Official website



Other skills

Audio Specialist, Editing, Enhancement, Optimization, Sound Technician

Highlighted references

• “Yoga Wave” mobile app, Bending Spoons S.p.A. Millian: Large volume of videos for audio finalization/mastering, quality control and editing.
• “Sleep” mobile app from Bending Spoons S.p.A Millian: Large volume of videos for audio quality control check, editing and mastering.
• Ballyfermot College of Further Education: Sound Technician and Engineer, Digital Recording Studio Co-Mangager, Music Recording Assistant.

You need to login or register to bookmark/favorite this content.


FAQ, About

About Séin Mackay

Sound mastering | Ireland

I get huge job satisfaction from assisting projects to run smoothly and ensuring audio is delivered at its best. I specialize in sound mastering, sound design, editing, mixing, audio enhancement, music production, technical support. In my career as an audio specialist I am drawn to projects that involve supporting people and companies with a strong affiliation with digital audio. I am deeply passionate about helping audio and people, and I have a life long love of sound, music technology and art.

Currently I am an Independent Service Provider working remotely from my professional sound studio. I work with international clients regularly and have edited and mastered audio content in 8 languages.

In my work I excel at finalizing and preparing audio for optimal playback with excellent sound for Public Release, Digital Media, Broadcast Radio, Podcasts, Mobile Platforms, Music, Video and Web. My specialist fields are, but not limited to, Editing and Audio Post Production, Music, Voice audio, Quality Control, AV Editing and Enhancement, Technical Support and Creative Collaboration.

TOP RATED AUDIO SPECIALIST: 99% 5/5 stars, across 70+ reviews over, 4 consecutive years working remotely.
5/5 ⭐ “Simply #1, would give 6/5.” – – – 5/5 ⭐ “Sein is a magician.” – – – 5/5 ⭐ “Highly highly recommended, a total professional and a total gent.”

• 20+ years’ dedicated to Sound, Music, Creative Production and Technical Support.
• 30+ years studying, collaborating and performing music.
• My work as an independent audio specialist has received industry recognition with high praise and support form legendary Irish musician and song writer Christy Moore.
• I have had the pleasure of working on 3 of flag ship products with leading mobile application developer Bending Spoons S.p.A. Milan, who retained their title as Italy’s best place to work for millennial’s in 2020.
• For 2.5 years I worked as a volunteer audio editor and mastering engineer on an award wining US broadcast radio talk show and podcast “The Opperman Report” – Producers Choice Honors FAME Award 2019 (true crime, news and political topics).

• Audio Editor, Sound and Mastering Engineer.
• Sound Technician.
• Production, Creative and Technical Support.
• Remote Service Provider.
• Music and Music Production.
• AV Editing and Enhancement.


Year Project name Client Role
2013 Mandolinia – Music Album Simon Meyler Clarinet
2010 All She Whispers – The Deadly Mechanism – Music Album Forever Endeavour Records Recording, Mixing, Mastering, Clarinet, Melodica, Rhtym Guitar
2009 Invasion – Music EP Liberty*Kings Recording, Mixing, Mastering


Year Award Awarded for
2021 Audio Specialist Freelancer with 70+ service reviews, 99% 5 stars 3+ consecutive years delivering top rated remote services, 50+ locations worldwide served remotely.
2020 Top Rated Plus Upwork Freelancer Consistent high-quality + Success on larger longer term projects + 100% Job success score
2019 Top Rated Upwork Freelancer Consistent high-quality remote service
2006 Music Technology 2 year Higher National Diploma, BTEC Level 5 Distinction Grade Average


Year School Course
2006 Ballyfermort College Of Further Education Music Technology, BTEC Level 5 Higher National Diploma
1990 Tutored and Indepentant Studies 30 Years Practial Studies: Music Performance, Compositon, Collaberation and Production

Share this portfolio