Tech lead and software engineer with 7+ years building production systems across mobile, backend, and AI. Led the engineering team behind a document intelligence platform trusted by 12+ Southeast Asian enterprises — 88% reduction in manual processing, 95%+ extraction accuracy, 80% lower infrastructure costs.
I'm Arief Wijaya, a software engineer and tech lead based in Jakarta, Indonesia. I've been writing production software since 2017, working across mobile development, backend systems, cloud infrastructure, and machine learning.
My career has evolved from building fullstack web and mobile apps into leading engineering teams and shipping AI-powered products. At Fintelite I work as Tech Lead — building KYC/KYB and fraud detection platforms for B2B clients, while also contributing directly to backend APIs, database design, and system architecture. One result I'm particularly proud of: reducing infrastructure costs by 80% while improving throughput.
Outside of work I build open source tools, take consulting projects, and try to write code that holds up under real production load.
OCR pipelines, LLM fine-tuning, and entity extraction for financial documents.
Cross-platform iOS & Android apps with clean architecture and BLoC state management.
REST APIs and microservices in Go, Node.js, and Python. MySQL, PostgreSQL, and Redis in production.
Mentoring engineers, setting technical direction, and shipping on schedule.
— Professional work
AI document intelligence engine that reads any financial document without templates. 95%+ extraction accuracy, 88% reduction in manual effort. Trusted by Permata Bank, CIMB Niaga, Xendit, and 12+ enterprises across Southeast Asia.
Complete KYB & KYC platform built on 4 years of Fintelite R&D. Verifies identities and businesses in <5 seconds — 99.8% AI accuracy, 50+ integrated data sources, 97.3% forensic accuracy for document fraud detection.
Personal finance app with tens of thousands of active Indonesian users — budgeting, expense tracking, and financial insights. Led mobile architecture and a team of 4 Flutter developers from the ground up.
Fan engagement platform connecting Indonesian celebrities with tens of thousands of fans. Led Flutter mobile architecture for iOS & Android — creator monetisation, live events, and exclusive content.
First super app in Timor Leste — payments, data packages, utility bills, and lifestyle services in one cross-platform app. A nationally significant product and a first-of-its-kind in the country.
Music streaming app for Timor Leste built for Telkomcel. Audio streaming, offline mode, and local artist catalogue.
— Open source
Flutter nutrition tracker app. Calorie and macronutrient logging with meal planning and progress tracking.
Flutter personal finance app. Expense tracking, budget categories, and monthly reports with clean architecture.
AG Grid server-side row model with CodeIgniter 3 — paginated, sortable data tables backed by PHP APIs.
I occasionally take on consulting projects and enjoy talking to teams working on hard problems. Based in Jakarta — open to remote collaboration and relocation for the right opportunity.
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