Site Reliability Engineer
HybridLondonFull-time
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Site Reliability Engineer at Capital Markets Gateway, London (Hybrid). Posted May 29, 2026, last seen on the employer's hiring page Nov 5, 2026. Mentioned in the posting: Azure, Kubernetes.
The Company Capital Markets Gateway LLC (CMG) is a capital markets-focused fintech transforming global equity capital markets (ECM) through data, technology, and connectivity. As the preferred source for ECM analytics and the first network connecting the buy-side and sell-side for ECM workflows, we...
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The Company
Capital Markets Gateway LLC (CMG) is a capital markets-focused fintech transforming global equity capital markets (ECM) through data, technology, and connectivity. As the preferred source for ECM analytics and the first network connecting the buy-side and sell-side for ECM workflows, we are committed to reshaping how capital markets operate. Founded in 2017 by a team of ECM practitioners, CMG has completed three successful fundraising rounds and is backed by a group of the world’s most prestigious financial institutions. The CMG platform is currently relied upon by 25 global investment banks and 135 asset managers representing $40 trillion in AUM. For more information, please visit www.cmgx.io.
The Role
CMG is looking for a Site Reliability Engineer (SRE) with a strong focus on monitoring, observability, and alerting to ensure the reliability, performance, and scalability of our infrastructure and applications. You will be responsible for designing, implementing, and maintaining monitoring solutions to provide visibility into system health and performance, proactively detect anomalies, and reduce incident response time.
Our Engineering Team
The CMG engineering team consists of domain experts who work collaboratively within a culture of cross-domain knowledge sharing. We value engineers who are passionate about modern technologies and best practices.
Our engineers are encouraged to challenge the status quo and are constantly seeking improvement and efficiency in our code-base and platform. CMG engineers are empowered to explore solutions using bleeding edge technologies such as AI and bring recommendations to the table. We are in a period of making impactful engineering decisions.
As part of our process, we believe in taking the time for research and prototyping - this is critical in making the right decisions. Given the experience of our team, we have naturally adopted best practices from local development, through code review and into production rollouts. Besides the standard pull requests, test automation, code coverage tracking, containerization, and one-click deployments we are constantly reviewing these foundational components to develop new best practices.
Responsibilities
Monitoring & Observability
- Design, implement, and maintain monitoring and observability solutions using tools like Prometheus, Grafana Stack (Loki/Grafana/Tempo/Alert Manager), Datadog, and OpenTelemetry.
- Define and implement SLOs, SLIs, and error budgets to measure system reliability.
- Develop and optimize dashboards, alerts, and reports for system performance and business metrics.
Alerting & Incident Management
- Design actionable alerting strategies to minimize noise and improve MTTR.
- Integrate alerting systems with Jira.
- Establish and refine runbooks for on-call teams to handle alerts efficiently.
- Empower teams to ensure observability coverage and incident response practices.
Performance Optimization
- Analyze system performance metrics, identify bottlenecks, and implement optimizations to improve system efficiency, scalability, and cost-effectiveness.
- Help conduct load testing and capacity planning to ensure systems can handle peak traffic loads.
Automation and Tooling
- Identify opportunities for automation and develop tools to streamline operational processes, such as fail-over, configuration management, and monitoring.
- Implement monitoring and alerting systems within automations to detect and resolve issues proactively.
Collaboration and Communication
- Collaborate closely with cross-functional teams, including software engineers, operations, and infrastructure teams, to understand system requirements, provide technical guidance, and drive solutions.
- Communicate effectively to stakeholders about system changes, incidents, and improvements.
- Foment and spread SRE principles and practices across company.
Qualifications
- Proven experience as a Site Reliability Engineer or similar role.
- Proficiency in logging, metrics, and tracing frameworks (DataDog, Loki, Prometheus, OpenTelemetry).
- Experience with cloud platforms (Azure preferred) and infrastructure-as-code tools (e.g., Terraform).
- Strong programming and scripting skills (Python, Bash).
- Proficiency in containerization technologies and orchestration tools (Docker, Kubernetes).
- Understandingof Linux-based systems, networking, and security principles related to containerized applications.
- Strong problem-solving and troubleshooting skills, with a passion for identifying and resolving complex technical issues.
- Excellent communication and collaboration abilities.
- Ability to thrive in a fast-paced, constantly evolving environment.
- Experience with PostgreSQL monitoring and optimization (Optional/Nice to have).
If you're passionate about building resilient financial systems, optimizing observability at scale, and solving real-world reliability challenges in capital markets, we’d love to have you on our team!
Our Tech Stack
- Azure as an infrastructure provider. We are reviewing secondary cloud options.
- Docker + Kubernetes for microservice orchestration using Istio service mesh.
- PostgreSQL for relational db, ElasticSearch for indexing, Redis for caching.
- DataDog, Grafana and OpenTelemetry for observability.
- GitHub for our Version Control and CI (with our own runners).
- CD: Harness and FluxCD.
- Terraform and Terragrunt as IaaC.
- Python and bash for scripting infrastructure.
- React - We’re all in on React – we maintain multiple single-page React apps.
- TypeScript – 99% of our codebase is TypeScript.
- Latest .NET version for our backend services.
- GraphQL - Our standard for API communication is GraphQL served by our DotNet Back-End.
Our Values
- We innovate with purpose
- We focus on outcomes vs. output
- We believe diverse and inclusive teams fuel innovation
- We are humble yet candid
- We do right by the customer
What We Offer
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Equity
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Unlimited PTO (28 days including bank holidays + unlimited additional paid leave)
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Comprehensive benefits program managed by Globalization Partners
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Premium life and income protection
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Top private medical and dental insurance
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Employee Assistance Program (EAP)
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Pension contributions
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Hybrid work environment (initially remote until office setup is complete)
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Education reimbursement
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Continuous learning opportunities
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Employee referral bonus
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Parental leave
CMG embraces our ongoing commitment to building a culture reflecting the people, perspectives, and passions it represents. We will accept nothing less than equity, inclusion, and belonging for all. With the only constant in life being change, we will always listen, learn, and improve for the betterment of our teams, customers, and communities. CMG is proud to be an Equal Opportunity Employer.
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