FIX API Specialist - Contract

Marketfinder; Australia; On-site; AUD 120,000 - 150,000; Full time

Job summary

A leading global fintech firm based in Sydney is seeking an experienced FIX API Specialist for a short-term engagement. The ideal candidate will have 5-10+ years of deep FIX protocol experience and a strong server-side FIX integration background. Responsibilities include conducting a full assessment of the current FIX setup, resolving critical FIX problems, and delivering documentation under tight timelines. Immediate availability is a must.

Qualifications

• 5-10+ years of deep FIX protocol experience (session management, message flows).
• Strong server-side or exchange-side FIX integration background.
• Ability to deliver documentation under tight timelines.

Responsibilities

• Conduct a full assessment and gap analysis of the current server-side FIX setup.
• Identify and document issues; deliver a concise FIX Assessment Report.
• Resolve critical FIX problems and validate fixes through structured testing.
• Update FIX specifications and create a Troubleshooting Playbook.
• (Optional) Provide internal training and deliver a clear handover document.

Skills

FIX protocol experience

Server-side FIX integration

Troubleshooting

High-quality documentation

Job description

Our client, a leading global fintech and online trading firm, is seeking an experienced FIX API Specialist for a short‑term engagement to strengthen their FIX connectivity and support an upcoming handover to internal teams. This role is ideal for someone based in APAC who can start immediately.

Key Responsibilities

• Conduct a full assessment and gap analysis of the current server‑side FIX setup
• Identify and document issues; deliver a concise FIX Assessment Report
• Resolve critical FIX problems and validate fixes through structured testing
• Update FIX specifications and create a Troubleshooting Playbook
• (Optional) Provide internal training and deliver a clear handover document

Ideal Background

• 5‑10+ years of deep FIX protocol experience (session management, message flows, troubleshooting)
• Strong server‑side or exchange‑side FIX integration background
• Crypto exchange experience (highly desirable)
• Ability to deliver rapid, high‑quality documentation under tight timelines

If you’re immediately available and interested in supporting a high‑impact technical engagement, please apply or contact us for more information.

Sydney, New South Wales, Australia