5 days ago
San Diego, CA, USAMid Level / Senior
Base Salary
$105k - $135k/yr
Responsibilities
- Build and maintain card-present payment integrations with Adyen, Shift4, Global Payments, and other providers for the self-service kiosk platform.
- Own authorization, capture, void, refund, reversal, reconciliation, timeout recovery, and partial-failure recovery workflows.
- Work with processor certification teams to certify integrations and deploy them to production.
- Maintain PCI DSS-compliant payment flows using P2PE and tokenization to minimize compliance scope.
- Troubleshoot live payment issues across terminals, kiosks, networks, and backend services.
- Develop unit, integration, and end-to-end tests and improve test coverage.
- Conduct and participate in code reviews, including evaluating AI-generated code for security and correctness.
- Contribute to architecture and design sessions and collaborate with stakeholders and product owners.
Requirements
- 2–5 years of backend development experience in Java or a comparable object-oriented programming language.
- Experience implementing unit, integration, and end-to-end testing strategies.
- Hands-on experience integrating with at least one payment processor or gateway API, preferably with card-present or terminal integrations.
- Understanding of EMV, contactless payments, authorization flows, and settlement flows.
- Working knowledge of PCI DSS and secure payment-data handling.
- Ability to debug across network, device, and service boundaries.
- Understanding of software security practices including OAuth, JWT, and encryption.
- Bachelor’s degree in Computer Science or a related field, or equivalent professional experience.
- Effective English communication skills and strong analytical and problem-solving abilities.
- AWS serverless technologies and services such as DynamoDB and SQS are beneficial but not required.
- Ability to work in a fast-paced environment and handle ambiguity and changing requirements.
Benefits
- Hybrid work arrangement requiring the employee to be based in San Diego, California.
- Medical, dental, vision, FSA, healthcare and dependent-care reimbursement programs, EAP, and Optum Care 24-hour confidential medical counseling services for eligible full-time regular employees and dependents.
- Ten paid holidays per calendar year.
- 15 days of PTO during the first 12 months of continuous service and 22 days in subsequent years for eligible full-time employees; prorated PTO for eligible part-time employees.
- Eligibility for the company 401(k) Plan effective upon employment start date.
- College tuition and education assistance, Udemy courses, and ongoing learning and development opportunities.
About Tillster
Tillster builds a unified commerce platform for multi‑unit restaurant chains, offering online and mobile ordering, delivery management, kiosks, loyalty, and integrated marketing with POS integrations. The privately held company, founded in 2002 and headquartered in Los Angeles, serves global brands including Burger King, Baskin‑Robbins, and Jollibee. Its SaaS model supports personalized guest engagement across channels for large restaurant enterprises.