We are looking for a mid-to-senior Java developer with FIX API experience to help us integrate FIX API connections for broker platforms such as Interactive Brokers and Lime.You'll play a critical role in developing our live trading infrastructure, which supports low-latency, high-frequency executions at scale.
This is an external role with immediate availability.
You are a good fit if you have experience with : Backend (Languages & Frameworks) :- Java - Spring Boot, Jakarta EE (Core requirement) :- Experience with FIX protocol integration using QuickFIX/J (A must-have) :- Basic Python proficiency - Able to read and collaborate on ML components written in Python (Core requirement) Trading Systems & APIs :- Experience with financial APIs or trading systems (Core requirement) :- Familiarity with order management systems (OMS) is a plus- Understanding of low-latency or high-frequency architecture (bonus) Databases :- PostgreSQL or MySQL (Core requirement) :- Redis or NoSQL systems (bonus) Tools & Others :- Git (Version Control)- RESTful API Design and Integration- Docker (for containerized backend services)- WebSocket communication (for real-time signal processing)- Agile/Scrum methodologies Responsibilities :- Integrate broker APIs using FIX protocol, especially QuickFIX/J- Develop high-performance, low-latency backend components for live trade execution- Build backend support for a proprietary Order Management System (OMS)- Process real-time trading signals received via webhook and WebSocket- Write clean, testable Java code for backend services- Collaborate with Python/ML teams to integrate AI-generated trading strategies- Participate in infrastructure decisions and code reviews- Monitor and improve backend system performance, especially for HFT simulation Certificate Bonus Points :- Prior experience with QuickFIX/J- Experience in financial trading systems or fintech platforms Tags :(Java, Spring Boot, Jakarta EE, FIX API, QuickFIX, Python, Trading Systems, Low Latency, Git, REST API, PostgreSQL, Redis, WebSockets, Backend, OMS, HFT, Remote, Mid Level, Senior Level) Job Type : Contract Education :- Bachelor's (required) Experience :- Java: 2 years (required)- Fix Api: 2 years (required)- Financial APIs or trading systems : 2 years (required) Language :- English (required) Location :- México Libre, Tamps.
(preferred)
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