TRACKING NO. AF-2011–2026 STATUS: IN TRANSIT

Aditya Firmansyah

Senior Software Engineer — Full-Stack Developer

SURAKARTA, ID WORLDWIDE

Thirteen-plus years shipping web, backend, and mobile software — from enterprise logistics platforms moving real packages to the microservices that route them.

Download CV Get in touch

Manifest — Contents Declaration

About

Software engineer with 13+ years designing and building scalable web, backend, and mobile applications. Experienced across the full development lifecycle with React, Next.js, Node.js, NestJS, TypeScript, and WordPress. Proven track record shipping enterprise logistics platforms, microservices, and cloud-native applications deployed on Kubernetes. As CTO of GOSG Consulting, now building a platform that brings together website creation, e-commerce, and SEO tooling, with AI agents integrated throughout to help users get more done. Strong advocate for clean architecture, code quality, and collaborative engineering.

13+Years Shipping Code
6Portals & Apps Built at pickupp
2Languages — ID Native / EN Professional

Cargo Manifest — Technical Payload

Skills

Languages

JavaScript (ES6+)TypeScriptHTML5CSS3

Frontend

ReactNext.jsReact Native

Backend

Node.jsNestJSREST APIsgRPCMicroservices

CMS

WordPressShopify

Platform & AI

Website BuildersE-commerce SystemsSEO ToolingAI Agent Integration

Infrastructure

KubernetesGitCI/CD

Databases

MySQLPostgreSQL

Practices

API IntegrationCode ReviewAgile DevelopmentSoftware Architecture

Cargo Log — Personal Freight

Projects

Solo Build — Full-Stack Rust

GainForge Gamified Fitness RPG

LIVE

GainForge turns real workouts into RPG quests — users earn XP, level up a character, and grow four stats (STR, END, AGI, FLX) by completing daily strength, cardio, flexibility, and endurance sessions. Built solo end-to-end: product design, schema, API, frontend, and production deployment.

  • Full Rust stack front-to-back — Leptos (WASM) frontend and an Axum backend share a single DTO crate, keeping types identical across client and server.
  • Designed the quest/XP/leveling system and a 4-stat character model, plus an admin panel for managing training programs, exercises, and weekly schedules.
  • Shipped and self-hosted on a VPS with Docker and PostgreSQL — 15 schema migrations, 100+ commits, with iterative mobile-UX polish (drawer navigation, responsive schedule grid).
RustLeptos (WASM)AxumPostgreSQLDockerSelf-hosted VPS
Visit GainForge →

Solo Build — Full-Stack JavaScript

Upwork Proposal Generator AI Cover Letter Tool

LIVE

Freelancers on Upwork build a profile (skills, bio, experience), paste a job listing URL, and get a tailored, editable cover letter back — turning “found a job I want” into “submitted a proposal that gets a reply” in the time it takes to read the posting.

  • Backend scrapes the pasted Upwork listing (Express + cheerio) with SSRF hardening — validates and blocks requests to localhost, private/reserved IP ranges, and cloud metadata endpoints before fetching a user-submitted URL.
  • Job summary and user profile feed a prompt builder that calls an LLM gateway (Claude Haiku) to draft the cover letter, which the user can edit before saving.
  • Full auth/profile/letter-history schema in PostgreSQL (users, profiles, projects, cover_letters with draft/saved status) behind JWT auth; self-hosted on a VPS via git-push deploy (bare repo + post-receive hook + systemd + nginx).
ReactViteTailwindNode.jsExpressPostgreSQLSelf-hosted VPS
Visit Upwork Proposal Generator →

Shipment History — Tracking Log

Experience

  1. Aug 2024 – Jul 2026 In Transit

    CTO — GOSG Consulting

    • Leads product and architecture for a platform spanning website creation tools, an e-commerce system, and SEO tooling.
    • Integrates AI agents into the platform to help users build sites, run their stores, and handle SEO with less manual effort.
    • Makes technical decisions and defines coding standards.
    • Mentors other developers and helps turn business ideas into technical plans.
    • Estimates timelines and technical risks, and manages server infrastructure.
    Website BuilderE-commerceSEO ToolsAI Agents
  2. Apr 2019 – Jul 2024 Delivered

    Software Engineer — pickupp, Singapore

    • Developed and maintained enterprise logistics platforms using React, Next.js, Node.js, and NestJS.
    • Built scalable backend microservices in TypeScript communicating through gRPC.
    • Integrated UPS shipping APIs to expand merchant delivery options and pricing capabilities.
    • Contributed to Merchant Portal, Admin Portal, Fleet Portal, Landing Page, User App, and Delivery Agent App.
    • Participated in code reviews, improving maintainability and engineering quality.
    • Deployed and maintained services in Kubernetes environments to support scalable production workloads.
    ReactNext.jsNode.jsNestJSTypeScriptJavaScriptKubernetesgRPC
  3. May 2018 – Apr 2019 Delivered

    Full-Stack Developer — WebDesignHamburg.net

    • Developed and maintained custom web applications for international clients.
    • Implemented frontend and backend features based on business requirements.
    • Delivered responsive and maintainable web solutions.
  4. Sep 2013 – May 2018 Delivered

    Senior Web Application Developer — Incuvius

    • Developed custom web applications and resolved complex technical issues.
    • Maintained existing applications while implementing new functionality.
    • Collaborated with clients to deliver reliable software solutions.
  5. 2011 – Sep 2013 Delivered

    Web Developer — Incuvius

    • Built custom website features and enhancements.
    • Debugged, optimized, and maintained production websites.
    • Supported frontend and backend development across multiple client projects.

Quality Control — Certified Seals

Certifications & Languages

JavaScriptCourse
CSSFundamentals
jQueryCourse
IndonesianNative
EnglishProfessional Working Proficiency

Consignee Details — Final Destination

Let’s ship something together.

Email [email protected] Phone +62 811-201-7817
Location Surakarta, Central Java, Indonesia
LinkedIn /in/aditya-firmansyah-21940845 GitHub /adityafirmansyah
Download CV Email Me