Mexico City has a broad mix of local software studios, financial technology specialists, and international engineering teams serving banks and fintech businesses. This list focuses on companies with verifiable fintech development capabilities and a defensible connection to the Mexico City market, whether through local operations or explicit service coverage.
1. Itexus
Itexus develops software for regulated financial products, with capabilities spanning digital banking, payments, lending, trading, wealth management, investment platforms, and financial data systems. Its fintech practice covers custom development, mobile applications, product discovery, AI implementation, DevOps, cloud engineering, and development team augmentation.
The company development work includes digital wallets, banking applications, KYC and onboarding systems, trading software, portfolio management tools, and integrations with financial infrastructure. Itexus serves organizations across North America and other international markets rather than operating a Mexico City office.
Key Facts
- Best for: Complex fintech products and regulated financial platforms
- Core services: Fintech software development, custom fintech software, app development, AI, cloud engineering, DevOps, staff augmentation
- Specialization: Banking, payments, trading, wealth management, lending
- Geographic coverage: North America and international markets
- Notable strength: Extensive fintech-specific project portfolio
Contact Information
- Website: itexus.com
- Email: moc.suxeti@ofni
- Address: 8, The Green, STE road, Dover, DE 19901, United States
- LinkedIn: www.linkedin.com/company/itexus
- Facebook: www.facebook.com/itexus
- Twitter: x.com/ItexusSoft
- Instagram: www.instagram.com/itexus.soft
2. Ancient Technology
Ancient Technology combines software outsourcing and IT staff augmentation with a dedicated banking and fintech practice. Its financial technology work covers software development, KYC integrations, payments, cloud systems, mobile applications, data engineering, blockchain, and AI.
The company maintains a Mexico City presence and has documented work for Pomelo, where its team developed a mobile application integrated with a core current account system for the company's Mexican market entry and IFPE licensing process. Ancient also develops fintech products intended for organizations operating within Mexico's regulated financial environment.
Key Facts
- Best for: Fintech platforms requiring local regulatory awareness
- Core services: Software development, KYC integration, cloud, AI, data engineering, staff augmentation
- Industries: Banking, fintech, insurance
- Location: Mexico City, Mexico
- Notable strength: Experience with Mexican fintech and payment infrastructure
Contact Information
- Website: www.ancient.global
- Phone: +525541724090
- Email: labolg.tneicna@ofni
- LinkedIn: www.linkedin.com/company/ancient-tech
- Instagram: www.instagram.com/ancient\_mx
3. Newsoft
Newsoft develops custom digital platforms and applications from an office on Paseo de la Reforma in Mexico City. Its local software practice specifically addresses fintech companies, financial institutions, and service businesses, alongside clients in retail and ecommerce.
Development can be organized through engineering cells that extend an existing technology team or through managed platforms for organizations without a substantial internal IT function. The company lists AlphaCredit among organizations it has worked with, providing another connection to financial technology. Its Mexico City delivery model also allows in-person collaboration when a project requires it.
Key Facts
- Best for: Mexico City companies wanting a local development partner
- Core services: Custom software, digital platforms, applications, managed development
- Industries: Fintech, financial services, retail, ecommerce
- Location: Paseo de la Reforma, Mexico City
- Notable strength: Local engineering and project collaboration
Contact Information
- Website: www.newsoft.mx
- Address: Av. Paseo de la Reforma No. 250, Colonia Juárez, Ciudad de México, CP 06600
4. PMI
PMI develops technology platforms that combine software with embedded financial functionality. Its portfolio includes ERP software with financial services, electronic wallets, Banking as a Service, remittance infrastructure, and financial products designed for organizations that want to incorporate payment or banking capabilities into broader digital operations.
The company publishes a Mexico City address in Santa Fe, providing a direct local presence for businesses seeking financial technology expertise in the capital. Its combination of software and financial infrastructure is particularly relevant to projects involving wallets, remittances, embedded finance, or business systems connected to financial services.
Key Facts
- Best for: Embedded finance and financial platform projects
- Core solutions: BaaS, e-wallets, remittance platforms, ERP with financial services
- Specialization: Financial technology infrastructure
- Location: Santa Fe, Mexico City
- Notable strength: Combining operational software with financial functionality
Contact Information
- Website: pmi.tech
- Email: hcet.imp@ofni
- Address: C. Guillermo Gonzalez Camarena 1400, Santa Fe, Contadero, Álvaro Obregón, 01376 Ciudad de México.
- LinkedIn: www.linkedin.com/company/pmiamericas
5. DevTech
DevTech is a Mexico City software development company building custom systems and digital products with cloud infrastructure, automation, AI, and payment integrations. Its fintech-related capabilities include OpenPay integrations, Stripe Connect, automated payouts, and the validation of SPEI payment receipts using OCR.
This practical payments experience makes DevTech relevant to startups and businesses developing platforms where transactions form part of a wider software workflow. The company also works with AWS infrastructure and provides development, deployment, security updates, and post-launch support for production systems.
Key Facts
- Best for: Payment-enabled applications and SaaS products
- Core services: Custom software, cloud development, AI integration, payments
- Technologies: AWS, OCR, Stripe Connect, OpenPay
- Location: Mexico City, Mexico
- Notable strength: Experience integrating payment and SPEI-related workflows
Contact Information
- Website: www.devtech.mx
- Phone: +52 55 7464 5691
- Email: moc.liamg@erocsys.hcetved
- LinkedIn: www.linkedin.com/company/devtechmx
6. AssistThink
AssistThink provides custom business software for organizations in Mexico City, covering process automation, CRM platforms, operational applications, and business intelligence dashboards. Fintech and financial services are explicitly included among the sectors addressed by its software offering.
The company's work is suited to financial businesses that need more than a customer-facing mobile application. Projects can involve internal workflows, commercial operations, integrations, analytics, and management systems used by employees or customers. This makes AssistThink a practical candidate for fintech organizations where operational software and automation matter as much as the frontend product.
Key Facts
- Best for: Operational and internal fintech software
- Core services: Custom software, automation, CRM, dashboards
- Industries: Fintech, financial services, retail
- Market: Mexico City
- Notable strength: Business process and operational software development
Contact Information
- Website: assistthink.com
- Phone: 33 1348 0110
- Facebook: www.facebook.com/people/AssistThink/61555904442767
7. Deepyze
Deepyze serves Mexico City businesses remotely with custom software development, integrations, automation, mobile apps, and web platforms. Its dedicated Mexico City offering includes fintech applications for payments, credit origination, onboarding, and identity verification.
The company also works on API integration and payment reconciliation automation, areas that frequently become important as financial products connect with banking, accounting, and external service providers. Deepyze operates from Buenos Aires rather than a Mexico City office, so it fits companies comfortably with a remote Latin American development model and overlapping working hours.
Key Facts
- Best for: Mexico City startups open to remote LATAM development
- Core services: Custom software, mobile apps, web apps, APIs, automation
- Fintech capabilities: Payments, credit origination, onboarding, identity verification
- Delivery model: Remote
- Headquarters: Buenos Aires, Argentina
Contact Information
- Website: deepyze.dev
- Phone: +54 9 11 6449-2692
- Email: ved.ezypeed@ofni
- LinkedIn: www.linkedin.com/company/deepyze
8. Appsierra
Appsierra provides software development to Mexico City organizations through managed engineering pods operating remotely with working-hour overlap. Its Mexico City practice specifically discusses fintech and banking projects involving payments, KYC, API-heavy financial workflows, automated testing, security, and integration testing.
The company's delivery teams work across stacks including React, TypeScript, Node.js, Python, Java, and .NET. Appsierra is not presented as having a local Mexico City office. Instead, it targets companies that want distributed engineering capacity integrated into established development, CI/CD, ticketing, and sprint processes.
Key Facts
- Best for: Fintech teams adding managed engineering capacity
- Core services: Software development, QA, automation, integration
- Technologies: React, TypeScript, Node.js, Python, Java, .NET
- Fintech capabilities: Payments, KYC, financial APIs
- Delivery model: Remote service for Mexico City
Contact Information
- Website: www.appsierra.com
- Email: moc.arreisppa@ofni
- Phone: +91 95992 96964
9. Mintec
Mintec offers fintech software engineering specifically for the Mexico City market. Its financial technology capabilities include trading platforms, digital wallets, banking portals, regulatory reporting systems, and legacy core migration.
The company also addresses high-volume transaction processing, financial system integrations, fraud detection, data analytics, and architecture designed around security requirements. This breadth makes Mintec relevant for projects that extend beyond basic application development into transaction infrastructure or modernization of an existing financial platform. Its Mexico City offering is positioned around local market delivery rather than a generic global fintech page.
Key Facts
- Best for: Transaction-heavy fintech and banking applications
- Core services: Fintech engineering, legacy modernization, financial integrations
- Solutions: Trading systems, wallets, banking portals, regulatory reporting
- Market: Mexico City
- Notable strength: Financial platform architecture and integration work
Contact Information
- Website: mintec.co
- Phone: +504 3173-1847
- Address: Lafayette Business Center, Ste 13 Col. Zeron
- LinkedIn: www.linkedin.com/company/mintecdigital
- Facebook: www.facebook.com/mintecdigital
- Instagram: www.instagram.com/mintecdigital
10. Intelligrow
Intelligrow concentrates on digital lending and core banking technology. For Mexico City organizations, it provides implementation, customization, and support around Mifos and Apache Fineract, targeting banks, microfinance institutions, and fintech companies.
Its work covers loan origination, portfolio management, customer servicing, reporting, and modernization of lending operations. This narrower specialization is useful for financial organizations that need a lending or core banking platform rather than a general-purpose software development team. Intelligrow explicitly offers these financial technology services to institutions in Mexico City.
Key Facts
- Best for: Digital lenders, microfinance companies, and banking platforms
- Core services: Implementation, customization, support
- Technologies: Mifos, Apache Fineract
- Specialization: Digital lending and core banking
- Market: Mexico City
Contact Information
- Website: www.intelligrow.co
- Phone: +91 953 589 1298
- Email: oc.worgilletni@ofni
- Address: Gokul Rd, next to Airport, opp. to Gokul Village, Gokul, Hubballi, Karnataka 580027
- LinkedIn: www.linkedin.com/company/intelligrow-bancsoft
- Facebook: www.facebook.com/people/intelligrowbancsoft/100068214288888
- Instagram: www.instagram.com/intelligrowbancsoft
11. Unosquare
Unosquare is a nearshore digital engineering company with substantial operations in Mexico and a dedicated financial services practice. Its fintech development capabilities cover core banking modernization, custom financial software, mobile banking, payment infrastructure, open banking APIs, BaaS systems, data engineering, and regulatory compliance engineering.
The company's Mexico offices are located outside Mexico City, primarily in Guadalajara, Leon, and Aguascalientes, so its inclusion is based on Mexican nearshore delivery rather than a local capital-city office. Its financial services portfolio includes work involving banking platforms, treasury software, and regulated digital systems.
Key Facts
- Best for: Larger fintech and banking modernization programs
- Core services: Software engineering, fintech development, platform modernization, data and AI
- Financial capabilities: Banking, payments, BaaS, wealth management, fintech APIs
- Delivery presence: Mexico and other Latin American locations
- Notable strength: Engineering for regulated financial systems
Contact Information
- Website: www.unosquare.com
- Phone: +52 (333) 839-1855
- Address: Av. de las Américas 1462, Piso 9 Unosquare, Country Club, 44610 Guadalajara, JAL México
- LinkedIn: www.linkedin.com/company/unosquare
- Facebook: www.facebook.com/unosquare
- Instagram: www.instagram.com/unosquare
Conclusion
Mexico City has become a serious market for fintech development, with options ranging from focused product teams to larger engineering partners capable of handling complex banking and payment infrastructure. The real difference often comes down to depth of financial expertise. Building a customer-facing app is one thing, while dealing with KYC, payment integrations, lending workflows, sensitive data, regulatory requirements, and legacy banking systems is quite another.
For that reason, the right choice depends less on company size and more on how closely the technical experience matches the product being built. Some projects need a team that understands digital banking from end to end, while others are better served by specialists in payments, lending, embedded finance, AI, or financial platform modernization. Looking closely at relevant fintech work, engineering capabilities, security practices, and delivery models can narrow the field considerably and lead to a much stronger long-term technical fit.