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I am a front-end focused Software Engineer with 6+ years of experience designing and building scalable, testable web applications in regulated and data-heavy domains. I specialize in modern Angular architecture, automated testing, and API-driven systems, with hands-on experience across front end, backend, and data layers. I have led rewrites of legacy systems, mentored engineers, and owned features from design through production. I thrive in fast-moving, cross-functional teams, balancing technical quality with real business outcomes.…I am a front-end focused Software Engineer with 6+ years of experience designing and building scalable, testable web applications in regulated and data-heavy domains. I specialize in modern Angular architecture, automated testing, and API-driven systems, with hands-on experience across front end, backend, and data layers. I have led rewrites of legacy systems, mentored engineers, and owned features from design through production. I thrive in fast-moving, cross-functional teams, balancing technical quality with real business outcomes.

Dónal O’Connor

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

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I am a front-end focused Software Engineer with 6+ years of experience designing and building scalable, testable web applications in regulated and data-heavy domains. I specialize in modern Angular architecture, automated testing, and API-driven systems, with hands-on experience across front end, backend, and data layers. I have led rewrites of legacy systems, mentored engineers, and owned features from design through production. I thrive in fast-moving, cross-functional teams, balancing technical quality with real business outcomes.…I am a front-end focused Software Engineer with 6+ years of experience designing and building scalable, testable web applications in regulated and data-heavy domains. I specialize in modern Angular architecture, automated testing, and API-driven systems, with hands-on experience across front end, backend, and data layers. I have led rewrites of legacy systems, mentored engineers, and owned features from design through production. I thrive in fast-moving, cross-functional teams, balancing technical quality with real business outcomes.

Available to hire

I am a front-end focused Software Engineer with 6+ years of experience designing and building scalable, testable web applications in regulated and data-heavy domains. I specialize in modern Angular architecture, automated testing, and API-driven systems, with hands-on experience across front end, backend, and data layers.

I have led rewrites of legacy systems, mentored engineers, and owned features from design through production. I thrive in fast-moving, cross-functional teams, balancing technical quality with real business outcomes.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Language

English

Fluent

Work Experience

Software Engineer at Baillie Gifford

May 1, 2022 - October 1, 2025

Lead engineer on a full rewrite of a legacy Angular application, redesigning front end architecture to improve reliability, testability, and long-term maintainability. Built data-driven UIs and developed .NET APIs supporting business-critical regulatory and reporting workflows. Implemented automated testing across unit, integration, and end-to-end layers using Jasmine, Karma, and Cypress. Delivered scalable, service-backed data products to replace spreadsheet-driven processes within the firm’s reporting & analytics platform. Acted as technical point of contact across projects, mentoring junior developers and collaborating with stakeholders.

Software Engineer at IRL CA Ltd.

June 1, 2019 - March 1, 2022

Led development of the company’s first validated Risk Management SaaS product, launched commercially in 2021 for regulated industries. Designed and built Angular front ends and .NET APIs within a regulated environment, working closely with validation and testing teams. Built a central Audit Trail component underpinning all products, ensuring traceability, data integrity, and regulatory compliance. Promoted to Team Lead, managing a team of engineers and contributing to technical direction, delivery planning, and mentoring. Worked directly with stakeholders and clients to gather requirements, demonstrate solutions, and iterate on product design.

Software Engineer Intern at Payzone Ireland

April 1, 2018 - September 1, 2018

Migrated production databases from SQL Server 2008 to SQL Server 2017, improving performance and maintainability. Rewrote an internal admin web application supporting the Gift Card platform using Angular and .NET. Integrated a new product onto Payzone payment terminals as part of a cross-functional engineering team.