Flutter, Swift and Kotlin apps from architecture to store approval, including regulated fintech: wallets, banking, SoftPOS tap to pay, eKYC.
MPB Plus passed bank security review · PayNow 50K+ users, and 100+ app on productionNabraj KhadkaFull-stack · AI · Mobile
I ship the app,and what’s behind it.
Fintech, EdTech|ERPs, health platforms, IoT solutions, ecommerce, ride‑hailing apps. Subscriptions, monetisation, backend architecture, AI tooling/automation. Flutter, Swift, Kotlin, React Native, React / Next.js, Python, Laravel.
People using my apps500,000+
Apps in production50+
Engineers led & mentored50+
Years building8+
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- PostbaseMulti-platform publishing with AI post creation. Console (generate with AI and schedule), REST API, and MCP server for AI agents , post to LinkedIn, X, Instagram, Facebook, Reddit and Telegram from one connection.↗
- BroomiemacOS disk cleaner. Shipped solo: filesystem scanning, RevenueCat IAP, notarised.↗
- CommitKitHabit tracker. Built solo: Apple Health sync, home widgets, subscriptions, releases.↗
- Couple TaleRelationship timeline. Built solo: map-pinned memories, widgets and subscriptions.↗
- TearLogMood journal. Built solo: logging, charts, calendar history and the billing flow.↗
- MPB PlusRetail banking app (iOS|Android). Took the project from scratch to production and mentored the team: account opening with document verification, transfers, card controls, QR payments, and hardening that passed bank security review.↗
- PayNowDigital wallet. Led architecture and delivery: secure transactions, biometric auth, eKYC, 20+ integrations.↗
- N-CashDigital wallet. Led technical direction; cut tech debt, raised PR quality, wrote the native bridges.↗
- WinkTaxiRide-hailing app. Sole delivery lead on the revival: Google Maps, live trip sync, background location.↗
- BikeFixup PartnerMarketplace merchant app. Led development and releases for a 100K-install marketplace.↗
- Giga School ERPSchool ERP. Led multi-tenant SaaS delivery across 100+ tenants and designed the release pipeline.↗
- N-TouchSmart home automation. Led the revamp that cut delivery time: BLE and MQTT, Google Home and Alexa.↗
- Banque Misr SoftPOSPayment terminal on Android. Native SoftPOS: merchants accept card taps on their phone with NFC, processing sales, pre-auth holds, voids and refunds. Jetpack Compose UI, Kotlin, biometric auth, batch settlement.↗
- Salute PersonalePatient records. Built the app end to end: OIDC single sign-on, clinical records, document archive, store billing.↗
- Sahara CareElder care. Full stack from idea to release: Admin, APIs, scheduling, evv api implementation, mobile apps, caregiver workflows, HIPAA handling.↗
- AirzaiIoT fragrance diffuser. Owned the native (SwiftUI) iOS release , feature work and production support.↗
- Dog HomeskoolDog-training platform. Built on Appwrite and Firebase, with RevenueCat billing.↗
- BalloonTeen finance app. Sole engineer end to end: feature-first Clean Architecture, CI-gated test suite.
LinkedIn · Upwork
“Saying Nabraj is saving my life is not an exaggeration. He’s an outstanding Flutter developer and an even better human. … Nabraj stepped in, took control of the project, and completely turned things around.”
“Nabraj is personable, smart and an overall great person to work with! He’s fast to respond, communicates clearly and has a strong work ethic.”
“He seamlessly integrated into the team, hitting the ground running. … Nabraj stands out for his professionalism, positive attitude, meticulous attention to detail, and ability to excel in a remote team environment.”
“Nabraj is an outstanding Flutter and Mobile app developer who brought tremendous value to our fintech company.”
“He is the one, who does the wonderful…”
“Nabraj consistently delivered high-quality work efficiently, demonstrating strong technical skills in both iOS and Android development.”
Plans · Rates
| Hire | What you get | Rate |
|---|---|---|
| For busy founders | Your tech guy, who builds pretty much everything: app, backend, AI and the store release. Unlimited requests, one at a time · Private Slack, WhatsApp or Telegram channel · Code is 100% yours | $1,500/ month |
| For teams | I join you and your team full time and work as an in-house hire. Full time in your Slack, repo and standups · Architecture, code review and releases · Building features alongside your engineers | $3,000/ month |
| Not sure yet? | Hire me by the hour for anything: full-stack, AI or mobile development. Full-stack web and APIs · AI features and agents · Flutter, Swift and Kotlin apps | $30/ hour |
30 minutes on Google Meet, in your timezone. Prefer email? nabrajkhadka43@gmail.com
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Founders · Teams · Agencies
One senior engineer who owns the product end to end, from the model call or the payment flow to the store listing. Remote from Kathmandu (GMT+5:45). Top Rated on Upwork, 100% Job Success.
LLM features that ship: AI generation inside the product, agents and MCP servers, automation pipelines, and the API and UI around them.
Postbase: AI post creation, REST API, MCP server for agentsWeb apps and APIs end to end: React and Next.js front ends, Python (FastAPI) and Laravel backends, PostgreSQL, Docker, CI/CD and deployment.
Sahara Care: admin, APIs, scheduling and mobile apps, idea to releaseHave an exciting project idea? Let’s discuss and build it!
nabrajkhadka43@gmail.comOr 30 minutes on Google Meet, in your timezone
nabrajkhadka.com.np