Senior Xstore Engineer

Duration: 5+ Months

Location: TX-Irving, Hybrid 3-4 days onsite

Overview: Every Turnberry consultant belongs to a practice, an internal group of consultants and leaders with shared experience and expertise. Each of these practices aligns to one of the core services Turnberry offers to clients. As a Senior Xstore Engineer, you will join Turnberry's Digital Modernization practice, where technology and strategy combine to deliver exceptional digital experiences, empowering organizations to thrive in today's digital market.

Responsibilities:

POS Payments

Design and implement payment flows within Oracle Xstore (v23+) including card present, contactless, wallet, gift, split-tender, returns, and others

Mobile Payments (In-Store)

Implement and optimize SoftPOS and mPOS solutions and app-to-app payment flows integrated with Oracle Xstore and EFTLink

Integrate and Optimize Gateways

Build and optimize integrations with FreedomPay and Adyen (transaction routing, tokenization, dynamic currency conversion, fallback, retries, and settlement reconciliation)

Security and Compliance by Design

Ensure solutions align to PCI DSS, EMV, P2PE, tokenization, and SRED standards

Partner with Security and Compliance to pass audits with zero findings

Reliability and Observability

Instrument payment flows end-to-end (POS ? payment device ? gateway) with robust logging, metrics, tracing, and alerting

Reduce false declines and timeouts

Performance Engineering

Profile and improve transaction latency at the lane

Optimize network time and device responsiveness

Tune retry/backoff and circuit-breaking strategies

Vendor and Store Partnership

Collaborate with device vendors, gateway TAMs, and Field Ops

Write playbooks and run pilots and phased rollouts

Quality at Scale

Establish automated test strategies (unit, integration, and simulated payment device tests), canary rollouts, and safe rollback plans across multi-store deployments

Modernize and Migrate

Contribute to platform modernization (API-first, microservices, containerization where appropriate) while maintaining compatibility with Xstore extensions and orchestration layers

Mentor and Lead

Provide technical guidance, code reviews, and best practices for POS and payment development across the team

Qualifications:

5-8+ years software engineering experience with Oracle Xstore (back office and POS) and EFTLink including extension development, services, and deployment

Hands-on experience implementing SoftPOS in Handheld devices integrated with Oracle Xstore and EFTLink, app-to-app flows and large-scale production rollout across store fleets

Hands-on integration with at least one of FreedomPay or Adyen gateways for in-store (card-present) payments; strong grasp of gateway configuration, routing, reconciliation, and settlement flows

Deep knowledge of payment fundamentals: card-present transaction lifecycle, EMV kernel flows, tokenization, PAN handling, PCI scope reduction, P2PE, offline/stand-in, and chargeback handling

Strong proficiency in Java (Xstore), plus experience with RESTful services, message queues, and integration patterns

Experience with payment devices (e.g., Ingenico/Verifone) including firmware/config, terminal management, and connectivity modes

Proven experience with observability (logs/metrics/traces), CI/CD, and production support at scale (thousands of registers)

Excellent collaboration skills with Operations, Networking, and Security; clear communication and documentation

Preferred Qualifications:

Experience with both FreedomPay and Adyen (including routing, digital wallets, store-and-forward, dynamic routing rules)

Experience with device management (MDM/terminal management systems), certificate lifecycle, and key injection processes

Exposure to tax, promotions, pricing integrations and returns/exchanges flows across OMS/ERP

Scripting for ops automation (e.g., Python, PowerShell, or Bash)

Prior work with high-availability designs for multi-tenant payment topologies

The salary range for this role is $110,000 to $155,000 or the hourly equivalent. Pay is based on several factors including but not limited to education, work experience, certifications, etc. In addition to your salary, Turnberry Solutions offers benefits such as a comprehensive healthcare package (medical, dental, vision), disability and group term life insurance, health and flexible spending accounts, a utilization bonus, 401(k) with match, flexible time off for salaried employees, parental leave for salaried employees, and flexible work arrangements (all benefits are subject to eligibility requirements). No matter where or when you begin a career with Turnberry, you'll find a far-reaching choice of benefits and incentives.

At Turnberry, we are committed to creating a positive and connected work environment for all and are fully invested in and focused on hiring and growing a diverse team of high performers. We believe that uniqueness in ideas, experiences, and backgrounds make us a better Turnberry: Turnberry is an Equal Employment Opportunity employer, and recruits, employs, trains, compensates, and promotes regardless of age, ancestry, family medical or genetic information, gender identity and expression, marital, military, or veteran status; national and ethnic origin; physical or mental disability; political affiliation; pregnancy; race; religion; sex; sexual orientation; and any other protected characteristics.

Americans with Disabilities Act (ADA)

Turnberry will provide reasonable accommodation with our application process upon request as required to comply with applicable laws. If you have a disability and require accommodation assistance in this application process, please send an email to our Human Resources department at