Find Javascript developer Jobs in Ballyfermot, D

Lead Software Engineer-Front End React/Web
JPMorganChase —DUBLIN 2, County Dublin
- Full-time
- Java
- JavaScript
- Mentoring
11d
Test Automation Engineer
U.S. Bank National Association —DUBLIN 18, County Dublin
- €85,765–€100,900 a year
- Full-time
- Azure
- Java
- JavaScript
Marketing Technology Analyst
Colgate-Palmolive —Dublin, County Dublin
- €58,000–€61,500 a year
- Hybrid work
- Computer Science
- SQL
- Clinic
- Annual leave
12d
Business Support Engineer
Meta —Dublin, County Dublin
- Weekend availability
- Azure
- Computer Science
- Customer service
4d
Learning Media Developer, Data Center Learning
Amazon Data Services Ireland Limited —Dublin, County Dublin
- Full-time
- AWS
- Bachelor's degree
- JavaScript
Salesforce Platform Engineer
Bank of Ireland —Dublin, County Dublin
- Full-time
- Hybrid work
- Salesforce
- Java
- SQL
- Annual leave
- Employee assistance program
Senior Power Platform Developer/Solution Architect
TEKenable —Dublin, County Dublin
- Remote
- Azure
- DevOps
- Bachelor's degree
Quick apply
Senior Solution Architect – D365 CE
Uniphar PLC —DUBLIN 24, County Dublin
- Full-time
- Azure
- Customer service
- JavaScript
Quick apply
10d
Senior AWS Engineer
ResMed —Dublin, County Dublin
- Full-time
- Computer Science
- Salesforce
- DevOps
- Referral programme
D365 Power Platform Developer
MTM Engineering —Dublin, County Dublin
- Full-time
- Azure
- DevOps
- Analysis skills
Quick apply
CRM Developer
Glen Dimplex Europe Holdings Ltd —Cloghran, County Dublin
- Full-time
- Azure
- Microsoft Outlook
- Computer Science
Quick apply
Analytics Team Lead
Citco —Dublin, County Dublin
- Full-time
- Azure
- Computer Science
- Engineering
Success Architect, Marketing Cloud
Salesforce —Dublin, County Dublin
- Full-time
- Remote
- Spanish
- Salesforce
- SQL
Senior Software Engineer, Cash Forecasting
Ripple —Dublin, County Dublin
- Full-time
- Azure
- Oracle
- AWS
Quick apply
12d
Senior Developer Advocate
MongoDB —Dublin, County Dublin
- Full-time
- Azure
- English
- Java
Senior Product Engineer
Intercom —Dublin, County Dublin
- Hybrid work
- AWS
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- No degree
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Senior Power Platform / Dynamics 365 Consultant
Codec —Dublin, County Dublin
- Full-time
- Hybrid work
- Azure
- Oracle
- JavaScript
Quick apply
ServiceNow Architect
Uniphar PLC —DUBLIN 24, County Dublin
- Full-time
- JavaScript
- Scripting
- Communication skills
Quick apply
QA Engineer
Grouper —Dublin, County Dublin
- Full-time
- Hybrid work
- Computer Science
- Java
- Bachelor's degree
Quick apply

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Test Automation Engineer
U.S. Bank National Association —DUBLIN 18, County Dublin
Performance-based incentives for eligible employees (as defined by relevant plan rules), awarded through transparent, objective criteria that recognize both…
€85,765–€100,900 a year
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FDM Group —Dublin, County Dublin
Bachelor’s degree in Computer Science, Software Engineering, or a related field — or equivalent hands-on experience. Annual leave and work-place pension.
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Lead Software Engineer-Front End React/Web

JPMorganChase -
DUBLIN 2, County Dublin

Apply Now

Job details

Full-time
11 days ago

Qualifications

CSS
React
D3.js
Java
JavaScript
REST
Mentoring
SEO
GitHub
UI
Typing
GraphQL
AI
Canvas
TypeScript
Debugging
SDLC

Full job description

JOB DESCRIPTION

Be an integral part of an agile team that's constantly pushing the envelope to enhance, build, and deliver top-notch technology products.

As a Senior Lead Software Engineer at JPMorganChase within the Employement Platform business, you are an integral part of an agile team that works to enhance, build, and deliver trusted market-leading technology products in a secure, stable, and scalable way. Drive significant business impact through your capabilities and contributions, and apply deep technical expertise and problem-solving methodologies to tackle a diverse array of challenges that span multiple technologies and applications.

Job responsibilities

Lead development of complex, user-facing web applications using React + TypeScript, owning the front-end architecture and delivery approach.
Lead and mentor a team of software engineers, setting technical direction, best practices, and coding standards across the organization, with a focus on Java-based, cloud-first, and API-first engineering principles.
Partner with UX/Product to translate designs into polished experiences; influence requirements with feasibility, performance, and accessibility considerations.
Establish and evolve front-end standards: component architecture, state management, routing, code conventions, and testing practices.
Build using JPMC's EXDS UI foundations: design system / component library, theming, responsive layouts, and cross-browser compatibility.
Drive performance and quality: Core Web Vitals, bundle optimization, rendering strategies, caching, and runtime observability.
Implement advanced UI capabilities such as rich data visualization, real-time updates, offline-friendly patterns, and robust form/workflow experiences.
Ensure secure client-side patterns: safe auth flows, token handling guidance, secure storage, and protection against common web vulnerabilities.
Collaborate with backend teams on API contracts (GraphQL/REST) and advocate for front-end friendly patterns (pagination, filtering, error models).
Drives adoption and governance of approved AI-assisted engineering practices across teams to improve code quality, delivery speed, and operational outcomes (e.g., AI-assisted code review/refactoring, test acceleration, release readiness, incident/root-cause analysis), while establishing measurable validation standards (secure coding, peer review, automated testing) and promoting reuse of proven patterns and automation within the SDLC/TLM toolchain.
Applies knowledge of tools within the Software Development Life Cycle toolchain, including approved AI-assisted development and automation capabilities, to improve the value realized by automation at scale.

Required qualifications, capabilities, and skills

10+ years of professional software engineering experience, with deep expertise in front-end web development, including leading projects and mentoring engineers.
Expert-level proficiency in React (hooks, component composition, context, rendering behaviour, and concurrency-related patterns).
Strong TypeScript and modern JavaScript skills, including types-as-design, generics, and strict typing strategies.
Deep experience with modern front-end tooling (Vite/Webpack, Babel/SWC, npm/pnpm/yarn), build/release pipelines, and monorepos (where applicable).
Strong CSS expertise, including responsive design, scalable architecture (CSS Modules, CSS-in-JS, utility frameworks), and theming.
Advanced testing practices using Jest/Vitest, React Testing Library, and Playwright/Cypress, with ownership of test strategy.
Solid understanding of accessibility (WCAG/ARIA), including keyboard navigation, screen readers, and both automated and manual a11y testing.
Strong experience in performance engineering (profiling, code splitting, SSR/CSR trade-offs, caching) and API integration (GraphQL/REST, schema design, pagination, caching, and client state management).
Awareness of web security (XSS/CSRF, secure auth/session patterns, dependency hygiene), front-end observability (logging, metrics, debugging), and mandatory proficiency with AI-assisted engineering tools (e.g., GitHub Copilot) to accelerate development while ensuring correctness and security.
Demonstrated experience leading effective use of enterprise-authorized AI-assisted software development tools within the work environment (e.g., for coding, code review, test acceleration, troubleshooting) with the ability to set team expectations for validating AI outputs for correctness, performance, and security
Strong understanding of responsible AI use in engineering workflows, including data sensitivity considerations, secure handling of inputs/outputs, and adherence to resiliency and security expectations; experience coaching senior engineers/leads on compliant usage patterns and controls.

Preferred qualifications, capabilities, and skills

Experience with SSR/meta frameworks: Next.js / Remix and SEO considerations.
Experience leveraging a design system (Storybook, tokens).
Experience with micro-frontend patterns and module federation (where relevant).
Experience with visualization and rich UI: D3, Canvas/WebGL, advanced tables/grids, animation libraries.
Familiarity with authentication integrations (OIDC/OAuth2) and enterprise SSO constraints.
Proven track record modernizing legacy front ends and improving developer experience (DX).

ABOUT US

J.P. Morgan is a global leader in financial services, providing strategic advice and products to the world's most prominent corporations, governments, wealthy individuals and institutional investors. Our first-class business in a first-class way approach to serving clients drives everything we do. We strive to build trusted, long-term partnerships to help our clients achieve their business objectives.

We recognize that our people are our strength and the diverse talents they bring to our global workforce are directly linked to our success. We are an equal opportunity employer and place a high value on diversity and inclusion at our company. We do not discriminate on the basis of any protected attribute, including race, religion, color, national origin, gender, sexual orientation, gender identity, gender expression, age, marital or veteran status, pregnancy or disability, or any other basis protected under applicable law. We also make reasonable accommodations for applicants' and employees' religious practices and beliefs, as well as mental health or physical disability needs. Visit our FAQs for more information about requesting an accommodation.

ABOUT THE TEAM

Our professionals in our Corporate Functions cover a diverse range of areas from finance and risk to human resources and marketing. Our corporate teams are an essential part of our company, ensuring that we're setting our businesses, clients, customers and employees up for success.

Apply Now

Refine Your Search

javascript developer jobs in ballyfermot, d

Lead Software Engineer-Front End React/Web

Test Automation Engineer

Marketing Technology Analyst

Business Support Engineer

Learning Media Developer, Data Center Learning

Salesforce Platform Engineer

Senior Power Platform Developer/Solution Architect

Senior Solution Architect – D365 CE

Senior AWS Engineer

D365 Power Platform Developer

CRM Developer

Analytics Team Lead

Success Architect, Marketing Cloud

Senior Software Engineer, Cash Forecasting

Senior Developer Advocate

Senior Product Engineer

Senior Power Platform / Dynamics 365 Consultant

ServiceNow Architect

QA Engineer

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