12 of 12 Part-Time Site Reliability Engineering Jobs in London

Job Title: Site Reliability Engineer (SRE) – High-Frequency Trading Infrastructure Location: Onsite – New York City, London, or Singapore Our Client, a leading high-frequency trading firm, is seeking a Site Reliability Engineer (SRE) to architect and build next-generation production tools and infrastructure for their ultra … , scalability, and performance in one of the most competitive and technologically advanced industries. About the Role This opportunity is ideal for an experienced SRE who thrives in production-critical environments. The successful candidate will join a high-caliber team of engineers and work on automating, scaling, and securing systems … that drive global trading operations. Key Responsibilities Design and develop scalable production tools for deployment, monitoring, and infrastructure automation. Ensure the reliability and efficiency of trading systems through proactive automation and tooling. Collaborate with developers and traders to support the live trading environment. Manage and optimize configuration and deployment More ❯

Site Reliability Engineer – FinTech/Global Payments – London HQ/Remote First Salary - £80,000/£85,000 + Bonus Location - This UK-based team offers a fully remote working option, with a headquarters in Central London. In this role, you will be joining a leading SaaS FinTech … market. The business aims to scale its platform significantly over the next few years to support a growing international client base. Responsibilities Champion core SRE practices: define SLIs/SLOs/SLAs, reduce toil through automation, and plan for Disaster Recovery. Refine KPIs to support data-driven decisions around reliability … teams to build resilient, observable, and maintainable features. Promote DevOps culture by leading knowledge-sharing sessions and supporting issue resolution. Skills Strong grounding in SRE principles and operational best practices. Proficient with observability tools (Prometheus, Grafana, OTEL, Cloudwatch) and telemetry pipelines. Solid programming skills in Python and/or Go More ❯

Site Reliability Engineer – FinTech/Global Payments – London HQ/Remote First Salary - £80,000/£85,000 + Bonus Location - This UK-based team offers a fully remote working option, with a headquarters in Central London. In this role, you will be joining a leading SaaS FinTech … market. The business aims to scale its platform significantly over the next few years to support a growing international client base. Responsibilities Champion core SRE practices: define SLIs/SLOs/SLAs, reduce toil through automation, and plan for Disaster Recovery. Refine KPIs to support data-driven decisions around reliability … teams to build resilient, observable, and maintainable features. Promote DevOps culture by leading knowledge-sharing sessions and supporting issue resolution. Skills Strong grounding in SRE principles and operational best practices. Proficient with observability tools (Prometheus, Grafana, OTEL, Cloudwatch) and telemetry pipelines. Solid programming skills in Python and/or Go More ❯

Site Reliability Engineer – FinTech/Global Payments – London HQ/Remote First Salary - £80,000/£85,000 + Bonus Location - This UK-based team offers a fully remote working option, with a headquarters in Central London. In this role, you will be joining a leading SaaS FinTech … market. The business aims to scale its platform significantly over the next few years to support a growing international client base. Responsibilities Champion core SRE practices: define SLIs/SLOs/SLAs, reduce toil through automation, and plan for Disaster Recovery. Refine KPIs to support data-driven decisions around reliability … teams to build resilient, observable, and maintainable features. Promote DevOps culture by leading knowledge-sharing sessions and supporting issue resolution. Skills Strong grounding in SRE principles and operational best practices. Proficient with observability tools (Prometheus, Grafana, OTEL, Cloudwatch) and telemetry pipelines. Solid programming skills in Python and/or Go More ❯

Cloud Platform Engineer As part of Nationwide’s exciting and growing team of Cloud Platform engineers, you’ll have a SRE (Site Reliability Engineer) mindset with the ability to act like a Developer and think like a Systems Operator. We invest in our people to ensure we create … responsible for the delivery of Cloud technical solutions for assigned missions alongside providing consultancy and support services as required. As part of the Cloud Engineering team, we are looking for talented people to help us achieve our goals. We are happy to consider flexible working approaches to help you … and exceptions that will affect implementation of technical artefacts. Share knowledge with peers to contribute to the skills growth of knowledge within Nationwide’s Engineering COE. Lead and influence architectural design decisions of network solutions, features and fixes, ensuring robust connectivity between on-premise and within cloud environments. Oversee More ❯

client is a pioneering UK-based fintech company delivering cutting-edge FX and trading solutions to global clients. With a strong foundation in software engineering and a culture built on technical excellence, they are now entering an exciting phase of platform redevelopment - with DevOps playing a critical role in … drive innovation across our low-latency, event-driven systems. You will work closely with development, infrastructure, and business teams to enhance our platform's reliability, scalability, and automation. What You’ll Be Doing Leading the development and optimisation of our CI/CD pipeline using GitLab. Managing and maintaining … Kubernetes clusters across multiple environments (Linux, Windows, macOS). Coaching and mentoring engineering teams on DevOps best practices and tooling. Improving system monitoring, incident detection, and resolution processes. Building custom tools or integrating third-party solutions to strengthen our DevOps infrastructure. What We’re Looking For 3+ years’ experience More ❯

edge technology and data systems. The team is dedicated to building scalable, reliable, and efficient systems that support critical financial decision-making. As an SRE, you will play a pivotal role in ensuring the stability and performance of the Enterprise Data and Reference Data systems in a fast-paced, mission … critical environment. Job Overview: In this role, you will be responsible for creating automated solutions, troubleshooting production issues, and ensuring the reliability and performance of critical data systems that drive the hedge fund's trading strategies. You will collaborate with cross-functional teams to optimise system performance, perform root More ❯

guide the modernization of core systems and digital services by leveraging cloud-native technologies, API management, and secure identity platforms. You will collaborate with engineering, DevOps, infrastructure, product, and security teams to define platform architecture, enforce security and compliance through IDAM, and drive innovations aligned with long-term digital … infrastructure provisioning and service orchestration. Lead architecture reviews and governance processes to align solutions with enterprise standards, cost efficiency goals, and regulatory expectations. Coach engineering teams on architectural best practices, modern tooling, and cloud-native principles. Required Qualifications 8+ years of experience in IT with at least 4 years …/GCP. Experience implementing Zero Trust architecture and secure API ecosystems. Exposure to Open Banking, BIAN frameworks, or ISO 20022 messaging standards. Understanding of SRE, platform cost optimization, and resilience engineering Familiarity with agile architecture practices in SAFe, TOGAF, or Spotify model environments. About us Ascendion is a Global More ❯

implementation ect is essential) Strong hybrid or multi cloud experience (AWS/Azure/GCP) Some experience supporting bids/new business/billing SRE experience – (Minimum an understanding of) Eligibility for security clearance is essential Key responsibilities Assess, define, and implement tailored DevOps capabilities to drive innovation, increase agility More ❯

distributed systems and APIs. ● Manage and optimize CI/CD pipelines, ensuring rapid and reliable code delivery across multiple environments. ● Work closely with the engineering team to support microservices architecture, with focus on latency-sensitive and high-availability services. ● Monitor system performance, conduct root cause analysis, and implement observability … best practices (metrics, logging, tracing). ● Harden infrastructure and deployments with infrastructure as code (Terraform/CDK/CloudFormation). ● Lead incident response, system reliability efforts, and infrastructure scalability initiatives. ● Manage messaging queues (e.g., Kafka, RabbitMQ) and optimize for low-latency event handling and throughput. ● Contribute to evolving our … Bachelor's degree in Computer Science, Engineering, or a related field, or equivalent practical experience. ● 5+ years of professional experience in a DevOps, SRE, or Cloud Infrastructure role. ● Strong proficiency with AWS, Linux, and containerized environments (Docker, Kubernetes). ● Deep understanding of CI/CD best practices and hands More ❯

. Implement cloud monitoring, operations, and optimization strategies . Ensure compliance with industry regulations and best practices . Provide technical mentorship and leadership to engineering teams. Support multi-cloud and hybrid-cloud deployments (Azure, AWS, Google Cloud). Required Skills and Experience 6+ years of experience in cloud architecture … in cloud solutions design and large-scale cloud transformation projects . Strong knowledge of IaaS, PaaS, and hybrid cloud technologies . Experience in DevSecOps, SRE, Agile, and cloud-native operations . Familiarity with cloud cost optimization (FinOps) and cloud security best practices . Hands-on experience with automation tools such … frameworks (PCI-DSS, Financial Services, etc.). Expertise in Kubernetes solutions (GKE, AKS, EKS, OpenShift). Ability to optimize cloud services using FinOps and SRE principles . Benefits £100,000 - £118,000 + Bonus More ❯

DC & Security enginer with deep expertise in low-latency networking, multicast technologies, and secure data centre infrastructure. This is a hands-on, high-impact engineering role where you’ll be responsible for the full lifecycle of network systems—from design and deployment to performance monitoring and continuous improvement. Key … detailed system performance reviews to drive continuous improvement. Contribute to engineering patterns, enabling the automation, testing, and deployment of network solutions within an SRE/DevOps framework. Technical Requirements Proven experience working on enterprise-scale networks, particularly in latency-sensitive environments (finance/trading preferred). Deep knowledge of … using packet capture tools. Experience with Data Centre and SDN technologies: Cisco ACI, VxLAN, and related tooling. Understanding of network automation principles; exposure to SRE/DevOps practices is a plus. Working knowledge of TCP/IP and multicast in internet-facing architectures. More ❯