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Ragnar Laud

@ragnarlaud

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Senior full-stack engineer building production systems and agentic AI platforms with TypeScript across web and mobile.

Thailand

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What I'm looking for

I’m looking for a role where I can own critical systems end-to-end—especially TypeScript/Node full-stack work and applied agentic AI—ship fast, and collaborate with product to design from scratch under real production constraints.

I’m a senior full-stack engineer with 9 years of professional experience building production systems at startups—across e-commerce, proptech, real-time events, hospitality, and AI. I’m often brought in as the sole or founding engineer to design, architect, and ship from scratch, focusing on systems that hold up in real usage.

Most recently, I solo-built a production-ready agentic AI platform for the hospitality sector in under two months. I designed a multi-tenant Node.js backend with per-tenant isolated SQLite clusters and an end-to-end tool-calling architecture using GPT-4 via the Vercel AI SDK, so the platform could handle complex, multi-turn guest interactions without human escalation.

Before that, I led platform ownership on real-time products, including migrating a legacy polling layer to Server-Sent Events (SSE) and refactoring the messaging pipeline around RabbitMQ for durability and debuggability. I also built and shipped specialized systems like an LG webOS port with DRM integration, and low-latency, high-stability real-time casino backends with provably-fair game logic.

I’ve also held CTO responsibilities at two companies and founded one—owning MVP delivery end-to-end, including backend, frontend, database schema, AWS infrastructure, and developer tooling. I enjoy building with practical engineering judgment: deliver quickly, stabilize what matters, and set teams up to scale with confidence.

Experience

Work history, roles, and key accomplishments

Full Stack Engineer

PAbot

Aug 2025 - Oct 2025 (2 months)

Solo-architected and built a production-ready agentic AI hotel customer service platform in under two months, covering the guest lifecycle from room search and booking through check-out. Designed a multi-tenant Node.js backend with isolated per-tenant SQLite/vector stores and integrated GPT-4 via Vercel AI SDK with tool-calling, delivered through an embeddable Web Components chat widget.

TypeScript Node.Js Vercel AI SDK SQLite Web Components NodeJS

Founder & Freelance Engineer

Softrix

Apr 2020 - Aug 2025 (5 years 4 months)

Founded and operated a software development studio, delivering client projects as the sole or lead engineer across e-commerce, real-time systems, and platform integrations. Built and shipped an LG webOS streaming app (including playback UI and DRM integration), and developed low-latency real-time casino backends plus a Telegram affiliate distribution system.

TypeScript Angular LG WebOS Telegram Bot API Performance Optimization

Full Stack Developer

VNTRS

Dec 2021 - Mar 2023 (1 year 3 months)

As the sole engineer on Votemo, owned a real-time audience engagement platform end to end after inheriting a 2+ year-old codebase. Migrated the real-time layer from polling to SSE and rewrote the RabbitMQ message pipeline for per-message durability and debuggability, improving responsiveness and reducing server load; shipped new interactive modules including real-time word clouds.

Express Server Sent Events (SSE)RabbitMQ PostgreSQL Kubernetes Audience Engagement

Chief Technology Officer

TenantPass

Jan 2021 - Jul 2021 (6 months)

Solo-built the TenantPass MVP over six months, delivering the API backend, frontend, database schema, AWS infrastructure, and developer tooling before hiring the first engineers. Integrated Plaid open-banking data for tenant screening to power proprietary financial scoring algorithms and managed early team onboarding.

NestJS Angular PostgreSQL AWS Plaid API Open Banking Data Integration MVP Development

Full Stack Developer

MeetFrank

Nov 2018 - Dec 2019 (1 year 1 month)

Replaced an underperforming external job-matching ML vendor with a custom algorithmic system, improving speed and reliability while eliminating recurring vendor cost. Overhauled MongoDB query performance by rewriting slow relational-style lookups as efficient aggregate pipelines to resolve platform response-time issues.

React MongoDB Aggregation Pipelines System Reliability

Full Stack Engineer

Devtailor

Oct 2017 - Oct 2018 (1 year)

Primary backend engineer (80% ownership) on FreshGO, a multi-store grocery e-commerce platform aggregating retail partners into a single checkout with 2-hour delivery. Designed and built back-office applications and store data integration pipelines, and implemented automated testing workflows using AWS.

Angular AWS Data Pipelines Automated Testing Back Office