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Horizon Trading Solutions

Develops low-latency, multi-asset trading systems

Trading Application Support Specialist

Implementation & Technical Account ManagementUpdated on Nov 9
Full-timeParis, France€40k - €44k /yrIn-person

About the Job

Requirements

  • A Bachelor's or Master's degree in Computer Science or Software Engineering, with a strong understanding of Information Systems and Technology.
  • At least 1–2 years of experience in Client Service or Finance, particularly in trading; experience in Fintech or Capital Markets is preferred.
  • Strong problem-solving and analytical skills, including effective troubleshooting of system issues.
  • Strong customer service skills and the ability to provide professional, compassionate, effective assistance focused on service excellence and satisfaction.
  • Project management abilities.
  • A keen interest in financial trading support environments and electronic trading solutions, a positive and dynamic attitude, and the ability to thrive under pressure.
  • Fluency in English and French.
  • Knowledge of Linux and a basic understanding of SQL/databases, object-oriented languages such as Java, APIs, networks, and operating systems.
  • Experience using at least one monitoring tool, such as Datadog.

Responsibilities

  • Analyze and troubleshoot issues or incidents; help customers resolve issues, explain usage, debug failures, identify problems, implement workarounds, enhance performance, improve security, and determine root causes.
  • Define each issue's severity and area, and ensure accurate classification and prioritization.
  • Resolve tickets according to the required knowledge and proper process, escalating when necessary for timely resolution.
  • Serve as the primary point of contact for customers, addressing requests through resolution or escalation.
  • Keep customers updated on ticket-resolution progress, including clear communication about steps and timing.
  • Write comprehensive documentation about current issues for customers to improve their knowledge and understanding (KDB).
  • Deploy products at customer sites, ensuring seamless integration and functionality.
  • Provide training to clients, including end users and IT teams, to optimize product use and proficiency.
  • Support local and foreign customers in an international, multinational-client context.

Desired Qualifications

  • Knowledge of the FIX protocol.
  • Experience in financial application support and software implementation.
  • Experience in Fintech or Capital Markets.

About the Company

Horizon Trading Solutions

Develops low-latency, multi-asset trading systems

Horizon Trading Solutions provides multi-asset, low-latency trading technology for institutions and trading firms, operating on exchanges and off-exchange venues. Its platform supports continuous and RFQ-based market making, auto quoting, hedging, and built-in pricing and volatility models, including anti-arbitrage features. Clients can customize their own pricing, hedging, and trading-optimization logic within a high-performance framework that handles high-volume execution. The company aims to lead in trading-system development by combining strong technology with human creativity to adapt to evolving market opportunities.

Company size
51-200
Company stage
Not listed
Total funding
Not listed
Headquarters
Paris, France
Founded
1998

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