Siddharth Jaswal

Hi, I'm @siddharthjaswal,

|

who builds at scale

with Kotlin + Compose + AI Tooling

Android PlatformMobile Infrastructuresiddharthjaswal
10+Years experience
10M+Users impacted
57%Cold-start reduction
15+Engineers onboarded

Experience

End-to-end ownership across discoveryarchitecturedeliveryadoption, collaborating directly with product and engineering.

Android Platform Architecture

Middleware design, multi-module monolith splits, shared SDK libraries, clean architecture at scale.

Performance Engineering

Cold-start optimization, ANR prevention, memory profiling, build time reduction, startup sequencers.

CI/CD & Release Engineering

Jenkins, Fastlane, automated quality gates, staged rollouts, zero-downtime release infrastructure.

Developer Experience

AI-assisted PR review, code generation pipelines, Claude/Cursor/Gemini tooling adopted by 15+ engineers.

Enterprise Client Delivery

Custom flows for Meesho, Uber, BigBasket, Flipkart — from PRDs to full-stack delivery.

Reliability & Security

99%+ crash-free migrations, SSL pinning, R8 hardening, biometric auth, staged rollout safeguards.

  • Architected Android middleware integrating GraphQL and REST microservices, improving API response times 40% at 10M+ user scale.
  • Built CI/CD and release infrastructure with Jenkins and Fastlane — moving release cycles from weeks to days with zero critical production issues.
  • Led modularization of a 7-year monolith into 15+ Gradle modules, cutting worst-case build times from 8–10 min (with OOM) to ~4 min.
  • Designed a config-driven startup sequencer using a DAG + Kotlin coroutines, reducing cold start from 803ms to 340ms.
  • Redesigned ecommerce return-pickup quality flows after field observation — cutting task time from ~3 min to under 40s, doubling rider throughput.
  • Collaborated with enterprise clients (Meesho, Uber, BigBasket, Flipkart) to define and deliver custom delivery and pickup flows.
  • Rolled out AI-assisted dev tooling (Claude, Cursor, Gemini) — reducing development cycles ~40% across 15+ engineers.
  • Drove zero-regression migrations: Java/MVP → Kotlin/MVVM, XML → Jetpack Compose, SQLite → Room; maintained 99%+ crash-free rates.
  • Shipped travel-planning features from Figma to production on two-week release cadences using Kotlin MVVM.
  • Reduced APK size 30% and resolved critical memory issues through profiling and targeted optimization.
  • Built a full-stack mobile product: native Android, Node.js, MongoDB, REST APIs with authentication.
  • Improved data retrieval by 50%; MVP contributed directly to the company securing seed funding.
  • Built DiveLog, an offline-first Android app on SQLite sync for unreliable network conditions.
  • Delivered certification reporting systems for international marine agencies (Bureau Veritas, Lloyd's Register).
  • Built Android apps integrated with Arduino-based IoT hardware.
  • Selected for Intel's Innovate for Digital India Challenge incubation program.

Selected Initiatives

Shadowfax

Mobile Middleware & API Platform

Designed the middleware abstraction layer for Android teams integrating with Shadowfax microservices. Improved payload efficiency across GraphQL and REST.

40% API response-time improvement at large scale.

Shadowfax

Android CI/CD & Quality Engineering

Built shared platform tooling adopted by all engineers: Jenkins and Fastlane pipelines, release automation, quality gates, and rollout safeguards.

Release cycles from weeks to days, zero critical production issues.

Shadowfax

AI-Enhanced Developer Experience

Rolled out AI-assisted PR review, code generation, and documentation workflows using Claude, Cursor, and Gemini.

Adopted by 15+ engineers; ~40% reduction in development cycles.

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Skills

Soft Skills

Systems ThinkingEnd-to-End OwnershipTechnical LeadershipMentorshipBias for ActionEngineering StandardsStakeholder CollaborationDealing with Ambiguity

Tech Stack

ANDROID

KotlinJavaAndroid SDKJetpack ComposeCoroutines / FlowHiltWorkManagerMaterial Design 3

ARCHITECTURE

Clean ArchitectureMVVMMVIMulti-moduleShared library designOffline-firstKotlin Multiplatform

CI/CD & TOOLING

JenkinsGitHub ActionsFastlaneGradle optimizationQuality gatesStaged rollouts

TESTING

JUnitMockitoEspressoRobolectricMaestroTDD / BDDSnapshot testing

APIs & INFRA

GraphQLRESTFirebase Cloud MessagingWebSocketsMicroservicesBigQuerySQL

PERFORMANCE

Android ProfilerMacrobenchmarkPerfettoLeakCanaryCrashlyticsNew RelicSentry

AI DEV TOOLING

ClaudeCursorGeminiChatGPTPR automationCode generationPrompt engineering

SECURITY

SSL pinningR8 / ProGuardBiometric authEncryptionMulti-market hardening

What colleagues say

Siddharth is one of the most gifted engineers I have worked with. His grasp over mobile app development is not just extremely sound from a technical perspective but his design sense and a remarkable ability to put himself in the user's shoes helps him excel where a lot of android engineers of his experience level can't.

D

Dipesh Mittal

CTO @ DrDroid (YC W23) · Managed Siddharth directly

If there's one thing I learned working with Siddharth, it's that speed and stability don't have to be trade-offs. He has an engineer's discipline paired with a builder's urgency, and that combination is hard to find.

B

Burhan ud din Drabu

Senior Fullstack Engineer, Ex-Shadowfax · Worked on the same team

Proactive, Smart & Dedicated. We worked together across multiple problem statements at Shadowfax and each and every time he has delivered more than what was expected. He has a very intrinsic desire to build delightful designs & experiences.

M

Mohijeet Das

Design @ PhonePe | IITG Alumnus · Worked on the same team

Recognition

NSE Listed2024

Shadowfax NSE IPO

Part of the core engineering team through Shadowfax's public listing on the National Stock Exchange of India — nearly 7 years scaling the platform to this milestone.

Industry Award2022

CX Excellence Awards 2022

Named contributor to Shadowfax's Best UI/UX Design Award in Logistics — recognised by the design lead for product & tech collaboration on user-centric flows.

Education

University of Pune

Bachelor of Engineering, Computer Engineering

Pune, India

2011 – 2015

Certifications

  • Full Stack (MEAN) Web Development Specialization
  • Multiplatform Mobile App Development
  • AngularJS, Node.js, HTML/CSS/JavaScript
  • Hong Kong University of Science and Technology

Let's talk

I build Android platforms at scale. If you have a hard infrastructure problem or a senior engineering role — let's talk.

© 2026 Siddharth JaswalBengaluru, India
Siddharth Jaswal