performance engineer jobs in Dublin

An Post is seeking a Test Automation Lead to drive automation efforts across the IT function. You will lead the automation testing strategy, mentor Quality Engineering and development teams, and shape the automation framework and standards.You will collaborate across digital domains and services, contribute during Agile sprints, and work with DevOps to embed...

nineDots.io in Ireland is seeking a hands-on engineer to tackle performance challenges across large software systems. You will profile applications, identify bottlenecks, and implement memory- and compute-efficient improvements that scale with data and workloads.You will work with Python and C++, explore parallelism and distributed computing, and contribute...

Johnson Controls is seeking a Simulation and Modeling Engineer in Dublin, Ireland to support European air-cooled chiller engineering. You will run rating programs, analyze performance data per EN 14511 and EN 14825, and develop tools to aid engineering decisions.This role focuses on practical engineering, not software development, and involves collaboration...

Sleep.ai is an AI-powered sleep platform on a mission to change the world through the power of sleep. We help companies build sleep insights, coaching and research-backed solutions into their products and services, and we power consumer products such as the SleepScore app. We have offices in San Diego, Dublin and Berlin.We are seeing growing traction and...

OverviewTensorX is a sovereign AI infrastructure platform headquartered in Dublin. We run frontier open-weight large language models on our own NVIDIA Blackwell GPUs in European datacentres, under EU jurisdiction. Customers reach them through a drop-in OpenAI-compatible API. Nothing they send is retained after the request completes. We serve regulated...

Sleep.ai is an AI-powered sleep platform on a mission to change the world through the power of sleep. We help companies build sleep insights, coaching and research-backed solutions into their products and services, and we power consumer products such as the SleepScore app. We have offices in San Diego, Dublin and Berlin.We are seeing growing traction and...

Sleep.ai is an AI-powered sleep platform on a mission to change the world through the power of sleep. We help companies build sleep insights, coaching and research-backed solutions into their products and services, and we power consumer products such as the SleepScore app. We have offices in San Diego, Dublin and Berlin. We are seeing growing traction and...

Susquehanna International Group, located in Dublin, is looking for a Low Latency Trading Systems Research Engineer. In this role, you will innovate and optimize trading technologies while collaborating closely with traders and engineers. The position requires excellent skills in C/C++, networking knowledge, and experience in Python for data analysis. You'll...

Overview As a pioneer in low latency trading, Susquehanna is at the forefront in advances in the technology used to trade markets all around the world. As a Low Latency Trading Systems Research Engineer, you will be instrumental in driving enhancements and optimizations in how Susquehanna trades global markets in an extremely competitive environment. At...

TensorX, based in Dublin, is seeking GPU Performance Engineers to optimize inference engines, patch open-source components, and push improvements across a live fleet. You will work on kernel-level performance, model bring-up, and cache behavior to meet tight latency targets in a high-concurrency environment.Reporting to the CTO, you’ll patch defects in...

What you'll be doingInvestigating and resolving performance bottlenecks across complex software systems.Profiling and benchmarking applications to understand where improvements can be made.Working with existing codebases, debugging issues and implementing performance improvements.Optimising memory usage, computational efficiency and overall system...

Sleep.ai is seeking an experienced Performance Test Engineer to assess scalability, stability and responsiveness of our Azure-based platform. You will lead performance testing with backend/DevOps collaboration, shape the approach, and review tooling selections to fit our architecture.You will define test strategies for load, stress and scalability, establish...

is seeking an experienced Performance Test Engineer to lead scalability and reliability testing for its Azure-based platform. Make sure to read the full description below, and please apply immediately if you are confident you meet all the requirements. You will design test strategies, simulate real user load, and collaborate with backend and DevOps teams...

Sleep.ai, based in Dublin, seeks a Performance Test Engineer to assess scalability, stability and responsiveness under varying load. You will lead testing efforts with backend and DevOps, shaping the approach, selecting tools, and delivering findings to drive improvements. You will establish baselines, create realistic load scenarios and produce actionable...

People Source B.V. is assisting a PE-backed client in Dublin 15 to appoint a Finance Director who will lead the Finance function for the CFO. If you are interested in applying for this job, please make sure you meet the following requirements as listed below. You will drive control, FP&A, project accounting, payroll and systems, unifying teams for strong...

Vertex Search is seeking a talented C++ Engineer to join a trading desk in Dublin. You will work closely with quantitative researchers and traders to design, build, and maintain production C++ systems that are fast, robust, and scalable.You’ll dive into existing codebases, understand data flows, and help shape decisions that balance speed with safety and...

Arista Networks is seeking graduate engineers to join world-leading SDN product development in C/C++, Go, and Python. Read on to find out what you will need to succeed in this position, including skills, qualifications, and experience. You will contribute across the Linux kernel and user-space, interfacing with ASICs and high-speed networking...

Arista Networks is seeking Graduate Engineers to learn world‑leading product development in C/C++, Go, Java and additional languages. The following information provides an overview of the skills, qualities, and qualifications needed for this role. You will work at the intersection of software and hardware, touching Linux kernel, drivers and networking...

Susquehanna International Group is seeking graduates for its Dublin office in August 2027 as a trading system engineer. The role emphasizes developing low-latency C++ strategies and high-performance libraries for large-scale quantitative research and data processing.You will start with a comprehensive education program before joining a trading team aligned...

F5 is seeking an AI Inference Engineer to bridge high‑performance model development with optimized deployment environments. Are you the right applicant for this opportunity Find out by reading through the role overview below. The role focuses on optimizing Large Language Models for inference across GPU‑rich data centers to edge devices, emphasizing...