FIXSOL FIX API Integration & Capital Market Consultation

(Development, Full Stack Connectivity & Enterprise Application Implementation)

Fintech API Integration Overview

In the fast-paced world of capital markets, where milliseconds can define success, seamless and dependable connectivity is essential. FIXSOL is a trusted FIX API Integration partner specializing in consulting, full-stack development and implementation services for the FIX Protocol and other leading APIs such as FIXML, FAST, ITCH and OUCH. We help financial institutions, fintech innovators, and trading firms by streamlining their electronic trading infrastructure. From initial strategy to deployment and ongoing support, our team delivers robust, scalable, and secure connectivity solutions tailored to meet the highest standards of performance and regulatory compliance.

FIXSOL ensures clients stay ahead in an increasingly automated and interconnected trading environment.

FIXSOL FIX and Capital Market API Integration Consultation overview

What We Offer

FIX Protocol Connectivity Services

The FIX (Financial Information eXchange) Protocol is the globally recognized messaging standard for electronic trading across asset classes. At FIXSOL, we deliver comprehensive FIX-based connectivity solutions tailored to your infrastructure. We work with widely used FIX engines, including the open-source QuickFIX and other commercial third-party platforms, to ensure reliable, secure, and scalable integration that meets the dynamic needs of financial institutions and trading environments.

Full-Cycle FIX Consulting & Development

Our services start with understanding your unique business and client requirements. From there, we:

  • Define and draft detailed FIX specifications
  • Design and develop integration layers and UI/UX components
  • Build robust backend and frontend modules
  • Provide implementation and go-live support
  • Offer extended testing, support, and user training

Broad API & Protocol Support

Beyond FIX, we facilitate seamless integration with a wide range of capital market APIs and financial data protocols – such as FIXML, FAST, ITCH, and OUCH – ensuring fast, efficient, and reliable communication across diverse trading platforms and ecosystems. Our solutions enhance straight-through processing, interoperability, and data accuracy across the entire trading lifecycle, including:

  • FIXML (XML-based FIX messaging)
  • FAST (FIX Adapted for STreaming)
  • ITCH/OUCH (Exchange market data
  • & order entry protocols)

Technical & Enterprise Expertise

Our team is equipped to handle:

All major FIX versions: 4.0 to 5.0 SP2

All message types: Pre-Trade, Trade, and Post-Trade

Multiple asset classes: Equities, Derivatives, FX, Fixed Income

End-to-end enterprise application integration

Our FIX API Integration Offerings

API Connectivity Implementation

We provide end-to-end support for your FIX or capital market API implementation—starting from the preparation of detailed technical documentation, followed by full-stack development of integration layers, rigorous testing across environments, and finally seamless deployment into production. Our comprehensive approach ensures that every phase of the API lifecycle is carefully managed to deliver robust, secure, and scalable connectivity.

FIX Connectivity Strategy & Optimization

We assist in evaluating and designing robust connectivity strategies that are closely aligned with your specific business objectives and the dynamic nature of market demands. Our in-depth analysis aims to enhance existing workflows while uncovering key opportunities for automation and measurable performance improvements.

Integration with Key Enterprise Trading Systems:

  • Market Data Systems
  • Order Management Systems (OMS)
  • Risk Management Platforms
  • Electronic & Algorithmic Trading Engines
  • Back Office and Post-Trade Systems
  • Custom Dashboards and Monitoring Interfaces

Why Choose FIXSOL?

Deep domain expertise in capital markets and electronic trading

Proven experience across global clients and trading environments

Full stack and enterprise-grade solution capabilities

Scalable team of specialists for fast and flexible delivery

Cost-effective offshore delivery model without compromising quality

Technology Stack We Use

We work with all major technologies to deliver robust, flexible, and maintainable solutions:

Java

C++

C#/.NET

Python

JavaScript (React, Angular)

SQL/NoSQL Databases

Let’s Connect

Email: sales@fixsol.com 
Request a demo for FIX API Integration for Connectivity