Performance Engineering Lead - Dublin

Location

Onsite / Hybrid

Team Model

Hands on technical leader responsible for defining performance and scalability strategy while actively designing, executing, and embedding performance engineering practices across multiple cross functional engineering teams.

Reports to

CTO / VP of Engineering

The Role

We are seeking a Performance Engineering Lead to own and drive the performance, scalability, and reliability engineering strategy for our platform. This role sits within Engineering and works closely with architects, developers, SRE/DevOps, and product teams to ensure our systems meet current and future performance demands.

Key Responsibilities Performance Strategy & Leadership

• Define and maintain the performance engineering strategy, frameworks, and standards across the platform.
• Partner with architects and senior engineers to ensure performance and scalability requirements are captured early in the design process.
• Lead, mentor, and guide engineers on performance best practices, approaches, and tooling.

Test Design, Execution & Analysis

• Design and execute load, stress, endurance, and scalability tests across critical systems.
• Build, maintain, and evolve performance test scripts using industry standard tools.
• Conduct end to end performance analysis, identify bottlenecks, and recommend optimisations.

Engineering Collaboration & Lifecycle Integration

• Embed performance considerations throughout the SDLC, from design through to production.
• Integrate performance testing and checks into CI/CD pipelines.
• Work with engineering and SRE/DevOps teams to improve platform scalability, resilience, and reliability.

Reporting & Stakeholder Communication

• Produce clear, actionable performance reports and dashboards.
• Communicate risks, findings, and recommendations to technical and non technical stakeholders, both internal and external to Datalex.
• Establish and maintain measurable performance benchmarks and service thresholds.

Required Experience & Skills

• 8+ years' experience in performance engineering, including leadership or senior ownership responsibilities.
• Strong hands on experience with performance testing tools such as JMeter, LoadRunner, Gatling, or BlazeMeter.
• Solid understanding of microservices architectures, APIs, and cloud based infrastructures.
• Experience integrating performance testing into CI/CD pipelines and modern delivery workflows.

Desirable Qualifications

• Experience with APM and observability tooling such as Dynatrace, New Relic, or AppDynamics.
• Knowledge of performance modelling, capacity planning, and forecasting.