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I am Aoife O'Sullivan, a Senior Software Engineer with 6+ years of experience building and scaling full-stack SaaS products. I specialize in React, Node.js, TypeScript, Python, and AWS, with a focus on reliable, scalable architectures and end-to-end delivery. I collaborate closely with product, UX, QA, and DevOps teams, leading AI-driven automation and RAG-based data retrieval efforts. I’m comfortable with cloud-native architectures, CI/CD, and modern DevOps practices to ship high-quality software.…I am Aoife O'Sullivan, a Senior Software Engineer with 6+ years of experience building and scaling full-stack SaaS products. I specialize in React, Node.js, TypeScript, Python, and AWS, with a focus on reliable, scalable architectures and end-to-end delivery. I collaborate closely with product, UX, QA, and DevOps teams, leading AI-driven automation and RAG-based data retrieval efforts. I’m comfortable with cloud-native architectures, CI/CD, and modern DevOps practices to ship high-quality software.

Aoife O'Sullivan

Back-End Developer, Cloud Developer, DevOps Developer, +1

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I am Aoife O'Sullivan, a Senior Software Engineer with 6+ years of experience building and scaling full-stack SaaS products. I specialize in React, Node.js, TypeScript, Python, and AWS, with a focus on reliable, scalable architectures and end-to-end delivery. I collaborate closely with product, UX, QA, and DevOps teams, leading AI-driven automation and RAG-based data retrieval efforts. I’m comfortable with cloud-native architectures, CI/CD, and modern DevOps practices to ship high-quality software.…I am Aoife O'Sullivan, a Senior Software Engineer with 6+ years of experience building and scaling full-stack SaaS products. I specialize in React, Node.js, TypeScript, Python, and AWS, with a focus on reliable, scalable architectures and end-to-end delivery. I collaborate closely with product, UX, QA, and DevOps teams, leading AI-driven automation and RAG-based data retrieval efforts. I’m comfortable with cloud-native architectures, CI/CD, and modern DevOps practices to ship high-quality software.

Available to hire

I am Aoife O’Sullivan, a Senior Software Engineer with 6+ years of experience building and scaling full-stack SaaS products. I specialize in React, Node.js, TypeScript, Python, and AWS, with a focus on reliable, scalable architectures and end-to-end delivery.

I collaborate closely with product, UX, QA, and DevOps teams, leading AI-driven automation and RAG-based data retrieval efforts. I’m comfortable with cloud-native architectures, CI/CD, and modern DevOps practices to ship high-quality software.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Language

English

Fluent

Work Experience

Frontend Developer

January 1, 2017 - December 31, 2021

Developed and maintained frontend interfaces using HTML, CSS, Bootstrap, and modern JavaScript frameworks (React.js, Vue.js, Angular.js, Next.js, TypeScript). Built responsive user interfaces, collaborated with design and backend teams, and contributed to a cohesive user experience across SaaS platforms.

Backend Developer

August 1, 2021 - January 31, 2024

Designed and implemented internal REST APIs using Flask and FastAPI to support data scraping workflows. Integrated JavaScript-rendered content with Playwright and Selenium. Supported internal React-based tooling and containerized services on AWS, enabling efficient deployment and data delivery.

Senior Software Engineer

June 1, 2022 - January 31, 2025

Designed and evolved backend architectures and API workflows to improve scalability, maintainability, and performance. Practised clean code, unit testing, and TDD, contributing to stable releases and reduced production defects. Optimised database queries and backend services, significantly improving response times for client-facing features. Actively participated in Agile/Scrum ceremonies, sprint planning, and cross-team technical discussions.

Senior Software Engineer at Apadmi Ltd

February 1, 2025 - December 1, 2025

Architected microservice and serverless components, increasing system reliability, fault tolerance, and scalability. Built scalable full-stack features using React, Node.js, TypeScript, Python, and AWS. Implemented REST APIs, CI/CD pipelines with GitHub Actions and Docker, and conducted code reviews and performance optimisations. Collaborated with Product, UX, QA, and DevOps teams, and led AI-driven automation and RAG workflows to enhance data retrieval and reduce manual operational effort.