Senior Full-Stack Engineer – Web Platform (Hybrid)

Fin. The highest performing Customer Agent; Dublin; Hybrid; EUR 90,000 - 130,000; Full time

Benefits offered by this job

Competitive salary & equity

Lunch & snacks

Health & dental insurance

Pension scheme & employer match

Life insurance

Flexible paid time off

Parental leave

Cycle-to-Work Scheme

MacBook provided

Job summary

Fin is seeking an experienced full stack engineer to design, build and maintain end-to-end web solutions across frontend and backend. You will collaborate with design, marketing, and content teams to deliver fast, scalable experiences.

You will implement APIs, manage data flows and integrate with third-party platforms, while optimizing performance and contributing to infrastructure automation. The role requires 8+ years of experience with React/Next.js, CMS platforms, and CI/CD, plus a strong

Qualifications

• 8+ years of experience in full stack development, with expertise in JavaScript, HTML, and CSS.
• Expert in front-end frameworks such as React, Next.js, Tailwind.
• Experience in CMS platforms (Contentful and Sanity) and marketing tools (Google Tag Manager, Marketo).
• Experience in CI/CD tools (CircleCI) to streamline and automate development workflows.
• Familiarity with infrastructure as code tools such as Terraform, and cloud platforms like AWS (Vercel, CloudFront, S3, etc.).
• Experience with A/B testing and familiarity with analytics tools to drive data-informed design and development decisions.
• Knowledge of performance optimization techniques and best practices for fast-loading, responsive websites.
• Experience in writing tests for front-end components, with testing frameworks (Jest, Mocha, Cypress).
• Strong problem-solving skills and the ability to work independently and as part of a team.

Responsibilities

• Design, build, and maintain end-to-end web solutions — from modern UIs to backend services, APIs, and infrastructure.
• Collaborate with design, brand, marketing, and content teams to deliver seamless, performant experiences across web and mobile.
• Develop backend logic and APIs, manage data flows, and integrate with third-party platforms.
• Optimize website performance by applying best practices in front-end development, including lazy loading and asset management.
• Set up and manage infrastructure using tools like Vercel, AWS, CloudFront, Terraform, and CI/CD pipelines (CircleCI).
• Implement and maintain web analytics and support A/B testing for data-driven decisions.
• Stay current with emerging technologies and trends to continually improve development processes and user experience.
• Be comfortable writing backend software to unblock yourself end to end.
• Build using the best tools in the industry and leverage AI-powered developer tools.

Skills

8+ years of experience

Full stack development

Front-end frameworks

React

Next.js

Tailwind

CI/CD workflows

A/B testing

Performance optimization

Testing front-end components

Problem-solving

Education

Bachelor’s degree in Computer Science or related field

Tools

Contentful

Sanity

Google Tag Manager

Marketo

CircleCI

Terraform

AWS

Vercel

CloudFront

S3

Jest

Mocha

Cypress

Job description

Fin is seeking an experienced full stack engineer to design, build and maintain end-to-end web solutions across frontend and backend. You will collaborate with design, marketing, and content teams to deliver fast, scalable experiences.

You will implement APIs, manage data flows and integrate with third-party platforms, while optimizing performance and contributing to infrastructure automation. The role requires 8+ years of experience with React/Next.js, CMS platforms, and CI/CD, plus a strong