Audio Algorithm / DSP Engineer for Music Mastering Platform (Stemy)

# DSP / AUDIO PROCESSING ENGINEER (MASTERING) – LONG-TERM OPPORTUNITY We are looking for an experienced **DSP / Audio Processing Engineer** with **professional mastering experience** to help develop commercial-quality stereo mastering chains for our online mastering platform, **STEMY™**. STEMY is an online stereo mastering platform built for producers, rappers, singers, engineers, and independent artists. The frontend and backend platform is already in active development by our full-stack developer. We are now looking for someone with both strong DSP knowledge and real-world mastering experience to help shape the sound quality of the platform. Our goal is to build one of the best online stereo mastering platforms for modern music, starting with Hip-Hop, Trap, and R&B. ## Current Focus For launch we are focusing on: * Hip-Hop * Trap * R&B Future genres may include: * Pop * EDM * Rock * Country * Acoustic * Afrobeat --- ## What We Need We are looking for someone who can: * Design and refine commercial-quality stereo mastering chains * Create mastering chains that compete with modern major-label releases * Balance loudness, punch, warmth, stereo width, and clarity * Create genre-specific sonic character * Help translate mastering concepts into audio processing logic * Optimize chains for consistent automated mastering results * Collaborate with our existing full-stack developer when integration is needed --- ## Desired Sound The sound should be: * Full analog-style character * Tight, punchy low end * Hard-hitting drums and 808s * Warm and musical * Wide stereo image * Clear, upfront vocals * Smooth high frequencies * Rich harmonic saturation where appropriate * Competitive loudness without sounding over-processed * Streaming and radio-ready * Consistent translation across headphones, cars, Bluetooth speakers, clubs, and studio monitors --- ## Hip-Hop Chain Goals * Powerful punch * Tight bass * Strong transient impact * Commercial loudness * Wide stereo image * Warm analog feel * Polished major-label sound --- ## Trap Chain Goals * Hard-hitting 808s * Clean low-end translation * Loud modern trap energy * Vocal clarity without muddy bass * Aggressive but controlled limiting * Powerful stereo image --- ## R&B Chain Goals * Warm analog-style tone * Smooth highs * Emotional vocal clarity * Controlled dynamics * Wide stereo image * Polished commercial sound --- ## Required Experience * Professional mastering engineering * DSP / Audio Processing * Stereo mastering chains * EQ * Compression * Saturation * Stereo imaging * Limiting * LUFS / True Peak standards * Streaming loudness optimization * Critical listening and mastering judgment We are looking for someone who understands both the technical side of DSP and the artistic side of commercial mastering. --- ## Technical Experience Experience with one or more of the following is preferred: * Python * C++ * JUCE Framework * FFmpeg * Web Audio API * Audio DSP frameworks * Audio plugin development * Automated mastering systems --- ## Communication * Good English communication * Comfortable discussing revisions * Able to explain technical and sonic decisions clearly --- ## Please Do Not Apply If * Your experience is limited to basic mixing or mastering * You are only a web developer * You do not have DSP or audio processing experience --- ## Budget Independent startup with milestone-based payments. Looking for a long-term collaborator as STEMY expands into additional genres, stem mastering, and future DSP features. --- ## When Applying Please Answer 1. What DSP or audio processing tools and frameworks do you use? 2. Have you designed mastering chains or worked on automated mastering systems before? 3. Can you create different mastering chains for multiple genres? 4. What commercial sound are you strongest at? 5. Please send 1–3 examples of your mastering work. 6. What experience do you have with Python, JUCE, FFmpeg, C++, or other DSP frameworks? 7. If you were designing a Hip-Hop mastering chain from scratch, what would your signal flow and overall approach be, and why? We are looking for someone with excellent ears, strong DSP knowledge, and a passion for creating commercial-quality mastering for modern music.