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Ayaz Qureshi — Bangalore, India

Builder.
Indie Developer.

I ship products end-to-end — from architecture and system design to delightful UIs. Mobile-first, but increasingly building for web, AI, and automation. Currently working on a handful of tools and platforms in parallel.

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Things I've built

Skills & expertise

Mobile Engineering

Android SDKKotlinJavaJetpack ComposeFlutterDartKMMRoom DBWorkManagerPaging 3Navigation ComponentMaterial Design 3LifecycleProGuard/R8

Built and scaled production Android apps serving tens of millions of users. Deep in architecture, performance optimisation, and smooth UI delivery.

Architecture & Design

MVVMClean ArchitectureSOLIDTDDDagger/HiltKoinCoroutinesFlowStateFlowLiveDataDataStoreRetrofitModular Design

Owned architecture decisions end-to-end. Introduced patterns that reduced onboarding time and improved test coverage across teams.

Backend & Web

PythonFastAPINode.jsTypeScriptFirebasePostgreSQLRedisDockerAstroFly.ioVercelDigitalOceanREST APIsNginx

Ships full products end-to-end — web frontends, backend services, and cloud deployments. Comfortable owning infra as a solo builder.

AI & Automation

OpenAI APIsLangChainLLM IntegrationPrompt EngineeringRAGVector DatabasesTelegram BotsAlgo TradingWhisper APIReportlabFine-tuning

Built AI-powered bots, recommendation systems, and trading automation. Comfortable wiring LLMs into real products, not just demos.

Observability & Quality

Firebase CrashlyticsMixpanelDatadogSentryktlintdetektJaCoCoLeakCanaryEspressoMockitoUnit TestingA/B Testing

Maintained crash-free rates at scale. Introduced static analysis tooling that reduced code review time and improved reliability.

DevOps & Tooling

Jenkins CI/CDGitHub ActionsGradleGitPlay ConsoleFirebase App DistributionJiraBitbucketBranch.ioAndroid StudioCursor IDE

End-to-end release ownership — from pre-release analysis and CI/CD pipelines to zero-issue production rollouts.

Professional work

Senior Android Engineer

Fintech / Trading Nov 2022 – Present · 2+ yrs

High-scale retail trading platform — 80M users · 4M+ DAU · ~99.7% crash-free rate

  • Reduced order form load time by ~25% (480ms → 124ms) and improved overall order placement speed by 20% through targeted performance work.
  • Designed the advisory widget system — contributed to 1.95M+ user interactions and 117K orders placed in the first 6 months.
  • Developed the in-app nudges system, driving 120K additional orders by surfacing contextual prompts at the right moment.
  • Built offline-first Watchlist using Room DB and data prefetching — significantly improved perceived performance and reliability.
  • Owned architecture and delivery of a KMM module — clean layering, future-ready modularisation.
  • Delivered features end-to-end: pre-release analysis, A/B testing, and zero-issue production rollouts under tight deadlines.
  • Interviewed and evaluated candidates across all levels, contributing to team growth.
KotlinJetpack ComposeKMMRoom DBDagger/HiltCoroutinesCrashlyticsMixpanelA/B Testing

Senior Android Engineer

Mobility / Super-App Oct 2021 – Nov 2022 · 1 yr

Multi-service consumer super-app — Operated across Southeast Asia · 1M+ transactions at launch

  • Implemented a train ticket booking system — handled 1M+ transactions in the first month with zero downtime or critical issues.
  • Introduced modular use-case architecture in MVVM, reducing onboarding time for new developers by ~30%.
  • Built and shipped a transaction logs system from scratch, reducing support tickets related to payment issues by ~20%.
  • Improved code quality via ktlint, detekt, and static analysis — reduced review time by ~25% and improved test coverage.
  • Delivered multiple cross-platform POCs (Flutter + React Native), accelerating architectural decisions.
KotlinMVVMClean ArchitecturektlintdetektFlutterReact NativeCI/CD

Android Engineer

EV / Hardware + App May 2021 – Oct 2021 · 6 mos

Consumer EV scooter companion app — Shipped on Play Store · zero-glitch launch

  • Developed and published the scooter companion app within weeks — zero glitches at launch.
  • Implemented smooth animations to showcase scooter features in an engaging onboarding experience.
  • Conducted code reviews, enforced coding standards, and introduced quality tooling (detekt, ktlint, JaCoCo).
KotlinMVVMCI/CDAndroid StudiodetektJaCoCo

Android Engineer

Enterprise / Client Delivery Sep 2019 – May 2021 · ~2 yrs

Client-facing Android product delivery — Multiple clients · B2C mobility apps

  • Built, enhanced, and maintained high-impact Android applications across mobility and enterprise clients.
  • Translated product requirements into well-scoped features — consistent on-time delivery of user-focused solutions.
AndroidKotlinJavaMVVMREST APIsPlay Store

Featured projects

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NIFTY Options Trading Botin progress

AI + Automation

Algorithmic trading bot for NIFTY options with backtesting. Paper trading dev done, not yet validated.

PythonDigitalOcean
Tez Billinglive

Consumer Apps

Invoice generator for freelancers and small businesses. Phase 1 live on tezbilling.com.

WebFirebase