SENIOR iOS ENGINEER · TECHNICAL LEAD

I build
iOS apps
people keep.

I’m Jahirul. I’ve spent 9+ years turning complex mobile products into clear, dependable experiences — from Daraz and Beeda to two iPhone apps I built and shipped myself.

SWIFTSWIFTUIMOBILE ARCHITECTURETEAM LEADERSHIP
JAHIRUL / iOS01 — 04
SWIFTUI · SWIFTDATA · VISIONFrom code
to someone's
home screen.
Expense Packet iPhone app showing organized reimbursement claims
EXPENSE PACKET
INDEPENDENT iOS APP
EXPLORE APP ↗

Daraz · Alibaba GroupHigh-scale commerce

BeedaMulti-service mobile platform

Expense Packet + Talk TrialIndependent App Store products

PRODUCT DOMAINS
  • Ride sharing
  • Food delivery
  • E-commerce
  • Telemedicine
  • Utilities
  • Mega apps
  • Sports

01 / iOS WORK IN THE WILD

Built for real life.

Commerce at scale, multi-service platforms, and apps I shipped from the first line of Swift.

FEATURED EXPERIENCE
Daraz↗

Alibaba Group

iOS · E-COMMERCE

SENIOR SOFTWARE ENGINEER, iOS · MAR 2022 – APR 2023

Engineering for
everyday commerce.

Contributed to the Daraz shopping app as part of its iOS engineering team, developing and optimizing features for a complex commerce product.

  • Shopping feature development and optimization
  • Data-informed product decisions
  • System design improvements for simpler feature delivery
FEATURED PLATFORM
Beeda↗

Multi-service commerce

CONSUMER APP + MERCHANT APP

iOS ENGINEERING · MODULAR ARCHITECTURE

One platform.
Many everyday needs.

Contributed to Beeda and Beeda Merchant, connecting consumer services with the tools businesses need to manage orders and daily operations.

  • Application modularization across a multi-service platform
  • Commerce, orders, and merchant workflows
  • Mobile and backend collaboration on XMPP messaging

Independently built.

Two native iOS products, from idea to the App Store.

Expense Packet groups totals by currencyExpense Packet claims list with receipt review status
Expense Packet

RECEIPT CAPTURE / ON-DEVICE OCR

Expense Packet

A pile of receipts becomes one organized reimbursement packet. Built around privacy, clear review, and the realities of travelling across currencies.

SwiftUISwiftDataVisionStoreKit 2
Talk Trial word-synced playbackTalk Trial live coaching with filler-word feedback
Talk Trial

SPEECH PRACTICE / LIVE COACHING

Talk Trial

A private space to practice the conversations that matter. Record, listen, and improve with transcripts, gentle live coaching, and meaningful follow-up questions.

SwiftUIAVFoundationSpeechFoundation Models

PUBLISHED WORK WITH TEAMS

More iOS products.

Sports and learning experiences available on the App Store.

Robi MySports App Store image showing upcoming matchesRobi MySports App Store image showing live scores
Robi MySports

SPORTS / LIVE SCORES / STREAMING

Robi MySports

A sports destination for cricket, football, tennis, and more, with live scores, upcoming matches, and watch experiences.

iOS appSportsLive content
IQRA App Store image showing learning categoriesIQRA App Store image showing digital Quran learning content
IQRA · Digital Quran Learning

QURAN LEARNING / DIGITAL EDUCATION

IQRA

An iPhone learning platform bringing Quran study, Islamic content, and guided video learning into one experience.

iOS appEducationVideo learning

MORE PRODUCTS

Work beyond the App Store.

01 / TELEMEDICINE

Medico

A medical network where care comes together. I designed and developed the full application.

PREVIOUSLY RELEASED · NO LONGER ON THE APP STORE
02 / FOOD DELIVERY

HungryNaki

Bangladesh’s first premium online food delivery service. I redesigned the application experience, contributing to a 20% increase in orders.

PRODUCT REDESIGN · USER EXPERIENCE

02 / THE ENGINEER BEHIND THE WORK

Hands-on engineer.
Thoughtful leader.

I’ve built iOS features with large teams and shipped my own apps from first commit to App Store release.

My career began in game development in 2017. It taught me to care about responsiveness and performance, not just whether a feature works.

At Daraz, I worked on a commerce app used across a complex product organization. At Beeda, I helped shape modular mobile systems and supported other engineers. Expense Packet and Talk Trial let me own the full product: architecture, native interactions, testing, and release.

Today I lead mobile engineers at Nasir Syntax Solution while staying close to the Swift code and the people using what we build.

EDUCATIONBSc in Software Engineering

Daffodil International University · 2017

03 / THE JOURNEY

Built over time.

From game engines to leading mobile teams.
A career spent making things work better.

Full resume
2024 — PRESENT

Lead Software Engineer

Nasir Syntax Solution Ltd.

CURRENT

Leading a cross-platform mobile team while staying hands-on with iOS architecture and development. Building ride-sharing and e-commerce experiences, from live messaging and fare negotiation to product discovery and checkout.

Mobile leadershipSystem designCI/CD
2023 — 2024

Lead Engineer, iOS

Easital Technologies Ltd.

Supported 8 engineers, helped 2 team members progress into senior leadership roles, and set technical roadmaps. Guided application modularization and collaborated with backend engineers on XMPP messaging.

MentoringModular architectureXMPP
2022 — 2023

Senior Software Engineer, iOS

Daraz · Alibaba Group

Developed and optimized features for the Daraz shopping application. Contributed to data-informed product decisions and system design improvements that simplified feature delivery.

iOS developmentE-commerceSystem design
2019 — 2022

Software Engineer, iOS

Live Technologies

Built real-time messaging, a custom WebRTC video-calling SDK, and indoor navigation. Introduced caching that reduced API costs by 30%, with work across telemedicine, education, sports, and food delivery.

WebRTCReal-time systemsCaching
2017 — 2019

Game Developer

Pechas Game Studios

Developed games for iOS and Android, including Goli Cricket for Facebook Instant Games. Built a native game engine for a lightweight application, reducing app size by 50% against its Unity-based implementation.

Game engines3D experiencesMobile performance

04 / WHAT’S NEXT?

DHAKA, BANGLADESH · CONNECTING WORLDWIDE

Let’s build
something good.↗

Senior & Lead iOS opportunities.
Interesting products. Thoughtful teams.

FEATURED EXPERIENCE / DARAZ

DARAZ · ALIBABA GROUP

Commerce, in practice.

Senior Software Engineer, iOS
March 2022 – April 2023

The product

Daraz’s shopping app brings product discovery, promotions, and purchasing into one mobile experience. It was an opportunity to work within an established commerce platform.

My role

As part of the iOS engineering team, I developed and optimized shopping features, contributed to data-informed product decisions, and worked on system design improvements.

Contribution areas

View Daraz on the App Store ↗
PUBLISHED iOS WORK / SPORTS

ROBI MYSPORTS

Sport, wherever you are.

A mobile destination for live sports and match updates.

The product

Robi MySports brings cricket, football, tennis, and other sports into one iOS app. The App Store presentation highlights live scores, match schedules, and watch experiences.

My contribution

I worked on the iOS application as part of my sports product experience.

View on the App Store ↗
PUBLISHED iOS WORK / LEARNING

IQRA · DIGITAL QURAN LEARNING

Learning, made accessible.

Quran learning content and guided sessions on iPhone.

The product

IQRA combines digital Islamic content with group and on-demand video learning. Its App Store listing describes Quran study, Tafsir, Hadith, prayer learning, and other educational material.

My contribution

I worked on the iOS application as part of my education product experience.

View on the App Store ↗
INSIDE THE BUILD / 01

INDEPENDENT iOS PRODUCT

Expense Packet.

From a stack of receipts to a claim that’s ready to share.

Swift 6SwiftUISwiftDataVision OCRPDFKitStoreKit 2Swift Testing

The problem

Receipts arrive as paper, images, and PDFs. Currency differences, ambiguous dates, and missing details turn a simple claim into manual work.

What I built

A native capture-to-export workflow: import documents, review extracted fields, organize a claim, and generate a numbered PDF with a matching CSV.

Engineering decisions

Explore on the App Store ↗
INSIDE THE BUILD / 02

INDEPENDENT iOS PRODUCT

Talk Trial.

Practice the moment before the moment matters.

SwiftUIAVFoundationSpeechCombineSwift ChartsFoundation ModelsStoreKit 2

The problem

Knowing what to say and being able to say it clearly are different skills. Useful practice needs realistic prompts, a way to listen back, and specific feedback.

What I built

A guided speaking practice app with recorded takes, word-timed transcripts, speech analysis, live coaching, and a playback studio.

Engineering decisions

Explore on the App Store ↗