arifin widyatmoko

Frontend Web / Mobile Engineer

Lampung, Indonesia 6+ yrs exp 90 · Outstanding

About

Frontend & Mobile Engineer with 3+ years of experience building production-grade fintech applications. Specialized in developing cross-border and local transfer flows, complex multi-step transaction forms, and scalable frontend architectures using React.js, Next.js, React Native, and TypeScript. Experienced in contributing to both mobile applications and company web platforms in production environments. Strong focus on high-accuracy financial workflows, secure data handling, and maintainable component systems.

Skills & Expertise (17)

React Native Advanced

8.5/10

Years Exp

React.js Advanced

8.5/10

Years Exp

Typescript Advanced

8.0/10

Years Exp

JavaScript Advanced

8.0/10

Years Exp

Next.js Intermediate

7.5/10

Years Exp

Node.js Intermediate

7.5/10

Years Exp

Rest API Intermediate

7.5/10

Years Exp

Express.js Intermediate

7.0/10

Years Exp

Git Intermediate

7.0/10

Years Exp

GraphQL Intermediate

6.5/10

Years Exp

MongoDb Intermediate

6.0/10

Years Exp

Docker Intermediate

6.0/10

Years Exp

Postgresql Intermediate

6.0/10

Years Exp

JWT Intermediate

6.0/10

Years Exp

Redis Intermediate

5.5/10

Years Exp

BCrypt Intermediate

5.5/10

Years Exp

Azure DevOps Intermediate

5.0/10

Years Exp

Work Experience

Software Developer

PT. Indokoala Remittance

Nov 2022 - Mar 2026

Development of cross-border and local transfer features for iOS and Android applications using React Native. Built complex multi-step transaction flows with dynamic validation and draft state persistence. Contributed to the development and enhancement of company web platforms, including Transfez and itsJack, ensuring responsive and scalable frontend implementation. Designed strongly-typed and scalable frontend architecture using TypeScript for financial workflows. Integrated secure transaction APIs and authentication systems. Implemented currency formatting and high-precision transaction data handling. Managed mobile application release lifecycle for App Store and Google Play. Collaborated with backend and product teams to ensure transaction integrity, performance, and reliability.

Production Supervisor

PT. Indofood Sukses Makmur CBP

Sep 2019 - May 2022

Managed operational planning and execution in a large-scale manufacturing environment. Led scheduling and coordination across production teams. Ensured project preparation and execution aligned with operational standards.