Antonio Saric

Senior full-stack engineer and technical lead with 8+ years of software engineering experience, including 5+ years building IMVU payment systems.

Reduced

Android purchase chargebacks by 90% and repaired Apple and Google purchase flows.

Experience spans subscriptions, transaction APIs, digital goods, platform migrations, and compliance implementation.

Senior Full Stack Engineer / Tech Lead - Together Labs / IMVU

(2021-03)

• Reduced Android purchase chargebacks by 90% by correcting the Google purchase flow: added webhooks for non-subscription purchases, fixed success responses to mobile clients, and implemented Google API acknowledgment and consumption handling.
• Reworked Apple order processing to support StoreKit 2 and resolve purchase-flow crashes; completed the repair in March 2026.
• Developed tiered VIP subscription functionality and contributed to multi-month VIP offerings and mobile subscription fixes.
• Migrated NFTs between blockchains, then removed blockchain dependencies and converted NFTs into Limited Edition products; completed the conversion in February 2026.
• Implemented API reporting for European Digital Services Act (DSA) requirements in May 2026. Coordinated multiple engineers on a separate PCI compliance project and authored its technical plan.
• Built and maintained PHP payment services and JavaScript interfaces across legacy and newer IMVU platforms, with unit and integration tests and MySQL schema changes.
• Developed digital-goods transaction endpoints for purchasing, listing, delisting, and updates, including transaction tables and support for sharded NFT transactions.
• Implemented VCOIN purchase functionality and balance-discrepancy handling, contributed to VCORE deposits, and migrated VCOIN processing to a work queue.
• Integrated Veriff age verification, coordinating directly with the vendor's engineers, documenting the technical approach, and completing the QA handoff.
• Led delivery for four engineers, reviewed pull requests, and created technical plans and estimates. Led knowledge transfer from Red Team and MetaJuice to the Money team and documented production troubleshooting procedures.

Tech Lead - Levelplaysports.com

(2017-06 - 2020-04)

• Led a team of four engineers and managed project delivery, Jira tracking, and technical documentation for a PHP, AngularJS, MySQL, and AWS application.
• Created automated PHPUnit tests for APIs and database changes; built a CMS with role-based access, database editing, tracking, and statistics.

MS - Operations and Project Management - Southern New Hampshire University (2015)

Software Development - Dev Bootcamp (2017)