LS
LSEG

Senior Software Engineer - Real Time Product Engineering

Location: USA-St. Louis-795 Office Pkwy · Category: Engineering & Development · Seniority: Senior · Posted: October 8, 2026 · Verified: Oct 8, 2026

Role Overview & Description

Designs and implements low-latency software for real-time financial data processing, focusing on performance and reliability. Requires expertise in real-time systems and low-latency programming.
Hiring Telemetry · Expansion Signal

Track team expansion and market signals for LSEG

Polaris7 monitors open roles, strategic market movements, and M&A developments in real time. Get automated intelligence briefings on LSEG and benchmark against direct competitors.

Source & Transparency: This position was structured directly from the publicly accessible career portal of LSEG. Details on the employer’s original job posting are authoritative. Polaris7 charges no placement fees and conducts no candidate screening.
Company IntelligenceVerified Profile
LS

Financial data, indices and market infrastructure for institutions.

Similar Positions in DACH

Related roles across advertising, media, and data

Verified 3w agoWaltham, Massachusetts, United StatesEngineering & DevelopmentMid-Level

This role focuses on developing real-time software for defense systems, ensuring low-latency and high-reliability performance. The engineer will work on embedded systems, sensor integration, and mission-critical applications, requiring expertise in real-time operating systems and performance optimization.

Re-check scheduledMulti-Location (3 Locations)Engineering & DevelopmentSenior

This Senior Software Engineer on the Real-Time Ad Serving team designs and owns the business logic for programmatic advertising, including ad selection, targeting, frequency capping, and budget pacing. The role primarily involves working in Lua on a C++ high-performance server framework, handling 200K+ requests per second with strict latency requirements. The engineer will collaborate with Product, participate in on-call rotation, and contribute to architecture discussions, with experience in ad tech (RTB, DSP/SSP) being a plus.

Re-check scheduledMulti-Location (2 Locations)Engineering & DevelopmentLead

This role leads the design, build, and operation of the Zeta Marketing Platform's real-time events pipeline, which ingests and processes high-volume event data. The engineer will own the architecture for pipeline components, mentor team members, and partner with product and data teams to meet latency and throughput SLAs. The position requires 8-10 years of experience with event streaming (Kafka), Python services, and AWS cloud infrastructure.

Re-check scheduledBroomfield, Colorado, United States; Fort Collins, Colorado, United StatesEngineering & DevelopmentSenior

Designs and implements high-performance C++ software for mission-critical defense applications, optimizing for low latency and reliability. Collaborates with cross-functional teams to integrate systems across hardware and software stacks.

More Positions at LSEG

3 more open roles

Verified 4w ago2 LocationsCustomer Success & Client OperationsSenior

Provides advanced customer support, handling complex inquiries and ensuring high satisfaction. Requires deep product knowledge and problem-solving skills to resolve issues efficiently.

Verified 4w agoNew York, United StatesData, AI & AnalyticsManager

Leads the development of analytics solutions and data products. Manages analytics teams, designs data models, and delivers insights to support business decisions.

Verified 4w agoIND-Bangalore-TowerE,RMZ InfinCustomer Success & Client OperationsLead

Leads a service and quality team, overseeing service delivery standards and quality assurance processes. Focuses on team management, performance metrics, and continuous improvement initiatives.