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 builds custom fintech software for banks, brokers, fintech companies, and other financial organizations. It builds digital banking apps, lending systems, payment products, and digital wallets. It also delivers 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, South Korea among them. Past work includes a white-label mobile banking app, a mobile banking app for migrants, digital lending, and online payments.
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 to banks, insurers, card companies, and securities firms. Its work spans AI, blockchain, digital identity, digital payments, cloud, data analytics, and process automation. It offers Nexfinance, an integrated digital financial platform, and Cloud for Finance for regulated workloads. In 2026, Woori Bank chose Samsung SDS for an AI agent banking project. The project uses 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 runs a dedicated financial services practice for banking, cards, insurance, and securities. In banking, it builds next-generation systems, mobile banking, and MyData platforms. It also builds AI-based product recommendations, LLM-powered customer service, and global banking systems. LG CNS has worked on banking systems for Kakao Bank and Toss Bank. It has also built overseas banking systems for Korean banks 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 works only on financial software: core banking, financial cloud services, and system implementation. Its products cover core banking, digital banking, savings banks, installment finance, credit cards, and financial infrastructure. It also offers banking SaaS and cloud-native banking technology. The company 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 fintech company that builds banking platforms, open banking, remittance and payment systems, MyData, and RegTech. Its banking solutions cover global, smart, and corporate banking. Finger has worked on mobile banking for Shinhan Bank, Hana Bank, Woori Bank, IBK, and Nonghyup Bank. That work included app development, stabilization, testing, and new features.
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 makes B2B fintech and financial management software. It focuses on corporate banking, cash management, financial data, and connections to banks. Its products include Inhouse Bank, Branch, and other financial management platforms. Webcash connects with domestic and international financial institutions. Under its 2026 strategy, it has resumed system integration work for financial institutions.
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 builds financial IT systems, mainly for securities and trading. It develops HTS and MTS platforms, financial mobile apps, trading algorithms, and securities APIs. It also builds cryptocurrency exchange systems and other financial platforms. The company has worked 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 builds AI-driven financial technology and digital banking products. Its products, CreditConnect and ABACUS, support AI-based credit decisions, embedded finance, and digital banking. AIZEN is based in Seoul and has expanded into Southeast Asian markets.
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 IT and digital transformation arm of KB Financial Group. It builds finance-specific solutions and SaaS products. It also provides IT services, system maintenance, cloud, big data, AI, and financial software development. Its global network links to KB Financial Group companies in several 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 financial IT company that builds software for banks and other financial institutions. It covers credit assessment, loan processing, collateral management, interest-rate decisions, and risk management. It also builds IFRS systems, early-warning systems, and institution monitoring tools. Its clients include major Korean financial institutions such as 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 in BFSI and fintech. It offers custom software development, AI, digital platforms, and other technology services. The Seoul office works 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 worked in South Korea since 2016, with offices in Seoul, Daegu, and Pangyo. In financial services, it handles digital transformation, banking, digital payments, core banking, eBanking, lending, and risk management. FPT has worked with Shinhan Bank on digital banking transformation. It 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.