Performance Test Lead

Principal Performance Engineer | Build the Future of Performance Engineering

Location: Fully Remote (UK & Ireland)

Type: Full-Time | Permanent

Industry: FinTech / Payments

Salary: £80,000 or €80,000 + Bonus

Level: Principal | Hands-On | Strategic Leadership

Do you want to own, shape, and lead a performance engineering function at scale?

ViVA Tech Talent is hiring on behalf of a high-growth FinTech company. They’re looking for a Principal Performance Engineer to define and deliver performance testing environments, tooling, and strategy across a hybrid infrastructure. This is a chance to shape something foundational from the ground up.

Why You’ll Love This Role

Full Ownership – Define and deliver the performance strategy across the business.

Strategic Influence – Guide performance direction across engineering and operations.

Real-World Simulation – Architect environments to replicate production traffic at scale.

Visible Impact – Your work directly supports key systems used by thousands.

Empowered Culture – Work within a curious, outcomes-driven engineering team.

What You’ll Be Doing

• Lead the design and implementation of performance testing strategy across systems and teams.
• Architect realistic test environments for load, stress, and soak testing.
• Work with Engineering and DevOps to build performance into the development lifecycle.
• Translate real user activity into scalable test simulations.
• Build tooling to support system modelling and load generation.
• Tune infrastructure and applications to support high availability and scalability.
• Drive early performance analysis and risk mitigation across product teams.
• Provide visibility of testing results and performance trends to technical leadership.

What You Bring

• 8–10 years of performance engineering experience within large-scale tech environments.
• 5+ years in a senior or lead-level role.
• Deep knowledge of performance testing tools (e.g. JMeter, BlazeMeter, K6, Kibana).
• Strong experience testing APIs, UIs, services, and enterprise databases (e.g. Oracle, PostgreSQL).
• Ability to design replica environments that mimic production performance.
• Familiarity with IaC and modern DevOps practices.
• Skilled at identifying bottlenecks across application and infrastructure layers.
• A pragmatic, strategic mindset with a focus on systems that scale.

What You’ll Get

£75,000 or €90,000 + performance bonus

Unlimited holiday policy

Fully remote with home setup & broadband budget

Premium equipment & dual-monitor setup

Annual learning budget + tuition reimbursement

Inclusive culture with healthcare, pension & wellbeing support

A tech-first environment that values ownership, autonomy, and delivery

Ready to Drive Performance at Scale?

Be the architect behind a new performance capability at one of the most forward-thinking FinTechs.

Apply via LinkedIn – don’t miss this unique opportunity!