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Webassembly Jobs (NOW HIRING)

Apple

JavaScriptCore Security Engineer

Cupertino, CA

$147K - $272K/yr

Join us! Description The JavaScriptCore team in WebKit is responsible for the JavaScriptCore engine, and our mission is to make JavaScript and WebAssembly execution both fast and secure.

Zoo

Senior Software Engineer, Frontend

Los Angeles, CA · Remote

Implement advanced AST/code-mods, CodeMirror enhancements, and deep integration with WebAssembly (Wasm) for performance improvements * Utilize Xstate for state management to maintain app consistency ...

Apple

JavaScriptCore Manager

Cupertino, CA

$262K - $393K/yr

The JavaScript team seeks a Software Engineering Manager with deep compiler and virtual machine expertise, ready to support the world's fastest and best JavaScript and WebAssembly VM. The ...

Figma

Software Engineer, C++

San Francisco, CA · On-site

You will be developing high-performance client-side systems in C++/WebAssembly, extending the multiplayer protocols that make collaborative design possible, and building out the communications layer ...

Concord IT Systems

Senior NET developer with Blazor

Woburn, MA · On-site

$60.25 - $76.50/hr

NET technologies. - Experience on Blazor Server and Blazor WebAssembly models - Work closely with the client to gather requirements and ensure that the developed applications meet their business ...

Hark

Audio Software Engineer

San Jose, CA

$170K - $400K/yr

Ship DSP to the client as C++/Rust compiled to WebAssembly, and as TypeScript in the audio pipeline * Tune endpointing, interruption, and turn-taking so the agent listens like a person * Reduce ...

E-Solutions

.NET Developer with Azure Integration

Whippany, NJ · On-site

$55.50 - $69/hr

Deep expertise in Blazor (WebAssembly and/or Server) * Strong .NET Core and C# development experience * Advanced SQL Server skills, including performance tuning and complex query development * Hands ...

New

Hark

Audio Software Engineer

San Jose, CA · On-site

$170K - $400K/yr

Ship DSP to the client as C++/Rust compiled to WebAssembly, and as TypeScript in the audio pipeline * Tune endpointing, interruption, and turn-taking so the agent listens like a person * Reduce ...

Concept Plus

Jr. Python Developer

$51.50 - $71/hr

Build and maintain Python modules intended for Pyodide execution, ensuring compatibility with WebAssembly and browser-based runtimes. * Support lightweight Python execution for DDIL or offline-first ...

Zoo

Senior Software Engineer, Frontend

Los Angeles, CA · On-site +1

$145K - $195K/yr

Familiarity with WebAssembly (Wasm) and its use in web applications for performance enhancements * Understanding of browser internals across major browsers (Chrome, Firefox, Chromium, Brave, etc ...

Concept Plus

Sr. Python Developer

Fairfax, VA · On-site

$125K - $168K/yr

Develop or support Python modules designed for execution in Pyodide environments, including WebAssembly-based packaging, secure runtime constraints, and sandboxed execution models. * Ensure seamless ...

Concept Plus

Sr. Python Developer

$124K - $167K/yr

Develop or support Python modules designed for execution in Pyodide environments, including WebAssembly-based packaging, secure runtime constraints, and sandboxed execution models. * Ensure seamless ...

Fastly

Senior Engineer - Developer Experience

New York, NY · On-site

$181K - $217K/yr

Contribute to the Rust and WebAssembly open source ecosystems What We're Looking For: * You have at least 5 years of software development experience, with at least 3 of those in high-reliability ...

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How much do webassembly jobs pay per hour?

As of Jun 25, 2026, the average hourly pay for webassembly in the United States is $26.34, according to ZipRecruiter salary data. Most workers in this role earn between $15.14 and $30.77 per hour, depending on experience, location, and employer.

What is a WebAssembly job?

A WebAssembly job typically involves developing, optimizing, or integrating WebAssembly (Wasm) modules into web applications or other platforms. Professionals in this role work with languages like Rust, C, or C++ to compile code into Wasm for efficient execution in browsers or other environments. Responsibilities may include performance tuning, security enhancements, and interoperability with JavaScript or other systems.

What are the key skills and qualifications needed to thrive in the Webassembly position, and why are they important?

To thrive in a WebAssembly developer role, you need strong programming skills in languages like C, C++, or Rust, as well as a solid understanding of modern web technologies like JavaScript, HTML, and CSS. Familiarity with WebAssembly toolchains (such as Emscripten or wasm-bindgen), build systems, and experience optimizing for performance are significant assets. Excellent problem-solving, attention to detail, and effective collaboration are standout soft skills for this position. These abilities are crucial for building high-performance web applications, ensuring seamless integration within development teams, and advancing in this fast-evolving field.

What typical responsibilities does a WebAssembly developer have during a project lifecycle?

As a WebAssembly developer, you’ll often be responsible for optimizing code for performance, translating software components from languages like C++ or Rust into WebAssembly, and ensuring their seamless integration with existing JavaScript-based applications. You’ll likely collaborate closely with frontend and backend engineers to identify performance bottlenecks, implement new features, and troubleshoot cross-browser compatibility issues. Managing build pipelines, maintaining documentation, and writing tests are also common tasks. This role requires both independent problem-solving and team collaboration to deliver high-quality, efficient web applications.

More about Webassembly jobs
What cities are hiring for Webassembly jobs? Cities with the most Webassembly job openings:
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Webassembly jobs near you
Infographic showing various Webassembly job openings in the United States as of June 2026, with employment types broken down into 96% Full Time, 1% Part Time, and 3% Contract. Highlights an 87% Physical, and 13% Remote job distribution, with an average salary of $54,791 per year, or $26.3 per hour.
JavaScriptCore Security Engineer

JavaScriptCore Security Engineer

Apple

Cupertino, CA

$147K - $272K/yr

Full-time

Medical, Dental, Retirement

Posted 13 days ago

Apple rating

8.1

Company rating: 8.1 out of 10

Based on 662 frontline employees who took The Breakroom Quiz

6th of 30 rated technology retailers

Job description

In this role, you have the opportunity to help secure the JavaScriptCore virtual machine. The JavaScriptCore team at Apple is looking for system programmers with experience in security, especially in programming languages, compilers, and virtual machines. You will be working to deliver a more secure web for all Apple products both proactively, by ensuring new features are implemented securely, and reactively, by responding to and addressing JavaScriptCore’s unique security challenges. The work is challenging, and the impact and reach are large. Join us!
Description
The JavaScriptCore team in WebKit is responsible for the JavaScriptCore engine, and our mission is to make JavaScript and WebAssembly execution both fast and secure. JavaScriptCore is complex, with many subsystems: the compilation pipeline, the language runtime, the garbage collector and memory allocators, and the API for native apps. These subsystems run untrusted, third-party code, and all of them must do so in a memory safe way.
In this role, you will work across all areas of the engine, focusing on improving security and stability. You will drive new innovations in the security architecture of the codebase. You will fix security issues and respond to fuzzing. You will also ensure that security processes in JavaScriptCore are updated to current best practices and set the project up for a secure future.
Preferred Qualifications
Hands-on experience with VMs with just-in-time compilers (e.g. JavaScript engines and JVMs)
Experience with web browsers
Experience with memory allocators and garbage collectors
Experience with fuzzing, security architecture, and memory safety
Knowledge of JavaScript and WebAssembly
Minimum Qualifications
BS in computer science or equivalent
Experience programming in modern C++
Excellent debugging, critical thinking, and communication skills
Experience developing privacy and security-sensitive software
Experience with compilers, parsers, and interpreters
Experience with assembly-level programming
Pay & Benefits
At Apple, base pay is one part of our total compensation package and is determined within a range. This provides the opportunity to progress as you grow and develop within a role. The base pay range for this role is between $147,400 and $272,100, and your base pay will depend on your skills, qualifications, experience, and location.
Apple employees also have the opportunity to become an Apple shareholder through participation in Apple's discretionary employee stock programs. Apple employees are eligible for discretionary restricted stock unit awards, and can purchase Apple stock at a discount if voluntarily participating in Apple's Employee Stock Purchase Plan. You'll also receive benefits including: Comprehensive medical and dental coverage, retirement benefits, a range of discounted products and free services, and for formal education related to advancing your career at Apple, reimbursement for certain educational expenses - including tuition. Additionally, this role might be eligible for discretionary bonuses or commission payments as well as relocation. Learn more about Apple Benefits
Note: Apple benefit, compensation and employee stock programs are subject to eligibility requirements and other terms of the applicable plan or program.

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About Apple

Sourced by ZipRecruiter

Imagine what you could do here! At Apple, new ideas have a way of becoming extraordinary products, services, and customer experiences very quickly. Bring passion and dedication to your job and there's no telling what you could accomplish. Dynamic, intelligent people and inspiring, innovative technologies are the norm here. The people who work here have reinvented entire industries with all Apple Hardware products. The same real passion for innovation that goes into our products also applies to our practices strengthening our dedication to leave the world better than we found it.

Industry

Computer and electronic product manufacturing

Company size

10,000+ Employees

Headquarters location

Cupertino, CA, US

Year founded

1976

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