FIX Connectivity Engineer | Experienced Hire

Susquehanna International Group is seeking a FIX Connectivity Engineer to support enhance and expand electronic trading connectivity for our global client facing brokerage trading business. This role will focus on onboarding and maintaining FIX-based client broker venue OMS/EMS and market connectivity across equities options FX or other asset classes.

The ideal candidate has strong hands-on experience with the FIX protocol trading workflows order management systems certification testing and production support in a brokerage / electronic trading environment. This person will work closely with trading desks clients exchanges vendors product teams infrastructure compliance and application development teams to deliver reliable and well-controlled connectivity solutions.

In this role you will:

• Implement configure test and support FIX connectivity for clients counterparties exchanges ATSs ECNs brokers OMS/EMS platforms and trading vendors.
• Manage full connectivity onboarding lifecycle including requirements gathering session setup message specification review certification production rollout and post-go-live support.
• Analyze FIX messages across order entry cancel/replace execution reports drop copy allocations and administrative workflows.
• Troubleshoot production issues involving order flow rejects sequence gaps session disconnects latency routing behavior and trade reporting discrepancies.
• Maintain and enhance FIX session configurations routing rules symbol handling account mappings entitlement controls and message transformations.
• Partner with developers and infrastructure teams to improve connectivity platforms monitoring alerting resiliency and operational tooling.
• Work with business stakeholders to understand trading workflows and translate requirements into technical connectivity specifications.
• Participate in exchange broker and vendor certification testing.
• Support incident response root-cause analysis and remediation for connectivity-related issues.
• Provide occasional off-hours support for production releases venue testing market events or critical incidents.

Required Qualifications:

• 3 years of experience supporting or implementing FIX connectivity in a brokerage trading firm exchange fintech OMS/EMS vendor or financial technology environment.
• Strong understanding of the FIX protocol including session-level and application-level messages.
• Familiarity with electronic trading concepts order lifecycle routing executions allocations and trade capture.
• Hands-on experience troubleshooting FIX sessions using logs message viewers network tools or trading support platforms.
• Experience working in production support environments with change management incident management and release controls.
• Strong analytical communication and documentation skills.
• Ability to work directly with clients vendors traders developers and operations teams.

Preferred Qualifications:

• Experience with SQL scripting or reporting tools.
• Familiarity with OMS/EMS platforms such as Bloomberg EMSX Fidessa FlexTrade Charles River Eze Portware or similar systems.
• Knowledge of exchange or market center connectivity including order routing and drop copy.
• Experience participating in client-facing technical onboarding or production readiness reviews.
• Experience dealing with order routing in a global multi-system environment.
• Experience working in a Linux environment.

Ideal Candidate Will Have:

• Strong problem-solving under time-sensitive market conditions.
• Detail-oriented approach to protocol specifications message flows and production controls.
• Clear communication with both technical and non-technical stakeholders.
• Ownership mindset for production stability and client experience.
• Ability to manage multiple onboarding certification and support priorities simultaneously where priorities may shift dynamically due to business need

Visa sponsorship for work authorization is not available for this position now or in the future.

About Susquehanna:

What we do:

We are experts in trading essentially all listed financial products and asset classes with a focus on derivatives trading. Through market making and market taking we handle millions of trading transactions around the world every day providing liquidity and ensuring competitive prices for buyers and sellers. While our presence in the market is broad our trading desks are highly specialized allowing for a deep understanding of unique drivers of each asset class.

If youre a recruiting agency and want to partner with us please reach out to Any resume or referral submitted in the absence of a signed agreement will not be eligible for an agency fee.

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