Trading Tech: Client Onboarding & Support Engineer

Marlin Selection; Greater London; On-site; GBP 60,000 - 90,000; Full time

Benefits offered by this job

Office lunches provided

Job summary

Marlin Selection represents a leading financial technology provider hiring an Application Support Engineer to join the customer-facing onboarding team in London. You will be first point of contact for operational and technical issues, assisting onboarding from setup to go-live and ongoing support.

You’ll tailor your communication to institutional and retail clients, triage issues across network, OS and application layers, and build deep expertise in digital assets within a fast-moving trading

Qualifications

• Experience 2–5 years supporting clients in financial services.
• Experience onboarding institutional and retail clients.
• Knowledge of FIX protocol.
• Basic TCP/IP networking knowledge.
• Basic SQL (PostgreSQL, MySQL).
• Proficient Windows power-user.
• Excellent written and verbal communication.
• Ability to manage multiple client conversations under pressure.

Responsibilities

• Deliver customer support via email, phone and live chat in line with SLAs for institutional and retail clients.
• Support and onboard new institutional and retail clients through implementation, configuration, testing and go-live.
• Act as technical first responder, triaging issues across network, OS and application layers, prioritising and escalating by severity.
• Analyse logs, FIX messages and other primary sources to identify root causes of trading and quoting issues.
• Configure client setups, including liquidity provider details, order routing, trading platform connectivity and prime broker give-up arrangements.
• Manage upgrades and migrations of the platform and related software, performing full system check-outs on completion.
• Tailor communication and documentation to the client’s technical level, from experienced institutions to retail users.
• Build subject matter expertise and act as the team’s go-to person.

Skills

Client support

Onboarding experience

FIX protocol

Networking basics

SQL databases

Windows proficiency

Strong communication

Multi-client handling

Job description

Marlin Selection represents a leading financial technology provider hiring an Application Support Engineer to join the customer-facing onboarding team in London. You will be first point of contact for operational and technical issues, assisting onboarding from setup to go-live and ongoing support.

You’ll tailor your communication to institutional and retail clients, triage issues across network, OS and application layers, and build deep expertise in digital assets within a fast-moving trading