sidharth! full-stack systems & android developer

i work across the whole stack, from the AOSP framework and linux kernels up to the native apps and UI people use, with FastAPI backends and scripts in between.

aosp framework: yaap & cipherOS maintainer · device bring-up, including the xiaomi pad 8 from scratch · understanding of the build system · HALs
low level: syd, my pixel 7 and xiaomi pad 8 kernel · a 20-year-old c++ engine ported to arm64 · hands on experience with MediaTek BROM exploits · contributions to low-level repos
linux: nixOS daily, fully declarative · kernel and rom build tooling
app development: breathe for android (kotlin, compose) and iOS (swift, swiftui)
ui: material 3 and swiftui clients, plus this whole website, no frameworks
fastapi: the breatheOSS api: live CPCB and US EPA AQI from our own sensors
scripting: bash and python: rom and kernel build scripts, syd for nixpkgs

sidharthify@nixos ~ $ hyfetch

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sidharthify@nixos

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OS: NixOS 26.11 (Zokor) x86_64

Kernel: Linux 7.2.8-cachyos

Display (VX2758A-2K): 2560x1440 in 27", 185 Hz [External]

DE: KDE Plasma 6.7.5

Font: Inter (10pt) [Qt], Inter Medium (10pt) [GTK2/3/4]

CPU: 12th Gen Intel(R) Core(TM) i5-12400F (12) @ 4.40 GHz

GPU: AMD Radeon RX 9060 XT [Discrete]

Memory: 8.85 GiB / 31.17 GiB (28%)

Disk (/): 604.46 GiB / 915.32 GiB (66%) - ext4

there is no dark side to the moon, really. matter of fact, it's all dark.

sidharthify@nixos ~ $ cat about.md

i like low level systems and embedded programming. i tinker with android (aosp) and linux. i run nixOS on my main PC. i occasionally ship roms, write bash scripts and live in the UNIX terminal.

sidharthify@nixos ~ $ ls ~/projects

breatheOSS
lead dev & maintainer. an open-source, community-driven air quality network for Jammu & Kashmir and Ladakh: our own AirGradient sensors in jammu, srinagar and rajouri backed by satellite models, a FastAPI backend computing indian (CPCB) and US EPA AQI, android, iOS and web clients, a discord bot, an open data repository and a governance charter. breatheoss.app
breatheForecaster
seven day PM2.5 / PM10 / AQI forecaster for the breatheOSS network, pure standard-library python. forecasts are published nightly before the days happen and graded in public afterwards
yaap (yet another aosp project)
maintainer / contributor
cipherOS
maintainer
device trees & ports
nothing phone 2a/2a+, realme 8i / narzo 50 4g, realme 9 5g SE, pixel 7 / 7 pro — maintainer, co-lead, contributor, tester
xiaomi pad 8 bring-up
aosp device bring-up from scratch: device tree, vendor and kernel, with syd as its kernel
syd (kernel)
my custom android kernel for the pixel 7 (ported to linux 6.12) and the xiaomi pad 8
lineageos contributions
rewriting legacy hidl hardware abstraction layers to aidl, building kernels
nixos + homelab
a modded minecraft server run as a systemd service, with a discord bot that starts it on request and stops it by in-game majority vote, ipv6 ddns, a playit tunnel and daily backups. sunshine for game streaming
cwr engine port (arma cwa)
ported a 20-year-old game engine to android arm64 with a custom opengl es 3.2 backend
syd (nixos)
lightweight command-line tool for nixOS. unrelated to the syd kernel, just the same name
stillAlive-C
the portal ending credits recreated in pure c for the terminal: typed-out text, ascii art and audio in sync, scaled to any window at 4:3
ladsave
save editor in c for yakuza: like a dragon on linux. reverses the xor + crc32 save format and splices bytes in place so the rest of the save stays untouched
bcstm2wav
batch converts nintendo 3ds .bcstm audio to .wav, written in c

sidharthify@nixos ~ $ ls ~/skills

c & modern c++
engine rendering backends, kernelspace c, aosp c++, custom math libraries
python and bash
file manipulation and some scripting
graphics programming & glsl
opengl es 3.2, custom vertex/fragment shaders, rewriting fixed-function pipelines
git
general knowledge and familiarity
linux
general commandline knowledge
aosp
device trees, HALs (aidl/hidl), soong, android.bp, overlays, fastboot, adb
nix/nixOS
flakes, the distro and the nix language itself
css/html/javascript
enough to make this website, and contributions to yaaprom.org. no frameworks
kotlin
android frameworks

sidharthify@nixos ~ $

type help to look around. try ls, projects, cat about.md, cd blog.

things i love

never fade away — johnny-silverhand-cyberpunk.jpg

shine on you crazy diamond — shine_on_you_crazy_diamond.jpg

terry a. davis — Terry_A._Davis_(cropped).jpg