Filipe Fonseca
Tech lead and software engineer building music technology
I’m Filipe Fonseca, a tech lead at SuperSim in São Paulo, Brazil. I trained and worked as a conductor at the University of São Paulo before moving into software, and today I build music software of my own: Grammar of Music, Virtual Choir and Sheet Music Stores.
Software experience
SuperSim
São Paulo fintech that offers personal loans.
Tech Lead
Present
Software Engineer
Nov 2021
Junior Software Engineer
Feb 2021 – Nov 2021
Junior Business Analyst
Jul 2020 – Feb 2021
Independent products
Music and productivity products I design, build and run end to end: Flutter apps, Next.js sites, Spring Boot services and their Kubernetes infrastructure.
Founder and developer
May 2020 – Present
- Virtual Choir Creator: more than 50,000 downloads on Google Play.
- Grammar of Music: bilingual music-theory platform with interactive tools, courses and a tutor.
- Sheet Music Stores: compares sheet music editions and prices across stores.
- Wayfinder: life-planning app published on Google Play in 2026.
Products
Grammar of Music · grammarofmusic.com
Learn, practise and discuss music theory in English or Portuguese: an encyclopedia, interactive tools, ear training, courses with spaced repetition and a tutor that explains every answer.
Next.js · TypeScript · Supabase · Tone.js · VexFlow · Claude API
Virtual Choir Creator · Google Play
2020
Each singer records their part at home over a guide track; the app synchronises the takes and renders the whole choir as a single grid video.
Flutter · Dart · Kotlin · Android Media3 · Firebase
Sheet Music Stores · sheetmusicstores.com
2021
Find a piece and compare its sheet music editions, arrangements and prices across the stores that sell it.
Next.js · React · Spring Boot · Kubernetes
Wayfinder · Google Play
2026
A life-planning companion: values, mission, vision, goals and habits across eight areas of life, revisited in daily, weekly, quarterly and annual sessions.
Flutter · Dart · Drift · Firebase · Spring Boot
Finale Scripts · GitHub
2017
Scripts that automate repetitive engraving tasks in the Finale music notation software.
FinaleScript · Lua
Music experience
FEA-USP Choir
Choir of the School of Economics, Business and Accounting of the University of São Paulo.
Conductor
Oct 2018 – 2022
- Kept the choir rehearsing online during the pandemic, with weekly vocal warm-up videos.
Comunicantus: ECA-USP Choral Laboratory
Choral teaching, research and performance laboratory of the Music Department of ECA-USP.
Content manager (scholarship holder)
Feb 2019 – 2020
- Produced content, social media and the website of the Comunicantus Chamber Choir teaching project.
- Shared conducting and vocal preparation of the USP Senior Citizens’ Choir with the student team.
Singer, Madrigal Comunicantus (basses)
2017 – 2019
Teaching assistant and conducting intern
Feb 2009 – Dec 2014
- Conducted student and community choirs at the Comunicantus Festivals of 2010 and 2014.
- Engraved the scores of the Cadernos de Repertório Coral Comunicantus.
USP Chamber Orchestra (OCAM)
Chamber orchestra of the School of Communications and Arts of the University of São Paulo, directed by Gil Jardim.
Assistant conductor
Feb 2016 – Jun 2018
- Conducted the orchestra at the Theatro Municipal de São Paulo, the Auditório Ibirapuera and the Instituto Tomie Ohtake.
- Worked on programming, press relations and programme notes.
Archivist
Feb 2015 – Jan 2016
Projeto Guri
Music education programme of the State of São Paulo for children and teenagers.
Brass teacher and conductor
Aug 2006 – Dec 2009
Education
Bachelor of Business Administration, School of Economics, Business and Accounting (FEA)
2017 – Dec 2021
University of São Paulo (USP)
Master of Music (Musicology), School of Communications and Arts (ECA)
Feb 2016 – Nov 2018
University of São Paulo (USP)
- Thesis: a critical edition of Henrique Oswald’s opera Le Fate from the autograph manuscripts, advised by Susana Cecilia Igayara-Souza.
Bachelor of Music in Conducting, School of Communications and Arts (ECA)
2008 – 2015
University of São Paulo (USP)
- Orchestral and choral conducting.
Publications
Ópera Le Fate de Henrique Oswald: edição crítica a partir dos manuscritos autógrafos
2018
Master’s thesis, School of Communications and Arts, University of São Paulo
Erros e variantes na edição de excertos da ópera Le Fate de Henrique Oswald (1852–1931)
2016
XXVI Congress of ANPPOM (Brazilian Association for Research and Graduate Studies in Music), Belo Horizonte; with Susana Cecilia Igayara-Souza
Recordings and editions
Sons sobre Tons – Criações Musicais sobre Ideias Visuais
2020
Orquestra de Câmara da ECA-USP (OCAM), Gil Jardim · Assistant conductor
Editions published by Cantabile Edições Musicais
2016
Henrique Oswald, Le Fate (excerpts); Henrique Oswald, Ave Maria; Carlos Gomes, Ave Maria; Filipe Fonseca, Eu canto
Skills
- Programming languages: Java, Kotlin, Dart, TypeScript, JavaScript, Python
- Backend and data: Spring Boot, Node.js, PostgreSQL, MongoDB, Redis
- Mobile and web: Flutter, Android, Next.js, React, Tailwind CSS
- Infrastructure: Docker, Kubernetes, GitHub Actions, AWS, Google Cloud, DigitalOcean
- Music: Orchestral and choral conducting, Arranging, Music engraving, Critical editing, Finale
Languages
Portuguese (Native) · English