It is clear that correct automation enables businesses to eliminate errors, reduce processes time and costs, increase performance, and prevent overstaffing. But beyond the regular automation, there are some unobvious processes driven by people that actually do not require a dedicated staff member. In particular, it is corporate travel management or CTM.
How many people in your company are involved in organizing business trips for employees? How long does it take to book, change, or cancel tickets and hotels and address other travel-related issues? How many working hours do your employees spend on writing business trip reports instead of the work itself?
The solution is a corporate travel management software. Read on to learn how Itexus participated in building an iOS app that can help dozens of companies – from small businesses to enterprises – save money and time where others waste resources and overstaff.
Why California?
California remains the U.S. epicenter for fintech: Bay Area venture networks, LA’s commerce-and-payments ecosystem, and San Diego’s cybersecurity talent fuel rapid product cycles. Buyers here typically prioritize audit-ready delivery, dependable integrations, predictable release cadence, and measurable outcomes across onboarding, payments, and risk.
We vetted California-based or California-market teams that actually ship. Each firm below has a verifiable state presence and a track record in banking, payments, or broader financial services.
Top Fintech Development Companies (2025 Rankings):
1) Itexus
Presence: U.S. delivery teams serving California programs.
Core services: Custom fintech & banking apps, digital wallets, open-finance APIs, payment gateway integration, AI features.
Company overview:
Itexus is a fintech software partner (est. 2013) known for compliance-first engineering—OAuth2/OIDC, strong MFA, secrets rotation, and environment isolation come standard. Case studies span mobile banking, e-wallets and payments; presale materials clearly outline scope and security posture. Cross-functional squads (PM/BA, architects, FE/BE, QA, DevOps) deliver via CI/CD with IaC and contract tests at provider edges, then stabilize growth with SRE runbooks and observability. Teams regularly integrate KYC providers, data aggregators, and payment gateways using idempotent patterns and consent-first flows. For buyers, that translates into faster compliance reviews, fewer failed settlements, and shorter paths from pilot to GA.
2) LeewayHertz
California presence: 388 Market St, Suite 1300, San Francisco
Core services: Fintech software development, AI, blockchain/web3
Company overview:
LeewayHertz designs and builds secure, scalable financial apps, frequently pairing AI components with payments and wallet features. Their SF team is suitable for founders needing rapid prototyping with enterprise-grade security paths. They also run discovery sprints for KYC/AML and transaction-monitoring PoCs to de-risk regulated launches.
3) BairesDev
California presence: Offices at 50 California St; HQ listed at Two Embarcadero Center
Core services: Nearshore product engineering for banking/fintech, cloud & data platforms
Company overview:
BairesDev supplies elastic squads for U.S. fintechs, combining Bay Area product leadership with nearshore velocity. A practical pick for scaling teams that need time-zone alignment plus strong delivery management. Common fintech engagements include replatforming legacy portals and building data pipelines for risk and regulatory reporting.
4) Globant
California presence: 875 Howard St, San Francisco
Core services: Banking & financial-services consulting, AI-powered solutions, digital channels
Company overview:
Globant’s finance studio focuses on AI-enabled transformation across digital onboarding, payments, and servicing. Good fit for institutions seeking modern UX with machine-learning–driven operations. They often pair engineering with design ops and experimentation frameworks to speed adoption and ROI.
5) Thoughtworks
California presence: San Francisco office
Core services: Strategy-to-execution for financial services—core modernization, cloud, and digital payments
Company overview:
Thoughtworks brings opinionated engineering practices (event-driven, cloud-native) and FS playbooks to accelerate modernization without losing control of risk and compliance. Recent industry notes highlight continued focus on payments and core transformation. Expect coaching for teams adopting event streaming, trunk-based development, and continuous delivery under audit constraints.
6) Tavant
California presence: HQ at Freedom Circle, Santa Clara
Core services: AI-powered fintech products and digital engineering across banking, lending, and payments
Company overview:
Tavant ships AI-driven platforms (mortgage/consumer lending, servicing, analytics) and is a solid option for lenders and banks adopting intelligent workflows. They bring accelerators for underwriting and servicing that cut time-to-value for lending programs.
7) Persistent Systems
California presence: 2055 Laurelwood Rd, Santa Clara
Core services: Banking and payments platforms, real-time rails, managed payments operations
Company overview:
Persistent combines product engineering with deep payments operations expertise (advisory through run). A fit for banks upgrading payment stacks while enforcing SLAs and observability across multi-vendor estates. Engagements often include SLO/observability rollout and runbooks to meet audited uptime on real-time rails.
8) Grid Dynamics
California presence: Headquarters in San Ramon
Core services: Digital platforms for FS—cloud, data/AI, search & personalization at scale
Company overview:
Born in the Bay Area, Grid Dynamics is known for high-throughput, data-intensive systems—useful for real-time risk, recommendations, and multi-channel customer journeys in financial services. Their platform blueprints help banks standardize cloud/data patterns across lines of business.
9) Waverley Software
California presence: 855 El Camino Real, Suite 13A, Palo Alto
Core services: Full-stack product engineering for web/mobile; cloud and embedded expertise leveraged in fintech builds
Company overview:
Waverley assembles distributed teams with senior leads in Silicon Valley—handy for startups and mid-market fintechs needing tight PM/engineering loops and rapid iteration. They also provide embedded QA automation and DevOps to keep release cadence predictable.
10) Zensar Technologies
California presence: 2107 N 1st St, San Jose
Core services: Digital engineering, cloud/data, and platform integration for FS
Company overview:
Zensar’s Bay Area unit supports banks/fintechs with modernization and managed services; a good choice for programs emphasizing cost control and steady operational maturity. Expect pragmatic roadmaps that phase in controls and performance upgrades without downtime.
Transition to the Table
With the shortlist established, the table below gives an at-a-glance comparison—California presence and core capabilities—so you can align each vendor to your launch priorities (onboarding, payments, open-finance APIs, compliance evidence, SRE). Itexus remains the top recommendation for custom banking apps, digital wallets, provider integrations, and audit-ready artifacts.
| Company | California Presence | Key Focus / Services |
|---|---|---|
| Itexus | Serves CA programs (U.S. delivery teams) | Custom fintech apps, wallets, open-finance APIs, payments, AI |
| LeewayHertz | San Francisco | Fintech builds, AI, blockchain/web3 |
| BairesDev | San Francisco | Nearshore product engineering for FS, cloud/data |
| Globant | San Francisco | Banking & FS consulting, AI-powered solutions |
| Thoughtworks | San Francisco | Core modernization, cloud, digital payments |
| Tavant | Santa Clara (HQ) | AI-powered fintech products, lending/payments engineering |
| Persistent Systems | Santa Clara | Banking/payments platforms, real-time rails, managed ops |
| Grid Dynamics | San Ramon (HQ) | Cloud/data platforms for FS, high-throughput systems |
| Waverley Software | Palo Alto | Full-stack product engineering, cloud/mobile |
| Zensar Technologies | San Jose | Digital engineering & platform integration for FS |
How California buyers should evaluate
Shortlist vendors who show audit-ready evidence before the SOW: a control map, key-management plan, environment-isolation diagram, data-flow maps, and contract tests at provider edges. Require explicit p95 latency and error-budget targets for onboarding and payments; confirm incident SLAs tied to MTTR, dispute-cycle time, and rollback paths. In California, align early with consumer-protection expectations to avoid rework.
Conclusion
California offers the venture networks, talent density, and regulatory clarity to ship fintech platforms on schedule. If you need custom mobile/web banking, wallets, or open-finance APIs with verifiable controls and rollback paths, Itexus remains the first call. For broader transformations across cloud, data, and core systems, firms like LeewayHertz, BairesDev, Globant, Thoughtworks, Tavant, Persistent Systems, Grid Dynamics, Waverley, and Zensar bring the engineering depth and operating cadence to coordinate complex programs. Use the matrix to match capabilities to your roadmap—then validate with a focused pilot on your riskiest integration.