twentyAI
C++ Engineer - TWE46545
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We're Hiring: Two Senior Engineering Roles – Real-Time Data Platform (Financial Services)
Central London | Inside IR35 | 6-month contracts | 2 days/week onsite
Our client is a global financial markets infrastructure and data business, providing real-time market data and trading infrastructure to institutions worldwide. They're expanding their observability and monitoring capability across their Real-Time platform and have two senior contract roles available:
1. Senior Observability Engineer (C++)
Hands-on role combining C++ engineering with technical leadership across the SDLC — building observability (metrics, tracing, logging, profiling, telemetry) for low-latency market data systems.
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Key skills:
- Strong C++ engineering, comfortable embedded with dev teams
- Deep observability engineering expertise
- Customer-experience measurement for latency-sensitive systems
- Experience operating large-scale monitoring/control platforms
- OpenTelemetry, eBPF, GitOps, API-driven automation, CI/CD
- Cloud-native/Kubernetes/distributed systems
- Proven ability to influence teams and drive adoption of standards
- Trading, market-making, exchange connectivity, or market data background a strong plus.
2. Lead Engineer – Synthetic Monitoring & Orchestration
Build orchestration for custom synthetic monitoring agents deployed across hundreds of global sites, aggregating and correlating market data into unified end-to-end views.
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Key skills:
- Hands-on building data-pipeline apps (metrics aggregation, distributed tracing, real-time streaming)
- Latency-sensitive/market data industry experience
- One systems language (C++, Go, Rust) + one scripting/app language (Python, Java, TypeScript)
- Strong analytical mindset for distributed-system behaviour and customer impact
- API-/GitOps-based workflows, config-as-code, CI/CD
- Strong communicator across squads
- Desired: custom synthetic monitoring at scale, OpenTelemetry, Kubernetes at scale.
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