$ booting execross_os
mounting /home/ang ok
starting nginx, pm2, api-gateway ok
ready.
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Asking Ang

Asking Ang

Full-Stack Developer: APIs, Automation & Infrastructure

I run Execross, a one-person shop building bots, scrapers, media APIs and web apps for clients worldwide, including my own downloader tools on top of my public EXAPI platform. No CS degree, no bootcamp. Just years of debugging production systems, deploying my own servers, and writing up what I learn.

View experience Get in touch →
CODING SINCE2015
FREELANCE / AGENCY6+ yrs
GITHUB REPOS12
ENGINEERING ARTICLES20
SYSTEM UPTIME0 days
zsh - profile.request
$ curl -s https://ang.execross.com/api/profile | jq
infra.log
live
~/experience

Founder & Solo Developer, Execross

Everything below is run, deployed, and kept alive by one person. On call to myself since 2018.

2018 to Present Surabaya, Indonesia Open to remote, worldwide

APIs & Backend

operational
  • Designed, built, and maintain EXAPI: a public REST API for downloading/processing media from Instagram, TikTok, Smule, Spotify, X, Facebook, Threads and CocoFun, documented with live inline testing and sub-100ms global response times.
  • Rebuilt the core media pipeline from a headless-Chrome automation setup to a leaner API-based architecture after three months chasing instability. Wrote it up as a full engineering case study.
  • Built a message-queue based dispatch system to stop bot traffic from dropping messages during high-volume spikes, replacing a naive send-and-hope approach.

Servers & Infrastructure

operational
  • Manage and tune VPS infrastructure across four providers (Vultr, ConoHa, Contabo, Linode): Nginx reverse proxies, wildcard SSL via Certbot, Cloudflare edge caching that doesn't break live APIs, and swap configuration to stop budget builds dying from memory pressure.
  • Run production services on Flask + PM2 with systemd fallback and scheduled restarts to keep memory leaks in check; write Bash automation for deployment and recurring jobs, including a cron-managed content-moderation scanner with secrets pulled safely from .env.
  • Handle day-to-day incident response solo: downtime, memory/CPU exhaustion, and SSL/DNS issues across live, paying-user systems.

Web & Frontend

operational
  • Delivered client web projects (landing pages, marketplace sites, personal sites, company profiles, admin/catalog dashboards) built on React, Next.js and Bootstrap, with SEO details most agencies skip.
  • Diagnose and fix indexing/crawling issues using Google Search Console, the Google Indexing API and Bing Webmaster Tools; monitor Core Web Vitals to keep pages fast and search-friendly.
  • Built and self-fund three public downloader tools (TikTok, Smule, Starmaker), each with its own analytics dashboard, monetized via ads and reader donations.
  • Currently building ValVoix, a community forum layered on the SmuleVault user base, bootstrapped and shipped incrementally as budget allows.

Bots & Automation

operational
  • Developed a full LINE automation product line: selfbots, group/square bots, public-facing chatbots, customer-service bots, group-protection systems, and Flex message design.
~/growth

SEO & organic growth

Beyond development, technical SEO applied to execross.com, verified in Google Search Console.

0
STARTING POINT
clicks / 28 days (May 20)
0
PEAK GROWTH
clicks / 28 days (Jul 19)
0
GROWTH MULTIPLE
in under 2 months
2K-3K
CURRENT BASELINE
daily organic visitors
execross.com · Google Search Console, organic clicks · May-Jul
what was implemented
Keyword research & on-page optimization Meta titles/descriptions tuned for CTR Open Graph & Twitter Card tags Canonical URL strategy JSON-LD (FAQ, breadcrumbs, rich snippets) XML sitemap & robots.txt llms.txt for AI crawler visibility Core Web Vitals (LCP, CLS, INP) Domain migration, zero traffic loss GSC index-coverage monitoring
~/stack

Core skills

The toolkit, grouped the way it actually gets used, not a tag cloud.

languages
pythoncore
javascriptcore
html / csscore
sqlcore
web & frontend
reactui
next.jsssr/ssg
tanstack-routerui
tailwind / bootstrapstyling
infrastructure
linux vpsvultr/conoha/contabo/linode
nginxreverse-proxy
cloudflareedge
certbot / pm2 / systemd / cronops
apis & bots
rest api designdocs
line bot apiwebhooks
ig / tiktok / spotify / x / fbintegrations
automation & scraping
web scrapingcore
headless browser automationcore
bot dispatch / queue designcore
seo & analytics
json-ld / faq schemaseo
search console / indexing apimonitoring
pagespeed / core web vitalsmonitoring
~/education
High School Diploma (SMA). Self-taught past this point, through building, breaking, and fixing production systems since 2015.
~/ecosystem

Everything else Execross runs

Four properties, one person keeping them online.

service

Execross

Client-facing agency site for web dev, APIs, bots and infrastructure for hire.

execross.com product

EXAPI Docs

Public media API platform with live inline testing and sub-100ms global response.

docs.execross.com store

Execross Store

Web development storefront with templates, builds and services, ready to order.

store.execross.com