Find Principal software engineer Jobs in Ireland

Principal Software Engineer, AWS Lambda
Amazon Development Centre Ireland Limited —Dublin, County Dublin
- Full-time
- Computer Science
- AWS
- C++
Principal Software Engineer, Amazon DynamoDB
Amazon Development Centre Ireland Limited —Dublin, County Dublin
- Full-time
- AWS
- Software development
- SDLC
Forward Deployed AI Engineer (Senior/Principal Level)
Cloudera —Remote
- Full-time
- Remote
- Azure
- Doctoral degree
- AWS
- Annual leave
5d
Principal AI Vision Systems Engineer
Vantive —Castlebar, County Mayo
- Computer Science
- SQL
- Project management
Chief Technician
Longford County Council —County Longford
- €58,026–€75,233 a year
- Full-time
- Microsoft Powerpoint
- Microsoft Word
- AutoCAD
- Annual leave
13d
Senior Software Developer
Creditsafe —Dublin, County Dublin
- Full-time
- Hybrid work
- AWS
- Communication skills
- Python
- Annual leave
Principal DevOps Engineer - Decision Management Platform
Mastercard —Dublin, County Dublin
- Full-time
- DevOps
- Java
- AWS
Software Senior Principal Engineer - HyperScale AI Storage Systems
Dell Technologies —Cork, County Cork
- €113,900–€147,400 a year
- Full-time
- System design
- Java
- C++
12d
Security Infrastructure Software Engineer - Cork, Ireland
Qualcomm —Cork, County Cork
- Computer Science
- Engineering
- Java
- Employee stock purchase plan
12d
Software Principal Engineer - HyperScale AI Storage Systems
Dell Technologies —Cork, County Cork
- €94,350–€122,100 a year
- Full-time
- System design
- Java
- C++
12d
Senior Manager, Architecture & Components
Bristol-Myers Squibb —Dublin, County Dublin
- Full-time
- Microsoft Excel
- Azure
- Computer Science
11d
Software CAD Engineer - Cork, Ireland
Qualcomm —Cork, County Cork
- Computer Science
- Engineering
- C++
- Employee stock purchase plan
- Gym membership
8d
Data Platform Engineer - Cybersecurity
Workday —Dublin, County Dublin
- €70,200–€105,400 a year
- Full-time
- Azure
- Engineering
- AWS
5d
Senior Engineering Manager, API Hub
Bentley Systems —DUBLIN 2, County Dublin
- Communication skills
Director, Software Engineering (AI & Platform Software) - Cork, Ireland
Qualcomm —Cork, County Cork
- Doctoral degree
- Computer Science
- Engineering
- Employee stock purchase plan
14d
Software Senior Engineer - HyperScale AI Storage Systems
Dell Technologies —Cork, County Cork
- €75,820–€98,120 a year
- Full-time
- System design
- Java
- C++
12d
Staff Systems Engineer (AI and DSP) - Cork, Ireland
Qualcomm —Cork, County Cork
- Doctoral degree
- Engineering
- System design
- Employee stock purchase plan
Electrical, Controls and Instrumentation Lead
Echelon DC —Dublin, County Dublin
- Full-time
- CAD
- Construction experience
- In-person
Quick apply
GPU Performance Verification Engineer - Cork, Ireland
Qualcomm —Cork, County Cork
- Doctoral degree
- Computer Science
- Engineering
- Employee stock purchase plan
Product Security Engineer, Senior - Vulnerability Management Research and Automation - Cork, Ireland
Qualcomm —Cork, County Cork
- Doctoral degree
- Computer Science
- Engineering
- Employee stock purchase plan

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Principal Software Engineer, AWS Lambda

Amazon Development Centre Ireland Limited -
Dublin, County Dublin

Apply Now

Job details

Full-time

Qualifications

Rust (programming language)
Computer Science
AWS
C++
Bachelor's degree
Distributed systems
Mentoring
Software development
VMWare
Linux
Leadership
Communication skills

Full job description

DESCRIPTION

Are you passionate about building the foundational systems that power serverless computing for millions of customers worldwide? AWS Lambda is looking for a Principal Engineer to join our Lambda Experience team in Dublin, Ireland, where you will define the technical vision and drive the architecture for the Lambda execution environment, the system that execute customer code across the globe.

AWS Lambda is one of the fastest-growing services in AWS and sits at the heart of serverless computing. The Lambda execution environment is responsible for securely launching and managing the compute environment where customer code runs. This includes the orchestration of microVM-based isolation using Firecracker, the management of execution environments, and the runtime interfaces that bridge customer code with the Lambda platform. The systems you will work on process millions of invocations per second, operate across multiple AWS Regions, and must deliver consistently low latency while maintaining the highest standards of security and isolation.

As a Principal Engineer on this team, you will own the long-term technical strategy for the Lambda execution environment, working at the intersection of systems programming, virtualization, and cloud infrastructure. You will design and build the next generation of execution environment management, tackle challenges in cold start optimization, resource scheduling, and multi-tenant isolation, and drive the evolution of our Rust and Linux kernel-level components so that, among other things, they are ready to carry our customers’ next generation workloads, including agentic ones. You will operate as both a hands-on builder and a strategic technical leader — writing production code in Rust and C while simultaneously shaping the architectural direction of the Lambda Dublin organization across multiple levels.

You will also play a critical role in growing the engineering team. With strong senior engineers who are deep technically but still developing their strategic thinking and organizational influence, you will mentor and coach the next generation of senior technical leaders. You will establish engineering standards, lead design reviews, and create the technical culture that enables the team to operate at the highest level.

Key job responsibilities

Define and drive the long-term technical strategy for the Lambda execution environment, ensuring alignment with the broader Lambda and AWS Compute vision.

Architect and build systems for execution environment management, cold start optimization, and resource scheduling at massive scale.

Write production code in Rust and C, contributing directly to the most complex and critical components of the execution environment.

Lead the design and evolution of microVM orchestration, working closely with the Firecracker virtualization stack and Linux kernel interfaces.

Drive cross-team technical alignment with other Lambda teams, and adjacent AWS Serverless, Container and Compute teams.

Mentor and develop senior engineers, helping them grow in strategic thinking, influence, and organization-level impact.

Establish and raise the engineering bar through design reviews, technical standards, and operational excellence practices.

Represent the Lambda Experience team in senior technical forums across AWS, influencing the direction of serverless compute infrastructure.

A day in the life
You may start your morning reviewing operational metrics for the Lambda Execution Environment, looking at invocation latency percentiles, cold start performance, and resource utilization trends across AWS Regions. You may join a design review where a senior engineer is proposing a new approach to execution environment caching — you will ask probing questions, help them think through edge cases, and guide them toward a solution that balances performance with security isolation.

Mid-morning, you may dive into code, perhaps working on a Rust component that optimizes how execution environments are pre-warmed, or investigating a subtle performance regression in the microVM boot path. After lunch, you may collaborate with the Data Plane team in Seattle that routes Lambda invocations to execution environments, aligning on an upcoming change that affects invocation routing and ensuring the execution environment architecture can accommodate new traffic patterns gracefully.

You may then meet with Lambda Product Managers to discuss the customer experience, providing technical perspective on upcoming features and ensuring that the execution environment roadmap reflects customer needs and feedback. Later in the afternoon, you may spend time with your manager discussing the three-year technical roadmap and how the team's investments in next-generation scheduling will support Lambda's growth trajectory.

You may end the day mentoring one of your senior engineers, helping them prepare a technical proposal that will require them to influence a partner team — coaching them on how to frame the problem, anticipate objections, and build consensus. Throughout the day, you will balance deep technical work with broad organizational influence, serving as the technical anchor for a team that is building one of the most critical execution paths in all of AWS.

BASIC QUALIFICATIONS

Bachelor's degree in Computer Science, Engineering, a related field, or equivalent experience
Experience with virtualization (Hypervisors, VMware, Xen), or experience in software development
Experience providing technical leadership on high-impact cross-fucntional technical project
12+ years of professional software development experience, with significant depth in systems programming.
Deep knowledge of Linux kernel internals, including process scheduling, memory management, and namespaces/cgroups.

PREFERRED QUALIFICATIONS

Experience with designing and building applications using container and serverless technologies
Experience in written and verbal communication with the ability to present complex technical information in a clear and concise manner to executives and non-technical leaders
Experience as a mentor, tech lead or leading an engineering team
Experience with systems-level programming languages such as Rust and/or C/C++.
Experience optimizing cold start latency, resource scheduling, or execution environment lifecycle management in multi-tenant systems.
Experience designing and building large-scale, low-latency, highly available distributed systems.

Amazon is an equal opportunities employer. We believe passionately that employing a diverse workforce is central to our success. We make recruiting decisions based on your experience and skills. We value your passion to discover, invent, simplify and build. Protecting your privacy and the security of your data is a longstanding top priority for Amazon. Please consult our Privacy Notice (https://www.amazon.jobs/en/privacy_page) to know more about how we collect, use and transfer the personal data of our candidates.

Amazon is an equal opportunity employer and does not discriminate on the basis of protected veteran status, disability, or other legally protected status.

Our inclusive culture empowers Amazonians to deliver the best results for our customers. If you have a disability and need a workplace accommodation or adjustment during the application and hiring process, including support for the interview or onboarding process, please visit https://amazon.jobs/content/en/how-we-hire/accommodations for more information. If the country/region you’re applying in isn’t listed, please contact your Recruiting Partner.

Apply Now

Refine Your Search

principal software engineer jobs in ireland

Principal Software Engineer, AWS Lambda

Principal Software Engineer, Amazon DynamoDB

Forward Deployed AI Engineer (Senior/Principal Level)

Principal AI Vision Systems Engineer

Chief Technician

Senior Software Developer

Principal DevOps Engineer - Decision Management Platform

Software Senior Principal Engineer - HyperScale AI Storage Systems

Security Infrastructure Software Engineer - Cork, Ireland

Software Principal Engineer - HyperScale AI Storage Systems

Senior Manager, Architecture & Components

Software CAD Engineer - Cork, Ireland

Data Platform Engineer - Cybersecurity

Senior Engineering Manager, API Hub

Director, Software Engineering (AI & Platform Software) - Cork, Ireland

Software Senior Engineer - HyperScale AI Storage Systems

Staff Systems Engineer (AI and DSP) - Cork, Ireland

Electrical, Controls and Instrumentation Lead

GPU Performance Verification Engineer - Cork, Ireland

Product Security Engineer, Senior - Vulnerability Management Research and Automation - Cork, Ireland

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