Find Senior software engineer (python) Jobs in Dublin 18, D

Senior Software Engineer (SDET)
Mastercard —Dublin, County Dublin
- Full-time
- Java
- Master's degree
- Agile
2d
Senior Robotics Software Engineer, Payload Integration
Anduril Industries —Dublin, County Dublin
- Full-time
- Computer Science
- Master's degree
- C++
Quick apply
Senior Software Engineer
Fivetran —Dublin, County Dublin
- Full-time
- AWS
- Communication skills
- Python
- Annual leave
- Sick pay
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Lead Software Engineer - Financial Wellness
Gen Digital Inc. —Dublin, County Dublin
- Full-time
- Hybrid work
- System design
- Java
- AWS
Quick apply
Senior Support Engineer - Dublin
OpenAI —Dublin, County Dublin
- Full-time
- Computer Science
- Bachelor's degree
- Scripting
- Relocation assistance
- Annual leave
Senior AI/ML Computational Scientist
Accenture —Dublin, County Dublin
- Full-time
- Computer science
- Doctoral degree
- Computer Science
14d
Senior DevOps Engineer
Amach Talent —Dublin, County Dublin
- AWS
- Scripting
- Communication skills
Quick apply
Lead AI Solutions Delivery Engineer
DocuSign —Dublin, County Dublin
- Computer Science
- Java
- Master's degree
3d
Senior Site Reliability Engineer
Replit —Dublin, County Dublin
- Full-time
- Remote
- Communication skills
- Python
- Life insurance
Senior DevOps Engineer
Newcode.ai —Dublin, County Dublin
- Full-time
- Hybrid work
- Azure
- English
- AI
Quick apply
Senior Software Engineer, Full-Stack
Ripple —Dublin, County Dublin
- Full-time
- ERP systems
- Java
- SQL
Quick apply
Lead Platform Engineer New
Kohlberg Kravis Roberts & Co. —Dublin, County Dublin
- Computer Science
- DevOps
- Engineering
22h
Senior Systems Engineer
Arista Networks —Dublin, County Dublin
- On call
- Computer Science
- Administrative experience
- Bachelor's degree
Quick apply
Senior Engineer, Network Observability
CoreWeave Europe —Dublin, County Dublin
- On call
- Computer Science
- Bachelor's degree
- Linux
- Employee assistance program
Quick apply
AI Infrastructure Engineer
Intercom —Dublin, County Dublin
- Hybrid work
- Computer Science
- Java
- Master's degree
- Work from home
Senior Data Scientist
MongoDB —Dublin, County Dublin
- Hybrid work
- Azure
- Master's degree
- AWS
13d
Staff Site Reliability Engineer
Replit —Dublin, County Dublin
- Full-time
- Remote
- Mentoring
- Communication skills
- Python
- Life insurance
Senior Site Reliability Engineer - CloudVision
Arista Networks —Dublin, County Dublin
- Full-time
- Hybrid work
- Azure
- Computer Science
- Software troubleshooting
Quick apply
Senior AI Large Language Model (LLM) Architect
Accenture —Dublin, County Dublin
- Full-time
- Master's degree
- Bachelor's degree
- AI
14d
Senior Data Science Engineer
Verizon —Dublin, County Dublin
- Computer Science
- Java
- Master's degree
2d

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Senior Software Engineer (SDET)

Mastercard -
Dublin, County Dublin

Apply Now

Job details

Full-time
2 days ago

Qualifications

CI/CD
Law
Selenium
Java
Master's degree
Distributed systems
REST
Agile
UI
AI
Communication skills
Python

Full job description

Our Purpose

Mastercard powers economies and empowers people in 200+ countries and territories worldwide. Together with our customers, we’re helping build a sustainable economy where everyone can prosper. We support a wide range of digital payments choices, making transactions secure, simple, smart and accessible. Our technology and innovation, partnerships and networks combine to deliver a unique set of products and services that help people, businesses and governments realize their greatest potential.

Title and Summary

Senior Software Engineer (SDET)

Senior Software Engineer in Test (SDET)
Overview:

Who is Mastercard?

Mastercard is a global technology company in the payments industry. Our mission is to connect and power an inclusive, digital economy that benefits everyone, everywhere by making transactions safe, simple, smart, and accessible. Using secure data and networks, partnerships and passion, our innovations and solutions help individuals, financial institutions, governments, and businesses realise their greatest potential.

Our decency quotient, or DQ, drives our culture and everything we do inside and outside of our company. With connections across more than 210 countries and territories, we are building a sustainable world that unlocks priceless possibilities for all.

Role Overview

The CNPF Data & AI organisation is looking for a Senior Software Engineer in Test (SDET) to help build and assure the next generation of intelligent, agentic products and platforms. This is a hands-on senior engineering role for someone who combines deep automation expertise with strong software engineering fundamentals and practical experience testing AI-powered and agent-based systems in production-grade environments.

This role is ideal for a builder who enjoys solving complex quality challenges, designing scalable automation strategies, and raising the engineering bar across teams. We are particularly interested in candidates who can apply innovative thinking, strong ownership, and modern quality engineering practices to validate agentic applications, LLM-powered workflows, APIs, user journeys, and end-to-end platform reliability.

We are seeking a talented Senior Software Development Engineer in Test (SDET) to define and implement an effective automation and quality strategy within an Agile team. This role will validate application functionality, resilience, and business outcomes using modern testing methodologies, strong engineering discipline, and best practices in continuous integration and delivery.

Role:

Own end-to-end quality engineering for agentic applications, intelligent workflows, APIs, user interfaces, and supporting platform services.
Design, develop, and maintain robust automation frameworks for UI, API, integration, regression, and system-level testing.
Define test strategies for AI and agent-based systems, including workflow validation, response quality, tool usage, guardrails, reliability, and failure handling.
Build automated quality gates for CI/CD pipelines and ensure high-confidence releases through continuous testing.
Partner closely with software engineers, product managers, architects, and data/AI teams to ensure quality is built in from design through production.
Create meaningful test data, validate edge cases, identify defects early, and drive root cause analysis through to resolution.
Evaluate non-functional characteristics such as performance, reliability, observability, resilience, and scalability.
Contribute innovative ideas that improve testability, developer productivity, release confidence, and engineering effectiveness.
Demonstrate strong ownership by proactively identifying gaps, driving improvements, and mentoring team members on automation and quality best practices.

About You

Strong experience in software test automation, automation framework design, and code quality practices.
Proven ability to test modern distributed systems, APIs, event-driven architectures, and user-facing applications.
Experience validating AI-enabled or agentic applications, including prompt/workflow validation, output quality assessment, and scenario-based testing.
Strong understanding of Agile development, shift-left testing, continuous integration, and continuous delivery.
Comfortable working across ambiguity and applying innovative thinking to solve new and evolving quality challenges.
Strong communication, collaboration, and stakeholder management skills, with a bias for action and accountability.

Technical Skills

Strong programming skills in Java, Python, or similar languages used for automation and test engineering.
Hands-on experience with API and UI automation frameworks such as Playwright, Selenium, Cypress, REST Assured, or equivalent.
Experience integrating automated tests into CI/CD pipelines and quality gates.
Understanding of test approaches for LLMs, retrieval workflows, agent orchestration, and non-deterministic systems is highly desirable.
Familiarity with observability, logging, test data management, performance testing, and service virtualization is a plus.

Leadership & Mindset

Innovative thinker who challenges conventional approaches and introduces better ways to assure quality at scale.
Strong sense of ownership, accountability, and follow-through from test strategy through delivery outcomes.
Able to influence quality culture across teams and mentor others in modern automation and engineering excellence.

Corporate Security Responsibility

All activities involving access to Mastercard assets, information, and networks comes with an inherent risk to the organization and, therefore, it is expected that every person working for, or on behalf of, Mastercard is responsible for information security and must:

Abide by Mastercard’s security policies and practices;
Ensure the confidentiality and integrity of the information being accessed;
Report any suspected information security violation or breach, and
Complete all periodic mandatory security trainings in accordance with Mastercard’s guidelines.

Apply Now

Refine Your Search

senior software engineer (python) jobs in dublin 18, d

Senior Software Engineer (SDET)

Senior Robotics Software Engineer, Payload Integration

Senior Software Engineer

Lead Software Engineer - Financial Wellness

Senior Support Engineer - Dublin

Senior AI/ML Computational Scientist

Senior DevOps Engineer

Lead AI Solutions Delivery Engineer

Senior Site Reliability Engineer

Senior DevOps Engineer

Senior Software Engineer, Full-Stack

Lead Platform Engineer New

Senior Systems Engineer

Senior Engineer, Network Observability

AI Infrastructure Engineer

Senior Data Scientist

Staff Site Reliability Engineer

Senior Site Reliability Engineer - CloudVision

Senior AI Large Language Model (LLM) Architect

Senior Data Science Engineer

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