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Bossini Yan Fedro

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Software Engineer | AI/ML Dev
North Sumatra, Indonesia

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Résumé

Jobs verified_user 0% verified
  • iMerit Technology
    Freelance AI Image Evaluation
    iMerit Technology
    Sep 2025 - Nov 2025 (3 months)
    Evaluated multimodal AI model outputs using OpenAI's internal evaluation tools, reviewing and scoring image edit results for instruction accuracy, visual quality, and semantic alignment. Identified model behavior patterns and failure cases across manipulation quality, object consistency, and prompt adherence. Validated end-to-end image editing pipelines to ensure correct transformations and reliable prompt execution. Delivered structured evaluation feedback used to refine model performance and reduce error rates. Collaborated with project managers and quality leads to maintain consistent standards across complex multimodal task.
  • P
    Freelance Software Engineer
    PT. Toga Cipta Flora
    Dec 2024 - May 2025 (6 months)
    Led the development of an internal ERP system from client requirements to final delivery. Developed backend microservice using Python (Django REST). Built the frontend using Vue 3, Vite, and TypeScript, integrating with backend APIs. Built and optimized MySQL databases to support operational and reporting workflows. Managed AWS cloud infrastructure across VPC networking, IAM, EC2 (Ubuntu servers), S3, CloudFront, SES, security controls, and SSL/HTTPS configuration. Handled server operations and deployments, including Docker services, Nginx setup, Secrets Manager, SSH access, CloudWatch monitoring, and system hardening. Performed penetration testing, implemented security hardening, and provided maintenance support.
  • PT. Bank Rakyat Indonesia
    Full Stack Engineer
    PT. Bank Rakyat Indonesia
    Aug 2024 - Sep 2025 (1 year 2 months)
    Developed backend systems using Go, Python, Node.js across service and microservice architectures, handling refactoring and migration workstreams. Enhanced and maintained web applications using PHP (CodeIgniter 3, Slim) and Bootstrap. Developed React and Next.js frontends from Figma designs with backend API integration and performed penetration testing for embedding into product team applications. Designed and optimized databases across SQL Server, Hasura GraphQL, HBase, and MySQL to support backend services and applications. Built and maintained CI/CD pipelines using Git, Bitbucket, Jenkins, Docker, and Kubernetes for automated builds and deployments. Supported infrastructure operations using Elasticsearch, Kafka, Redis, Azure, and Kibana.
Education verified_user 0% verified
  • Diponegoro University
    Bachelor of Computer Science
    Diponegoro University
    Sep 2020 - Apr 2024 (3 years 8 months)
    GPA: 3.62/4.00
  • P
    Primavera P6 Professional Fundamental
  • C
    Course Completion Java Programming
  • D
    Data Analysis: Full Stack Intensive Bootcamp
  • T
    Top 5% Professional Data Engineer Track
  • L
    Leadership Program Sustainability
Projects (professional or personal) verified_user 0% verified
  • A
    AI Backend RAG Document Retrieval System
    Sep 2025 - Oct 2025 (2 months)
    Built backend components for a RAG based document Q&A system using FastAPI, LangChain, ChromaDB, and LLM providers (OpenAI/Ollama). Implemented a document ingestion pipeline with vector embeddings, semantic retrieval, and quality evaluation using RAGAS. Containerized backend services with Docker, set up GitHub Actions for automated deployments, and delivered production ready APIs with CORS and structured logging.
  • C
    Credit Card Segmentation
    Built a customer segmentation model using K-Means to classify credit card users based on behavioral patterns. Performed exploratory and statistical analysis to validate clusters and improve segmentation accuracy.
  • A
    AI Emotional Speech Generation
    Built an emotional speech generation prototype using Python with a FastSpeech2 style pipeline and HiFi-GAN vocoding concepts. Designed a full TTS workflow including text normalization, prosody planning, emotion embeddings, and waveform synthesis. Implemented a controllable prototype using macOS TTS (say + afconvert) and pyttsx3 with multiple emotional styles.