ANSAR
FADILLAH
I build web apps end to end — backend in Node.js (Express) and Go (Chi, Fiber, Gin), frontend in React and Vite, and debug production issues through logs and request traces.
// Experience
- Owned end-to-end architecture, data consistency, and production reliability of core customer membership, policy underwriting, and automated claim-resolution microservices built in Go and Node.js (TypeScript/Express)
- Decomposed complex claim-triage and document workflows by migrating from a rate-limited third-party SaaS to an in-house microservice, eliminating 100% of vendor licensing costs and cutting customer document turnaround time by ~55%
- Redesigned internal service-to-service API contracts from HTTP/JSON to gRPC and Protocol Buffers, reducing serialization overhead and cutting p95 inter-service latency by ~45% across high-volume operational flows
- Tuned PostgreSQL/MySQL query execution plans and engineered a Redis cache-aside layer with targeted TTL invalidation for customer apps and internal ops consoles, cutting primary DB read load by ~60% (p95 latency < 80ms)
- Served as on-call reliability owner for backend services, instrumenting structured logging, APM metrics, and distributed tracing across Dockerized workloads to prevent incidents and reduce mean time to resolution (MTTR)
- Accelerated feature delivery and test coverage by integrating AI-augmented engineering workflows (agentic code generation, automated test scaffolding, and AI-assisted PR review) while enforcing strict API and security guardrails
- Engineered multi-service RESTful backends and internal operational consoles for client web and mobile platforms using Go (Fiber, Gin) and PostgreSQL, enforcing Clean Architecture boundaries
- Designed normalized PostgreSQL schemas, composite indexes, and versioned database migrations to guarantee transactional data consistency across staging and production environments
- Built a centralized authentication and authorization middleware layer using stateless JWTs (access/refresh token rotation) and granular Role-Based Access Control (RBAC) across multi-tenant client and agent endpoints
- Standardized local and staging environments using multi-stage Docker builds and Docker Compose, cutting developer onboarding setup time to under 15 minutes and eliminating cross-team configuration drift
- Designed the backend API gateway and relational persistence layer for Vistr (AI-Powered Travel & Itinerary Recommendation Engine), connecting mobile travel clients to Python ML inference services to generate personalized multi-day travel itineraries
- Provisioned auto-scaling serverless containers on GCP Cloud Run backed by Cloud SQL and automated GitHub Actions CI/CD pipelines for zero-downtime releases
- Architected Simpas for Institut Teknologi Kalimantan (ITK) — a centralized submission, triage, and multi-stage review platform with a deterministic approval state machine, multi-role reviewer consoles, and asynchronous document upload and status-tracking REST APIs (Node.js, Express, MySQL, React)
- Delivered a municipal field-survey and market price aggregation portal for the Trade Department of Balikpapan City, designing relational MySQL schemas and role-based reporting APIs to digitize regional commodity tracking and automate statistical report generation (Node.js, Laravel, MySQL, React)
- Mentored 100+ undergraduate engineers in algorithms, data structures, and clean code practices through pairing and code reviews
- Designed course materials and guided students through core programming foundations and problem-solving techniques
// Latest Projects
A selection of projects I've contributed to as a software engineer across backend and frontend.
A native macOS notch companion that simplifies my daily workflow — quick access to every essential shortcut, from music & meetings to PRs & AI agents.
Web3 implementation for make KTP and Surat Kepemilikan Tanah in indonesia to Non Fungible Token (NFT) for more secure and transparency data . This project we created based on what happend in indonesia.
Platform to learn basic programing like an python,javascript and SQL . the feature provide an sandbox code editor with realtime terminal, it works with using child process from node then stream it to client side with socket.io then for the UI using the xterm js. Uses blockchain as storage to keep PDF MD5 hashes, ensuring document originality and integrity.
Vistr is capstone project for bangkit, Vistr is tourism app for make an plane based what they want using a Machine learing to give an recomendation to user based their personality choice
// GitHub Activity
My activity over the last year — tracking commits, code reviews, and pull requests across repositories.
// Education
Kalimantan Institute of Technology
Bachelor of Informatics Engineering
// Get In Touch