Most teams know what WebAssembly can do but get stuck on the toolchain — compilation flags, memory management, JS interop, browser compatibility across engines. Curotec has shipped Wasm modules from Rust, C++, and Go into production environments where the performance gains actually mattered and the integration didn’t break what was already working.
WebAssembly Development That Runs at Native Speed
Our engineers compile your native code to Wasm and deploy it to production, from in-browser computation to WASI-based edge functions.
👋 Talk to a WebAssembly engineer.
Trusted and top rated tech team
When JavaScript hits the wall
JavaScript handles most web workloads, but it breaks down when your application needs to process large files, render complex visuals, or run computation-heavy logic in real time. Curotec compiles performance-critical code to WebAssembly so it runs at near-native speed in browsers, on servers, and at the edge — without rewriting your existing codebase in JS.
Our capabilities include:
- Native code compilation to WebAssembly modules
- Browser-side integration with existing JavaScript applications
- WASI configuration for server and edge deployment
- Sandboxed plugin architectures for SaaS extensibility
- Legacy desktop application porting to web delivery
- Performance optimization for computation-intensive workloads
Who we support
WebAssembly solves different problems depending on where your bottleneck is — browser performance, code portability, or infrastructure overhead. Curotec works with teams that have already identified Wasm as the right tool and need engineers who can compile, integrate, and ship it.
SaaS With Heavy Client-Side Logic
Your users are waiting on file processing, data visualization, or real-time calculations that JavaScript can't handle fast enough. We compile that logic to Wasm so the heavy lifting runs at near-native speed alongside your existing frontend.
Teams Porting Native Code to Web
You have a C++, Rust, or Go codebase doing the real work on desktop or server, and rewriting it in JS doubles your maintenance surface. We compile it to WebAssembly so it runs in the browser from a single source.
Platform Teams Building at the Edge
Your serverless functions cold-start in seconds when they could start in under a millisecond. We deploy WASI-based Wasm modules to edge networks and plugin sandboxes as lightweight alternatives to containers.
Ways to engage
We offer a wide range of engagement models to meet our clients’ needs. From hourly consultation to fully managed solutions, our engagement models are designed to be flexible and customizable.
Staff Augmentation
Get access to on-demand product and engineering team talent that gives your company the flexibility to scale up and down as business needs ebb and flow.
Retainer Services
Retainers are perfect for companies that have a fully built product in maintenance mode. We'll give you peace of mind by keeping your software running, secure, and up to date.
Project Engagement
Project-based contracts that can range from small-scale audit and strategy sessions to more intricate replatforming or build from scratch initiatives.
We'll spec out a custom engagement model for you
Invested in creating success and defining new standards
At Curotec, we do more than deliver cutting-edge solutions — we build lasting partnerships. It’s the trust and collaboration we foster with our clients that make CEOs, CTOs, and CMOs consistently choose Curotec as their go-to partner.
Helping a Series B SaaS company refine and scale their product efficiently
Why choose Curotec for Wasm development?
1
Extraordinary people, exceptional outcomes
Our outstanding team represents our greatest asset. With business acumen, we translate objectives into solutions. Intellectual agility drives efficient software development problem-solving. Superior communication ensures seamless teamwork integration.
2
Deep technical expertise
We don’t claim to be experts in every framework and language. Instead, we focus on the tech ecosystems in which we excel, selecting engagements that align with our competencies for optimal results. Moreover, we offer pre-developed components and scaffolding to save you time and money.
3
Balancing innovation with practicality
We stay ahead of industry trends and innovations, avoiding the hype of every new technology fad. Focusing on innovations with real commercial potential, we guide you through the ever-changing tech landscape, helping you embrace proven technologies and cutting-edge advancements.
4
Flexibility in our approach
We offer a range of flexible working arrangements to meet your specific needs. Whether you prefer our end-to-end project delivery, embedding our experts within your teams, or consulting and retainer options, we have a solution designed to suit you.
How we deploy WebAssembly in production
Native Code Compilation
Compile your C++, Rust, or Go logic to optimized Wasm binaries tuned for size and execution speed across target environments.
JavaScript Interop & Module Loading
Load your Wasm modules alongside existing JavaScript through clean API boundaries that keep both layers maintainable.
Edge & Serverless Deployment
Deploy your functions on WASI-compatible runtimes at the edge where startup is instant and container infrastructure isn't required.
Sandboxed Plugin Architecture
Run third-party code inside Wasm's memory-safe sandbox without risking your application's stability or data access.
Legacy Application Porting
Port your desktop codebase to the browser through Wasm compilation that preserves existing behavior from a single source.
Performance Profiling & Optimization
Profile and tune your Wasm modules to eliminate binary bloat and hit the execution targets your application requires.
What powers our WebAssembly builds
Compilation Toolchains
Curotec selects and configures the right compiler pipeline for your source language, target environment, and binary size requirements.
- Emscripten – Compiles C and C++ to WebAssembly with POSIX emulation, filesystem access, and OpenGL-to-WebGL translation for ported applications
- wasm-pack – Builds Rust crates into npm-ready Wasm packages with auto-generated JavaScript bindings and TypeScript definitions
- TinyGo – Produces compact Wasm binaries from Go source code optimized for size-constrained environments like browsers and edge runtimes
- Clang/LLVM – Direct C and C++ compilation to Wasm targets through LLVM’s backend without the Emscripten runtime overhead
- AssemblyScript – TypeScript-like language that compiles directly to WebAssembly for teams that want Wasm performance without learning Rust or C++
- Binaryen – Wasm-specific optimizer and compiler toolkit that reduces binary size and improves execution speed as a post-compilation step
Runtimes & Execution Environments
Your Wasm modules need a runtime matched to the deployment target — browser engine, server process, or edge network.
- Wasmtime – Bytecode Alliance runtime for running Wasm outside the browser with WASI support and ahead-of-time compilation
- Wasmer – Universal Wasm runtime that embeds into applications across languages including Python, Ruby, Go, and Rust
- V8 – Google’s JavaScript and Wasm engine powering Chrome and Node.js with JIT and ahead-of-time compilation for Wasm modules
- Cloudflare Workers – Edge runtime that executes Wasm at over 300 global locations with sub-millisecond cold starts and no container overhead
- Fastly Compute – Edge compute platform running Wasm modules compiled from Rust, Go, or JavaScript at Fastly’s global network edge
- Node.js – Server-side Wasm execution through V8’s built-in WebAssembly support for backend workloads alongside existing Node applications
JavaScript Integration & Bundling
Connecting Wasm modules to your JavaScript app requires bindings, loaders, and maintainable bundler setup.
- wasm-bindgen – Generates high-level JavaScript bindings for Rust-compiled Wasm with automatic type conversion and DOM access
- WebAssembly JS API – Browser-native interface for loading, instantiating, and calling Wasm module functions from JavaScript
- Webpack – Bundles Wasm modules alongside JavaScript assets with async loading support and proper content hashing for cache control
- Vite – Dev server and bundler with native Wasm import support that loads modules during development without extra plugin configuration
- Web Workers – Runs Wasm computation off the main thread so heavy processing doesn’t block UI rendering or user interaction
- ES Module Integration – Imports Wasm modules using standard ESM syntax for cleaner dependency management in modern JavaScript applications
Testing & Validation
Our engineers validate Wasm modules across compilation targets, browser engines, and runtimes before deployment.
- wabt (WebAssembly Binary Toolkit) – Translates between binary and text formats for manual inspection, validation, and debugging of compiled modules
- Chrome DevTools – Source-mapped Wasm debugging with breakpoints, memory inspection, and performance profiling inside the browser
- Pest – Runs unit and integration tests against Wasm-dependent application logic in Laravel and PHP environments
- cargo test – Rust’s built-in test runner validating Wasm-targeted crate logic before compilation through wasm-pack
- wasm-opt – Validates and optimizes compiled Wasm binaries with configurable passes that catch malformed output from upstream compilers
- Playwright – End-to-end browser testing that verifies Wasm module behavior across Chrome, Firefox, and Safari in automated pipelines
Edge & Server Deployment
WASI-compatible runtimes bring Wasm’s sandboxed execution model to servers, edge networks, and plugin environments.
- WASI – WebAssembly System Interface providing POSIX-like capabilities for file I/O, networking, and environment access outside the browser
- Fermyon Spin – Framework for building and deploying Wasm-based microservices with built-in HTTP triggers and key-value storage
- wasmCloud – Distributed application platform that runs Wasm components across cloud and edge with capability-based security
- Docker + Wasm – Container runtime integration that runs Wasm workloads alongside traditional containers through containerd shims
- Envoy Proxy-Wasm – Extends Kubernetes service mesh behavior with custom Wasm filters for traffic routing, auth, and rate limiting
- Terraform – Provisions the cloud and edge infrastructure that hosts your Wasm runtimes across AWS, Cloudflare, and Fastly
Monitoring & Performance Tuning
Tracking module size, execution time, and memory usage ensures your Wasm code stays fast after the initial deployment.
- Twiggy – Code size profiler for Wasm binaries that identifies which functions and dependencies contribute the most to binary bloat
- wasm-snip – Removes unreachable functions from compiled Wasm modules to reduce binary size without modifying source code
- Datadog – Production monitoring for Wasm workloads running on edge and server runtimes with latency and error rate tracking
- Prometheus – Time-series metrics collection for tracking Wasm module execution times, memory consumption, and request throughput
- Lighthouse – Audits browser-loaded Wasm modules for performance impact on page load, time to interactive, and total blocking time
- Chrome Performance Tab – Flame chart profiling that traces Wasm function execution alongside JavaScript to identify cross-boundary bottlenecks
FAQs about our WebAssembly services
When does WebAssembly make sense over JavaScript?
When your application hits a performance wall — file processing, real-time rendering, heavy computation. If JavaScript handles the workload fine, there’s no reason to add Wasm. We help teams identify where the gains justify the complexity.
Which languages can compile to WebAssembly?
Over 40, but Rust, C++, and Go have the most mature toolchains. AssemblyScript works well for TypeScript-familiar teams. We match the source language to your team’s existing skills and the deployment target.
Does WebAssembly replace JavaScript?
No. Wasm handles the compute-heavy parts while JavaScript manages DOM interaction, event handling, and UI logic. They run side by side in the same application through well-defined API boundaries.
Can Wasm run outside the browser?
Yes. WASI gives Wasm a standardized system interface for server and edge environments. We deploy Wasm modules to runtimes like Wasmtime, Cloudflare Workers, and Fastly Compute as lightweight alternatives to containers.
How much faster is WebAssembly than JavaScript?
It depends on the workload. Computation-heavy tasks typically see 2-10x improvements. The real gains come from avoiding JavaScript’s garbage collection pauses and JIT warmup overhead on sustained processing.
Can you port our desktop app to Wasm?
We do this regularly with C++ and Rust codebases. The compiled Wasm module preserves your existing logic while running inside the browser’s sandbox, so you maintain one source instead of rewriting in JavaScript.
Ready to have a conversation?
We’re here to discuss how we can partner, sharing our knowledge and experience for your product development needs. Get started driving your business forward.
