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Informally taught angklung as an assistant to Professor Lee Ching-huei
(李婧慧). Classes taught in Mandarin.
| Gadung Kasturi, California, USA
| 2007 - present |
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Performed with the newly-formed Gadung Kasturi music ensemble.
I assist with transcription and teaching, in addition to performing on
gangsa, gender rambat, trompong, and kendang.
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| Google, California, USA
| 2007 - 2017 |
Software engineer at Google, initially in the datacenter group and later in
geo. Some projects:
- Hardware Ops, 2007 - 2010
- Touchpad: This was an application for handheld and later laptops for
datacenter repair work. I was author of the initial versions, and later tech
lead for ongoing maintenance. It was used for all machine repairs in Google
datacenters from 2007 until sometime around 2009.
- R3: This was a machine management system. It would accept suspected
broken machines and coordinate automatic testing, reinstallation, automatic
diagnosis, scheduling for manual repairs, etc. Since it delegated the actual
work to other systems, it was basically just a big distributed state machine,
with facilities to define workflows with complicated control flow and local
customization, along with global structured logging, monitoring, manual
control for exceptions, and the like.
I was the main designer and author of most of the original code, along
with tech lead for two or three other developers. I later became a
consultant for the software engineering team that took over its maintenance.
It was responsible for the repairs workflow for almost all Google servers in
all datacenters from 2009 until at least 2015.
- GroundTruth, 2010--2017: This group created the map data used by Google
maps. This includes:
- Work on Atlas, the tool used to edit maps. Some examples:
- Implemented live QC, which was a kind of real time lint for map data.
This was a realtime version of the offline batch-oriented autochecks.
- Implemented some autochecks, which were heuristics to find map
problems. For example, analyze road networks for components with an
entrance but no exit, or inconsistent road priorities.
- Added support for multiple turn restrictions, e.g. bicycles can't
pass at any time, cars can't pass during a certain time range.
- Added support for restriction groups, so a special event can
close off entire sections.
- Implemented QC scoring, a system to prioritize QC work by ranking
map problems by severity.
- Implemented issue search, which converted issues (map metadata used to
track work) to a dremel database. It did a lot of complicated ad-hoc
aggregation and analysis, and was used both directly by ops and as a foundation
for further analysis and dashboards. This was used to track and distribute
work, and also to make decisions about employee performance and pay.
- Design consultant for contractor projects in Seattle and Hyderabad. This
was mostly database design for Django apps.
- Lots of bug fixing, backend migrations, and other features.
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Projects
I used to have a lot of them, but for the last 8 years or so my main
project has been Karya, which is something between a music notation program,
a music sequencer, a music language, and an IDE for that language. Details
at
http://ofb.net/~elaforge/karya/doc/overview.md.html
Skills
Natural languages: English, Indonesian, Balinese, Mandarin.
Technologies: recent and significant experience in Haskell, Java,
C++, Python. Experience with large scale data processing, such as Map Reduce
and Flume, Dremel, and of course SQL.
Additional Interests
Natural languages and writing systems, programming languages, music notation,
sound synthesis, Carnatic and Balinese music.
References available on request.
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