Payments Performance Engineer — NFR & Load Testing

Expleo Group; Nenagh; On-site; EUR 60,000 - 90,000; Full time

Job summary

Expleo Group is seeking two Non‑Functional Test Engineers (Senior and Mid‑Level) to support a payments project. The role is fully onsite in Nenagh, Co. Tipperary, Ireland, and will validate performance, stability, scalability and security across cloud‑native, device‑based and payment ecosystem components.

Responsibilities include defining NFRs, executing load and endurance tests, and performing device‑level testing on Android POS devices to ensure end‑to‑end performance and operational integrity.

Responsibilities

• Performance & Load Testing: Define, refine and validate Non‑Functional Requirements (NFRs).
• Performance & Load Testing: Build and execute load, stress, spike, endurance and soak tests on relevant services and flows (SmartPOS Payment App, TMS 3.0, POS TMC, Nexo channels, downstream pipelines).
• Device‑Level Performance Testing: Validate CPU, memory, battery and thermal behaviour of Android POS devices; assess app responsiveness, startup times, network handover and long‑running stability.

Job description

Expleo Group is seeking two Non‑Functional Test Engineers (Senior and Mid‑Level) to support a payments project. The role is fully onsite in Nenagh, Co. Tipperary, Ireland, and will validate performance, stability, scalability and security across cloud‑native, device‑based and payment ecosystem components.

Responsibilities include defining NFRs, executing load and endurance tests, and performing device‑level testing on Android POS devices to ensure end‑to‑end performance and operational integrity.