Sr Full Stack Engineer–Market Data Platforms (Python / gRPC / MongoDB)

Crisil; Greater London; On-site; GBP 110,000 - 150,000; Full time

Job summary

Crisil is seeking a Senior Full Stack Engineer to build and support market data platforms in a Global Markets context. You will work on end-to-end solutions across UI, APIs and data layers to support data analytics, distribution and usage workflows.

The role requires strong full-stack experience, exposure to market data systems and the ability to operate in high‑performance, production‑critical environments. You will collaborate with trading, analytics and data teams to deliver robust solutions.

Qualifications

• Must have strong Python or polyglot backend development skills.
• Experience building and consuming REST APIs and gRPC.
• Hands-on experience with MongoDB, HBase or similar NoSQL databases.
• Proven ability to debug and resolve issues in production environments.
• Ability to own issues end-to-end including RCA and fixes.
• Experience handling large, data‑intensive workloads.

Responsibilities

• Build and enhance market data platforms supporting analytics, distribution and usage workflows.
• Develop APIs and services using modern frameworks (including gRPC) for efficient data access.
• Work with large-scale data stores to manage structured and semi-structured market data.
• Troubleshoot and resolve production issues with root cause analysis and end-to-end fixes.
• Translate business requirements into scalable technical solutions.
• Collaborate with trading, analytics and data teams to deliver robust solutions.

Skills

Python

REST APIs

gRPC

NoSQL Databases

Debugging

End-to-end ownership

Large datasets

Job description

We are looking for aSenior Full Stack Engineerto build and supportmarket data platformswithin a Global Markets environment. This role focuses on developingend-to-end solutions across UI,APIsanddata layers, supporting criticalmarket data analytics,distributionandusage workflows.

The ideal candidate will have strong experience infull-stack development, exposure tomarket datasystemsandthe ability tooperateinhigh-performance, production-critical environments.

Key Responsibilities

• Build and enhancemarket data platformssupporting analytics, distributionandconsumption use cases
• DevelopAPIs and servicesusing modern frameworks (includinggRPC) for efficient data access
• Work withlarge-scale data stores(e.g., MongoDB, HBase) to manage structured and semi-structured market data
• Troubleshoot and resolveproduction issues, performing root cause analysis (RCA) and driving fixes end-to-end
• Translateambiguous business requirementsinto practical, scalable technical solutions
• Collaborate withtrading,analyticsanddata teamsto deliver robust and aligned solutions

Must-Have Skills

• ProficiencyinPython or polyglot backend development
• Experience building and consumingAPIs (REST /gRPC)
• Hands-on experience withNoSQL databasessuch as MongoDB, HBase, or similar
• Strong debugging and problem-solving skills inproduction environments
• Proven ability toown issues end-to-end, including RCA and resolution
• Experience working withlarge datasets and data-intensive applications

Domain Experience (Preferred)

• Strong knowledge of:
• Market data concepts and usage
• Trade lifecycle and data flows
• Risk and pricing dependencies on market data
• Experience working withenterprise trading and market data platforms
• Understanding ofregulatory and compliance considerationsin banking environments

Technical & Data Stack (Preferred)

• Experience with:
• MongoDB, HBase, or similar distributed data stores
• gRPC-based servicesfor high-performance communication
• Familiarity with:
• Integration withanalytics and downstream systems
• Exposure topolyglot architecturesand distributed systems

Good-to-Have

• Experience withmarket data platforms or vendor data systems
• Exposure todata streaming or real-time processing frameworks
• Familiarity withcloud or distributed infrastructure environments
• Prior experience inglobal banking or financial services environments