its banking work includes next-generation systems, mobile banking, MyData platforms, AI-based financial product recommendations, LLM-powered customer service, and global banking systems. LG CNS has worked on banking systems for Korean financial institutions including Kakao Bank and Toss Bank and has developed overseas banking systems for Korean banks operating in Southeast Asia and other markets.
Key Facts
- Best for: Banking transformation and large financial IT programs
- Core services: Banking systems, mobile banking, AI, cloud, MyData, system integration
- Specialization: Digital banking and next-generation financial systems
- Industries: Banking, cards, insurance, securities
- Location: Seoul, South Korea
- Notable strength: Experience with both domestic and international banking systems
Contact Information
- Website: www.lgcns.com
- Address: LG Science Park, E13/E14, 71 Magokjungang 8-ro, Gangseo-gu, Seoul, Republic of Korea
- Email: moc.sncgl@yriuqni
- LinkedIn: www.linkedin.com/company/lgcns
- Facebook: www.facebook.com/lgcnskorea
- Instagram: www.instagram.com/lgcns\_kr
4. Bankware Global
Bankware Global focuses specifically on financial software, core banking, financial cloud services, and financial system implementation. Its product portfolio includes core banking, digital banking, savings bank, installment finance, credit card, and financial infrastructure software. The company also provides banking SaaS and cloud-native banking technologies. Bankware Global is headquartered in Seoul and reports more than 100 financial institution and corporate clients.
Key Facts
- Best for: Core banking modernization
- Core services: Core banking software, digital banking, financial cloud, system integration
- Specialization: Banking platforms and financial infrastructure
- Industries: Banking, credit, cards, financial services
- Location: Jung-gu, Seoul
- Notable strength: Core banking and banking SaaS products
Contact Information
- Website: bankwareglobal.com
- Address: 19, Seosomun-ro 11-gil, Jung-gu, Seoul, Republic of Korea
- Phone: +82-2-501-6415
- Email: moc.labolgerawknab@tcatnoc
5. Finger
Finger is a Seoul-based financial technology company working on banking platforms, open banking, remittance and payment systems, MyData, and RegTech. Its banking solutions cover global banking, smart banking, and corporate banking. Finger has also worked on mobile banking projects for Shinhan Bank, Hana Bank, Woori Bank, IBK, and Nonghyup Bank, including app development, stabilization, testing, and new feature development.
Key Facts
- Best for: Digital banking and financial mobile platforms
- Core services: Banking, payments, remittance, MyData, RegTech, cloud
- Specialization: Smart banking and open banking
- Industries: Banking and financial services
- Location: Yeongdeungpo-gu, Seoul
- Notable strength: Banking platform projects for major Korean banks
Contact Information
- Website: finger.co.kr
- Address: 43F FKI Tower, 24, Yeouido-daero, Yeongdeungpo-gu, Seoul, Korea
- Phone: 1544-9350
- Email: rk.oc.regnif@isecnanif
- Facebook: www.facebook.com/fingerfintech
6. Webcash
Webcash develops B2B fintech and financial management software, with a particular focus on corporate banking, cash management, financial data, and banking connectivity. Its products include Inhouse Bank, Branch, and other financial management platforms. Webcash maintains connections with domestic and international financial institutions and has resumed financial system integration work for financial institutions as part of its 2026 strategy.
Key Facts
- Best for: Corporate banking and cash management
- Core services: Treasury management, corporate banking, financial data, fintech SaaS
- Specialization: B2B financial technology
- Industries: Banking, corporate finance, public sector
- Location: Yeongdeungpo-gu, Seoul
- Notable strength: Financial institution connectivity and enterprise finance platforms
Contact Information
- Website: www.webcash.co.kr
- Address: 20F, KnK Digital Tower, 220 Yeongsin-ro, Yeongdeungpo-gu, Seoul, Korea
- Phone: 02-784-1690-1
7. SM SOFT LAB
SM SOFT LAB develops financial IT systems, with a strong focus on securities and trading technology. Its work includes HTS and MTS development, financial mobile applications, trading algorithms, securities APIs, cryptocurrency exchange systems, and financial platforms. The company reports experience with securities firms, banks, exchanges, and fintech companies and has operated since 1987.
Key Facts
- Best for: Trading and securities software
- Core services: HTS, MTS, mobile financial apps, trading systems, financial APIs
- Specialization: Mission-critical financial IT
- Industries: Securities, futures, banking, exchanges, fintech
- Location: Guro-gu, Seoul
- Notable strength: Long-standing financial IT specialization
Contact Information
- Website: smsoftlab.co.kr
- Address: Hanshin IT Tower 701, 272 Digital-ro, Guro-gu, Seoul, Korea
- Phone: 02-2108-6574
- Email: rk.oc.baltfosms@troppus
8. AIZEN
AIZEN focuses on AI-driven financial technology and digital banking. Its products include CreditConnect and ABACUS, with applications in AI-based credit decisioning, embedded finance, and digital banking. AIZEN has expanded its financial technology activities into Southeast Asian markets while maintaining its base in Seoul.
Key Facts
- Best for: AI-powered lending and digital finance
- Core services: AI credit decisioning, digital banking, financial platforms
- Specialization: AI and financial data
- Industries: Banking, lending, embedded finance
- Location: Yeongdeungpo-gu, Seoul
- Notable strength: AI-based financial decisioning technology
Contact Information
- Website: aizenglobal.com
- Address: 8F, 30 Eunhaeng-ro, Yeongdeungpo-gu, Seoul, Korea, 07242
- Phone: +82-70-7008-0020
- Email: oc.nezia@tcatnoc
- LinkedIn: www.linkedin.com/company/aizenglobal
- Facebook: www.facebook.com/aizen.co
9. KB Data Systems
KB Data Systems is the financial IT and digital transformation company affiliated with KB Financial Group. It develops finance-specific solutions and SaaS products and provides IT services, system maintenance, cloud, big data, AI, and financial software development. Its global network includes operations connected to KB Financial Group companies in multiple markets.
Key Facts
- Best for: Financial IT and enterprise banking systems
- Core services: Financial software, SaaS, cloud, AI, IT operations
- Specialization: Finance-focused digital and IT services
- Industries: Banking, securities, cards, financial services
- Location: Seoul, South Korea
- Notable strength: Financial domain expertise combined with KB Financial Group infrastructure
Contact Information
- Website: www.kbds.co.kr
- Phone: 82-2-3215-6036
- Email: moc.gfbk@10eelkj
10. ENEXT-I
ENEXT-I is a Seoul-based financial IT solutions company that develops software for banking and financial institutions. Its work includes credit assessment, loan processing, collateral management, interest-rate decisions, risk management, IFRS systems, early-warning systems, and financial institution monitoring. The company has worked with major Korean financial institutions including Shinhan, Suhyup, NongHyup, KB, IBK, Hana, and Woori. Recent projects include KB Kookmin Bank's core banking modernization and NH NongHyup Bank's next-generation core banking system.
Key Facts
- Best for: Banking systems and financial institution software
- Core services: Core banking, credit assessment, loan systems, risk management, financial IT
- Specialization: Banking and financial institution solutions
- Industries: Banking, financial services
- Location: Yeongdeungpo-gu, Seoul
- Notable strength: Experience with core banking modernization and credit-related systems
Contact Information
- Website: www.enext.co.kr
- Address: 775 Gyeongin-ro, Yeongdeungpo-gu, Seoul, Republic of Korea
- Phone: 02-2038-8608
- Email: rk.oc.txene@5002txene
11. Savvycom
Savvycom is a software development company with a South Korean office in Seoul and experience across BFSI and fintech. Its services include custom software development, AI, digital platforms, and other technology solutions. The company maintains a local Seoul office alongside its headquarters in Vietnam and other international locations.
Key Facts
- Best for: Outsourced fintech and custom software development
- Core services: Software development, AI, digital platforms, fintech
- Specialization: BFSI and technology outsourcing
- Industries: Banking, financial services, fintech, healthcare, manufacturing
- Location: Jongno-gu, Seoul
- Notable strength: Local Korean presence backed by an international delivery operation
Contact Information
- Website: savvycomsoftware.com
- Address: Room 504, Jinhak Hoegwan Building, 38 Jongno3-gil, Jongno-gu, Seoul, Korea
- Phone: +82 7088068886
- LinkedIn: www.linkedin.com/company/savvycomsoftware
- Facebook: www.facebook.com/savvycom
12. FPT Software
FPT Software has operated in South Korea since 2016 and maintains offices in Seoul, Daegu, and Pangyo. Its financial services capabilities include digital transformation, banking, digital payments, core banking, eBanking, lending, and risk management. FPT has worked with Shinhan Bank on digital banking transformation and currently has more than 300 onsite professionals supporting the Korean market.
Key Facts
- Best for: Large-scale digital banking transformation
- Core services: Digital transformation, banking systems, cloud, AI, data, software engineering
- Specialization: Enterprise IT and financial technology
- Industries: Banking, finance, automotive, manufacturing, healthcare
- Location: Seoul and other South Korean offices
- Notable strength: Established Korean delivery organization and banking experience
Contact Information
- Website: fptsoftware.com
- Address: 7F, Sewoo Building, 115, Yeouigongwon-ro, Yeongdeungpo-gu, Seoul
- Email: moc.tpf@tcatnoc.rkf
- Phone: +82 2 567 6650
- LinkedIn: www.linkedin.com/company/fpt-software
- Twitter: x.com/fpt\_software
Conclusion
A good banking software development partner in Seoul should match the project's financial domain, technical scope, and regulatory requirements. The companies on this list cover a range of needs, from core banking modernization and financial IT to digital banking, payments, lending, trading platforms, and AI-driven finance. Comparing their relevant experience, service capabilities, location, and technical fit can help banks and fintech companies narrow the field and select a provider suited to their specific project.