Looks like you have JavaScript disabled. For the full Twine experience, you will need to re-enable it.

Full-stack developer and AI automation practitioner with hands-on experience building and maintaining web applications, business platforms, APIs, databases, and production workflows. Skilled in Python-based data processing, computer-vision/video pipelines, AI-assisted automation, debugging, validation, deployment, and quality control. Experienced in LLM model evaluation and annotation, including strict instruction/constraint adherence and detailed AI data annotation using CVAT and supervised workflows. Strong focus on linguistic consistency, edge cases, and remote collaboration to ensure reliable, high-quality outputs.…Full-stack developer and AI automation practitioner with hands-on experience building and maintaining web applications, business platforms, APIs, databases, and production workflows. Skilled in Python-based data processing, computer-vision/video pipelines, AI-assisted automation, debugging, validation, deployment, and quality control. Experienced in LLM model evaluation and annotation, including strict instruction/constraint adherence and detailed AI data annotation using CVAT and supervised workflows. Strong focus on linguistic consistency, edge cases, and remote collaboration to ensure reliable, high-quality outputs.

Edgar Erlangga

Full Stack Developer, AI Trainer, AI Evaluator, +2





Full-stack developer and AI automation practitioner with hands-on experience building and maintaining web applications, business platforms, APIs, databases, and production workflows. Skilled in Python-based data processing, computer-vision/video pipelines, AI-assisted automation, debugging, validation, deployment, and quality control. Experienced in LLM model evaluation and annotation, including strict instruction/constraint adherence and detailed AI data annotation using CVAT and supervised workflows. Strong focus on linguistic consistency, edge cases, and remote collaboration to ensure reliable, high-quality outputs.…Full-stack developer and AI automation practitioner with hands-on experience building and maintaining web applications, business platforms, APIs, databases, and production workflows. Skilled in Python-based data processing, computer-vision/video pipelines, AI-assisted automation, debugging, validation, deployment, and quality control. Experienced in LLM model evaluation and annotation, including strict instruction/constraint adherence and detailed AI data annotation using CVAT and supervised workflows. Strong focus on linguistic consistency, edge cases, and remote collaboration to ensure reliable, high-quality outputs.

Available to hire

Full-stack developer and AI automation practitioner with hands-on experience building and maintaining web applications, business platforms, APIs, databases, and production workflows. Skilled in Python-based data processing, computer-vision/video pipelines, AI-assisted automation, debugging, validation, deployment, and quality control.

Experienced in LLM model evaluation and annotation, including strict instruction/constraint adherence and detailed AI data annotation using CVAT and supervised workflows. Strong focus on linguistic consistency, edge cases, and remote collaboration to ensure reliable, high-quality outputs.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Language

Indonesian

Fluent

English

Advanced

Work Experience

AI Data Annotation & Computer-Vision Practice - Independent Project

January 1, 2026 - January 1, 2026

Completed video and image annotation workflows in CVAT and supervised settings using bounding boxes, polygons, masks, segmentation, keypoints, object tracking, keyframes, and interpolation. Performed frame-level and temporal quality control including tracking drift correction, ID continuity checks, missing-object review, occlusion and off-screen handling, and edge-case documentation. Compared manual, interpolation-based, and AI-assisted workflows to improve annotation efficiency while preserving label accuracy and consistency.

Full-Stack Developer at Jagat Sejahtera Abadi LLC

January 1, 2026 - Present

Built and maintained full-stack platforms for real estate, e-commerce, education, services, and digital marketing use cases. Developed a real-estate portal connecting agents, property listings, and prospective buyers, covering frontend, backend, database, API integration, debugging, and deployment. Created an AI customer service workflow to support response handling and management of prospective real estate clients. Built the Kodekoe e-commerce and ordering platform with product catalog, cart and order flow, and administrative management. Designed the Montes Academy learning portal and contributed to the One Pro Jasa service-business platform. Managed and improved production business websites by diagnosing issues and implementing maintainable fixes across the application stack.

AI Data Trainer / Indonesian Language Expert (Project Aether) - Remote

January 1, 2026 - January 1, 2026

Evaluated and annotated LLM outputs to ensure natural Indonesian language fluency, grammatical accuracy, and strict compliance with Indonesian EYD standards. Performed rigorous constraint auditing (zero-tolerance policy) to verify model adherence to complex instructions, including negative constraints, structural limits, and formal/informal register nuance. Executed clean verbatim formatting and precise code-switching (Indonesian-English) in annotations to refine transcript and context-switching capabilities. Analyzed semantic structures and idiomatic expressions to correct literal translation bias, logic failures, and hallucinations, with attention to linguistic consistency and edge cases.