Johan S.

Key Skills

Software

Other

Top Subject Matter

Coding/debugging and API integration (LLM/AI coding evaluation-adjacent)

AI-assisted coding evaluation concepts

production debugging for AI training relevance

Top Data Types

Text

Top Task Types

Prompt + Response Writing (SFT)

Freelancer Overview

Freelance Web Developer & Bug Fix Specialist (technical troubleshooting with evaluation-style code validation). Brings 6+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Other. Education includes Vocational High School Diploma, Vocational High School (SMK) (2016). AI-training focus includes data types such as Computer Code and Programming and labeling workflows including Evaluation, Rating, and Prompt + Response Writing (SFT).

Labeling Experience

Web Developer & Platform Owner — WebCuan (AI coding evaluation-adjacent troubleshooting and structured solution development)

OtherPrompt + Response Writing (SFT)

Built and maintained a full-stack PHP reward platform and used daily LLM/AI usage patterns (prompt crafting and evaluation) as part of the development workflow. Applied systematic analysis of complex technical problems and delivered structured solutions, aligning with evaluating AI-generated outputs for coding tasks. The role also included integrating multiple third-party APIs and debugging production issues that would support AI training/evaluation data quality checks. • Developed a GPT/get-paid-to platform supporting AI-related workflows • Used prompt crafting and evaluated AI-generated responses in development • Debugged complex production issues affecting application logic and API behavior • Integrated and validated third-party APIs to ensure reliable system outputs

2021 - Present

Freelance Web Developer & Bug Fix Specialist (technical troubleshooting with evaluation-style code validation)

Other

Provided software troubleshooting and code evaluation for production PHP/JavaScript platforms, which closely mirrors assessing correctness, logic, and data flow in code-based AI tasks. Diagnosed API failures and technical errors by identifying root causes and validating fixes in a real-world deployment workflow. Produced clear written explanations to clients to communicate error causes and remediation steps. • Debugged PHP, MySQL, JavaScript, and API errors in production environments • Assessed correctness and clarity of code behavior after fixes • Performed evaluation-like checks on third-party API integration outcomes • Translated debugging findings into structured explanations for non-technical users

2021 - Present

Education

Work History