181 Performance Engineer jobs in Ireland
Performance Engineer
Posted 10 days ago
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Performance Engineer
Posted 10 days ago
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Senior Performance Engineer - Performance and Scale Telco team
Posted 11 days ago
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The Red Hat Performance and Scale Engineering team is looking for a Senior Software Engineer to join our global team. In this role, you will play a critical part in ensuring Red Hat OpenShift, the industry's leading enterprise Kubernetes platform, achieves world-class performance for our telecommunications partners. You will focus on optimizing OpenShift for Telco 5G and future edge computing workloads, including AI applications. If you are passionate about making things fast, scaling systems to their limits, and solving complex problems in a collaborative, open-source culture, we encourage you to apply.
**What you will do**
+ Understand the complex architecture of distributed Kubernetes systems and deploy lab environments across dozens or hundreds of nodes that are analogous to customer expectations and demands
+ Work closely with management, product owners, developers, and quality engineers to understand product requirements and build suitable performance test plans
+ Simulate real-world workloads to systematically stress environments through comprehensive end-to-end automation, leveraging custom built and state of the art open source tools and frameworks
+ Deep dive into performance issues with the intent of discovering their root cause on complex distributed systems
+ Develop and enhance orchestration, benchmarking, monitoring and reporting tools used within and beyond the Performance and Scale teams
+ Document your research and results clearly and concisely, communicate findings both internally and externally, and provide continuous feedback to Engineering teams and the leadership
**What you will bring**
+ 5+ years of experience in a role like Software Engineering, Performance Engineering, or Site Reliability Engineering (SRE).
+ Proven automation experience with scripting and automation, particularly in Python, Go, and/or Ansible.
+ Significant hands-on experience deploying and managing container orchestration platforms like Kubernetes or Red Hat OpenShift.
+ Solid Linux system administration and engineering skills, with a good understanding of bare metal server operations.
+ A solid understanding of performance analysis methodologies and experience with system-level performance tools (e.g., iostat, vmstat, sar, perf)
+ Familiarity with observability stacks (e.g., Prometheus, Grafana, Jaeger, OpenTelemetry, ELK, Splunk).
+ Understanding of cloud-native architectures, microservices, CI/CD pipelines, and collaborative software development methodologies, tools and version control (git, gitLab).
+ Knowledge of TCP/IP, DNS, DHCP, load balancing, and container networking
+ Demonstrated abilities to take initiative, work independently, proactively seek collaboration and drive projects to completion
**The following are considered a plus** **:**
+ Direct experience with telecommunications workloads (5G Core, RAN) or telco architectures.
+ Experience working with public clouds like AWS, Azure, GCP or IBM Cloud
+ Experience contributing to open-source projects.
+ Knowledge of AI/ML concepts and their application in tooling or network optimization
#LI-OA1
**About Red Hat**
Red Hat ( is the world's leading provider of enterprise open source ( software solutions, using a community-powered approach to deliver high-performing Linux, cloud, container, and Kubernetes technologies. Spread across 40+ countries, our associates work flexibly across work environments, from in-office, to office-flex, to fully remote, depending on the requirements of their role. Red Hatters are encouraged to bring their best ideas, no matter their title or tenure. We're a leader in open source because of our open and inclusive environment. We hire creative, passionate people ready to contribute their ideas, help solve complex problems, and make an impact.
**Inclusion at Red Hat**
Red Hat's culture is built on the open source principles of transparency, collaboration, and inclusion, where the best ideas can come from anywhere and anyone. When this is realized, it empowers people from different backgrounds, perspectives, and experiences to come together to share ideas, challenge the status quo, and drive innovation. Our aspiration is that everyone experiences this culture with equal opportunity and access, and that all voices are not only heard but also celebrated. We hope you will join our celebration, and we welcome and encourage applicants from all the beautiful dimensions that compose our global village.
**Equal Opportunity Policy (EEO)**
Red Hat is proud to be an equal opportunity workplace and an affirmative action employer. We review applications for employment without regard to their race, color, religion, sex, sexual orientation, gender identity, national origin, ancestry, citizenship, age, veteran status, genetic information, physical or mental disability, medical condition, marital status, or any other basis prohibited by law.
**Red Hat does not seek or accept unsolicited resumes or CVs from recruitment agencies. We are not responsible for, and will not pay, any fees, commissions, or any other payment related to unsolicited resumes or CVs except as required in a written contract between Red Hat and the recruitment agency or party requesting payment of a fee.**
**Red Hat supports individuals with disabilities and provides reasonable accommodations to job applicants. If you need assistance completing our online job application, email** ** ** **. General inquiries, such as those regarding the status of a job application, will not receive a reply.**
Performance Test Engineer
Posted 1 day ago
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Performance Test Engineer
Posted 1 day ago
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Principal Software Engineer, Cloud Performance
Posted 24 days ago
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*This position is based onsite in Nashville, TN
Oracle Cloud Infrastructure (OCI) delivers mission-critical applications for top tier enterprises around the world. Our cloud offers unmatched hyper-scale, multi-tenant services deployed in more than 50 regions worldwide. OCI is expanding its mission beyond the traditional boundaries of public cloud to include dedicated, hybrid and multi cloud, edge computing, and more.
At Technical Strategy and Oversight (TSO) organization, our mission is to support customer choice, transparency, and value when it comes to cloud infrastructure. We're embarking on ambitious new initiatives such as building new innovative platforms, high performance primitives, frameworks to support OCI developers, and new container runtime that will allow us to run the full variety of OCI services, including our most demanding, high-performance, high-availability services. We're also working on new ingenuities such as providing canonical implementation of core components for data planes through a data-plane runtime framework, developing a remote persistent storage solution with the latency and performance comparable to that of a local nVME drive, and developing standards and tools to identify critical performance improvements across OCI data-planes. We are hoping to enhance engineering efficiency by concentrating our expertise on building low level systems with high performance that can be adopted by our core cloud services across OCI.
As Oracle Cloud Infrastructure (OCI) continues its rapid expansion, we are seeking a skilled Software Engineer to join our newly established Cloud Performance Organization. This team plays a key role in addressing service inefficiencies, reducing cloud expenses, improving customer experience, and ensuring scalability. Your work will focus on optimizing the performance of OCI's critical components, internal tools, and applications while fostering a culture of performance engineering.
This is a greenfield opportunity to design and build new cloud services from the ground up. We are growing fast, still at an early stage, and working on ambitious new initiatives. You will be part of a team of smart, motivated, diverse people, and given the autonomy as well as support to do your best work. It is a dynamic and flexible workplace where you'll belong and be encouraged.
**Who are we looking for?**
You have experience with the design of major features and launching them into production. You've built and operated high-scale public cloud services and have deep understanding of control plane architecture. You work on most projects and tasks independently and extend technical leadership to development teams.
In this role, you will enable development teams by driving design of major service components, working with engineering managers and TPMs, and providing direct guidance to more junior team members. You can go from high level system design, writing architectural documentation and driving engineering peer reviews to hands-on prototyping, code reviews and project bootstrapping.
You are technically strong and get a lot done. You can balance speed and quality with iteration and incremental improvements. You've made life easier for other developers and have motivated your teams to make both process and service improvements with your ability to automate and instrument your service. You understand operational excellence and how to instill a culture of high quality and customer focus.
Career Level - IC4
**Responsibilities**
Key responsibilities
+ Evaluate the performance of cloud services, identify inefficiencies, and design cost-effective solutions.
+ Analyze and optimize internal tools, processes, and developer workflows to enhance operational efficiency.
+ Benchmark OCI services against competitors and identify performance improvement opportunities.
+ Collaborate with service teams to integrate performance evaluation tools into CI/CD pipelines.
+ Quantify and communicate the financial impact of inefficiencies, linking performance data to business metrics.
+ Develop and implement improvements in shared components, libraries, and runtime configurations (e.g., Java runtime, SDKs, and images).
Qualifications:
+ 5 to 10 years distributed service engineering experience in a software development environment
+ Development experience in a modern programming language, such as Java, C++, C#
+ Hands-on experience designing, developing, and operating public cloud service control or data planes
+ Hands-on experience in software performance profiling, analysis, and optimization.
+ Deep understanding of object-oriented design and SDK development, specifically within a cloud environment
+ Experience working closely with architects, principals, product, and program managers to deliver product features on time and with high quality.
+ Good knowledge of data structures, algorithms, operating systems, and distributed systems fundamentals.
+ Working familiarity with networking protocols (TCP/IP, HTTP) and standard network architectures.
+ Good understanding of databases, NoSQL systems, storage, and distributed persistence technologies.
+ Good understanding of Linux administration and networking stack configuration
+ Demonstrable technical leadership and mentorship skills
+ Familiarity with JVM and benchmarking tools.
Preferred Qualifications:
+ BS degree in Computer Science or related field (MS preferred)
+ Hands-on experience developing services on a public cloud platform (e.g., AWS, Azure, GCP)
+ Experience driving security reviews, documentation, UX reviews, and working with Product Managers from inception through launch
+ Building continuous integration/deployment pipelines with robust testing and deployment schedules
+ Proven experience in performance optimization of cloud infrastructure and distributed systems.
Career Level - IC4
**About Us**
As a world leader in cloud solutions, Oracle uses tomorrow's technology to tackle today's challenges. We've partnered with industry-leaders in almost every sector-and continue to thrive after 40+ years of change by operating with integrity.
We know that true innovation starts when everyone is empowered to contribute. That's why we're committed to growing an inclusive workforce that promotes opportunities for all.
Oracle careers open the door to global opportunities where work-life balance flourishes. We offer competitive benefits based on parity and consistency and support our people with flexible medical, life insurance, and retirement options. We also encourage employees to give back to their communities through our volunteer programs.
We're committed to including people with disabilities at all stages of the employment process. If you require accessibility assistance or accommodation for a disability at any point, let us know by emailing or by calling +1 in the United States.
Oracle is an Equal Employment Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, sexual orientation, gender identity, disability and protected veterans' status, or any other characteristic protected by law. Oracle will consider for employment qualified applicants with arrest and conviction records pursuant to applicable law.
HVAC Testing & Balancing Engineer
Posted 18 days ago
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Job Purpose:
To carry out air and water balancing, system testing, and commissioning services on HVAC installations in accordance with project specifications, industry standards (e.g. CIBSE, NEBB, BSRIA), and regulatory compliance. The role requires technical precision, attention to detail, and collaboration with onsite teams to ensure systems operate efficiently and as designed.
Key Responsibilities:-
Perform testing, adjusting, and balancing (TAB) of HVAC systems including air and water systems.
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Verify and document airflow and water flow to design specifications.
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Identify and troubleshoot issues with system performance and provide recommendations for corrective action.
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Collaborate with mechanical contractors, engineers, and commissioning teams to resolve technical issues.
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Conduct site inspections and audits of HVAC systems pre- and post-installation.
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Prepare and maintain accurate testing records and final balancing reports for client handover.
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Use specialised TAB equipment including manometers, anemometers, flow hoods, and pressure gauges.
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Ensure work is completed to relevant standards (e.g., CIBSE Code A, BSRIA, NEBB or equivalent).
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Ensure safe working practices on all sites, complying with site health and safety policies.
Essential:
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Minimum 2-3 years experience in HVAC testing, commissioning or balancing.
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Strong understanding of HVAC systems and schematics (AHUs, FCUs, VAVs, pumps, chillers, etc.).
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Proficiency in using testing and balancing tools and instruments.
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Full clean driving licence (if role requires travel to multiple sites).
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Good verbal and written communication skills.
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Strong attention to detail and problem-solving skills.
Desirable:
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TAB certification from recognised body (e.g., NEBB, AABC, BSRIA, or equivalent).
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Familiarity with building management systems (BMS) and control strategies.
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Experience with cleanrooms, data centres, or pharmaceutical environments.
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IOSH or Safe Pass certification.
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Field-based role with regular travel to client sites.
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May involve occasional work outside of standard hours or weekends depending on project timelines.
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PPE and specialised equipment will be provided as required.
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Senior Technical Support Engineer - Performance / Platform (24/7 Shifts and weekend rotations)

Posted 5 days ago
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**What you get to do in this role:**
The Performance Support Engineer will be responsible for managing and resolving the most challenging issues for the ServiceNow Technical Support team focusing on Performance and instance availability. This includes being the last point of escalation within the technical support department and mentoring junior team members in the various technologies.
The successful candidate will be able to quickly gain an understanding of the ServiceNow platform. This is a customer-facing role and therefore it requires strong inter-personal skills in addition to strong technical skills. The Performance Support Engineer must able to work outside of normal business hours (evening/weekend shifts, holidays) as needed.
**To be successful in this role you have:**
In order to be successful in this role, we need someone who has:
+ Experience in leveraging or critically thinking about how to integrate AI into work processes, decision-making, or problem-solving. This may include using AI-powered tools, automating workflows, analyzing AI-driven insights, or exploring AI's potential impact on the function or industry.
+ Demonstrated ability to troubleshoot difficult technical issues
+ Strong Experience with relational databases (e.g. MySQL, Oracle)
+ Java experience
+ Experience in one (or more) scripting languages: JavaScript, Python, Perl, Unix Shell, Windows Shell)
+ Advanced Unix/Linux experience
+ Working knowledge of the components in a web applications stack.
+ Experience diagnosing performance degradation (e.g. explain plans, database tuning)
+ Experience working well in a team environment while also being able to work productively while unsupervised
+ Strong personal commitment to quality and customer service
+ Excellent written and verbal communication skills with the ability to clearly articulate solutions to complex technical problems
+ Ability to work with high-value customer administrators and developers
+ Excellent time management skills
+ Consistent ability to work evenings and weekends
+ Understanding of basic networking and system administration
The following additional skills are preferred but not required:
+ Experience writing or debugging Object Oriented code (Java preferred, other relevant technologies ok)
+ Experience working with dynamic HTML components: AJAX, JavaScript, AngularJS, CSS, XML, HTML, XHTML
+ Advanced object oriented programming skills (Java strongly preferred).
+ Deep understanding of JavaScript
+ Demonstrated proficiency with the following Technical Skills
+ Web Services (consuming or providing) (SOAP, REST)
+ Data Extraction Technologies (e.g. JDBC, ODBC)
+ Any bi-directional, automated integration between two systems
+ TCP/IP, Networking knowledge
+ Experience with Splunk
+ Understanding of Simple Network Management Protocol (SNMP)
+ Understanding of remote administration via SSH, SNMP, WMI, Powershell
+ Strong Familiarity with Eclipse IDE
+ A fundamental understanding of ITSM, ITIL, and/or CMDB
**Work Personas**
We approach our distributed world of work with flexibility and trust. Work personas (flexible, remote, or required in office) are categories that are assigned to ServiceNow employees depending on the nature of their work and their assigned work location. Learn more here ( .
**Equal Opportunity Employer**
ServiceNow is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, creed, religion, sex, sexual orientation, national origin or nationality, ancestry, age, disability, gender identity or expression, marital status, veteran status, or any other category protected by law. In addition, all qualified applicants with arrest or conviction records will be considered for employment in accordance with legal requirements.
**Accommodations**
We strive to create an accessible and inclusive experience for all candidates. If you require a reasonable accommodation to complete any part of the application process, or are unable to use this online application and need an alternative method to apply, please contact for assistance.
**Export Control Regulations**
For positions requiring access to controlled technology subject to export control regulations, including the U.S. Export Administration Regulations (EAR), ServiceNow may be required to obtain export control approval from government authorities for certain individuals. All employment is contingent upon ServiceNow obtaining any export license or other approval that may be required by relevant export control authorities.
From Fortune. ©2025 Fortune Media IP Limited. All rights reserved. Used under license.
Software Engineer

Posted 5 days ago
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The Azure CXP PRIMO organization within Azure CXP is responsible for building great products to enable Customer Success at scale. This Software Engineer I position is targeted for someone who is: thrilled about online services, cloud computing, and user experience, loves to work in an agile development team, embraces and solves new technological challenges, deeply passionate about building effective software and continuously improving the development process, independent thinker and working collaboratively in a team environment. As part of this role, you will collaborate closely with multiple teams to deliver key customer solutions and the technology to support them.
You will have ample opportunities to participate in all stages of our engineering lifecycle - from initial research and discovery, quick iteration on promising concepts, solution prototyping, and development, all the way through successful service rollout and Live Site support.
Every day, our customers stake their business and reputation on our cloud. You can help #AzCXP provide our customers with the world-class cloud services they need to succeed.
Microsoft's mission is to empower every person and every organization on the planet to achieve more. As employees we come together with a growth mindset, innovate to empower others, and collaborate to realize our shared goals. Each day we build on our values of respect, integrity, and accountability to create a culture of inclusion where everyone can thrive at work and beyond.
In alignment with our Microsoft values, we are committed to cultivating an inclusive work environment for all employees to positively impact our culture every day.
**Responsibilities**
+ With guidance, learns to create and implement extensible code for a product, service, or feature reusing code as applicable.
+ Works with appropriate stakeholders to determine user requirements for a feature.
+ Collaborates with experienced engineers and mentors to translate ideas from research and design into production-grade systems.
+ Acts as a Designated Responsible Individual (DRI) in monitoring system/product feature/service for degradation, downtime, or interruptions for simple problems, and recommends actions to restore system/product/service by following the playbook.
+ Contribute to the continuous improvement of the team's processes, practices, and culture.
+ Learn and adopt new technologies and frameworks as needed.
**Qualifications**
**Required Qualifications**
+ Bachelor's Degree in Computer Science or related technical field with experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python.
+ You must be legally authorized to work in Ireland to be eligible for this role. (Legally authorised = Has citizenship or has been granted a valid visa or work permit).
**Preferred Qualifications**
+ Bachelor's Degree in Computer Science or related technical field and experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python
+ OR Master's Degree in Computer Science or related technical field and experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python
+ Experience or working knowledge of JavaScript/Node.js/React or another similar web stack.
+ Proficient with high quality Software design, development experience with effective problem solving, and debugging skills.
+ Experience in working on big data pipelines such as Cosmos, Kusto, Azure Data Factory, etc. or similar technologies would be a plus.
+ Experience in working with Azure Dev Ops and SQL or similar technologies would be a plus.
**Other Qualifications**
**Microsoft Cloud Background Check:** This position will be required to pass the Microsoft Cloud Background Check upon hire/transfer and every two years thereafter.
#PRIMOjobs
#CXPjobs
#AzCXP
Microsoft is an equal opportunity employer. Consistent with applicable law, all qualified applicants will receive consideration for employment without regard to age, ancestry, citizenship, color, family or medical care leave, gender identity or expression, genetic information, immigration status, marital status, medical condition, national origin, physical or mental disability, political affiliation, protected veteran or military status, race, ethnicity, religion, sex (including pregnancy), sexual orientation, or any other characteristic protected by applicable local laws, regulations and ordinances. If you need assistance and/or a reasonable accommodation due to a disability during the application process, read more about requesting accommodations ( .
Software Engineer
Posted 1 day ago
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