Market Data Engineer

Trading Technologies

. Integrate and support market data feeds from ICE, Refinitiv, and other providers .

Posted 11/2/2026full-timeLondon • United KingdomSeniorLead💰 $175,000 - $200,000 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in integrating and supporting market data feeds, particularly from ICE and Refinitiv, while ensuring data accuracy and reliability across various financial instruments. Proficient in C#, SQL, Snowflake, and AWS, with a strong focus on troubleshooting and optimizing data processing workflows.

Highest-signal resume keywords

C# DevelopmentSQL DevelopmentSnowflake ExperienceAWS Cloud ServicesMarket Data Integration

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

C#SQLSnowflakeAWSData ProcessingMarket Data AnalysisDebuggingData Quality ControlsPerformance TuningRoot-Cause Analysis

Soft Skills

Analytical SkillsProblem-SolvingCollaborationIndependenceAttention to Detail

Tools & Technologies

Microsoft SQL ServerApache AirflowGitCI/CDAutomated Deployment

Certifications & Qualifications

Snowflake CertificationAWS Certification

Industry Keywords

EquitiesFuturesOptionsFXFixed IncomeTrade Cost AnalysisMarket Data FeedsReference DataEnd-of-Day PricingIntraday Pricing

Tech Stack

Tools & technologies

AirflowApacheAWSCloudMS SQL ServerPythonSnowflakeSQL

About the role

Key responsibilities & impact

Integrate and support market data feeds from ICE, Refinitiv, and other providers
Support market data across Equities, Futures, Options, FX, and Fixed Income
Develop and maintain instrument mappings, security and contract identifiers, exchange and venue mappings, currency attributes, and other reference data
Support end-of-day pricing, intraday pricing, historical data, and data quality controls
Develop, enhance, and maintain C# applications that connect to vendors, process market data, and deliver data to downstream systems
Process intraday trades and quotes, including Level 1 top-of-book and Level 2 market depth data where supported
Troubleshoot feed interruptions, missing or delayed messages, data gaps, processing bottlenecks, and recovery scenarios
Improve application stability, throughput, and resilience
Write and optimize SQL queries, stored procedures, and data processing workflows
Develop and support Snowflake ingestion, transformations, validation, reconciliation, and analytical workflows
Use Python and scripting tools to automate validation, monitoring, reconciliation, and operational tasks
Investigate market data discrepancies, perform root-cause analysis, implement corrective actions, and support critical production processing and SLAs
Modernize market data processing and migrate workflows from SQL Server to Snowflake and AWS infrastructure
Collaborate with TCA engineers, product teams, and other stakeholders
Ensure market data is accurate, complete, timely, reliable, and available for downstream TCA and analytics applications

Requirements

What you’ll need

Bachelor’s degree in Computer Science, Data Engineering, or a related field
At least 8 to 10+ years of relevant professional experience in software engineering and financial market data systems
Strong knowledge of Equities, Futures, Options, FX, and Fixed Income market data
Hands-on experience with Snowflake and AWS Cloud services
Strong SQL development experience
Strong Microsoft SQL Server experience, including complex queries, stored procedures, performance tuning, and troubleshooting
Strong debugging, analytical, and problem-solving skills
Understanding of reference data, instrument identifiers, symbology, exchange and venue mappings, end-of-day pricing, and intraday pricing
Practical experience integrating external market data feeds, preferably ICE, Refinitiv/LSEG, or comparable vendors
Hands-on C# development experience building or maintaining feed handlers, market data applications, or real-time data processing systems
Ability to independently troubleshoot production issues, own technical deliverables, and work with minimal supervision
Preferred: familiarity with vendor APIs, feed protocols, entitlement management, and vendor-specific message formats
Preferred: experience with high-volume market data, tick data, trade and quote normalization, and market data quality controls
Preferred: experience with Snowflake, AWS/S3, Apache Airflow or similar orchestration tools
Preferred: experience with SQL Server performance tuning and large-scale data processing
Preferred: experience supporting Trade Cost Analysis (TCA), trading analytics, or financial market data platforms
Preferred: experience with Git, CI/CD, Liquibase, automated deployment, data quality, reconciliation, and data governance
Snowflake or AWS certification preferred
Ability to use AI-assisted development tools while independently validating generated code for correctness, security, performance, and maintainability

Benefits

Comp & perks

Medical, Dental, and Vision insurance
Flexible Spending Accounts (FSA) & Health Savings Accounts (HSA)
401(k) retirement plan
Pre-tax transit and parking benefits
Hybrid work: three days in-office and two remote days per week
22 days of Paid Time Off (PTO) per year, with rollover option
One dedicated volunteering day per year
Two professional development days per year
Additional PTO day during milestone anniversary years
Paid holidays with early dismissal
Generous parental leave for all parents, including adoptive parents
Budget for tech accessories, monitors, headphones, keyboards, and other office equipment
Backup child and pet care, plus tutoring services
Milestone anniversary bonuses
Stipend and subsidy contributions toward personally-owned cell phones
Gym membership and health/wellness initiative contributions
Discounted healthcare premiums
Healthy meal delivery program subsidies