Warsaw has a strong mix of financial technology specialists, established enterprise vendors, and custom engineering teams. This list compares companies with a verified local presence and relevant experience in banking applications, payment systems, core platform modernization, regulatory technology, data engineering, and customer-facing financial products.
1. Itexus
Itexus develops custom software for banks, neobanks, payment providers, credit unions, and other financial organizations. Its banking capabilities cover mobile and online banking, digital onboarding, KYC and AML workflows, card management, lending systems, wallets, open banking integrations, and core banking modernization.
The company can manage the complete delivery cycle, from product discovery and UX design to engineering, automated testing, cloud infrastructure, and post-launch support. Itexus is particularly relevant to businesses building regulated products with complex integrations, sensitive financial data, or demanding transaction workloads.
Key Facts
- Best for: Custom digital banking platforms and regulated financial products
- Core services: Banking software development, FinTech software engineering, AI implementation, QA, DevOps, and maintenance
- Specialization: Digital banking, payments, lending, wallets, KYC, AML, and open banking
- Location: Warsaw, Poland
Contact Information
- Website: itexus.com
- Email: moc.suxeti@ofni
- Address: Żurawia 6/12/lok 766, 00-503 Warszawa, Poland
- LinkedIn: www.linkedin.com/company/itexus
- Facebook: www.facebook.com/itexus
- Twitter: x.com/ItexusSoft
- Instagram: www.instagram.com/itexus.soft
2. Sollers Consulting
Sollers Consulting combines financial-sector consulting with software engineering and system integration. The company works on transformation programs for banks, insurers, and other financial institutions, including cloud adoption, platform modernization, digital channels, data projects, and integration with specialist financial technology products.
Its consulting-led approach is useful when a bank needs help translating operational or regulatory requirements into an executable technical program. Sollers also works with established technology partners, making it a practical option for projects that combine custom development with packaged platforms.
Key Facts
- Best for: Banking transformation programs requiring consulting and engineering
- Core services: Software development, system integration, cloud transformation, data, and business analysis
- Specialization: Banking, financial services, and insurance
- Location: Warsaw, Poland
Contact Information
- Website: sollers.com
- E-mail: moc.srellos@tcatnoc
- Facebook: www.facebook.com/SollersConsulting
- Twitter: x.com/sollers\_
- LinkedIn: www.linkedin.com/company/sollers-consulting
- Instagram: www.instagram.com/sollersconsulting
- Address: Koszykowa 54 (5. Etage), 00-675 Warszawa
- Phone: +48 (22) 272 92 22
3. Comarch
Comarch supplies software platforms and technology services to banks and financial institutions. Its financial product portfolio covers digital banking, loan origination, wealth management, open banking, loyalty, customer engagement, fraud prevention, and business intelligence.
The company brings both product development and implementation capabilities, which can reduce the amount of software a bank needs to build from the ground up. Comarch is a relevant choice for institutions seeking configurable platforms that can be integrated with existing core systems, customer channels, and external financial services.
Key Facts
- Best for: Banks seeking configurable financial platforms
- Core services: Digital banking, lending, wealth management, open banking, and system integration
- Specialization: Retail banking, corporate banking, and financial services
- Location: Warsaw office, Poland
Contact Information
- Website: www.comarch.com
- E-mail: moc.hcramoc@ofni
- Twitter: x.com/ComarchGroup
- LinkedIn: www.linkedin.com/company/comarch
- Instagram: www.instagram.com/comarch\_group
- Address: Eurocentrum Office Complex, Al. Jerozolimskie 134, 02-305 Warszawa, Poland
- Phone: +48 12 646 1000
4. Capco
Capco focuses on technology and management consulting for financial institutions. Its banking work includes digital bank launches, mobile applications, payments transformation, platform development, data programs, system integration, testing, and operational model design.
The company has worked across retail banking, commercial banking, credit unions, payments, FinTech, and wealth management. This breadth makes Capco a sensible candidate for complex programs where software delivery must remain closely connected to regulatory, operational, and customer-experience decisions. Capco has an established team in Warsaw.
Key Facts
- Best for: Large banking transformation and consulting-led delivery
- Core services: Digital banking, payments, data, platform engineering, integration, and testing
- Specialization: Retail banking, commercial banking, payments, and FinTech
- Location: Warsaw, Poland
Contact Information
- Website: www.capco.com
- Facebook: www.facebook.com/CapcoGlobal
- LinkedIn: www.linkedin.com/company/capco
- Instagram: www.instagram.com/lifeatcapco
- Address: Prime Corporate Center Ul. Grzybowska 78 00-844 Warsaw Poland
5. GFT Technologies
GFT has deep roots in banking and financial technology. Its work includes core banking modernization, cloud migration, digital channel development, data platforms, regulatory technology, artificial intelligence, and payment infrastructure.
The company is oriented toward large, long-running transformation programs rather than small standalone applications. Its published banking work includes credit-risk technology, digital banking platforms, blockchain-based market infrastructure, and modernization initiatives for major financial institutions. GFT operates in Warsaw through its Polish organization.
Key Facts
- Best for: Enterprise banking modernization and cloud programs
- Core services: Software engineering, cloud, data, AI, core modernization, and regulatory technology
- Specialization: Banking, capital markets, payments, and insurance
- Location: Warsaw, Poland
Contact Information
- Website: www.gft.com
- E-mail: moc.tfg@dnalop.tcatnoc
- Facebook: www.facebook.com/GFTGroup
- Twitter: x.com/gft\_en
- LinkedIn: www.linkedin.com/company/gft-group
- Instagram: www.instagram.com/gft\_tech
- Address: GFT Poland Sp. z o.o., Towarowa 28, 00-839 Warsaw
- Phone: +48 61 880 09 01
6. Efigence
Efigence concentrates on digital products for banks and financial organizations. Its capabilities cover internet banking, mobile banking, product design, customer experience, personalization, and the implementation of dedicated digital banking interfaces.
The company is especially relevant when the project centers on how customers interact with financial services. Its experience combines UX and visual design with the engineering needed to connect new interfaces to banking systems. Efigence has delivered digital banking projects for major institutions in Poland and other international markets from its Warsaw base.
Key Facts
- Best for: Customer-facing digital banking and financial UX
- Core services: Mobile banking, internet banking, UX/UI design, and front-end development
- Specialization: Digital channels and customer experience for banks
- Location: Warsaw, Poland
Contact Information
- Website: www.efigence.com
- E-mail: moc.ecnegife@tcatnoc
- Facebook: www.facebook.com/efigence
- LinkedIn: www.linkedin.com/company/efigence
- Address: Wołoska 9A 02-583 Warsaw Poland
- Phone: +48 22 380 13 13
7. Altkom Software & Consulting
Altkom Software & Consulting develops software for banks, insurers, leasing businesses, and other regulated financial organizations. The company offers custom engineering alongside ready-made components for designing and automating digital banking journeys.
Its work can cover onboarding, product sales, payments, customer servicing, operational workflows, and integration with existing systems. Altkom is a particularly relevant option for organizations that want to modernize selected banking processes without immediately replacing their entire technology environment.
Key Facts
- Best for: Digital banking journeys and process modernization
- Core services: Custom software, banking platforms, workflow automation, integration, and maintenance
- Specialization: Banking, insurance, and leasing
- Location: Warsaw, Poland
Contact Information
- Website: www.altkomsoftware.com
- E-mail: moc.erawtfosmoktla@olleh
- Facebook: www.facebook.com/altkomsoftware
- LinkedIn: www.linkedin.com/company/altkom-software
- Address: ul. Przyokopowa 33, 01-208 Warszawa
- Phone: +48664092364
8. Gilzor
Gilzor provides custom web and mobile development from its Warsaw office and includes FinTech among the industries it serves. Its team covers product planning, business analysis, UX/UI design, engineering, quality assurance, AI and machine learning, and continued development after release.
For financial businesses, Gilzor is best considered for customer-facing applications, internal workflow tools, prototypes, and banking-adjacent digital products that require custom engineering. The company also supports inherited applications through code review, troubleshooting, performance improvements, and feature development.
Key Facts
- Best for: Custom FinTech applications and banking-adjacent product development
- Core services: Web development, mobile development, UI/UX, QA, AI/ML, and product support
- Specialization: Startups, growing businesses, and product companies
- Location: Warsaw, Poland
Contact Information
- Website: www.gilzor.com
- Email: moc.rozlig@stcatnoc
- LinkedIn: www.linkedin.com/company/gilzor-softwaredevelopment
- Address: Poland, Warsaw, Office 58, street Adama Mickiewicza 37, 01-625
9. SoftServe
SoftServe helps financial institutions modernize core platforms, move regulated workloads to the cloud, and introduce data and AI capabilities. Its banking expertise includes client onboarding, KYC and AML automation, lending and risk decisioning, fraud analytics, regulatory reporting, cybersecurity, and back-office automation.
The company is more appropriate for substantial modernization or data programs than for a narrow marketing application. Its Warsaw presence gives Polish and international financial organizations access to local engineering capacity backed by a larger global delivery network.
Key Facts
- Best for: Cloud, data, and AI modernization in banking
- Core services: Core modernization, cloud engineering, AI, data platforms, and cybersecurity
- Specialization: Banking, payments, insurance, FinTech, and capital markets
- Location: Warsaw, Poland
Contact Information
- Website: www.softserveinc.com
- Facebook: www.facebook.com/SoftServeCompany
- Twitter: x.com/SoftServeInc
- LinkedIn: www.linkedin.com/company/softserve
- Instagram: www.instagram.com/softserve\_people
- Address: Jana Pawła II Avenue 22, 00-133 Warszawa
- Phone: +48-713-822-800
10. Fabrity
Fabrity builds custom software and digital solutions for organizations in the financial sector and other regulated industries. Its services include software engineering, data and AI, enterprise portals, workflow automation, cloud development, and integration.
The company can support banks that need to replace manual processes, develop employee or customer portals, connect data sources, or extend existing enterprise applications. Fabrity is headquartered in Warsaw and also operates delivery locations elsewhere in Poland, giving it a useful balance of local access and broader engineering capacity.
Key Facts
- Best for: Custom banking workflows and enterprise applications
- Core services: Software development, data engineering, AI, cloud, portals, and automation
- Specialization: Financial services and enterprise digital transformation
- Location: Warsaw, Poland
Contact Information
- Website: fabrity.com
- E-mail: lp.ytirbaf@oruib
- Facebook: www.facebook.com/FabritySoftwareHouse
- LinkedIn: www.linkedin.com/company/fabrity
- Instagram: www.instagram.com/fabrity\_people
- Address: 39B Domaniewska Street 02-672 Warsaw
- Phone: +48224487000
11. Britenet
Britenet delivers software development, data services, system integration, and technology consulting for financial and insurance organizations. Its financial-sector work includes system upgrades, analytics, machine learning, application development, testing, and support for existing enterprise environments.
The company is a practical candidate for banks that need dedicated development capacity or a team capable of working within an established technology stack. Its Warsaw operation supports local coordination while the broader Polish delivery network can provide additional specialists as project requirements grow.
Key Facts
- Best for: Banking development teams and system upgrades
- Core services: Custom software, data analytics, AI, testing, integration, and managed services
- Specialization: Banking, finance, insurance, and enterprise systems
- Location: Warsaw, Poland
Contact Information
- Website: britenet.eu
- E-mail: ue.tenetirb@eciffo
- Facebook: www.facebook.com/BriteNet
- LinkedIn: www.linkedin.com/company/britenet
- Instagram: www.instagram.com/britenet\_team
- Address: Aleje Jerozolimskie 44, 00-024 Warsaw
- Phone: +48 22 111 00 30
12. Spyrosoft
Spyrosoft provides software engineering and consulting for financial services organizations. Its expanded financial offering covers corporate banking, financial markets, wealth and asset management, data, cloud platforms, regulatory work, and technology strategy.
The company can contribute to both customer-facing systems and less visible infrastructure, including data platforms, operational applications, and legacy modernization. Spyrosoft maintains a Warsaw office and supports projects through a wider international engineering organization, making it suitable for financial institutions that need access to multiple technical competencies.
Key Facts
- Best for: Corporate banking, financial markets, and wealth technology
- Core services: Software engineering, cloud, data, architecture, consulting, and modernization
- Specialization: Corporate banking, financial markets, and asset management
- Location: Warsaw, Poland
Contact Information
- Website: spyro-soft.com
- Facebook: www.facebook.com/SpyroSoft
- Twitter: x.com/spyrosoft
- LinkedIn: www.linkedin.com/company/spyrosoft
- Address: ul. Prosta 20, 00-850 Warszawa, Poland
- Phone: +48452426043
Conclusion
Warsaw gives banks and FinTech businesses access to an unusually varied group of technology partners. The local market includes specialists in core banking, payments, customer-facing applications, cloud modernization, data engineering, and regulatory workflows. Some companies on this list are equipped for large transformation programs, while others make more sense for focused products, dedicated teams, or improvements to an existing platform.
The best choice depends on what actually needs to be built. Itexus is a strong option for custom banking products that combine financial domain knowledge with full-cycle engineering, while established vendors such as Comarch suit institutions looking for proven banking platforms and long-term operational support. Before committing, compare each provider’s experience with your required integrations, security standards, compliance obligations, delivery model, and post-launch responsibilities.