Open to opportunities

Swantan Barua

@swantanbarua

Message

I build production iOS apps with offline sync, payments, release engineering, and crash-free performance.

India

Message

What I'm looking for

I'm looking to ship production iOS features end to end, especially in teams that value offline-first sync, payments, release engineering, performance, and reliable post-launch ownership.

I've shipped production iOS apps for Zapium (formerly FieldCircle), Finoit Technologies, Relentless VC's Marvix AI, and healthcare platforms including CARE Health Insurance and Manipal Hospitals. My work spans field operations, fintech, clinical workflows, pharmacy inventory, and appointment booking.

At Zapium, I proposed and led a modular navigation rebuild, defined module boundaries, and migrated screens incrementally with no release regressions. I also built workflow automation, dynamic forms, and checklist modules used daily by field technicians, while resolving high-volume production crashes to keep crash-free sessions above 99%.

I've owned iOS delivery end to end, from architecture through App Store release. As the sole iOS engineer for Blockpower Civil Action, I delivered the app in Swift and UIKit and integrated Stripe with idempotency keys to safely retry ambiguous payment failures without double-charging.

I'm strongest in Swift, SwiftUI, UIKit, offline-first sync, and the native foundations cross-platform teams rely on. For Marvix AI, I built offline dictation sync for clinicians, shipped Live Activities and Dynamic Island support, and migrated the codebase to MVVM with testable view models.

Experience

Work history, roles, and key accomplishments

Senior Software Engineer (iOS)

Zapium

Nov 2024 - Aug 2026 (1 year 9 months)

Led a modular navigation rebuild of the FieldCircle app, defining module boundaries and migrating screens incrementally. Built workflow automation, dynamic forms, and checklist modules, and triaged production crashes to maintain crash-free sessions above 99%.

Swift SwiftUI UIKit Combine MVVM Crash Reporting

iOS Developer (Freelance)

Finoit Technologies

Mar 2024 - Nov 2024 (8 months)

Delivered the Blockpower Civil Action app end to end in Swift and UIKit as sole iOS engineer, from architecture through App Store release. Integrated Stripe with client-generated idempotency keys to ensure safe retries on ambiguous network failures.

Swift UIKit Stripe REST APIs

Software Engineer (iOS)

Relentless VC

Nov 2023 - Oct 2024 (11 months)

Built offline-first dictation sync for clinicians, with local store as source of truth and queued writes reconciled online. Shipped Live Activities and Dynamic Island integration, and migrated the codebase to MVVM.

Swift SwiftUI Combine Offline First Activities Dynamic Island MVVM

iOS Engineer

MedifyNexus

Jul 2023 - Nov 2023 (4 months)

Built pharmacy inventory tracking, dynamic order screens, and automated invoice generation for Medify (India) and Medikal (Philippines) platforms, replacing a manual billing process.

Swift UIKit REST APIs JSON

iOS Developer

Visioapps Pvt Ltd

Nov 2022 - Jun 2023 (7 months)

Built SwiftUI components with voice-command accessibility for Uber and South Indian Bank voice-driven apps, integrating Apple Sign-In, analytics, and Louie SDK crash logging.

SwiftUI Accessibility Analytics Crash Logs

Software Engineer

Mantra Labs

Aug 2021 - Nov 2022 (1 year 3 months)

Shipped features for CARE Health Insurance, Manipal Hospitals, and Connect2Clinic, including English and Hindi localisation and REST integrations behind appointment booking.

Swift UIKit REST APIs