South Korea has a mature financial technology market with developers working across digital banking, capital markets, payments, lending, AI, and financial infrastructure. This list covers both Korean financial IT specialists and international development companies with demonstrated work in the South Korean market, helping banks, fintech companies, and financial institutions compare different technical capabilities.
1. Itexus
Itexus builds custom fintech software for banking, payments, trading, lending, wealth management, and investment businesses. Its services include product discovery, custom and fintech app development, cloud engineering, and legacy modernization. The team also handles QA, integrations, and ongoing support for complex financial platforms.
For a South Korean fintech business, Itexus built an AI-based financial data management platform for banks and financial institutions. The work covered frontend development, API integration, analytics, reporting, and visualization of large financial datasets. Itexus also builds digital banking platforms, wallets, brokerage systems, automated trading products, and financial analytics tools.
Key Facts
- Best for: Custom fintech products and complex financial platforms
- Core services: Fintech software development, digital banking, payments, trading platforms, lending software, AI, integrations, cloud engineering
- South Korea experience: Development work for a South Korean fintech company serving financial institutions
Contact Information
- Website: itexus.com
- E-mail: moc.suxeti@ofni
- Facebook: www.facebook.com/itexus
- Twitter: x.com/ItexusSoft
- LinkedIn: www.linkedin.com/company/itexus
- Instagram: www.instagram.com/itexus.soft
- Address: Twarda 14, 00-824 Warszawa, Poland
2. Samsung SDS
Samsung SDS runs large digital transformation programs for banks, insurers, card providers, securities firms, and other financial institutions. Its digital finance offering pairs financial platforms with AI, blockchain, cloud, data, automation, and customer-facing digital channels.
Its financial projects include blockchain-based loan platforms, AI-powered compliance processes, insurance automation, and cloud infrastructure for regulated environments. In 2026, Woori Bank selected Samsung SDS for a large AI agent initiative. It covers corporate lending, asset management, internal controls, customer service, and process automation.
Key Facts
- Best for: Large banks and enterprise financial transformation
- Core services: Digital finance platforms, AI, blockchain, cloud, financial infrastructure, automation
Contact Information
- Website: www.samsungsds.com
- E-mail: moc.gnusmas@sds.tcatnoc
- Facebook: www.facebook.com/samsungsds
- Twitter: x.com/samsungsds
- LinkedIn: www.linkedin.com/company/samsung-sds
- Instagram: www.instagram.com/samsung.sds
- Address: 125 Olympic-ro 35-gil, Songpa-gu, Seoul, Republic of Korea
- Phone: +82-2-6155-3114
3. LG CNS
LG CNS builds and modernizes technology for Korean banks and financial institutions. Its finance team works on next-generation banking systems, mobile banking, and MyData platforms. It also builds AI-powered product recommendations, customer-service chatbots, and cloud transformation, and upgrades existing financial infrastructure.
The company also builds international banking systems for Korean financial groups. Its clients have included KB Kookmin Bank, Shinhan Bank, Hana Bank, NH Nonghyup Bank, Woori Bank, the Bank of Korea, and other major institutions.
Key Facts
- Best for: Enterprise banking platforms and financial AX projects
- Core services: Banking systems, mobile banking, MyData, AI, cloud, data platforms, IT consulting
Contact Information
- Website: www.lgcns.com
- E-mail: moc.sncgl@yriuqni
- Facebook: www.facebook.com/lgcnskorea
- LinkedIn: www.linkedin.com/company/lgcns
- Instagram: www.instagram.com/lgcns_kr
- Address: E13/E14, 71 Magokjungang 8-ro, Gangseo-gu, Seoul, Republic of Korea
4. Koscom
Koscom builds and runs technology infrastructure for South Korea's capital markets and investment sector. Its systems serve securities firms, futures businesses, asset managers, exchanges, and other financial organizations. They handle trading, market data, settlement, and investment technology.
Its financial IT services include PowerBase outsourcing, dealing systems, market infrastructure, and financial information services. Koscom also provides disaster recovery, networks, digital certificates, and development for securities businesses. Through its fintech initiatives, it works with AI, big data, blockchain, cloud, and robo-advisory technologies.
Key Facts
- Best for: Capital markets and securities technology
- Core services: Trading systems, financial IT outsourcing, market data, financial infrastructure, fintech R&D
Contact Information
- Website: www.koscom.co.kr
- E-mail: rk.oc.mocsok@ziblabolg
- Address: 21 Yeouinaru-ro 4gil (Yeouido-dong), Yeongdeungpo-gu, Seoul, Korea 07330
- Phone: +82-2-767-8151
5. FPT Software Korea
FPT Software runs a South Korean business with offices in Seoul, Pangyo, and Daegu. It pairs local teams with offshore engineers for software development, cloud, ERP, AI, and digital transformation projects.
Financial services are now a large part of its Korean work. FPT opened its Daegu office to support regional financial clients, including DGB Financial Group and IM Bank. In 2026, it also expanded its work with Shinhan Bank on AI-driven digital finance, fintech innovation, and next-generation banking technology.
Key Facts
- Best for: Financial institutions combining local Korean delivery with offshore development
- Core services: Software development, AI, digital banking technology, cloud, ERP, digital transformation
- Locations: Seoul, Pangyo, Daegu
Contact Information
- Website: fptsoftware.com
- E-mail: moc.tpf@tcatnoc.rkf
- Twitter: x.com/fpt_software
- LinkedIn: www.linkedin.com/company/fpt-software
- Address: 7F, Sewoo Building, 115, Yeouigongwon-ro, Yeongdeungpo-gu, Seoul
- Phone: +82-2-567-6650
6. SK AX
SK AX helps Korean financial companies with digital and AI transformation. Its fintech work covers core banking, information systems, next-generation platforms, and digital channels. It also handles infrastructure, cloud, and AI-based financial services.
The company runs large finance projects from system design and construction through application development and infrastructure rollout. It also offers market intelligence, AI contact centers, operational automation, and tools for customer-facing financial services.
Key Facts
- Best for: Core banking modernization and large financial IT programs
- Core services: Core banking, financial systems development, AI, cloud, digital transformation
- Location: Seongnam, with additional Korean offices including Seoul and Pangyo
Contact Information
- Website: www.skax.co.kr
- E-mail: moc.ks@gnitekramxa
- Facebook: www.facebook.com/skaxofficial
- LinkedIn: www.linkedin.com/company/skax
- Address: (13558) SK u-Tower, Seongnam-daero 343beon-gil 9, Bundang-gu, Seongnam-si, Gyeonggi-do, Republic of Korea
- Phone: +82-2-6400-0114
7. KB Data Systems
KB Data Systems is the financial IT and digital transformation company of KB Financial Group. It has built software for banking, cards, capital, and other financial businesses, both at home and abroad.
The company develops finance-specific software and provides managed cloud services, SaaS, and system maintenance. Its digital services use cloud, big data, and AI. It has delivered next-generation systems for KB Financial affiliates and supports overseas financial IT projects through KB's international network.
Key Facts
- Best for: Financial IT systems and digital transformation within complex banking environments
- Core services: Financial software development, cloud, SaaS, system maintenance, AI, data
Contact Information
- Website: www.kbds.co.kr
- E-mail: moc.gfbk@10eelkj
- Phone: +82-2-3215-6036
8. Korea Financial IT
Korea Financial IT, also known as KOFIT, builds technology for securities firms and capital-market businesses. It offers trading platforms, financial information systems, and analytical software. It also builds automated trading technology and risk-management tools, and provides financial IT consulting.
The company develops web, mobile, and desktop trading components and real-time financial data solutions. Its R&D applies machine learning to robo-advisory, stock selection, algorithmic trading, and investment analysis. KOFIT is a strong match for brokerage and investment technology projects.
Key Facts
- Best for: Brokerage, trading, and capital-market fintech
- Core services: Trading software, financial data, automated trading, analytics, financial IT services
- Location: Yeouido, Seoul, South Korea
Contact Information
- Website: www.kfits.co.kr
- E-mail: rk.oc.stifk@stifk
- Address: 4F, 23, Yeouidaebang-ro 69-gil, Yeongdeungpo-gu, Seoul
- Phone: +82-2-3775-3608
9. Woori FIS
Woori FIS provides financial IT development, system integration, infrastructure, data services, and IT outsourcing for Woori Financial Group companies. Its teams manage financial systems from planning and development through day-to-day operation.
The company also builds technology for overseas banking. Its global ICT work includes banking systems, financial network integrations, mobile banking, and standard systems for Woori Bank branches and subsidiaries outside South Korea. At home, it has built large financial platforms and runs banking information systems over the long term.
Key Facts
- Best for: Banking system integration and long-term financial IT operations
- Core services: Financial SI, IT outsourcing, banking platforms, mobile banking, infrastructure
Contact Information
- Website: woorifis.com
- E-mail: moc.sifiroow@sifiroow
- Address: Woori FIS, 17, World Cup buk-ro 60-gil, Mapo-gu, Seoul
- Phone: +82-2-3151-7000
10. Beyond Digital
Beyond Digital, also known as BD, builds digital financial systems for Korean banks, card companies, insurers, and other financial organizations. Its projects include mobile, internet, and tablet banking, MyData, Open Banking, and financial super apps. It also builds digital lending processes and maintains financial platforms.
Recent work includes the redevelopment of Woori WON Banking, IBK tablet banking, KB Pay system operation, and KB banking platforms. BD builds both customer-facing financial apps and the integration layers behind them.
Key Facts
- Best for: Digital banking channels and customer-facing financial applications
- Core services: Mobile banking, internet banking, MyData, Open Banking, financial SI, system maintenance
Contact Information
- Website: www.beyondigital.co.kr
- E-mail: moc.mgideulb@zib_nif
- Address: Room 305, Building R, Daeryung Post Tower 8, 43, Digital-ro 26-gil, Guro-gu, Seoul
- Phone: +82-2-2025-4999
11. IBK System
IBK System has worked in financial IT since 1991. It develops and maintains systems for banks and non-bank financial institutions. Its experience includes lending systems, card technology, bancassurance, risk management, and capital markets. It also works in insurance, securities, and financial platforms.
The company provides system integration and financial IT outsourcing. Recent work includes financial systems for IBK and other institutions. It has also built systems for investment, capital, retirement pensions, supply-chain finance, and financial reporting.
Key Facts
- Best for: Banking back-office systems and specialized financial workflows
- Core services: Lending systems, risk management, cards, insurance, securities, financial SI
Contact Information
- Website: www.ibksystem.co.kr
- Address: 11th, 12th, 13th floor, Newseoul Bldg. 62-7 Chungmuro 2-GA Jung-gu Seoul
- Phone: +82-2-3407-6600
12. Neoframe
Neoframe builds financial IT platforms for securities companies, exchanges, and trading businesses. Its technology handles market data processing, brokerage middleware, low-latency messaging, and exchange connectivity. It also covers authentication, cloud infrastructure, APIs, and trading information systems.
Its SmartCS product line includes exchange and broker platforms, cloud scaling architecture, market-data infrastructure, monitoring tools, and API management. Neoframe works on high-volume financial data and transaction infrastructure. It fits trading and brokerage technology better than general-purpose app development.
Key Facts
- Best for: Securities platforms, exchanges, and trading infrastructure
- Core services: Brokerage middleware, market data, trading systems, cloud platforms, OpenAPI
- Location: Yeongdeungpo-gu, Seoul, South Korea
Contact Information
- Website: neoframe.com
- E-mail: moc.emarfoen@selas
- Address: 8F, Center Building, 6 Yeouidaebang-ro 65-gil, Yeongdeungpo-gu, Seoul
- Phone: +82-2-579-0679
13. eNext-I
eNext-I builds financial IT systems, mainly for lending and risk management. Its work covers credit assessment, loan screening, collateral management, and interest-rate processes. It also builds early-warning systems and IFRS-related applications, and maintains financial systems.
Its clients include major Korean banks such as Shinhan Bank, NH Nonghyup Bank, KB Kookmin Bank, IBK, and Hana Bank. The team builds next-generation systems on Spring Boot, financial workflow applications, and customer portals. It also writes custom Java frameworks for finance-specific interfaces.
Key Facts
- Best for: Lending, credit assessment, and financial risk systems
- Core services: Financial SI, loan systems, credit assessment, risk management, system maintenance
Contact Information
- Website: www.enext.co.kr
- E-mail: rk.oc.txene@5002txene
- Address: Room 407, Building 3, Ace Hitech City, 775 Gyeongin-ro, Yeongdeungpo-gu, Seoul
- Phone: +82-2-2038-8608
14. KlausDX
KlausDX builds custom financial SI systems with AI, data analytics, cloud architecture, and enterprise software. Its finance team works on risk detection, fraud prevention, operational automation, and internal control. It also builds compliance monitoring and algorithm-based decision-support tools.
The company also builds digital asset infrastructure. Its platforms handle the issuance and trading of security tokens and NFTs, with an open architecture and cloud deployment options for financial institutions and service providers. KlausDX suits financial organizations that want to modernize existing systems and also explore digital assets.
Key Facts
- Best for: AI-based financial SI and digital asset infrastructure
- Core services: Financial system development, AI, risk and fraud systems, automation, digital asset platforms
Contact Information
- Website: klausdx.co.kr
- Address: 5th Floor, Suite 516, Indukwon LDC Biz Tower, 47, Heungan-daero 427beon-gil, Dongan-gu, Anyang-si, Gyeonggi-do, South Korea
15. Inance
Inance builds software infrastructure for securities trading and capital-market applications. Its systems serve financial businesses that need fast market data processing, automated order execution, institutional trading, and real-time financial information.
Its products include the XtM real-time data processing platform and K-PATS, an algorithmic server auto-order tool. It also offers the Winning System for institutional trading of financial products, liquidity-provision systems, and investment optimization technology. Its clients include Korean securities firms and other financial market organizations.
Key Facts
- Best for: Algorithmic trading and securities software
- Core services: Trading platforms, automated ordering, market-data processing, institutional trading systems
- Location: Yeouido, Seoul, South Korea
Contact Information
- Website: www.inance.co.kr
- E-mail: rk.oc.ecnani@ecnani
- Address: 6F, 23, Yeouidaebang-ro 69-gil, Yeongdeungpo-gu, Seoul
- Phone: +82-2-761-4300
16. Shinhan DS
Shinhan DS is a South Korean financial IT company and the technology subsidiary of Shinhan Financial Group. It provides system integration, system management, IT outsourcing, consulting, infrastructure operations, and software development for financial organizations. Its developers build banking business systems, customer channels, financial product platforms, data management, and real-time analytics.
The company is growing its work in AI, cloud, blockchain, big data, Open APIs, and fintech services. Shinhan DS builds and runs ICT systems across Shinhan Financial Group. It has experience with digital financial services, mobile solutions, financial network integrations, and non-face-to-face authentication.
Key Facts
- Best for: Banking IT systems and financial digital transformation
- Core services: Financial system development, system integration, digital banking, cloud, AI, data, Open APIs
- Financial group: Technology subsidiary of Shinhan Financial Group
Contact Information
- Website: www.shinhands.co.kr
- Address: 29 Namdaemun-ro 10-gil, Jung-gu, Seoul 04540, South Korea
- Phone: +82-2-756-0056
17. Hana TI
Hana TI is the financial IT specialist of Hana Financial Group in South Korea. It builds and manages technology for Hana Bank, Hana Securities, Hana Card, Hana Capital, and Hana Life. Hana Insurance, Hana Savings Bank, and other group companies use it too. Its work covers financial IT systems, digital transformation, cloud infrastructure, information security, AI, and its own financial software.
That software is the 1Q ON financial technology suite. It includes a multi-finance core banking solution, APIs, enterprise application integration tools, and AI-powered automation. It also offers authentication, data solutions, and blockchain features for issuing and managing tokens and wallets.
Key Facts
- Best for: Core banking platforms and enterprise financial technology
- Core services: Core banking, financial software development, APIs, AI, cloud, authentication, blockchain
Contact Information
- Website: hanati.co.kr
- LinkedIn: www.linkedin.com/company/hana-ti
- Address: 5F, HFG Data Center, 167, Eco-ro, Seohae-gu, Incheon, 22742
- Phone: 02-2151-6400
18. Hanwha Systems
Hanwha Systems provides enterprise IT and system integration for financial institutions in South Korea. Its fintech practice draws on projects for insurance, securities, investment, and banking organizations. It builds next-generation financial systems, core and information systems, and retirement pension platforms. It also covers bancassurance, asset management, risk management, and security solutions.
The company also builds mobile apps, big data systems, and fintech services. Its financial clients include Hanwha Life, Hanwha General Insurance, and Hanwha Investment & Securities. Its ICT division operates from Seoul.
Key Facts
- Best for: Large-scale financial system integration and modernization
- Core services: Financial SI, next-generation systems, mobile finance, risk management, asset management, big data
Contact Information
- Website: www.hanwhasystems.com
- E-mail: moc.ahwnah@smetsysahwnah
- LinkedIn: www.linkedin.com/company/hanwha-systems
Conclusion
South Korea’s fintech software development market combines large enterprise IT providers with highly specialized teams focused on banking, payments, securities, trading, lending, and financial infrastructure. Companies such as Samsung SDS, LG CNS, Koscom, SK AX, and KB Data Systems are particularly suited to large institutional transformation projects, while more specialized providers can support trading platforms, lending systems, risk management, digital assets, and financial data solutions.
For companies that need a custom fintech product rather than a standardized enterprise platform, Itexus offers end-to-end development across digital banking, payments, lending, trading, wealth management, AI-driven financial tools, integrations, and cloud modernization. Its experience working with fintech businesses, including a project for a South Korean company, makes it a strong option for organizations looking to build or modernize financial software for the Korean market.