What services does A Major offer?

A Major offers web design, web app development, mobile app development (React Native, Swift, Flutter), SaaS product development, enterprise systems, UI/UX design, DevOps, performance optimization, MCP server development, AI agent infrastructure, MVP scoping, digital transformation, and engineering consultancy.

Where is A Major based?

A Major is based in Singapore and works with clients worldwide.

Do you work with international clients?

Yes. While headquartered in Singapore, A Major works with founders and businesses across Southeast Asia, Europe, and North America.

Ryu is an AI agent orchestration layer built by A Major. It enables teams to run, coordinate, and monitor AI agents at scale — connecting LLMs, tools, and workflows into reliable production systems.

Do you build MCP servers?

Yes. A Major builds Model Context Protocol (MCP) servers that connect AI agents to databases, APIs, and internal tools, enabling reliable LLM-powered workflows in production environments.

Will WebAssembly replace JavaScript?

No. WASM complements JavaScript — it handles compute-heavy tasks while JavaScript manages DOM, events, and application logic. They work best together.

What languages compile to WASM?

Rust, C, C++, Go, AssemblyScript, and Kotlin all compile to WASM. Rust has the best tooling and produces the smallest binaries. AssemblyScript is easiest for TypeScript developers.

Is WASM faster than JavaScript?

For compute-heavy tasks (image processing, crypto, codecs), WASM runs at 80–90% of native speed — significantly faster than JavaScript. For I/O-bound work, the difference is minimal.

Can WASM run on the server?

Yes. WASI enables server-side WASM on Node.js, Deno, Cloudflare Workers, and standalone runtimes like Wasmtime and Wasmer. Edge computing platforms are the most common server-side WASM use case.

WebAssembly BackendNear-native performance in any runtime

WebAssembly runs at near-native speed in browsers, on servers via WASI, and at the edge via Cloudflare Workers — compiled from Rust, C, or AssemblyScript. We use WASM for compute-heavy tasks that JavaScript can't handle efficiently.

WebAssembly (WASM) is a binary instruction format that runs at near-native speed in browsers, on servers via WASI, and at the edge on platforms like Cloudflare Workers. Compiled from Rust, C/C++, Go, or AssemblyScript, WASM executes compute-intensive tasks that JavaScript can't handle efficiently. At A Major, we use WASM for performance-critical browser features, edge computing, and portable server-side modules. WASM runs in a memory-safe sandbox with capability-based security — no arbitrary filesystem or network access. Combined with SIMD instructions, threading support, and the emerging Component Model for language-agnostic composition, WASM is becoming the universal runtime for portable, high-performance code.

Quick start

bash

cargo install wasm-pack
wasm-pack new my-wasm-lib
cd my-wasm-lib
wasm-pack build --target web

Read the full documentation at webassembly.org

Near-native execution

WASM executes at 80–90% of native speed — image processing, crypto, parsers, and codecs in the browser.

Runs anywhere

Same WASM binary runs in browsers, Node.js, Deno, Bun, and Cloudflare Workers via WASI.

Memory-safe sandbox

WASM runs in a capability-based sandbox — no arbitrary memory access outside its linear memory.

Rust → WASM

wasm-pack compiles Rust to WASM with TypeScript bindings — tight integration with npm packages.

SIMD & threads

WASM SIMD instructions and shared memory threading for parallel workloads in the browser.

Component model

WASM Component Model enables language-agnostic interfaces — compose WASM modules from any language.

Why it's hard

Debugging is harder than JavaScript

WASM debugging tools are improving but less mature than browser DevTools for JavaScript. Source maps and DWARF debug info help but add complexity.

DOM access requires JavaScript glue

WASM can't directly manipulate the DOM. All browser API calls go through a JavaScript interop layer, which adds latency for DOM-heavy operations.

Binary size optimization

WASM binaries can be large without optimization. wasm-opt, LTO, and careful dependency management are needed to keep download sizes reasonable.

WASI standard is still evolving

The WebAssembly System Interface (WASI) for server-side WASM is still being standardized. API surface and runtime support vary across platforms.

Best practices

Use Rust for WASM — it has the best tooling

wasm-pack, wasm-bindgen, and the Rust → WASM compilation path are the most mature and produce the smallest binaries.

Offload compute, not DOM manipulation

Use WASM for image processing, crypto, parsing, and computation. Keep DOM interaction in JavaScript — the interop overhead isn't worth it for UI work.

Use wasm-opt for binary size reduction

Run wasm-opt -Os on your output binary. Combined with gzip/brotli compression, WASM binaries shrink significantly.

Stream-compile with instantiateStreaming

WebAssembly.instantiateStreaming() compiles WASM while downloading — faster startup than loading the entire binary first.

Useful resources

WebAssembly Official Site wasm-pack (Rust → WASM)MDN WebAssembly Guide Bytecode Alliance (WASI)

Frequently asked questions

Rust

Memory-safe systems programming at native speed

Cloudflare Workers

JavaScript at the edge, globally distributed

Looking for end-to-end delivery? These services complement WebAssembly projects.

Want to build with WebAssembly?

Talk to our engineering team about your WebAssembly architecture. We'll respond within 24 hours.

1 spot available in May 2026Apr 2026 fully booked

We limit intake each month so every project gets the focus it deserves.

WebAssembly BackendNear-native performance in any runtime