Hire Multi-Factor Payment Auth Java Devs

Solve Multi-Factor Payment Authentication Fast Unique Selling Point: domain-focused Java experts solve payment vetting challenges. Average hiring time just 72 hours. • Deploy in 72 hours • Fintech-grade vetting • Month-to-month terms
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Stop burning weeks on recruiting. Outstaffing gives you instant access to senior Java engineers who already understand PCI DSS, 3-D Secure 2.0 and device fingerprinting.

Lower total cost—we cover payroll, benefits, hardware and workspace while you pay a single predictable invoice.

Scale on demand—spin teams up or down as transaction volumes shift.

Stay laser-focused on product while we shoulder talent sourcing, vetting, and compliance paperwork.

Compared with direct hiring, Smartbrain outstaffing slashes time-to-productivity from months to days, eliminates recruiter fees, and protects your IP through airtight NDAs.
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What Technical Leaders Say

Our fintech launch window was collapsing. Smartbrain delivered two senior Java architects versed in 3-D Secure within 48 hours. They integrated with Spring Boot micro-services, added tokenization, and cut fraud by 34%.

Result: sprint velocity up 28%, no onboarding drag.

Ethan Parker

CTO

BlueRiver BankTech

Our Java team lacked expertise in PSD2 SCA flows. Smartbrain’s augmented engineer rebuilt our payment gateway with Hibernate and Kafka, meeting EU deadlines three weeks early. Cart abandonment dropped 15% after go-live.

Sofia Martinez

Head of Engineering

ShopSphere Inc.

Smartbrain supplied a JVM guru who embedded FIDO2 authentication into our billing portal. JUnit coverage jumped from 62% to 90% and release cadence doubled. Our NOC reports 0 fraud incidents since deployment.

Michael Chen

VP Technology

WaveTel Communications

HIPAA plus PCI was daunting. Smartbrain’s Java specialists created a Spring Security layer with OTP and biometric fallback. Integration finished in 10 days, freeing my core team to focus on API interoperability.

Emily Johnson

Product Director

MediSecure Solutions

Our IoT fleet app needed secure payments. Smartbrain’s remote Java dev built device-fingerprinting modules and optimized Netty channels, trimming latency by 42 ms. Drivers authenticate with one tap—support tickets plummeted.

Daniel Wright

Engineering Manager

CargoRoute Systems

Smartbrain added two Spring Boot contractors who automated two-factor SMS and voice verification. Claim submission fraud fell 25% and AWS costs stayed flat thanks to their reactive Java expertise.

Olivia Green

Platform Lead

SureShield Insurance

Industries We Secure

Fintech & Banking

Fintech firms rely on augmented Java teams to embed 3DS2, risk-based authentication, and real-time fraud scoring into payment gateways. Developers build micro-services, integrate with card schemes, and ensure PSD2 SCA compliance while maintaining sub-100 ms latency—critical for customer satisfaction.

eCommerce Platforms

In eCommerce, multi-factor payment authentication developers craft secure checkout flows, add device fingerprinting, and implement adaptive step-up verification using Spring, Hibernate, and Kafka. Their work minimizes cart abandonment and shields merchants from chargebacks.

Telecommunications

Telecom operators need secure top-ups and subscription renewals. Augmented Java engineers weave OTP, FIDO2, and biometric verification into existing OSS/BSS stacks, ensuring low latency and carrier-grade availability.

Healthcare & MedTech

Healthcare platforms must balance HIPAA with PCI DSS. Java experts add multi-factor layers—voice, SMS, and app-based tokens—to patient payment portals while encrypting PHI end-to-end.

Logistics & Mobility

Logistics startups secure driver payments by integrating multi-factor workflows into Java-based mobile back-ends, preventing account takeover and cutting support overhead.

Insurance

For InsurTech, augmented Java teams embed behavioral biometrics and OTP in claim-payment pipelines, blocking synthetic identity fraud and meeting NAIC guidelines.

Travel & Hospitality

Booking engines use Java specialists to apply 3-D Secure and tokenization across multiple PSPs, reducing fraud rates during seasonal traffic spikes while keeping UX frictionless.

Retail POS

Brick-and-mortar retailers upgrading to cloud POS hire Java augmentation to add EMVCo tokenization and secure offline-to-online payment sync, meeting strict PCI DSS level-1 audits.

SaaS Subscriptions

SaaS vendors leverage Java developers for metered billing systems, layering MFA and risk scoring to prevent credential stuffing and improve dunning success rates.

Multi-Factor Payment Authentication Case Studies

Gateway Shield Project

Client Type: Mid-size digital bank. Challenge: Their legacy gateway failed PSD2 multi-factor payment authentication requirements within tight European compliance deadlines. Solution: Smartbrain deployed four augmented Java engineers experienced in 3DS2, Spring Security and Keycloak. They refactored the transaction flow, added risk-based step-up logic, and introduced device fingerprinting APIs—working side-by-side with the bank’s in-house team via GitLab CI. Result: 34% fraud reduction, checkout latency cut by 27 ms, and compliance audit passed on the first attempt.

Retail 3DS2 Acceleration

Client Type: Global fashion eCommerce marketplace. Challenge: Mobile shoppers abandoned carts due to slow multi-factor payment authentication pop-ups. Solution: Two Smartbrain Java specialists optimised the 3DS2 SDK, switched to asynchronous challenge flows, and cached issuer metadata. They collaborated with the React-Native team using RESTful endpoints and implemented JMeter performance suites. Result: Checkout completion rose by 15% and average authentication time dropped from 4.2 s to 1.8 s.

Telecom SecurePay Revamp

Client Type: Tier-1 telecom operator. Challenge: SIM top-up portal suffered credential stuffing and lacked multi-factor payment authentication for high-value transactions. Solution: Three augmented Java engineers embedded FIDO2 WebAuthn, built a gRPC micro-service for OTP delivery, and integrated with existing Netty servers. Continuous delivery pipelines in Jenkins ensured weekly releases. Result: Account takeover attempts fell by 92% and support ticket volume dropped 37% within two months.

Book a 15-Minute Call

120+ Java engineers placed, 4.9/5 avg rating. Book a quick discovery call to see pre-vetted candidates who can harden your payment stack this week.
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Core Services

3DS2 Gateway Build

Design and develop 3-D Secure 2 compliant gateways using Spring Boot, Hibernate, and JMS. Outstaffed Java teams integrate issuer and acquirer APIs, add risk engines, and deliver sandbox environments—saving months over hiring in-house.

Tokenization Service

Implement EMVCo or proprietary token vaults, ensuring PCI scope reduction. Augmented specialists craft micro-services, handle HSM integration, and secure tokens with JCE / Bouncy Castle.

Adaptive Risk Scoring

Java engineers build machine-learning–ready risk modules that score transactions in <1 ms. Service plugs into Kafka streams and dynamically triggers step-up MFA.

Biometric MFA Integration

Embed FIDO2, WebAuthn, and mobile biometrics into existing Java stacks, providing passwordless yet compliant authentication across devices.

Compliance Audit Support

Our developers prepare codebases for PCI DSS, PSD2, and SOX audits—writing documentation, hardening logging, and executing penetration tests.

Legacy Java Upgrade

Refactor monolithic JEE payment apps to cloud-native micro-services, adding MFA at each hop while reducing hosting bills.

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