Staff Video Frontend Engineer

Staff Video Frontend Engineer
Bengaluru (Hybrid)

About Goldcast
Goldcast is an AI-powered B2B Video Content Platform that enables marketers to put video content at the heart of the customer journey. Thousands of B2B marketers, from companies like Intercom, LG, Zuora, OpenAI, and Mailchimp, leverage Goldcast to capture mindshare by more effectively getting in front of their audience, creating and repurposing engaging and consumable video content, and capitalizing on brand authority and intent. Founded in mid-2020 at Harvard Business School, we've raised over $40 million in funding and have 300+ customers across tech, professional services, manufacturing, and finance to deliver engaging video content & digital events.

Role Overview
As a Staff Frontend Engineer specializing in video editing frameworks, you'll lead our effort to build a frame-perfect, multi-track video editor in the browser, combining Remotion for UX and WebCodecs/WASM for low-level video processing. You will extend Remotion’s React layer for UX to enable professional-grade editing features (precise cuts, real-time previews, GPU-accelerated effects) while navigating browser limitations.

What You’ll Do

1. Lead the architecture and development a frame-perfect browser-based video editing framework (supporting cuts, transitions, and multi-track compositing).
2. Design and implement real-time previews using WebGL, OffscreenCanvas, or WebCodecs that mirror final rendering pixel-perfectly.
3. Identify performance bottlenecks and optimize rendering pipelines, with particular attention to input latency and animation fluidity
4. Integrate WebAssembly (WASM) for performance-critical tasks such as frame-accurate video decoding, image processing and audio syncing.
5. Design the timeline core (playhead scrubbing, layer stacking, non-destructive edits).
6. Architect a component system on top of Remotion to bypass its limitations for core video processing.
7. Develop tools to measure and enforce frame-perfect exports (e.g., automated diffing between preview and render).
8. Solve browser-specific challenges (memory limits, GPU acceleration, audio/video sync drift).
9. Collaborate with design and product teams to create intuitive video editing experiences
10. Mentor other engineers on browser media APIs and performance optimization.

What We Seek

1. 8+ years of frontend engineering experience with at least 2+ years in video/audio processing on the browser.
2. Deep expertise in browser media APIs: WebCodecs, Web Audio, MediaStream, Canvas.
3. Experience with frame-accurate video manipulation (e.g., FFmpeg.wasm, custom WebCodecs pipelines).
4. Proven ability to optimize JavaScript/WebAssembly performance (e.g., reducing input latency, smoothing animations).
5. Experience pushing Remotion or similar frameworks beyond its limits for performance critical tasks. e.g., replacing <Video> with WebCodecs, optimizing <Sequence> for multi-track editing.
6. Experience building browser-based media editing or processing tools
7. Shipped WASM-based video/audio tools to production (e.g., FFmpeg.wasm, Rust/C++ for WebAssembly).
8. Experience with GPU acceleration and hardware-accelerated graphics in browser environments

Preferred Qualifications

1. Experience with WebGL/Canvas optimizations for real-time video previews.
2. Knowledge of video codecs (H.264, VP9) and compression algorithms and browser encoding limitations.
3. Experience working with HLS, WebRTC & FFmpeg.
4. Deep understanding of performance challenges in browser environments (e.g., garbage collection pauses, GPU memory leaks)
5. Experience with WebGL-based motion graphics (e.g., shaders for transitions, GPU-accelerated text animations).
6. Familiarity with rendering loops, frame timing, and smooth animation techniques
7. Built developer tools for performance profiling (e.g., frame timings, memory snapshots).

This role isn’t a fit if you:

1. Prefer working with stable APIs (we’re pioneering uncharted browser capabilities).
2. Haven’t debugged frame drops or audio drift in a media app.

What We Offer

1. Greenfield opportunity to define the architecture of a bleeding-edge browser video stack.
2. Work with rare expertise (WebCodecs, WASM, Remotion internals) at scale.
3. Opportunity to work with a best-in-class product, engineering, and design team
4. An incredible culture blending innovation, collaboration, and technical excellence
5. Competitive salary and benefits package
6. Hybrid work environment

About us

Goldcast is a digital events platform for B2B marketers. More than 300 global enterprises across tech, professional services, manufacturing, and finance use Goldcast to deliver engaging digital and hybrid event experiences for their customers and prospects and drive measurable results through them.

Goldcast was founded in mid-2020 at Harvard Business School. Since then, we have raised over $40mn, built a bi-continental team of excellent teammates, and are one of the market leaders in the enterprise digital events space. We count companies such as LG, Adobe, 6Sense, Workday, Zuora, BitSight, Drift, ThoughtSpot, and Clari as customers and were recently featured in G2's list of 100 fastest-growing software companies.

Our sharp market focus and positioning around efficiency & measurability means we are growing really fast, still hiring, have a comfortable runway of 30+ months, and a clear line of sight to quadrupling in the next 2 years.