Looks like you have JavaScript disabled. For the full Twine experience, you will need to re-enable it.

I'm Oisin O'Maolchallan, a senior full-stack engineer with 10+ years of experience shipping production SaaS, AI-enabled products, automation, cloud/data platforms, realtime systems, and client-facing software. I've delivered across agency/client environments, notably at Zalez AI and Allforce, focusing on production-grade architectures and scalable, cloud-native systems. I'm proficient in React, Next.js, Node.js, and TypeScript, with deep experience across PostgreSQL/Redis, Docker, AWS/GCP, Terraform, and modern AI orchestration. I design robust LLM workflows, multi-agent orchestration, tool calling, memory, evaluations, and audit logging, and I thrive in cross-functional teams to ship high-impact software.…I'm Oisin O'Maolchallan, a senior full-stack engineer with 10+ years of experience shipping production SaaS, AI-enabled products, automation, cloud/data platforms, realtime systems, and client-facing software. I've delivered across agency/client environments, notably at Zalez AI and Allforce, focusing on production-grade architectures and scalable, cloud-native systems. I'm proficient in React, Next.js, Node.js, and TypeScript, with deep experience across PostgreSQL/Redis, Docker, AWS/GCP, Terraform, and modern AI orchestration. I design robust LLM workflows, multi-agent orchestration, tool calling, memory, evaluations, and audit logging, and I thrive in cross-functional teams to ship high-impact software.

Oisin O'Maolchallan

Full Stack Developer, Web Developer, Front-End Developer, +2





I'm Oisin O'Maolchallan, a senior full-stack engineer with 10+ years of experience shipping production SaaS, AI-enabled products, automation, cloud/data platforms, realtime systems, and client-facing software. I've delivered across agency/client environments, notably at Zalez AI and Allforce, focusing on production-grade architectures and scalable, cloud-native systems. I'm proficient in React, Next.js, Node.js, and TypeScript, with deep experience across PostgreSQL/Redis, Docker, AWS/GCP, Terraform, and modern AI orchestration. I design robust LLM workflows, multi-agent orchestration, tool calling, memory, evaluations, and audit logging, and I thrive in cross-functional teams to ship high-impact software.…I'm Oisin O'Maolchallan, a senior full-stack engineer with 10+ years of experience shipping production SaaS, AI-enabled products, automation, cloud/data platforms, realtime systems, and client-facing software. I've delivered across agency/client environments, notably at Zalez AI and Allforce, focusing on production-grade architectures and scalable, cloud-native systems. I'm proficient in React, Next.js, Node.js, and TypeScript, with deep experience across PostgreSQL/Redis, Docker, AWS/GCP, Terraform, and modern AI orchestration. I design robust LLM workflows, multi-agent orchestration, tool calling, memory, evaluations, and audit logging, and I thrive in cross-functional teams to ship high-impact software.

Available to hire

I’m Oisin O’Maolchallan, a senior full-stack engineer with 10+ years of experience shipping production SaaS, AI-enabled products, automation, cloud/data platforms, realtime systems, and client-facing software. I’ve delivered across agency/client environments, notably at Zalez AI and Allforce, focusing on production-grade architectures and scalable, cloud-native systems.

I’m proficient in React, Next.js, Node.js, and TypeScript, with deep experience across PostgreSQL/Redis, Docker, AWS/GCP, Terraform, and modern AI orchestration. I design robust LLM workflows, multi-agent orchestration, tool calling, memory, evaluations, and audit logging, and I thrive in cross-functional teams to ship high-impact software.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Language

English

Fluent

Work Experience

Contract Developer at CreatorUp

October 1, 2025 - February 1, 2026

Led engineering for AI-powered SaaS platform; defined product architecture; built frontend with React/Next.js and backend APIs with Node.js and TypeScript; designed cloud-native infrastructure and CI/CD pipelines; guided AI orchestration and authentication; delivered scalable platform within three months.

Lead Full Stack Engineer at Zalez AI

May 1, 2025 - February 1, 2026

Led engineering for AI-powered SaaS platforms; architecture leadership; frontend and backend development; deployment infra; technical strategy.

Solutions Consultant at Allforce

June 1, 2024 - September 1, 2025

Specialized in scalable frontend systems, cloud-native apps and modern web architectures; contributed to architecture planning, improved development workflows, frontend integrations.

IT Consultant at Path Finder Sailing

July 1, 2024 - September 1, 2024

Developed high-performance real-time applications and scalable cloud infrastructure for race tracking; built distributed data processing workflows; implemented Redis caching; optimized state management and mapping features.

IT Contractor at Gorilla Sheets

January 1, 2024 - June 1, 2024

Developed scalable browser extension applications and cloud-native backend systems focused on Google Sheets productivity solutions and real-time database integrations.

IT Consultant at Verify World

January 1, 2023 - June 1, 2024

Full Stack Engineer focused on scalable backend systems, cloud-native infrastructure, serverless applications, and CI/CD automation using Node.js, React, and Google Cloud technologies.

Full Stack Engineer at TELUS

January 1, 2022 - October 1, 2023

Developed scalable enterprise React/Next.js frontend apps; built backend services with Node.js and Nest.js; updated TypeScript standards; improved API performance; contributed to AWS/Lambda solutions; implemented Sentry monitoring.

CTO / Lead Full Stack Engineer at Sucasa

November 1, 2021 - March 1, 2023

Led cross-platform mobile apps and cloud-native backend systems; architecture strategy; built React Native apps; Node.js APIs; managed teams; deployed cloud infrastructure; implemented CI/CD.

Full Stack Engineer at DPD UK

January 1, 2019 - December 1, 2022

Scaled frontend and backend for logistics and analytics; real-time dashboards; event-driven cloud workflows with Pub/Sub; BigQuery/Dataflow; Terraform for infra; monitored with Sentry.

Software Developer at Pictet Group

January 1, 2016 - December 1, 2019

Enterprise applications development; workflow automation; backend services integration; enterprise software improvements; code reviews; production incident resolution.