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 builds software for regulated financial products. It works on digital banking, payments, lending, trading, wealth management, investment platforms, and financial data systems. Its fintech services include custom development, mobile apps, product discovery, AI, DevOps, cloud engineering, and team augmentation.
Past projects include digital wallets, banking apps, KYC and onboarding systems, trading software, and portfolio management tools. Itexus also connects products to financial infrastructure. It serves clients across North America and other international markets and does not have 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 offers software outsourcing and IT staff augmentation, plus a dedicated banking and fintech practice. Its fintech work covers software development, KYC integrations, payments, cloud systems, and mobile apps. It also does data engineering, blockchain, and AI.
The company has a Mexico City presence. For Pomelo, its team built a mobile app connected to a core current account system, supporting Pomelo's Mexican market entry and IFPE licensing. Ancient also builds fintech products for organizations working 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 builds custom digital platforms and applications from an office on Paseo de la Reforma in Mexico City. Its local practice serves fintech companies, financial institutions, and service businesses, as well as retail and ecommerce clients.
Clients can add Newsoft engineering cells to an existing tech team, or use managed platforms if they lack a large in-house IT team. The company lists AlphaCredit among its clients, another link to financial technology. Being in Mexico City, its team can meet in person when a project needs 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 builds technology platforms that combine software with built-in financial features. Its products include ERP software with financial services, electronic wallets, Banking as a Service, and remittance infrastructure. It also offers financial products for organizations that want to add payments or banking to their wider digital operations.
The company lists a Mexico City address in Santa Fe, so businesses in the capital can work with it locally. Because it pairs software with financial infrastructure, PMI fits projects involving wallets, remittances, embedded finance, or business systems linked 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 company that builds custom systems and digital products. Its work includes cloud infrastructure, automation, AI, and payment integrations. On the fintech side, it has built OpenPay integrations, Stripe Connect setups, automated payouts, and OCR checks of SPEI payment receipts.
This hands-on payments experience suits startups and businesses whose platforms handle transactions as part of a larger workflow. DevTech also works with AWS infrastructure. It handles 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 builds custom business software for organizations in Mexico City. Its work includes process automation, CRM platforms, operational apps, and business intelligence dashboards. Fintech and financial services are among the sectors it names directly.
Its work fits financial businesses that need more than a customer mobile app. Projects can cover internal workflows, sales operations, integrations, analytics, and management systems for staff or customers. AssistThink is a practical choice for fintech firms where operational software and automation matter as much as the front end.
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, integrations, automation, mobile apps, and web platforms. Its Mexico City offering includes fintech apps for payments, credit origination, onboarding, and identity verification.
The company also builds API integrations and automates payment reconciliation. These become important once a financial product connects to banks, accounting, and outside service providers. Deepyze works from Buenos Aires, not a Mexico City office, so it fits companies comfortable with a remote Latin American team and overlapping 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 serves Mexico City organizations through managed engineering pods that work remotely with overlapping hours. Its Mexico City practice covers fintech and banking projects with payments, KYC, and API-heavy financial workflows. It also handles automated testing, security, and integration testing.
Its teams work with React, TypeScript, Node.js, Python, Java, and .NET. Appsierra does not present a local Mexico City office. It suits companies that want remote engineers who plug into their existing 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 aimed at the Mexico City market. It builds trading platforms, digital wallets, banking portals, and regulatory reporting systems, and migrates legacy core systems.
The company also handles high-volume transaction processing, financial system integrations, fraud detection, data analytics, and security-first architecture. Mintec fits projects that go beyond a basic app into transaction infrastructure or the modernization of an existing financial platform. Its Mexico City offering is built for local delivery, not a generic global fintech pitch.
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 focuses on digital lending and core banking technology. For Mexico City organizations, it implements, customizes, and supports Mifos and Apache Fineract. Its clients are banks, microfinance institutions, and fintech companies.
Its work covers loan origination, portfolio management, customer servicing, reporting, and modernization of lending operations. This narrow focus helps financial organizations that need a lending or core banking platform, not a general software team. Intelligrow offers these services directly 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 large operations in Mexico and a dedicated financial services practice. It works on core banking modernization, custom financial software, mobile banking, payment infrastructure, and open banking APIs. It also builds BaaS systems and handles data engineering and regulatory compliance engineering.
Its Mexico offices are outside Mexico City, mainly in Guadalajara, Leon, and Aguascalientes. It is listed here for its Mexican nearshore delivery, not a local office in the capital. Its financial services work includes 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.