Keith Fong

Wise · Singapore

• Lead engineering for Wise's card adoption and early customer experience domain — card ordering, availability, fulfilment, manufacturing integrations, back-office tooling, alerting, monitoring, and incident management
• Own PCI-sensitive card systems including encryption and decryption flows for sensitive card data, supporting multiple yearly compliance audit cycles
• Shaped a scalable approach for operating card systems in India's data-regulated environment, balancing local regulatory requirements with Wise's global platform model
• Support Wise card launches and expansion across markets including the US, India, Brazil, Malaysia, and others — both consumer and business segments
• Support engineers leading Auto Top-up and Bill Split initiatives — providing technical direction, unblocking delivery, navigating stakeholders, and growing engineers
• Coach engineers through RFC writing, technical ownership, stakeholder alignment, global approvals, and promotion growth

Wise · Singapore

• Core engineer on card issuance infrastructure — systems that provision and lifecycle-manage debit cards across Wise's global card programmes
• Built issuance flows for new market expansions, handling regulatory requirements and card network integrations (Mastercard, Visa)
• Reduced card issuance failure rates by diagnosing and fixing edge cases across the card lifecycle pipeline
• Operated high-throughput backend services with on-call rotation, incident response, and post-mortem culture

Wise · Singapore

• Early engineer on Spend Issuance — helped build and scale the card issuance platform from greenfield to production
• Shipped core card lifecycle features: issuance, activation, pin management, and card controls used by millions of customers
• Worked across the stack (Kotlin, Java, Terraform) with exposure to payment processing, card network APIs, and infrastructure-as-code

GovTech Singapore · Singapore

• Built a Dockerized form submission platform handling 100+ form types for government digital services
• Integrated Camunda workflow engine for automated form verification and routing
• Wrote test suites and CI pipelines with git hooks — shipped to production during the internship

Edison Software · San Jose, California

• Built a full-stack calendar plugin integrating with 8 email providers (Google, Microsoft, CalDAV) used by 100k+ users
• Designed a recurrence engine handling timezones, daylight savings, and offline SQLite storage
• Mentored fellow interns on React, Redux, and engineering best practices