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Senior Backend Engineer · AI Automation
Portrait of Kitti Onthong

Kitti Onthong (Galacgolf)

System builder for backend platforms, AI workflows, and production-grade automation
Open to remote, hybrid, and freelance opportunities

I design and ship systems end-to-end, from product-facing web apps to API layers, databases, infrastructure, and AI-powered automation. My focus is not just writing features, but building reliable operating systems for teams: scalable backend services, internal tools, workflow orchestration, and platforms that keep delivering under production load.

Core positioning: Senior / Backend / AI Automation / System Architecture

Focus

Backend systems, API design, infrastructure, and AI automation pipelines.

Location

Bangkok, Thailand

Website

galaclab.com

Availability

Open to remote, hybrid, and international product, platform, and consulting roles.

Metrics

Impact framed as systems delivered, workflows automated, and infrastructure kept running in production.

10k+ Users supported through campaign, commerce, and service platforms.
20+ hrs/mo Saved by automating reporting, content, and operational workflows.
Multi-service Production infrastructure managed across web apps, APIs, dashboards, and CMS-driven systems.

Core Technologies

Technologies I use to assemble product-facing systems and internal platforms.

Next.js NuxtJS React TypeScript Bun Angular NestJS Golang REST API WebSocket LINE Platform Integration WordPress Strapi MySQL PostgreSQL MongoDB Redis Docker GitHub Actions CI/CD Nginx DigitalOcean Cloudflare OpenAI API LLM Integration n8n AI Workflow Automation

Engineering Strengths

Strengths centered on building stable systems, not just implementing tickets.

System Architecture Backend Platform Design Database Design Performance Optimization Cloud Deployment Legacy Refactoring Production Debugging Business Workflow Design

System Architecture

Typical stack shape for the systems I design and operate.

Frontend Next.js, NuxtJS, Angular, admin dashboards, campaign interfaces, and operational tools.
API Layer NestJS and Golang services for business logic, integrations, auth, workflows, and reporting.
Data Layer MySQL, PostgreSQL, MongoDB, Redis, and CMS-backed content models for product operations.
Infrastructure Docker, Nginx, DigitalOcean, Cloudflare, deployment pipelines, and production debugging.

Experience

Senior-level ownership across backend platforms, AI-enabled systems, internal tooling, delivery workflows, and production reliability.

TWF Agency — Full-Stack Developer / Backend Engineer

Dec 2019 – Present
Lead backend and platform-oriented delivery across client products, internal systems, automation workflows, and production infrastructure.
  • Designed and evolved backend platforms that support multiple product surfaces, operational workflows, admin tools, integrations, and reporting use cases.
  • Worked across architecture, API design, data modeling, system boundaries, and deployment strategy to turn growing product requirements into maintainable services.
  • Integrated AI-assisted workflows into production systems with structured outputs, review steps, evaluation logic, and safeguards designed for repeatable business use.
  • Built governance and lifecycle patterns around prompts, generated artifacts, approvals, versioning, and runtime behavior so AI-enabled features remain traceable and controllable.
  • Coordinated backend and frontend delivery across shared contracts, integration points, rollout sequencing, and handoff documentation to reduce implementation gaps between teams.
  • Improved engineering reliability through automated checks, regression coverage, cross-platform validation, CI quality gates, and production-focused debugging.
  • Continued to own infrastructure and runtime concerns across Dockerized services, cloud deployments, reverse proxies, databases, and operational recovery scenarios.

PIC Phuket — Developer

Mar 2017 – Dec 2019
Built the early product engineering foundation across web, mobile, and business software environments.
  • Delivered application features for real operational workflows, translating business requirements into usable product functionality.
  • Contributed to customer-facing and internal tools that supported day-to-day service operations and product experimentation.
  • Developed broad implementation experience across frontend, backend, data, and integration work that later grew into platform-level ownership.

Selected Engineering Projects

Public-safe examples of the kinds of systems I design: scalable platforms, operational tooling, AI-enabled workflows, and reliability-focused backend architecture.

AI-Enabled Workflow Platform

Designed a backend platform for multi-step AI-assisted workflows where generated outputs move through validation, review, versioning, and downstream business processes instead of being treated as isolated model responses.

Focus: workflow orchestration, structured outputs, artifact lifecycle, approval flows, traceability, production controls.

Model Evaluation and Quality Gate System

Implemented evaluation patterns for AI-generated results with repeatable scoring, controlled transitions, regression protection, and environment-aware validation before outputs are accepted into later workflow stages.

Focus: evaluation pipelines, quality gates, reproducibility, regression safety, controlled activation.

Context-Aware Document and Chat Workflows

Worked on systems that connect uploaded files, project context, generated analysis, and conversational interfaces so users can move from source material to grounded outputs without losing document awareness.

Focus: file grounding, context packaging, source-aware generation, analysis freshness, user-facing workflows.

Campaign and Operations Platforms

Built reusable systems for registration, verification, rewards, reporting, CMS workflows, staff operations, and campaign administration across multiple business use cases.

Focus: operational tooling, validation flows, admin systems, reporting, reusable product mechanics.

Data, Reporting, and Internal Tooling

Created dashboards, exports, analytics services, and support tooling that consolidate operational data and reduce the need for manual engineering intervention in recurring business processes.

Focus: backend APIs, normalization, reporting pipelines, internal platforms, workflow efficiency.

Production Platform Reliability

Improved deployment and runtime reliability across multi-service systems through containerization, readiness checks, automated verification, environment validation, and targeted recovery paths.

Focus: Docker, CI/CD, deployment safety, readiness verification, cross-platform testing, production recovery.

AI & Automation Work

Production-oriented AI work centered on control, evaluation, integration, and workflow reliability rather than standalone demos.

LLM Workflow Orchestration

Built prompt-driven workflows that combine business inputs, model calls, structured outputs, validation, approval steps, and downstream actions into repeatable operating processes.

AI Governance and Versioned Configuration

Designed patterns for managing prompt configuration, activation state, version history, review binding, and environment-specific behavior so AI features can evolve without losing operational control.

Grounded Analysis and Regeneration

Worked on generation flows that remain aware of source files and updated project data, helping regenerated outputs reflect the latest available context instead of stale intermediate results.

Automation Pipelines

Connected APIs, CMS data, reporting systems, workflow engines, and AI services to automate repetitive operational work while preserving review points where human judgment is still required.

Languages

Thai

Native

English

Professional Working Proficiency