Arjun Iyer · Founder & product engineer
I build the systems behind useful experiences—from language immersion and personal agents to music platforms, media tools and connected devices.
01 / Selected work
Four products, different problems, one through line: give people useful context and a better way to act on it. Each case study separates implementation from demonstrated outcomes.
Keep real work within reach.
Direct ongoing work in your own computing environments from Android. A persistent coordinator, direct sessions, voice and actionable notifications keep you involved as work continues.
Kotlin · Compose · Node.js · SQLite · WebSockets
Practice language in the world you inhabit.
A virtual immersion partner combining conversation, speech, native-language layers, transliteration and visual context. Designed around continued practice and a person’s own interests.
Next.js · TypeScript · WebRTC · Android · Language alignment
Give human music a place to be heard.
A club for music and music lovers. Members discover music and cosign artists; artist entry combines identity, human review and funded delivery to real Members.
Next.js · PostgreSQL · Redis · HLS · Object storage
Turn interview preparation into deliberate practice.
Coding-interview practice with a database-backed problem catalogue, curricula and learner progress. An open-source edition supports configurable language-model providers.
Next.js · PostgreSQL · Provider abstraction · Progress data
The foundation / Fallible Software, Co.
Fallible Software began in 2024 with a practical idea: software should increase human ability. The person brings purpose, context and judgment; the product helps carry them into action.
Language, media and agent tools are different expressions of that direction. Production infrastructure supports the work—from persistent jobs to bounded computer control.
Explore intelligence augmentation ↗Inside the work / A visual archive
Actual interfaces and recorded product demonstrations. Open an image to inspect the detail, or follow a project to its case study or live product.
A phone interface to ongoing work, with an explicit pairing boundary.
Explore the project ↗Conversation, speech and visual context for continued language practice.
Explore the project ↗Music discovery and human endorsement, supported by media delivery infrastructure.
Explore the project ↗Coding practice with a problem catalogue, curriculum and learner progress.
Explore the project ↗
Motion feedback across a native phone app and connected display hardware.
Explore the project ↗
Remote media projects, resumable uploads and non-destructive editing recipes.
Private operating tool · recorded demonstration
A picture wallet for the images you need to retrieve quickly, with capture, annotation and local storage.
Explore the project ↗
Tempo-led media capture and editing controls, with camera and gallery inputs.
Explore the project ↗Virtue / From signal to feedback
The app makes motion visible, then lets a person calibrate, inspect and review it. These are genuine Android captures from the product’s release assets.
Explore Virtue ↗
02 / How I work
Product thinking, hands-on implementation and operations belong in the same conversation.
Design conversational, mobile and multimodal interfaces around context, useful feedback and continued control. Make voice, text and visual support fit the task.
Connect interfaces to durable state, event processing, media delivery and device boundaries. Keep retries, interruptions and uncertain outcomes visible in the system design.
Use architecture records, reproducible checks and release evidence. Treat a prototype, a live route and a customer outcome as different things—and improve through real use.
03 / Wider portfolio
Alongside the featured work: private operating tools, experimental systems and the earlier products that shaped the company.
Android and web editing clients share host-resident projects, resumable uploads and persistent processing jobs. FFmpeg-based workflows support clips, loops and music edits.
Media production · documented portfolio workMotion feedback across a mobile app and CircuitPython matrix hardware, using gravity-plane acceleration and precomputed display frames.
Explore Virtue / GoLight ↗A Codex runtime fork exploring independently steerable agents, persistent contexts, room-aware attention and reproducible coordination evaluation.
Explore Losangelex ↗A lightweight HTTP/SQLite room service with persistent messages, cursors and metadata; integration work connects room traffic to runtime attention.
Explore Hollywood ↗Coordinates bounded browser and desktop transactions with ownership, durable admission, draining and explicit handling of uncertain effects.
Operations · documented portfolio workSource-scoped production knowledge, planned jobs, qualified hosts, guarded workers and delivery evidence support original graphics work.
Creative tooling · documented portfolio workAn independent music and live-streaming presence with audience clients, scheduling, ingest, playback and media operations.
Explore PirateBae.tv ↗Event-delivery infrastructure used across product integrations, separating webhook delivery from application concerns.
Operations · documented portfolio workAI-assisted source planning and revenue research with output validation, timeout handling and restartable workflows.
Research workflows · documented portfolio workEvidence-aware role matching and application preparation using sourced résumé claims and repository provenance. Private candidate records are not published.
Research workflows · documented portfolio workA picture wallet for quick retrieval, local capture and annotation. Native clients have their own release states.
Explore Piclet ↗Tempo-led camera and gallery workflows for media capture and editing. Public route availability is separate from browser/device qualification.
Explore Bulletime ↗These entries describe preserved work, not current availability. Earlier products informed the direction and engineering of later systems; conceptual lineage does not imply shared code.
Conversation-first language practice with bilingual replies, transliteration, aligned help, roleplay and mobile lifecycle work; a substantive stage before OZZZ.
Language & communication · documented portfolio workStreaming speech interpretation, translation and transliteration, with partial-recognition stability, persistence and metered access.
Language & communication · documented portfolio workVideo understanding and language assistance, backed by extraction, queueing and workflow coordination; development also explored person-directed practice.
Knowledge & media · documented portfolio workSpotify-backed track search, musical-key mappings and recommendation exploration made track relationships easier to inspect.
Music exploration · documented portfolio workStreamed dictation into an editable Tiptap document, with partial transcripts, export, authentication and usage controls.
Expression · documented portfolio workArticle retrieval, HTML cleanup and translated views explored reading across languages.
Reading · documented portfolio workA Twitch IRC/WebSocket experiment visualized repeated words in a crowd’s conversation.
Audience interaction · documented portfolio workAn early YouTube search interface; later visual experiments remain distinct from the original search functionality.
Media exploration · documented portfolio workSaved link lists with private/public access, ownership checks and sharing explored how people collect and retrieve personal information.
Personal information · documented portfolio workAudio recording, secured upload and playback, reactions and duration-based credit metering, including M4A compatibility work for iOS.
Expression · documented portfolio workStreamed microphone capture through a Phoenix client, with explicit start/stop and disconnect behavior; no current release is asserted.
Language & communication · documented portfolio workBring-your-own-recording ingestion with speaker-labeled transcripts, summaries, quotations and timestamped topics, plus stored processing status.
Personal information · documented portfolio workNo matching projects. Try a broader term.
Curated from authorized repositories, the company-history checkpoint and résumé evidence, reviewed October 8, 2026. Infrastructure, copies and upstream forks are not counted as independent products. Read the portfolio notes →
04 / About
I’m the founder of Fallible Software, Co., where I work across product direction, interaction design, engineering and operation. My current focus is intelligence augmentation: systems that help people understand more and do more with their own judgment.
My earlier engineering work spans distributed analytics at Amazon, cellular-imaging and machine-learning platforms at nference, augmented-reality and music applications at Jeane, and autonomous-underwater-vehicle software at Hydroid. That range informs how I connect user-facing experiences to the systems underneath them.
05 / Work together
For product partnerships, engineering collaborations or roles connecting product, AI and systems—send a note about what you’re trying to build.
The established Fallible Software contact route.
Inspect public work on GitHub ↗