TAFTantowi Alif Feryansyah
Resume
Tantowi Alif Feryansyah
Full-Stack JavaScript & Golang Developer

Hi, I am Tantowi Alif Feryansyah

Backend Developer • Full-Stack Engineer

I am a Full-stack JavaScript & Golang Developer with deep experience in building, maintaining, and scaling web applications and high-throughput microservices using Go (Golang), Node.js, NestJS, Express.js, React, and Next.js.

From US-based e-commerce architectures (Shoppias Ecommerce LLC) to high-concurrency fintech platforms (Orderfaz, APIbayar) and enterprise corporate portals (Garudafood), I specialize in designing resilient RESTful APIs, optimizing database schemas (PostgreSQL, MongoDB, SQL Server), and orchestrating critical third-party integrations (payment gateways, WhatsApp API, Meta Ads).

Dedicated to clean, efficient code, high system availability, and cross-functional team collaboration to deliver impactful digital solutions.

Go (Golang) & NestJS APIsNext.js & React FrontendPostgreSQL & MongoDB TuningWhatsApp API & Payment Gateways
Explore ProjectsWork Experience
01 // Capability Infrastructure

Technology & Tooling

Here’s what I typically work with across systems, layers, and runtimes.

Backend Frameworks

High Performance

Server-side architectures, microservices & scalable RESTful APIs

Go (Golang)Nest.jsNode.jsExpress.jsFeathers.jsDirectusREST APIs
Microservices & RESTSub-50ms Latency

Frontend & Mobile

Responsive UI

Modern, high-performance web applications & cross-platform mobile apps

Next.js (App Router)React.jsReact Native (iOS & Android)Tailwind CSSTypeScriptBootstrap
SSR & JamstackFluid UX

Databases & ORM

Data Integrity

Relational schemas, document stores, data migrations & query tuning

PostgreSQLMongoDBSQL ServerSequelize ORMDatabase IndexingData Backup / Restore
ACID TransactionsQuery Tuning

APIs & Third-Party Services

Ecosystem Bridge

Real-time integrations, automated messaging & external services

WAHA (WhatsApp API)Payment GatewaysMeta Ads APIWebhooksAuthenticationRESTful Endpoints
Webhook ResiliencySecure Auth

DevOps & Tooling

Deployment Ready

Container virtualization, version control, and system administration

DockerLinux (Ubuntu/Debian)Git / GitHubHasura GraphQLPostmanCI/CD Automation
ContainerizationReliable Deployments

Core Languages

Type-Safe & Scalable

Primary programming languages for server logic and interactive clients

Go (Golang)TypeScriptJavaScript (ES6+)SQLHTML5 / Modern CSS
Clean CodeMaintainable Architecture
02 // Career Track

Work Experience

Interactive career breakdown across enterprise backends, research, and platform systems.

Shoppias Ecommerce LLCCurrent / Latest

Full Stack & Mobile Engineer • E-commerce & REST APIs (Wyoming, USA)

Feb 2026 – Present

Full Stack & Mobile Application Engineer

  • Engineered and maintained cross-platform mobile applications using <strong>React Native (Android & iOS)</strong>, ensuring smooth native performance and fluid UI interactions.
  • Architected and implemented scalable, high-throughput RESTful APIs using <strong>NestJS</strong> with clean modular design patterns and automated input validation.
  • Built and optimized user-facing web applications using <strong>Next.js</strong>, significantly reducing initial load times and boosting search engine indexability.
  • Integrated business-critical third-party services including secure authentication workflows, <strong>payment gateways</strong>, and analytics tracking.
  • Collaborated closely with UI/UX designers and product managers to deliver functional, high-converting feature implementations on schedule.
  • Continuously monitored application metrics, identifying performance bottlenecks and proactively resolving production bugs to ensure 99.9% service uptime.
Nest.jsNext.jsReact NativeTypeScriptRESTful APIsPayment GatewaysDocker
03 // Selected Builds

Featured Projects

Engineered for network resilience, distributed state & mission-critical workflows.

Nest.js & Next.js
Shoppias LLC (USA)

Holistor — E-Commerce & Retail Platform

Scalable full-stack e-commerce system engineered for Shoppias Ecommerce LLC (USA). Designed and implemented high-concurrency NestJS RESTful APIs, modern Next.js client storefront, third-party payment gateway checkouts, and real-time order tracking.

Nest.jsNext.jsReact NativeTypeScriptPostgreSQLPayment Gateways
Go (Golang) & PostgreSQL
High Concurrency

Orderfaz — Checkout & Transaction Backend

High-performance backend services engineered for Orderfaz at PT. Lincah Cipta Harapan. Built with Go (Golang) and optimized PostgreSQL database architecture to support resilient transaction processing, rapid checkout, and seamless API integrations.

Go (Golang)PostgreSQLRESTful APIsDockerMicroservices
Go (Golang) & MongoDB
Fintech Platform

APIbayar — Payment Gateway & Merchant Portal

Payment aggregation platform combining a robust Go (Golang) microservice handling financial ledger data in MongoDB, paired with a responsive Next.js administrative and merchant portal for real-time transaction monitoring.

Go (Golang)MongoDBNext.jsTypeScriptREST APIs
Node.js & Express.js
Enterprise Messaging

PDAM Tirta Sembada — WhatsApp Automated Messaging

Automated utility messaging infrastructure deployed with a self-hosted WAHA server and Node.js / Express.js middleware. Facilitates automated customer billing notifications, media handling, and real-time webhook event processing.

Node.jsExpress.jsWAHAWhatsApp APIWebhooksDocker
Node.js & Next.js
Garudafood Vendor

BarangKulakan & Ultahku (Garudafood)

Enterprise backend and frontend solutions engineered for Garudafood through PT. SERU. Powered by Node.js, Next.js, and PostgreSQL for robust inventory distribution, retail partner management, and corporate loyalty portals.

Node.jsNext.jsExpress.jsPostgreSQLSequelize
Go (Golang) & PostgreSQL
Data Pipeline

Melangkah — Real-Time Meta Ads Data Engine

Automated marketing data aggregation engine built with Go (Golang) and PostgreSQL. Integrates with the Meta Ads API to extract, normalize, and deliver real-time ad performance analytics for strategic campaign optimization.

Go (Golang)PostgreSQLMeta Ads APIData Pipelines
Engineering Approach
“Correctness, security, and long-term stability matter more than quick temporary fixes.”

Looking to build resilient backend services, optimize data pipelines, or scale web applications? Let's discuss your next project.

Get in Touch
04 // Contact

Get In Touch

Have a question or want to work together? Feel free to drop me a message. I'd love to hear from you!

Contact Information

Fill up the form and I'll get back to you as soon as possible.

Emailtantowialif15@gmail.com
Phone / WhatsApp+62 859-1069-75018
LocationPadalarang, West Bandung • Open to Remote Work
Connect with me