??Do You want to join a company that places people at the heart of its concerns? We are waiting for you atExtiaSince ****, Extia, an IT consulting firm, has been offering a unique approach in its field, combining well-being at work and performance. A successful model: more than **** Extians working in 20 agencies in France and abroad, 1st Great Place To Work® in France. At Extia, we follow a very simple yet effective philosophy: \"First who, then what\" So let's do it together??First, WhoYou are a results-oriented professional with a sharp eye for detail and strong problem-solving skills. You thrive in cross-functional, international teams and are an excellent communicator. Fluent English speaker and available to work in Milan.?Then, WhatWe are seeking for a FIX Protocol Consultant with a deep focus onFIX Protocolfor our client in the financial sector. You will be the guardian of quality for critical swaps trading platforms, ensuring that message exchanges, workflows, and regulatory requirements are executed flawlessly across global markets.Key Responsibilities ???Design, execute, and maintain test plans for FIX protocol workflows (Order Entry, Execution, Allocation, and RFCQ).Verify FIX message formats, sequencing, and business logic to ensure seamless integration with market infrastructure.Identify and document messaging defects, collaborating closely with developers and business analysts to resolve complex connectivity issues.Drive efficiency by automating FIX protocol testing processes and expanding test coverage.Ensure all FIX implementations comply withEU (MTF), UK (MTF), and US (SEF)jurisdictional requirements.Prepare comprehensive test documentation and reports for internal stakeholders and regulatory bodies.Key Requirements ??In-depth understanding of FIX message structures and workflows, ideally within derivatives or swaps trading.Proven experience in software testing or quality assurance within financial services (trading platforms or market infrastruct