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Audio Editor – Multitrack Dialogue (Remote, Freelance) at HumanSignal. . Location: International. About HumanSignal. . Real-world data is the competitive edge in AI.. . HumanSignal is a human data partner for companies building AI models and products. Our customers ship better AI, faster, because we partner with their researchers from real-world data creation to annotation to delivery.. . We design and create datasets from scratch, recruit and manage the domain experts who evaluate model output, and run everything through our own platform, Label Studio, the open-source standard for data labeling and evaluation, used by over 1 million practitioners worldwide.. . We specialize in the operationally complex: real-world data collection, multimodal pipelines, and multi-step workflows. Advanced ML and AI teams use our enterprise platform to run their own data factories, and our services team to extend their reach where in-house capacity runs out.. . If you want to do work that materially shapes how the next generation of AI products gets built, we'd love to talk.. Audio Editor – Multitrack Dialogue. . . Location: . Remote. . Type:.  Contract (. 20 to 35 hours per week, 2 to 4 weeks initially with potential to extend). . Duration: . Immediate start; group training on Monday, October 27. . . You’ll master multitrack recordings from our production studio and deliver them to spec through our platform. Each session captures a user mic, an assistant mic and four channels from a Zoom field recorder. The four-channel portion is where most of the work lives: each channel needs individual leveling, noise reduction and timing alignment so the mix stays even across the stereo field. You’ll work from a rubric, hand off to QA, and flag recording issues (camera movement during dialogue, sync problems) back to the production team.. .  . . This is a hands-on editing role. We’re looking for people who can work channel by channel in a DAW, not people who rely on one-click AI cleanup tools.. . What you’ll do. . . Master roughly one file per 3 hours: clean, denoise, level and align six tracks per session. . Apply and adjust processing per channel; correct timing offsets between channels. . Deliver files in the required format and loudness spec through our platform. . Follow the QA rubric and incorporate feedback from reviewers. . Note recurring audio problems so the studio team can fix them at the source. . . What we’re looking for. . . Proficiency in a professional DAW (Reaper, Pro Tools, Adobe Audition, Logic or similar). . Experience with multitrack dialogue editing and field recorder audio. . Strong noise reduction skills (iZotope RX or comparable). . Ability to hear and correct timing and phase issues between channels. . Consistency and speed; you can hit a quality bar repeatedly across dozens of files. . Availability for full-time hours for at least the next two weeks. . . Nice to have. . . Background in podcast, film or broadcast post-production. . Experience working to a rubric or client spec at volume. . Familiarity with Zoom H-series or F-series recorders.