Backend Payments Engineer — Card-Present Integrations

Tillster; San Diego (CA); Hybrid; USD 105,000 - 135,000; Full time

Benefits offered by this job

Health benefits

Paid holidays

PTO

401(k) plan

Tuition assistance

Job summary

Tillster is hiring a Software Engineer – Back End (Payments) to build and maintain card-present payment integrations for self-service kiosks. You will own the full transaction lifecycle, from authorization to reconciliation, and collaborate with processor teams to certify integrations for production.

Join a fast-paced, hybrid team in San Diego, focusing on secure, scalable payments, testing, and continuous improvement of our platform for restaurants and consumers worldwide.

Qualifications

• 2 to 5 years of backend development in Java or a similar language.
• Hands-on experience with payment processor or gateway integrations.
• Knowledge of PCI DSS and secure handling of payment data.
• Experience with automated testing strategies (unit/integration/e2e).
• Familiarity with AWS serverless technologies is a plus.

Responsibilities

• Build and maintain card-present payment integrations for self-service kiosks.
• Own the full transaction lifecycle: authorization, capture, refunds, and reconciliation.
• Collaborate with processor certification teams to achieve production readiness.
• Ensure PCI DSS compliance and secure tokenization of data.
• Write robust tests and participate in code reviews and design sessions.
• Work with product owners to translate requirements into scalable solutions.

Skills

Backend development

Testing strategies

Payment processor integration

Security best practices

English communication

Education

Bachelor's degree in Computer Science or related field

Tools

AWS serverless

DynamoDB

SQS

Job description

Tillster is hiring a Software Engineer – Back End (Payments) to build and maintain card-present payment integrations for self-service kiosks. You will own the full transaction lifecycle, from authorization to reconciliation, and collaborate with processor teams to certify integrations for production.

Join a fast-paced, hybrid team in San Diego, focusing on secure, scalable payments, testing, and continuous improvement of our platform for restaurants and consumers worldwide.