Find Junior computer science Jobs in Dublin, D

Kernel / Hypervisor Engineer, Firecracker
Amazon Development Centre Ireland Limited —Dublin, County Dublin
- Full-time
- Computer Science
- SQL
- AWS
9h
Machine Learning Systems Engineer
Tether Operations Limited —Dublin, County Dublin
- Full-time
- Remote
- Azure
- Computer Science
- System design
11d
Senior Software Development Engineer, AWS RDS SQL Server
Amazon Development Centre Ireland Limited —Dublin, County Dublin
- Full-time
- Oracle
- Computer Science
- Java
12d
Sr. SDE, Workforce Solutions (WS)
Amazon Development Centre Ireland Limited —Dublin, County Dublin
- Full-time
- Computer Science
- System design
- Java
11d
Full-time Staff Nurse - Day Ward - UPMC Sports Surgery Clinic, Dublin
UPMC —Santry, County Dublin
- €39,101–€59,074 a year
- Clinic
- Communication skills
5d
Lead Software Engineer
Mastercard —Dublin, County Dublin
- Full-time
- Computer Science
- English
- Java
Oracle ERP or HCM Programme/Project Manager | Senior Manager | Technology Consulting | Advisory
PwC —Dublin, County Dublin
- Full-time
- Oracle
- Bachelor's degree
Senior Databricks Data Engineer
EXL Service —Dublin, County Dublin
- Full-time
- Hybrid work
- Microsoft Excel
- Azure
- Oracle
Technology Risk Assurance Manager
RSM —Dublin, County Dublin
- Oracle
- Computer Science
- ERP systems
Quick apply
14d
Senior Java Developer
Davy —Dublin, County Dublin
- Full-time
- Hybrid work
- Azure
- Oracle
- Computer Science
- Employee assistance program
Quick apply
Sr. SDE, Distributed Databases
eBay Inc. —Dublin, County Dublin
- Full-time
- Computer science
- Computer Science
- Master's degree
Senior Penetration Tester
Integrity360 —Dublin, County Dublin
- Computer Science
- Windows
- Java
Cloud Platform Manager
Elwood Roberts —Dublin, County Dublin
- €500–€600 a day
- Full-time
- Azure
- Computer Science
- DevOps
Quick apply
Sr. Manager, Medical Writing
Alfasigma Group —Dublin, County Dublin
- Microsoft Powerpoint
- Microsoft Word
- Microsoft Excel
AI & Data - Data Solution Architect - Manager
EY —DUBLIN 2, County Dublin
- Full-time
- Hybrid work
- Azure
- Computer Science
- Data analysis skills
- Gym membership
Senior Electrical Estimator
Mercury Engineering —Dublin, County Dublin
- No degree
- Communication skills
- Time management
Sr. Engineer, DevOps
iCims —DUBLIN 2, County Dublin
- Full-time
- Azure
- Computer Science
- DevOps
- Annual leave
- Life insurance
Senior Firmware Engineer I (FPGA)
Microchip Technology —Dublin, County Dublin
- Full-time
- Computer Science
- Master's degree
- Project management
Workday HCM Programme/Project Manager | Senior Manager | Technology Consulting | Advisory
PwC —Dublin, County Dublin
- Full-time
- Bachelor's degree
Sr. Engineer, DevOps
iCIMS Talent Acquisition —DUBLIN 2, County Dublin
- Full-time
- Azure
- Computer Science
- DevOps
- Annual leave
- Life insurance

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Kernel / Hypervisor Engineer, Firecracker

Amazon Development Centre Ireland Limited -
Dublin, County Dublin

Apply Now

Job details

Full-time
9 hours ago

Qualifications

Rust (programming language)
Computer Science
SQL
AWS
C++
Bachelor's degree
Software development
GitHub
Linux
ARM

Full job description

DESCRIPTION

Join us at AWS Lambda in Dublin, Ireland, building Firecracker - the open-source virtual machine monitor (VMM) purpose-built for serverless and container workloads. Firecracker runs at global scale as the foundation of AWS Lambda, Aurora D-SQL, and other AWS services, and is integrated by 10+ external teams as part of their platforms.

We are looking for a Kernel / Hypervisor Engineer who is passionate about low-level systems programming and wants to push the boundaries of virtualization technology. In this role, you will work at the intersection of hardware and software - designing and implementing hypervisor components, device emulation, memory management, and guest-host interfaces in Rust on Linux/KVM. Your work will directly impact the security, performance, and efficiency of compute infrastructure serving millions of customers.

Key job responsibilities

Design, develop, and maintain hypervisor and VMM components in Rust, including virtual device emulation, memory management, and vCPU scheduling.
Optimize boot latency, memory footprint, and I/O throughput for ephemeral microVM workloads at global scale.
Harden the security boundary between guest and host, contributing to threat modeling and implementing isolation mechanisms.
Contribute to the upstream Linux kernel where needed to support Firecracker's roadmap.
Mentor and coach junior engineers, drive code quality through reviews, and champion best practices.
Participate in on-call rotation to ensure operational excellence of Firecracker-based services.

A day in the life
Your day might start by reviewing pull requests on the Firecracker open-source repository, providing feedback to community contributors or teammates. You then dive into implementing a new virtio device or optimizing a hot path in the VMM, writing Rust and reasoning about memory safety and performance trade-offs. After lunch, you collaborate with an internal AWS service team that consumes Firecracker to debug a subtle guest-host interaction - perhaps a vCPU scheduling anomaly or an unexpected memory mapping behavior. You wrap up by writing a design doc for an upcoming kernel interface change, getting input from colleagues across the team. Throughout the day, you balance deep technical work with collaboration, working in the open on GitHub alongside a global community.

About the team
We are the Compute Capsule team within AWS Lambda, based in Dublin, Ireland. We own Firecracker end-to-end - from its open-source development on GitHub to its deployment at scale inside AWS. We focus on serverless and container virtualization, trusted compute, and server fleet tooling. We value work-life balance, respect each other's time, and invest in growing every team member through mentorship, challenging assignments, and training. We believe diverse perspectives make us stronger and actively seek team players who thrive in collaborative, inclusive environments.

BASIC QUALIFICATIONS

Experience (non-internship) in professional software development
Hands-on experience with low-level systems programming (e.g., kernel, hypervisor, firmware, or embedded systems)
Proficiency in at least one systems language: C, C++, or Rust
Solid understanding of Linux internals (syscalls, memory management, process Experience with virtualization technologies (KVM, Xen, QEMU, or similar)

PREFERRED QUALIFICATIONS

Experience with Rust in production systems
Contributions to open-source projects (kernel, hypervisor, or systems tooling)
Experience with device emulation or virtio
Familiarity with hardware-assisted virtualization (Intel VT-x, AMD-V, or Arm virtualization extensions)
Knowledge of performance profiling and optimization at the systems level (perf, ftrace, eBPF)
Bachelor's degree or higher in Computer Science, Engineering, or a related field.

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

junior computer science jobs in dublin, d

Kernel / Hypervisor Engineer, Firecracker

Machine Learning Systems Engineer

Senior Software Development Engineer, AWS RDS SQL Server

Sr. SDE, Workforce Solutions (WS)

Full-time Staff Nurse - Day Ward - UPMC Sports Surgery Clinic, Dublin

Lead Software Engineer

Oracle ERP or HCM Programme/Project Manager | Senior Manager | Technology Consulting | Advisory

Senior Databricks Data Engineer

Technology Risk Assurance Manager

Senior Java Developer

Sr. SDE, Distributed Databases

Senior Penetration Tester

Cloud Platform Manager

Sr. Manager, Medical Writing

AI & Data - Data Solution Architect - Manager

Senior Electrical Estimator

Sr. Engineer, DevOps

Senior Firmware Engineer I (FPGA)

Workday HCM Programme/Project Manager | Senior Manager | Technology Consulting | Advisory

Sr. Engineer, DevOps

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