Internship - Trading Application Support Specialist - Capital Markets

Horizon Software ?

• A Fintech specializing in the design of a platform facilitating various trading activities on electronic financial markets (automation of certain activities (Market Making, Algo Trading...), optimal order management and execution (Agency Trading, Order and Execution Management System…),
• Cutting-edge software deployed on-premise or as SaaS,
• An ambitious product roadmap: Machine Learning, AI, Crypto Currencies, Low Latency…
• A human-sized company (160 employees) where you can make a difference,
• An international company present in 6 countries serving clients across 26 countries,
• A committed company: B-Corp certified, partner of Planet Tech’care, Ethical IA and Lakaa, endowment fund,
• A recognized and award-winning company for its technological expertise: Best Sell-Side EMS (TradingTech Insight Awards Europe 2026), Best Sell-Side OMS (TradingTech Insight Awards Europe 2025) and Best Multi-Asset Trading System of the Year (FOW International Awards 2025).

Your daily life?

As a Trading Application Support Specialist as part of a long-term internship of 4 to 6 months based in Paris or Dubai, you will join a team of 5 people and your main objective will be to successfully ensure the deployment of our solutions to our clients (brokers, investment banks, stock exchanges...) :

• Establish direct contact with the client throughout the incident resolution process and be the guarantor of the correct use of the software at the client site,
• Analyze incidents and define their criticality level, according to the processes and tools provided,
• Handle client requests until their resolution or escalation, recommending workarounds if necessary,
• Deploy and install our solutions or new features at the client site. Train clients (users and IT teams) on our solutions,
• Share client challenges and expectations with the dedicated Client Delivery Manager and Engineering teams.

The pluses of this position:

• Working in a dynamic environment that is technically and functionally stimulating,
• Being part of a talented Client Support team of experts in their field,
• Having the opportunity to work on varied subjects in an international environment,
• Regular events (lunches, afterworks, climate awareness...)
• Human-sized team with local and close management,
• Competitive salary and social benefits,
• A dedicated and personalized onboarding program with a mentor to support you.

What if it were you?

• Graduate with a BAC+5 in computer science, looking to work in a position combining client relations and technical analysis,
• You are looking for a long-term internship, from 4 to 6 months,
• You have an interest in capital markets and trading,
• A sense of customer service, excellent interpersonal and communication skills, and a team spirit are qualities that describe you,
• You have good analytical, synthesis, and writing skills and speak English fluently (spoken and written),
• Basic knowledge of Linux operating systems, system administration, all OO languages, and SDLC experience is a plus.

Horizon is an equal opportunity employer. We promote diversity, multiculturalism, and inclusion.

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