Principal Engineer

Overview

As a Principal Engineer at LSEG, you will design and maintain enterprise-grade platforms across on‑prem and cloud environments. You will shape secure, scalable systems and guide architecture decisions within a cross‑functional technology team. Your work will focus on high availability, reliability, and cost‑effective operations for mission‑critical applications. You will mentor engineers, drive DevOps and security best practices, and contribute to the company’s focus on innovation and financial market resilience.

Pay / Benefits

• healthcare
• retirement planning
• paid volunteering days
• wellbeing initiatives

Responsibilities

• Design and build highly available enterprise applications and optimize mission-critical systems
• Collaborate with geographies and cross‑functional teams to define objectives and deliver on timelines
• Set technical standards, patterns, and best practices for API design, development, and security
• Design and build on‑premises and AWS infrastructure ensuring high availability
• Troubleshoot complex distributed systems and resolve critical issues
• Lead cloud security posture management per enterprise security standards
• Drive observability through tools like Datadog to monitor performance
• Mentor a diverse team of software engineers to promote collaboration and continuous improvement

Key requirements

• Bachelor’s degree or equivalent experience in a relevant field
• Hands-on experience with .NET/C# and MS SQL
• Extensive experience building highly-available distributed systems in on‑prem and AWS
• Strong experience with AWS services (EKS, EC2, S3, RDS, Lambda, API Gateway, ECS, VPC, IAM, CloudWatch)
• Experience with relational and NoSQL databases (e.g., DynamoDB)
• Hands-on with message brokers/event-driven architectures (Kafka, RabbitMQ)
• Experience with CI/CD tools (Jenkins, GitLab CI, Ansible, Terraform)
• Experience with observability platforms (Datadog, Prometheus)
• Disaster recovery design and drills
• Solid knowledge of cloud security best practices (IAM, encryption, vulnerability scanning, audits)

• Collaborative mindset
• Strong debugging and problem-solving
• Stakeholder management across geographies
• .NET/C#
• MS SQL
• AWS (EKS, EC2, S3, RDS, Lambda, API Gateway, ECS, VPC, IAM, CloudWatch)

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