Ibrahimsyah Zairussalam

Software Engineer

Traveloka

Leading the engineering of marketing data infrastructure, architecting event-driven pipelines that process billions of data points monthly.

• Delivered a full end-to-end audience streaming engine in 10 days against an initial estimate of 25 days, with 91% unit test coverage — now streaming 1B+ audiences to marketing partners daily
• Architecting scalable pipelines using GCP Pub/Sub, Dataflow (Apache Beam), and BigQuery, orchestrated through Apache Airflow with Datadog observability
• Migrated Traveloka to Google Things-to-Do marketing feeder, reducing process time from 6 hours to 15 minutes (2,400% faster), completed 1 month ahead of schedule
• Built a comprehensive in-house budget management tool reducing monthly operational expenses by up to $100,000, handling both backend and frontend development

Mobile Application Engineer

Stealth Startup — Freelance

Developed a cross-platform enterprise application using React Native with Expo for both iOS and Android.

• Implemented offline-first pattern by integrating a local SQLite database, enabling data access and modification without internet connectivity
• Built an automatic data synchronization mechanism that syncs local data with the server on every designated interval or when connectivity is restored

Software Engineer

ByteDance

Collaborated with the development and product team to design a subsystem for an AI Conversational Platform, enhancing the management of a powerful chatbot across various business units.

Software Engineer — Customer Excellence

Tokopedia

Worked in the Chatbot team to build an interactive chatbot helping Tokopedia users solve their problems.

• Optimized operational costs up to 90 million IDR monthly by reducing service dependency to external parties
• Led the development of a chatbot AI conversational design platform, enabling the business team to create interaction trees that effectively address user problems

Software Engineer — New Retail

Tokopedia

Part of the New Retail division democratizing the economy through technology, supporting warung and retailers to grow their business.

• Built a fraud checker algorithm that successfully filtered 1.5 million non-unique (100 million IDR) monthly transactions, leading to cost optimization
• Developed custom linter and code generator tools, making development and review time 50% faster

Software Engineer Intern

Pickupp

Developed multi-regional software on both frontend and backend in a team of 7, using React, React Native, Gatsby, Node.js, and Go with gRPC microservices architecture.

Frontend Engineer Intern

Aksaramaya

Built digital book platforms and public library repositories using React, Redux, and Next.js. Created a digital repository platform for Republic of Indonesia's Attorney General using React.

Mobile Application Engineer

Hash Rekayasa Teknologi

Created a voucher scanner app using React Native for multi-platform support (Android and iOS), leveraging Firebase ML Kit for text recognition and barcode detection.