Senior Horizon Engineer

As a global market maker, Optiver trades hundreds of thousands of financial instruments on exchanges around the world. By continuously providing quotes – both bids to buy and offers to sell – we play a vital role in the healthy functioning of markets.

What You'll Do

Operate and support production VMware Horizon (Omnissa) environments

Own and execute Horizon platform upgrades (agents, pods, components) with minimal user impact

Troubleshoot and remediate performance, stability, and user‑experience issues using metrics and evidence, not guesswork

Diagnose and resolve authentication and login‑related issues (AD, GPOs, certificates, SSO, MFA integrations)

Design and implement repeatable processes using PowerShell‑first automation, APIs, and infrastructure‑as‑code principles where applicable

Use monitoring and operational data to drive capacity planning, tuning, and remediation decisions

Work closely with infrastructure, networking, and security teams on cross‑domain issues and improvements

Analyse and address resource contention across compute, memory, storage, network, and vGPU where applicable

Participate in remediation initiatives related to performance degradation, login latency, session instability, and user‑impacting incidents

Continuously reduce manual operational effort through scripting, standardisation, and platform improvements

Who You Are

A senior, hands‑on Horizon engineer with 7+ years of real production experience

Comfortable taking ownership of both technical outcomes and operational quality

Experienced in applying automation and infrastructure‑as‑code thinking to improve reliability and consistency (even if not everything is fully codified)

Data‑driven in how you troubleshoot, optimise and justify changes

Execution‑focused, with a strong bias toward fixing root causes rather than symptoms

Calm and methodical under pressure, especially during incidents

Clear communicator who can explain technical decisions using evidence and impact

Who We Are At Optiver, our mission is to constantly improve the market by injecting liquidity, providing accurate pricing, increasing transparency and acting as a stabilising force no matter the market conditions. With a focus on continuous improvement, we participate in the safeguarding of healthy and efficient markets for everyone who participates. As one of the largest market‑making institutions, we are a trusted partner of 70+ exchanges across the globe.

What You'll Get You'll join a culture of collaboration and excellence, where you'll be surrounded by curious thinkers and creative problem solvers. Motivated by a passion for continuous improvement, you'll thrive in a supportive, high‑performing environment alongside talented colleagues, working collectively to tackle the toughest problems in the financial markets.

A performance‑based bonus structure, enabling all of our employees to benefit from our global profit pool.

The opportunity to work alongside best‑in‑class professionals from over 50 different countries.

25 paid vacation days in your first year, increasing to 30 from your second year onwards.

Training opportunities, discounts on health insurance, and fully paid first‑class commuting expenses.

Extensive office perks, including breakfast, lunch and dinner, world‑class barista coffee, in‑house physio and chair massages, organised sports and leisure activities, and Friday afternoon drinks.

Training and continuous learning opportunities, including access to conferences and tech events.

How To Apply Apply directly via the form below. If you have any questions feel free to contact our Recruitment team via our recruitment inquiry form.

Diversity statement Optiver is committed to diversity and inclusion.

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