Oey, Kevin Andrian Santoso

Backend Engineer, Jakarta

A leading Indonesian online stock trading and social investing platform, where retail investors discuss, analyze and trade stocks in one place.

• Develop and maintain backend systems powering financial data across Stockbit, including stock, mutual fund, company, index, and crypto-related features.
• Contributed to the launch of crypto as a new asset type by implementing core backend functionality including crypto symbol profiles, watchlist integration, and chart-related features.
• Collaborate with product managers, QA engineers, technical leads, and engineering managers throughout requirement analysis, architecture design, implementation, testing, staged rollout, and production monitoring.
• Integrate company-approved AI coding tools into the software development lifecycle for requirement analysis, edge-case discovery, architecture exploration, implementation planning, code assistance, and test-case generation, while independently reviewing and validating all generated outputs before deployment.

Backend Engineer, Jakarta

The leading e-commerce platform in Southeast Asia and Taiwan.

• Involved in technical initiatives across 3 core ShopeePay domains (payments, reconciliation, and credit card systems), coordinating with 5–7 cross-functional teams of engineers, QA, and product managers to deliver stable weekly releases.
• Received an Outstanding Quality Individual Award for maintaining zero personal bug density throughout development cycles.
• Rewrote a mission-critical credit card service from Python to Go, achieving over 90% improvement in processing efficiency and performance.
• Designed and implemented a high-performance Go wrapper service to interface with legacy Java JAR modules for bank integrations, improving reliability and maintainability.

Backend Developer Intern, Jakarta

Founded in 2011, one of Indonesia's largest e-commerce companies, serving B2B, B2C, and B2B2C markets.

• Implemented a microservices architecture and leveraged Apache Kafka for real-time event processing, improving system throughput by 30% and reducing data synchronization latency by 40%.
• Optimized caching strategies with Redis, reducing database load by 40% and improving API response times by 50%, leading to a 2x faster user experience.
• Diagnosed and resolved 20+ production issues, reducing incident recurrence by 60% through comprehensive root cause analysis (RCA) and preventive fixes.
• Developed and deployed 15+ RESTful APIs, integrating PostgreSQL, Redis, and authentication mechanisms, ensuring 99.9% uptime and achieving 30% faster API responses.

Game Developer, Jakarta

• Developing a 2D multiplayer platformer with strategic fighting mechanics in Godot Engine, targeting 1,000+ concurrent players.
• Used Godot's reliable UDP networking protocol, ensuring <100ms latency and reducing lag spikes by 30% in multiplayer matches.
• Architected the backend using C# and PostgreSQL, handling 5,000+ game state updates per second for real-time interactions.

Contestant, Jakarta

The oldest, largest, and most prestigious programming contest in the world.

• Qualified as an ICPC 2022 contestant, competing in a team of three, after placing in the top 50 of the Indonesia National Contest (INC) 2022 among 700+ teams.
• Solved 5 complex algorithmic problems within a 5-hour timeframe, demonstrating expertise in data structures, constructive algorithms, and dynamic programming.