Principal Full Stack Engineer – SRE

Role Overview

• Collaborate with SREs to convert real‑world operational pain points into well‑crafted, reliable internal tools.
• Build full‑stack internal tools that improve operational efficiency, automation, and visibility for SRE teams.
• Translate engineering pain points into scalable solutions that simplify workflows and enhance reliability.
• Develop backend services, automation frameworks, dashboards, and UIs that reduce cognitive load and accelerate troubleshooting.
• Ensure the tools you build are performant, resilient, and easy to support as usage scales.
• Support engineers through clear documentation, thoughtful UX, and ongoing partnership across teams.

Requirements

• Bachelor’s degree or higher in a technology related field (e.g. Engineering, Computer Science, etc.) required, Master’s degree a plus.
• 5+ years of professional software engineering experience; experience contributing to or leading technical direction a plus.
• Proven experience building full‑stack applications and services in a modern development environment.
• Experience developing cloud‑native applications, preferably on AWS.
• Hands-on experience with container orchestration, preferably with Kubernetes.
• Familiarity with agile development methodologies and collaborative engineering practices.
• Strong full‑stack development experience using Python, Node.js, or Go on the backend, and modern UI frameworks such as React or React Native on the frontend.
• Ability to design and build reliable, scalable services, APIs, and automation tools used by engineering teams.
• Familiarity with event‑driven architectures and messaging technologies such as Kafka, SNS/SQS, or similar.
• Experience integrating with observability platforms (Datadog, Grafana, Prometheus, OpenTelemetry, etc.) and instrumenting applications for metrics, logs, and traces.
• Understanding of AIOps concepts and experience using or integrating tools that support anomaly detection, intelligent alerting, or operational insights.
• Ability to reason about performance, scalability, and data‑flow patterns in distributed systems.
• Comfortable working with relational and NoSQL databases, with a high‑level understanding of schema design and data modeling.
• Strong grasp of DevOps concepts including CI/CD pipelines.
• Familiarity with Infrastructure‑as‑Code tooling (Terraform, CloudFormation, Ansible, etc.).
• Strong communication skills and the ability to partner with SREs, developers, and platform teams to understand needs and deliver intuitive solutions.

Tech Stack

• Ansible
• AWS
• Cloud
• Distributed Systems
• Grafana
• JavaScript
• Kafka
• Kubernetes
• Node.js
• NoSQL
• Prometheus
• Python
• React
• React Native
• Terraform
• Go

Benefits

• Most roles at Fidelity are Hybrid, requiring associates to work onsite every other week (all business days, M-F) in a Fidelity office.
• Private healthcare.
• Pension scheme.
• Flexible working hours.
• Professional development opportunities.