BACKGROUND / TECHNICAL PRACTICE

Across the stack.
Through the evidence.

Engineering products is a combination of architecture, implementation, operations and evidence. My work spans full-stack business systems, Python/AI pipelines and independent quantitative research.

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01 / PROFESSIONAL EXPERIENCE

Work behind
the interface.

Roles and responsibilities below are described in my professional résumé. The linked engineering projects offer separate implementation evidence; they do not independently verify employment, client attribution or commercial outcomes.

FULL-STACK & AI SYSTEMS

Jagat Sejahtera Abadi

Full-Stack Developer & AI Systems Engineer · Résumé-reported role

Built and maintained web applications for property, commerce, education and services. Worked with data-backed workflows, integrations, AI-assisted customer intake and Linux/Docker deployments.

LLM EVALUATION & QUALITY

Outlier AI

AI Data Trainer & Prompt Evaluator · Résumé-reported role

Evaluated generated text for instruction adherence, Indonesian language quality, formatting and hallucination issues. Experience also includes prompt robustness, structured-output constraints and safety-oriented review.

This is an experience description, not an endorsement or independent employment verification by Outlier.

INDEPENDENT RESEARCH & DEVELOPMENT

Software & Quant Research

Independent Engineering Projects

Developing deterministic backtests, market-data analysis, experimental evaluation pipelines, and Python AI workflows. Work products are represented as open-source demonstrations or clearly labeled private case studies.

02 / ENGINEERING TOOLKIT

The tools matter.
The work matters more.

03 / SCOPE & TRANSPARENCY

Professional proof
without inflated claims.

Public repositories demonstrate code and architecture; live sites demonstrate visible products; private projects are summarized without shipping confidential artifacts. I do not claim independently verified client outcomes, enterprise certifications or live-investment returns that the sources cannot support.

LET'S WORK TOGETHER

Have a technical
challenge?

Web apps, AI workflows, custom Python and quantitative research tools.

Send a project brief ↗