Two-sided products fail on refunds and disputes, not on the happy path.
-
Black is not emptiness.
It is every color combined into its strongest form.
CoreBlack®
[ Est. 2019 - Bangkok, Thailand ]
Web Development
Web Development
SaaS & Application
SaaS & Application
AI Integration
AI Integration
API & Automation
API & Automation
who we are
who we are
The person who hears your idea is the same person who writes the code.
Our small team brings developers from organizations and leading startups in Thailand. You talk to our developers directly,
so your idea becomes software that actually fits what you need.
You don't need to know the tech — just know what you want.
We're not a company
We're not a company
We're freelancers behind a lot of successful builds
Talk to us
We know what's on your mind - and you're in good hands.
Talk to us first. Happy to advise,
Big or small, we treat every job the same.
What we build
What we build
Coreblack software studio.
Web Development
Websites designed specifically for your brand. Built to stand out with a distinct look, and SEO structured from day one so your business gets found on Google.
- Landing Pages & Sites
- Web Applications
- E-commerce Builds
- CMS & Headless
- Performance Tuning
SaaS & Application
Beyond templates: SaaS products and custom apps built around your business logic, your users, and how you plan to grow.
- SaaS Products & MVPs
- Admin & Internal Tools
- Dashboards & Reporting
- Mobile Apps (iOS / Android)
- Membership & Subscriptions
AI Integration
AI moves faster than most teams can follow, but your business still needs something stable every day.
We pick, connect, and maintain it so you don't have to chase every new release.
- AI Chatbots for Web & LINE
- Document Q&A for Internal Knowledge
- LLM Integration with Existing Systems
- Automated Document Extraction & Summaries
- Specialized AI Agents
API & Automation
We wire your tools together, build the APIs, and automate the repetitive work your team shouldn't be doing by hand.
- REST & GraphQL APIs
- Third-party Integrations
- Webhooks
- CI/CD Pipelines
- Process Automation
We reply within 24 hours. No obligation.
Our
Recent
Work
A few builds we can talk about publicly - web apps, AI features, and the unglamorous internal tools that keep companies running.
Stack.
[ Frontend ]
React · Next.js · Astro · Vue
TypeScript everywhere
[ Backend ]
Node · Go · Python · PostgreSQL
Tests before handover
[ AI ]
Claude · OpenAI · RAG · Vector DB
Docs you can read
[ Frontend ]
Cloudflare · AWS · Docker · CI/CD
Deploys on every merge
[ Infra ]
Postgres · Redis · Queues · Observability
You own the code
CoreBlack is a freelance developer team. We pick boring, proven tools, write code the next developer can read, and ship on schedule.
99.9%
Average uptime
across systems we maintain
100%
Code and repo
owned by you
~48h
Typical reply time
on retainer
“They shipped in six weeks what our last vendor couldn't finish in six months. Clean code, clear updates, no chasing.”
Client, SaaS product team
“They cut our page load from 6 seconds to under 1. Conversions moved the same week.”
Client, e-commerce platform
“They added AI search to our platform without breaking anything. Honest about what LLMs can and can't do.”
Client, internal tools team
price & plans
price & plans
Clear monthly rates. No hidden hours, no surprise invoices mid-sprint.
Monthly retainer - ongoing development, fixes, and support. One-off projects are quoted separately.
Monthly
Project
Starter
from $1,200
/month (retainer)
For a marketing site or landing page that needs to load fast and rank well.
Get a free estimate Get a free estimate- Up to 5 pages, responsive
- CMS or headless setup
- Get a free estimate
- Deploy & domain setup
- Analytics + SEO basics
Most popular
Growth
from $2,800
/month (retainer)
For a real web app: accounts, dashboards, payments, and an admin panel.
Get a free estimate Get a free estimate- Custom web app build
- Auth, roles & payments
- API & third-party integrations
- Staging & CI/CD
- Admin dashboard
Scale
from $3,600
/month (retainer)
An ongoing engineering seat: features, fixes, and AI work every month.
Get a free estimate Get a free estimate- Everything in Growth
- Dedicated developer time
- Priority bug fixes
- AI features & automation
- Monitoring & monthly report
Need a custom quote?
Send us the scope and deadline. You'll get a written quote and a realistic timeline - usually within two days.
FAQ
FAQ
Frequently
Everything about scope, timeline,
Frequently
Asked Questions
Everything about scope, timeline,
pricing, and how we work.
1
Discovery, scope lock, weekly build cycles, then handover with docs and a support window.
2
Depends on scope. Sites take 2-5 weeks; most web apps land in 6-14, with weekly demos throughout.
3
Both. Early-stage teams get a leaner scope; larger teams get more process and documentation.
4
Yes. Legacy migrations and messy integrations are a large part of what we do.
5
You do. We hand over the repo, the docs, and the tests, and there is no licence or hosting you are locked into. Take it to another team whenever you want.
Articles & notes
Articles & notes
Inside
Engineering
Cutting cloud bills without cutting features
Where the money actually goes in a small production stack, and what is safe to turn off.
Discovery, scope lock, weekly cycles, handover - and what we changed after getting it wrong.
Caching, smaller models for easy paths, and measuring before you optimise anything.