Find Principal engineer Jobs in Dublin 24, D

Software Architect
Holafly —Dublin, County Dublin
- Remote
- Spanish
- System design
- English
Principal Engineer (Highways & Active Travel)
SYSTRA —Dublin, County Dublin
- Project management
- Construction experience
- In-person
- Work from home
Principal Security Engineer, AWS Security
Amazon Data Services Ireland Limited —Dublin, County Dublin
- Full-time
- AWS
- Leadership
- Python
Principal Engineer – Galway, Ireland (Hybrid )
Hadfield Green —DUBLIN 2, County Dublin
- Full-time
- C++
- AI
Principal Software Engineer, Amazon DynamoDB
Amazon Development Centre Ireland Limited —Dublin, County Dublin
- Full-time
- AWS
- Software development
- SDLC
Principal Engineer, Design Verification Engineering
Analog Devices —Dublin, County Dublin
- Full-time
- Master's degree
- Scripting
- Electrical Engineering
- Relocation assistance
Senior/Principal Reliability (RAM) Engineer - Rail
WSP —Dublin, County Dublin
- Part-time
- Hybrid work
- Management
- Work from home
- Gym membership
Bridges Engineer
Amey Ltd —DUBLIN 1, County Dublin
- €45,000–€55,000 a year
- Master's degree
- Bachelor's degree
- Annual leave
- Gym membership
Quick apply
Highways Principal Engineer - Dublin & Cork
Jacobs —Dublin, County Dublin
- Hybrid work
- Supervising experience
- Civil Engineering
Principal Mechanical Engineer – Building Services
AECOM —Dublin, County Dublin
- Full-time
- Hybrid work
- Engineering
- HVAC
- Business
10d
Principal Civil Engineer
AtkinsRéalis —Dublin, County Dublin
- Full-time
- Hybrid work
- Communication skills
Senior/Principal System Safety Engineer - Rail
WSP —Dublin, County Dublin
- Part-time
- Hybrid work
- Work from home
- Gym membership
Principal Civil Engineer (Roads & Transportation)
AECOM —Dublin, County Dublin
- Full-time
- Hybrid work
- Construction experience
- Civil Engineering
Principal Engineer, Grid Insights Lead
Analog Devices —Glasnevin, County Dublin
- Full-time
- Computer Science
- Master's degree
- C++
Principal Information Security Engineer - Blockchain Technology
Mastercard —Dublin, County Dublin
- Full-time
- Computer Science
- Bachelor's degree
- No degree
Electrical Design Engineer
GREATECH —DUBLIN 15, County Dublin
- Holidays
- Microsoft Powerpoint
- Microsoft Word
- AutoCAD
- Referral programme
Principal Engineer, Web Platform – Team Web
Intercom —Dublin, County Dublin
- Hybrid work
- System design
- AWS
- JavaScript
- Annual leave
- Work from home
Project Engineer (Structures)
Clandillon Civil Consulting —Naas, County Kildare
- €45,000–€57,500 a year
- Full-time
- Hybrid work
- Management
- Microsoft Office
- Organisational skills
- Annual leave
- Work from home
Quick apply
12d
Mechanical Design Engineer
GREATECH —DUBLIN 15, County Dublin
- Holidays
- Microsoft Office
- Computer skills
- Communication skills
- Referral programme
Staff/Principal Product Designer
Intercom —Dublin, County Dublin
- Hybrid work
- System design
- Annual leave
- Work from home

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Software Architect

Holafly -
Dublin, County Dublin

Apply Now

Job details

Qualifications

Spanish
Node.js
React
System design
English
Google Cloud Platform
Distributed systems
Terraform
REST
Django
Python

Full job description

Company Overview

Holafly is a high-growth scale-up revolutionising how businesses and travellers connect to the internet abroad. Since 2018, we’ve empowered travellers in over 200 destinations worldwide with secure and reliable eSIM solutions. With a team of 500+ professionals across multiple countries, we are scaling globally to support travellers with seamless, unlimited data connectivity.

We’re not just connecting people—we’re enabling freedom and peace of mind, ensuring our users stay connected from the second they land, wherever their journey takes them.

The Role

We're looking for a Software Architect to join our SME team — a group of senior technical leaders who act as the connective tissue between our engineering squads, setting standards, reviewing critical design decisions, and driving architectural evolution across Holafly's platform.

This is not a management role. This is a deeply technical, high-influence position for someone who loves solving hard problems, cares about system design at scale, and can communicate clearly with both engineers and stakeholders.

What You'll Do

Design and review highly available, resilient architectures across Holafly's distributed systems.
Lead architectural decisions for high-traffic, high-demand environments — we serve millions of concurrent users.
Define and evolve patterns for event-driven architectures using async messaging, queues, and streaming.
Establish and enforce REST API design standards, including versioning, contracts, and documentation strategies.
Apply Domain-Driven Design (DDD) principles to help teams define clear bounded contexts, aggregates, and domain events.
Collaborate with engineering squads on technical design, code reviews, and architectural fitness functions.
Guide the platform's evolution across our full stack: React SPAs, Node.js BFFs, Python/Django/Celery microservices, and Flutter mobile apps.
Ensure infrastructure best practices across GCP, using Terraform, Helm, and ArgoCD for reliable, scalable deployments.
Champion digital and web security practices — secure-by-design, threat modeling, and compliance.
Act as a trusted SME and escalation point for squads facing complex technical challenges.

What We're Looking For

Required

Proven experience as a Software Architect or Principal/Staff Engineer in high-scale production environments.
Deep knowledge of high availability and resilience patterns: circuit breakers, bulkheads, graceful degradation, multi-region strategies.
Experience designing systems for high-demand, high-concurrency use cases at scale.
Strong hands-on background with event-driven architectures: message brokers, event sourcing, CQRS, async workflows.
Solid REST API design expertise — contract-first, versioning, OpenAPI/Swagger, backward compatibility.
Applied knowledge of Domain-Driven Design: bounded contexts, ubiquitous language, aggregates, domain events.
Familiarity with the Holafly tech stack, or the ability to ramp up quickly across it.
Strong digital/web security background: OWASP, zero-trust, auth patterns (OAuth2, JWT), API security, data protection.
English is mandatory — you'll work with a distributed, international team and write architectural documentation in English.

Nice to Have

Experience with Spec-Driven Development (OpenAPI-first, AsyncAPI) — bonus points if you've integrated AI tooling into that workflow.
Spanish language skills are a plus, given our presence in Spanish-speaking markets and the composition of our team.

You'll Thrive Here If You

Can zoom out to see system-wide implications and zoom in to review a pull request.
Write and communicate as clearly as you code — architecture docs, RFCs, and ADRs are part of the job.
Are opinionated but not rigid — you can defend a position and change your mind with new evidence.
Care about developer experience as much as system performance.
Are comfortable with ambiguity and enjoy shaping technical direction, not just executing it.

Tech Stack

Our platform is mobile-first and cloud-native. You'll be working across:

Frontend: React (SPA), Backend for Frontend: Node.js (BFF pattern), Microservices: Python · Django · celery, Mobile: Flutter (app-first), Cloud: Google Cloud Platform (GCP), Infrastructure as Code: Terraform, Deployment: Helm · ArgoCD (GitOps), Architectural style: Event-driven · REST APIs · DDD

Apply Now

Refine Your Search

principal engineer jobs in dublin 24, d

Software Architect

Principal Engineer (Highways & Active Travel)

Principal Security Engineer, AWS Security

Principal Engineer – Galway, Ireland (Hybrid )

Principal Software Engineer, Amazon DynamoDB

Principal Engineer, Design Verification Engineering

Senior/Principal Reliability (RAM) Engineer - Rail

Bridges Engineer

Highways Principal Engineer - Dublin & Cork

Principal Mechanical Engineer – Building Services

Principal Civil Engineer

Senior/Principal System Safety Engineer - Rail

Principal Civil Engineer (Roads & Transportation)

Principal Engineer, Grid Insights Lead

Principal Information Security Engineer - Blockchain Technology

Electrical Design Engineer

Principal Engineer, Web Platform – Team Web

Project Engineer (Structures)

Mechanical Design Engineer

Staff/Principal Product Designer

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