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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