Lead Site Reliability Engineer - Operations Excellence

JPMorganChase; Glasgow; On-site; GBP 90,000 - 130,000; Full time

Job summary

JPMorgan Chase in Glasgow, United Kingdom, is seeking a Lead Software Engineer to build and operate large language model serving infrastructure at scale. You will own reliability, performance, and cost‑efficiency of the LLM platform end to end, and work hands‑on with cloud and Kubernetes deployments.

You will deploy and manage LLM serving stacks (vLLM, llm-d) on Amazon EKS, SageMaker and on‑prem GPUs, with strong observability, incident response, and cost‑aware performance tuning to deliver

Qualifications

• Strong software engineering and production stability in AI systems.
• Hands-on Python for building production-grade services and tooling.
• Experience with AWS and Terraform for infra delivery.
• Knowledge of observability, monitoring, and incident response.

Responsibilities

• Design, develop, and deliver secure, high-quality production software for AI infra.
• Operate and scale LLM serving infra including model hosting and routing.
• Implement observability with dashboards and alerting.
• Lead incident response and post-incident analysis.
• Collaborate across teams to improve stability and cost efficiency.

Skills

Python

AWS

Terraform

Kubernetes

SRE

LLM inference

Observability

Tools

vLLM

llm-d

KServe

SageMaker

EKS

Prometheus

Grafana

Job description

Job Description

Help shape how AI systems run reliably in production at scale. In this role, you’ll build and operate large language model serving infrastructure, bringing strong engineering fundamentals and site reliability practices to cutting‑edge AI platforms. You’ll work hands‑on with cloud and Kubernetes‑based deployments, deep observability, and cost‑aware performance tuning. If you enjoy solving hard production problems and making platforms measurably better, you’ll find meaningful impact and growth here.

As a Lead Software Engineer at JPMorgan Chase in the AI and Machine Learning Platform team, you will build and scale AI infrastructure that modernizes traditional infrastructure management and site reliability engineering through applied AI. You will own the reliability, performance, and cost‑efficiency of the LLM inference platform end to end. You will operate large language model serving stacks (such as vLLM and llm-d) in production at scale, with deep instrumentation and strong operational rigor. You will partner across engineering to deliver secure software, improve stability, and lead incident response and continuous improvement.

Job Responsibilities

• Design, develop, troubleshoot, and deliver secure, high‑quality production software and services for AI infrastructure
• Build backend services and APIs that enable reliable operation of AI infrastructure in production
• Operate and scale LLM serving infrastructure (such as vLLM and llm-d), including model hosting, request routing, continuous batching, and KV‑cache optimization
• Deploy, host, and lifecycle‑manage open‑source and proprietary LLMs on Amazon EKS and Amazon SageMaker, as well as on‑prem and local GPU clusters, using reproducible infrastructure as code and continuous delivery pipelines
• Implement observability (logs, metrics, traces) with dashboards and actionable alerting, including Prometheus metrics and Grafana/Alertmanager integration for LLM and GPU workloads
• Tune GPU and accelerator capacity, autoscaling, and cost efficiency for LLM inference workloads using performance and optimization techniques (e.g., quantization, parallelism, speculative decoding)
• Lead reliability engineering for LLM endpoints through capacity planning, load/soak testing, safe rollouts (blue/green, canary), failover, and incident response for outages and model‑quality regressions
• Participate in an on‑call rotation, lead incident triage and mitigation, and produce clear post‑incident root‑cause analyses and follow‑ups
• Identify recurring operational issues and automate remediation to improve platform stability and developer experience
• Build and maintain multi‑agent systems with strong orchestration (planning, coordination, tool‑calling, state/memory, and workflow control) where appropriate
• Contribute to an inclusive team culture grounded in diversity, opportunity, inclusion, and respect, and help drive adoption of leading‑edge technologies through communities of practice

Required Qualifications, Capabilities, and Skills

• Formal training, certification, or equivalent practical experience in software engineering concepts
• Hands‑on experience with system design, application development, testing, and operational stability in production environments
• Advanced proficiency in Python for building production‑grade services and tooling
• Proficiency with automation and continuous delivery methods
• Hands‑on experience with AWS and Terraform for infrastructure delivery and lifecycle management
• Strong understanding of site reliability engineering practices, including incident management, root‑cause analysis, runbooks, and reliability patterns
• Practical knowledge of observability and instrumentation across metrics, logs, and traces
• Comfort with on‑call operations and production troubleshooting
• Hands‑on production experience operating LLM inference servers such as vLLM and llm-d (or directly equivalent serving stacks)
• Hands‑on experience hosting and serving LLMs on Amazon EKS and/or Amazon SageMaker, and on local GPU infrastructure
• Knowledge of LLM reliability and risk considerations, including latency/throughput trade‑offs, model and weight versioning, prompt/response logging, and safe rollout patterns

Preferred Qualifications, Capabilities, and Skills

• Experience developing generative AI applications, AI agents, vector search, and retrieval‑augmented generation patterns
• Experience building AI agents using frameworks such as LangChain, CrewAI, LangGraph, or similar orchestration platforms
• Experience operating or integrating serving platforms such as KServe, Ray Serve, NVIDIA Triton Inference Server, Text Generation Inference (TGI), alongside vLLM/llm-d
• Familiarity with Amazon SageMaker JumpStart, SageMaker Endpoints, and Amazon Bedrock for managed model hosting
• Experience with online LLM quality monitoring (e.g., hallucination, toxicity, drift detection) and tracing via OpenTelemetry conventions
• Contributions to open‑source LLM serving or inference projects (e.g., vLLM, llm-d, Ray, KServe, Triton)

Equal Opportunity Employer

We are an equal‑opportunity employer and place a high value on diversity and inclusion at our company. We do not discriminate on the basis of any protected attribute, including race, religion, color, national origin, gender, sexual orientation, gender identity, gender expression, age, marital or veteran status, pregnancy or disability, or any other basis protected under applicable law. We also make reasonable accommodations for applicants' and employees' religious practices and beliefs, as well as mental health or physical disability needs. Please visit our FAQs for more information about requesting an accommodation.