Rust Developer/WASI Engineer

We are looking for a Senior Rust engineer who can design, build, and optimise Wasm modules that integrate with our MuleSoft-based integration layer and external billing APIs. You will join a tight, high-trust squad led by an experienced Team Lead and work on-site in Makati two to three days per week, with the remaining days remote.

Key responsibilities

• Design, code, and maintain high-performance Rust libraries and binaries that compile to WebAssembly and run under WASI in production.
• Build new features for AX1’s invoice, payment, and policy APIs, ensuring secure input validation and error handling in accordance with enterprise API-policy standards.
• Optimise memory-safe, low-latency data pipelines that process high-volume billing events in near-real time.
• Collaborate with integration engineers to expose Wasm modules through MuleSoft; MuleSoft knowledge is appreciated but not mandatory.
• Review pull requests, mentor pee...