The Performance Engineering Lead defines performance strategies, ensures scalability and reliability in engineering processes, and mentors teams on best practices. They design and execute performance tests and integrate performance checks in CI/CD workflows, while reporting findings to stakeholders.
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
About Datalex
Datalex is a market leader in airline e-commerce solutions. Datalex's Stellex product suite, launched in 2024, gives airlines the tools they need to drive revenue and profit as digital retailers. Datalex has a strong track record working with some of the most innovative airline brands worldwide, such as Air China, Air Macau, Air Transat, Aer Lingus, easyJet, and Edelweiss. The Group is headquartered in Dublin, Ireland, and maintains offices across Europe, the Americas, and Asia. Learn more at www.datalex.com
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.
- 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.
- 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.
- 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.
- 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.
- Experience with APM and observability tooling such as Dynatrace, New Relic, or AppDynamics.
- Knowledge of performance modelling, capacity planning, and forecasting.
About Datalex
Datalex is a market leader in airline e-commerce solutions. Datalex's Stellex product suite, launched in 2024, gives airlines the tools they need to drive revenue and profit as digital retailers. Datalex has a strong track record working with some of the most innovative airline brands worldwide, such as Air China, Air Macau, Air Transat, Aer Lingus, easyJet, and Edelweiss. The Group is headquartered in Dublin, Ireland, and maintains offices across Europe, the Americas, and Asia. Learn more at www.datalex.com
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