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● Statement of work · 2018 → present

Native iOS for money that moves.

I'm Vital Sowath, an iOS developer for banking and payments. 7+ years of native iOS, with security and stability treated as part of every release.

Phnom Penh, Cambodia · iOS Developer at Vattanac Bank

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01 · Account holder

Building the apps people trust with their money.

I'm an iOS developer with 7+ years of experience building native mobile products, with a strong focus on banking, payments, merchant tools, and SDK development.

My work centers on secure architecture, smooth app behavior, and release quality that holds up for real users at scale.

Alongside iOS, I built Vattanac Bank's voice announcement service, which speaks money-in and money-out alerts in Khmer, English and Chinese.

  • ✓ Verified

    Secure by default

    Security and encryption are part of every feature, from the first estimate to the release.

  • ✓ Verified

    Reliability first

    Production crash rate below 0.5% on the banking apps I work on.

  • ✓ Verified

    Payments & QR

    Payment flows, merchant enablement, and KHQR transactions, including the SDK merchants integrate with.

  • ✓ Verified

    Full SDLC, cross-functional

    Turning business requirements into estimates, plans, and release-ready work with product, QA, backend, and security teams.

02 · Statement of experience

Seven years, three employers, one focus.

Each role is listed as an entry on the statement, newest first.

  1. Jul 2023 – Present

    TXN-2023-07

    Vattanac Bank

    iOS Developer · Banking · Phnom Penh, Cambodia

    • Built and maintained a payment gateway iOS SDK to simplify and secure merchant integration
    • Shipped a merchant app that allows Vattanac Bank account holders to accept QR code payments
    • Delivered features, fixes, and security improvements in the main Vattanac Bank iOS app
    • Helped maintain production crash rates below 0.5%
    • Worked on banking apps, merchant tools, payment SDKs, reliability, and security-focused delivery

    Voice AI · Machine learning

    • Trained a dedicated text-to-speech voice for each speaker and language: Khmer, English and Chinese, each in a male and a female voice
    • Built the secure voice announcement service that speaks money-in and money-out alerts for Vattanac Bank
    • Delivered it end to end, from voice training to the speech service, an internal request dashboard and its hosting
    • Swift
    • iOS SDK
    • Payment Gateway
    • QR Payments
    • Security
    • CocoaPods
    • SPM
    • Voice AI
    • Machine Learning
    • Text-to-Speech
    Active

  2. Nov 2021 – Apr 2023

    TXN-2021-11

    Chip Mong Bank

    Associate Software Engineer, iOS Developer · Banking · Phnom Penh, Cambodia

    • Built native banking features across iOS and Android
    • Worked with Swift, Objective-C, and Kotlin
    • Translated business requirements into technical plans, estimates, and release-ready tasks
    • Implemented security and encryption features
    • Raised technical and performance risks early during delivery
    • Swift
    • Objective-C
    • Kotlin
    • Security
    • Encryption
    • SDLC
    Settled

  3. Dec 2018 – Sep 2021

    TXN-2018-12

    Codingate Technology Co., Ltd.

    Mobile Application Developer (Native iOS and Android) · Software House · Phnom Penh, Cambodia

    • Grew from Junior iOS Developer into broader native mobile delivery across iOS and Android
    • Handled full life-cycle development, troubleshooting, and reusable library work for client apps
    • Mentored junior developers
    • Contributed to CI/CD, code review, and knowledge-sharing practices
    • Swift
    • Objective-C
    • Kotlin
    • CI/CD
    • Mentoring
    • Code Review
    Settled
Opening balance · Dec 2018Closing balance · 7+ yrs native iOS

03 · Itemised projects

What I've built at Vattanac Bank.

Two App Store apps, the SDK merchants integrate with, and a voice AI service built alongside the iOS role.

04 · Credentials

Education

  1. Master of Science (M.Sc.), AI & Data Mining

    Royal University Phnom Penh

    2022 – 2024

  2. Bachelor's Degree, Computer Science

    Royal University Phnom Penh

    2013 – 2018

  3. Bachelor of Arts, English for Business and Communication

    Paññāsāstra University of Cambodia (PUC)

    2013

05 · Authorisation

Recommendation

Reference · May 2023

Vital is a genuinely nice loving human being, a great person and colleague to us, a hardworking and talented resource, he never says no to any tasks being assigned or asked to help and always looking for helping his teammate as much as he could, it does not matter what time was it he was always there to help.

Watching him walk away from my very own team is painful as a teammate, but also happy for him to grow and get higher in his career and can only be jealous of the next team he will be working with.

Portrait of Pherum Un

Pherum Un

Lead Development | Digital Banking | System Integration | Software Development | Implementation Engineer

Verified

06 · Payee details

Let's settle the next one together.

Open to iOS product roles in banking, fintech, and trust-heavy mobile teams. Reach me by email, Telegram, LinkedIn or phone.