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 builds custom software for banks, neobanks, payment providers, credit unions, and other financial organizations. Its banking work includes mobile and online banking, digital onboarding, KYC and AML workflows, and card management. The team also builds lending systems and wallets, connects open banking services, and modernizes core banking.
Itexus can run the whole delivery cycle, from product discovery and UX design to engineering and automated testing. It also sets up cloud infrastructure and supports the product after launch. It fits companies building regulated products with complex integrations, sensitive financial data, or heavy transaction loads.
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: Twarda 14, 00-824 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. It runs transformation programs for banks, insurers, and other financial institutions. Typical work includes cloud adoption, platform modernization, digital channels, data projects, and integration with specialist financial technology products.
Its consulting-led approach helps when a bank must turn operational or regulatory requirements into a technical plan it can execute. Sollers also works with established technology partners. That makes it a practical option for projects that mix 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 products cover digital banking, loan origination, wealth management, and open banking. Others handle loyalty, customer engagement, fraud prevention, and business intelligence.
Comarch both develops products and implements them, so a bank has less software to build from scratch. Choose Comarch if you want configurable platforms that connect to your 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 provides technology and management consulting to financial institutions. Its banking work includes digital bank launches, mobile apps, payments transformation, and platform development. It also runs data programs, system integration, testing, and operating model design.
Capco has worked in retail and commercial banking, credit unions, payments, FinTech, and wealth management. It suits complex programs where software delivery must stay tied 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. It modernizes core banking, migrates systems to the cloud, and builds digital channels and data platforms. Its work also covers regulatory technology, artificial intelligence, and payment infrastructure.
GFT works on large, long-running transformation programs, not small standalone apps. Its published banking projects include credit-risk technology, digital banking platforms, blockchain-based market infrastructure, and modernization for major financial institutions. GFT operates in Warsaw through its Polish company.
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 builds digital products for banks and financial organizations. It works on internet banking, mobile banking, product design, customer experience, and personalization. It also designs and builds dedicated digital banking interfaces.
Efigence is a good pick when the project is about how customers use financial services. Its team combines UX and visual design with the engineering that links new interfaces to banking systems. From its Warsaw base, Efigence has delivered digital banking projects for major institutions in Poland and international markets.
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 builds software for banks, insurers, leasing businesses, and other regulated financial organizations. It offers custom engineering plus ready-made components for designing and automating digital banking journeys.
Its work can cover onboarding, product sales, payments, customer service, operational workflows, and integration with existing systems. Altkom fits organizations that want to modernize selected banking processes without replacing their whole technology environment at once.
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 builds custom web and mobile software from its Warsaw office, and FinTech is one of the industries it serves. Its team handles product planning, business analysis, UX/UI design, engineering, and quality assurance. It also offers AI and machine learning and keeps developing products after release.
Financial businesses should look at Gilzor for customer apps, internal workflow tools, prototypes, and banking-adjacent digital products that need custom engineering. Gilzor also takes over inherited apps. It reviews code, fixes problems, improves performance, and adds features.
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 add data and AI. Its banking work includes client onboarding, KYC and AML automation, lending and risk decisioning, and fraud analytics. It also covers regulatory reporting, cybersecurity, and back-office automation.
SoftServe is better suited to large modernization or data programs than to a narrow marketing app. Its Warsaw office gives Polish and international financial firms local engineers, 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 the financial sector and other regulated industries. Its services include software engineering, data and AI, enterprise portals, workflow automation, cloud development, and integration.
Fabrity helps banks replace manual processes, build employee or customer portals, connect data sources, and extend existing enterprise apps. Its headquarters is in Warsaw, with delivery centers elsewhere in Poland. Clients get local access and a larger engineering pool.
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 provides software development, data services, system integration, and technology consulting to financial and insurance organizations. In finance, it upgrades systems and works on analytics and machine learning. It also builds applications, tests them, and supports existing enterprise environments.
Britenet is a practical choice for banks that need dedicated developers or a team that can work inside an established technology stack. Its Warsaw office handles local coordination. As a project grows, its wider Polish delivery network can add specialists.
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 offers software engineering and consulting to financial services organizations. Its financial work covers corporate banking, financial markets, wealth and asset management, data, and cloud platforms. It also handles regulatory work and technology strategy.
Spyrosoft works on customer-facing systems and on the infrastructure behind them, such as data platforms, operational apps, and legacy modernization. It has a Warsaw office and a wider international engineering organization. Financial institutions that need several technical skills from one vendor will find it a good fit.
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.