Junior Backend Developer · Software Engineer
Building quiet,powerful systems& reliable architectures.
I'm Alfa Rizi — focused on reliable APIs, distributed services (Spring Boot), asynchronous RAG pipelines (LangChain), and practical AI integrations.
Projects
01 — 10
Capabilities
Backend & Systems
- Java 17 / Quarkus 3.15 LTS (Modular Monolith)
- Spring Boot 3.2 & Spring Cloud Gateway
- Double-Entry Escrow Accounting
- PostgreSQL & Redis Cache
- Docker & CI/CD Pipelines
AI & Vector Search
- RAG Architecture
- LangChain & ChromaDB
- Google Gemini 2.0 Flash
- PyMuPDF Ingestion
- sentence-transformers
Frontend & Motion
- React 19 & Next.js
- Tailwind CSS & TypeScript
- GSAP 3 + ScrollTrigger
- Three.js WebGL Shaders
- Lenis Smooth Scrolling
Engineering Principles
- RESTful API Architecture
- JWT & Role-Based Access Control (RBAC)
- Firebase Auth (Google Sign-In)
- PostgreSQL ACID Triggers
- Offline-First State Persistence
- Clean Code & SOLID Design
About
Education & Training
Associate Degree in Informatics Management (D3) · Universitas Nasional PASIM
GPA 3.6 / 4.0 — Bandung, Indonesia
PUB Intensive Technical Scholarship · Pemberdayaan Umat Berkelanjutan
Logic & C · Data Structures & Relational Databases · Web (HTML/CSS/JS) · Java Development · Git & GitHub · Advanced Java Development · React Development
Experience
Lead Intern — IT & Business Operations · PT Resik Cemerlang
Directed a 5-person intern team in live IT operations. Managed SLA ticket handling, weekly laptop maintenance (security patching, antivirus), and medical device specification quality control. Delivered weekly operational reports to senior management.
Organizations
Academic Staff · HIMAMI (Informatics Student Association)
Coordinated academic development programs, peer-to-peer coding tutorials, and tech workshops for software engineering students.
Master of Ceremony (MC) — Orientation · Student Community Organization
Hosted official orientation ceremonies for incoming members, coordinating event rundowns and stage dynamics.
Certifications
- 2026Python for Everybody Specialization — University of Michigan
- 2025Programming for Data Science — HarvardX
- 2025Certified Entry-Level Python Programmer — HarvardX
- 2026Introduction to Cloud Computing — IBM
- 2026English Communication Skill — Arizona State University
- 2025Cybersecurity Fundamentals — RIT
- 2025Introduction to Cybersecurity — edX