Trainee Junior Javascript Developer Jobs in California

WHAT YOU DO AT AMD CHANGES EVERYTHING 

At AMD, our mission is to build great products that accelerate next-generation computing experiences—from AI and data centers, to PCs, gaming and embedded systems. Grounded in a culture of innovation and collaboration, we believe real progress comes from bold ideas, human ingenuity and a shared passion to create something extraordinary. When you join AMD, you’ll discover the real differentiator is our culture. We push the limits of innovation to solve the world’s most important challenges—striving for execution excellence, while being direct, humble, collaborative, and inclusive of diverse perspectives. Join us as we shape the future of AI and beyond.  Together, we advance your career.  

THE ROLE: 

AMD is looking for a strategic software engineering lead who is passionate about improving the performance of key applications and benchmarks. You will be a member of a core team of incredibly talented industry specialists and will work with the very latest hardware and software technology. 

THE PERSON: 

We are seeking a Software Optimization Engineer with deep experience improving realworld browser performance in Chromiumbased browsers. In this role, you will focus on identifying, analyzing, and resolving performance bottlenecks across the Chromium stack, working close to the browser engine, OS, and hardware. This position is ideal for an engineer who enjoys lowlevel performance analysis, systemlevel optimization, and collaborative work with browser, OS, and silicon teams to deliver measurable uservisible gains.

Key Responsibilities

• Profile and optimize performance across Chromium subsystems, including Blink, V8, Skia, GPU/ANGLE, and browser multiprocess architecture
• Identify CPU, memory, GPU, and power bottlenecks using real workloads, benchmarks, and field telemetry
• Implement performance improvements in areas such as page load, rendering, JavaScript execution, graphics/compositing, and browser responsiveness
• Drive optimizations across platforms (Windows primary; Linux/macOS experience a plus), including interactions with OS schedulers, graphics stacks, and drivers
• Analyze performance using industrystandard and custom tools (e.g., Perfetto, ETW, Chrome Tracing, VTune, PIX, GPUView, perf)
• Collaborate with browser vendors, OS teams, compiler teams, and hardware partners to cooptimize software and platforms
• Contribute clean, wellreviewed patches upstream to Chromium or downstream forks as appropriate
• Translate benchmark and microarchitectural findings into practical, scalable browser improvements
• Document performance investigations, results, and best practices; communicate findings clearly to technical stakeholders
• software engineering experience, with a strong focus on performance optimization
• Handson experience working with Chromium or Chromiumbased browsers (e.g., Chrome, Edge, internal forks)
• Strong proficiency in C++ and modern C++ performance best practices
• Deep understanding of browser internals, including at least two of the following:
• Rendering pipeline (Blink lifecycle, style/layout/paint)
• JavaScript engines (V8 internals, JIT behavior, GC)
• Graphics and compositing (Skia, GPU rasterization, ANGLE, WebGL)
• Multiprocess/threading model and IPC in Chromium
• Proven experience using lowlevel profiling and tracing tools to drive optimizations
• Strong debugging skills across large, complex codebases
• Ability to reason from microarchitectural behavior (cache, memory, SIMD, branch behavior) up to userperceived performance

Preferred Qualifications

• Experience optimizing browser performance on Windows, including ETWbased analysis and graphics stack interactions
• Familiarity with Clang/LLVM, compilerdriven optimizations, and codegeneration tradeoffs
• Experience working with performance benchmarks (JetStream, Speedometer, WebXPRT, MotionMark, internal workloads)
• Exposure to hardwareaware optimization (CPU topology, cache behavior, SIMD/AVX, GPU execution models)
• Prior experience contributing to large opensource projects or upstream Chromium performance changes
• Ability to mentor junior engineers and influence performance culture across teams

ACADEMIC CREDENTIALS: 

• Bachelor’s or Master's degree in Computer Science, Computer Engineering, Electrical Engineering, or equivalent 

This role is not eligible for visa sponsorship.

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Benefits offered are described:  AMD benefits at a glance.

AMD does not accept unsolicited resumes from headhunters, recruitment agencies, or fee-based recruitment services. AMD and its subsidiaries are equal opportunity, inclusive employers and will consider all applicants without regard to age, ancestry, color, marital status, medical condition, mental or physical disability, national origin, race, religion, political and/or third-party affiliation, sex, pregnancy, sexual orientation, gender identity, military or veteran status, or any other characteristic protected by law.   We encourage applications from all qualified candidates and will accommodate applicants’ needs under the respective laws throughout all stages of the recruitment and selection process.

AMD may use Artificial Intelligence to help screen, assess or select applicants for this position.  AMD’s “Responsible AI Policy” is available here.

This posting is for an existing vacancy.

Benefits offered are described:  AMD benefits at a glance.

AMD does not accept unsolicited resumes from headhunters, recruitment agencies, or fee-based recruitment services. AMD and its subsidiaries are equal opportunity, inclusive employers and will consider all applicants without regard to age, ancestry, color, marital status, medical condition, mental or physical disability, national origin, race, religion, political and/or third-party affiliation, sex, pregnancy, sexual orientation, gender identity, military or veteran status, or any other characteristic protected by law.   We encourage applications from all qualified candidates and will accommodate applicants’ needs under the respective laws throughout all stages of the recruitment and selection process.

AMD may use Artificial Intelligence to help screen, assess or select applicants for this position.  AMD’s “Responsible AI Policy” is available here.

This posting is for an existing vacancy.