Senior Platform Engineer

About Us

LSEG (London Stock Exchange Group) is more than a diversified global financial markets infrastructure and data business. We are dedicated, open-access partners with a dedication to excellence in delivering the services our customers expect from us. With extensive experience, deep knowledge and worldwide presence across financial markets, we enable businesses and economies around the world to fund innovation, manage risk and create jobs. It’s how we’ve contributed to supporting the financial stability and growth of communities and economies globally for more than 300 years. Through a comprehensive suite of trusted financial market infrastructure services – and our open-access model – we provide the flexibility, stability and trust that enable our customers to pursue their ambitions with confidence and clarity.

LSEG is headquartered in the United Kingdom, with significant operations in 70 countries across EMEA, North America, Latin America and Asia Pacific. We employ 25,000 people globally, more than half located in Asia Pacific.

Role Summary

We are looking for a Platform Engineer / Solution Architect to help shape and evolve our enterprise API Management Platform, a strategic capability that enables teams across the organisation to design, publish, discover, and consume APIs efficiently and securely. This is a platform-as-a-product role focused on building scalable, self-service capabilities, improving developer experience, and driving consistency across a federated technology landscape. Working alongside experienced engineers, product partners, and architects, you will contribute to the long-term evolution of the platform while helping accelerate adoption through automation, standardisation, and AI-enabled ways of working.

What You’ll Be Doing

• Design and evolve the architecture of the API Management Platform, ensuring scalability, resilience, security, and ease of adoption.
• Drive the strategic evolution of core platform capabilities, including API Gateway, API Management, API Discovery, and Developer Experience services.
• Define, implement, and promote reusable patterns, standards, and best practices for API exposure, governance, and lifecycle management.
• Own and continuously improve runtime capabilities such as authentication, authorisation, traffic management, rate limiting, policy enforcement, transformation, and observability.
• Build and enhance self-service capabilities that enable API producers and consumers to onboard, develop, and integrate with minimal manual support.
• Work closely with product, design, and engineering teams to improve platform usability, adoption, and overall developer experience.
• Collaborate with engineering teams across the organisation to understand requirements, remove friction points, and drive platform consistency at scale.
• Contribute to long-term platform ownership by finding opportunities to simplify architecture, reduce technical debt, and improve operational efficiency.
• Establish and promote clear platform standards, ensuring governance and controls are embedded without reducing developer productivity.
• Support and evolve API lifecycle tooling, including design, publishing, documentation, sandbox environments, and discovery capabilities.
• Leverage AI-assisted engineering tools to improve development efficiency, platform automation, testing, and operational excellence.
• Monitor platform health and usage metrics, using data and insights to continuously improve platform performance and customer satisfaction.
• Act as a trusted technical advisor, contributing architectural guidance and helping teams make informed technology decisions.

What You’ll BringMust have

• Experience designing, building, or operating internal platforms, shared services, or enterprise infrastructure capabilities.
• Strong understanding of API management concepts, including API gateways, traffic management, service-to-service communication, and lifecycle management.
• Knowledge of authentication and security patterns, including OAuth, OpenID Connect, API security controls, and access management.
• Experience with distributed systems and cloud-native architectures.
• Ability to design solutions that balance scalability, maintainability, operational efficiency, and developer experience.
• Experience defining technical standards, reusable patterns, and governance approaches that enable consistency across multiple teams.
• Strong problem-solving skills with the ability to navigate ambiguity, assess trade-offs, and make pragmatic architectural decisions.
• Demonstrated ownership attitude with the ability to lead initiatives and drive improvements in complex environments.
• Experience collaborating effectively with engineers, architects, product managers, and collaborators across organisational boundaries.
• Strong communication skills, with the ability to explain technical concepts to both technical and non-technical audiences.
• Experience using AI-enabled development tools such as GitHub Copilot, Cursor, or similar technologies to enhance engineering productivity while maintaining quality and governance.

Desirable Skills & Experience

• Experience with Kong, Apigee, AWS API Gateway, Azure API Management, or similar API management platforms.
• Experience with OpenAPI specifications and contract-first API design approaches.
• Exposure to Platform Engineering practices, including Infrastructure as Code, CI/CD pipelines, automation, and self-service tooling.
• Experience working within federated, multi-team, or enterprise-scale technology organisations.
• Strong interest in Developer Experience (DX), platform adoption, and internal product design.
• Knowledge of observability tooling, monitoring frameworks, and operational excellence practices.

Personal Attributes

• Systems thinker with a passion for building platforms that enable others to succeed.
• Curious, adaptable, and comfortable working with evolving technologies and priorities.
• Collaborative and inclusive, with a strong focus on partnership.
• Proactive and with a continuous improvement approach.
• Passionate about simplifying complexity and delivering scalable solutions that create lasting impact.

Career Stage

Senior Associate

Compensation Information

LSEG is committed to offering competitive Compensation and Benefits. The anticipated annual gross base salary for this position is between 203,800 zł - 322,200 zł. Please be aware base salary ranges may vary by geographic location. In addition to our offered base salary, this role is eligible for our Annual Bonus Plan (”bonus plan”). Target Bonus % will be commensurate with role level and posted career stage. Individual salary will be reflective of job-related knowledge, skills and equivalent experience.

Benefits Information

LSEG roles (excluding internships) are typically eligible for inclusion in our LSEG Benefits program. To view the benefits available for the role you're applying for, please click here. This document provides a list of benefits by country. Simply click on the country where the role is based to view the relevant details. If you have specific questions or would like further details, these can be discussed during your interview.

London Stock Exchange Group (LSEG) Information

Join us and be part of a team that values innovation, quality, and continuous improvement. If you're ready to take your career to the next level and make a significant impact, we'd love to hear from you.

LSEG is a leading global financial markets infrastructure and data provider. Our purpose is driving financial stability, empowering economies and enabling customers to create sustainable growth.

Our purpose is the foundation on which our culture is built. Our values of Integrity, Partnership, Excellence and Change underpin our purpose and set the standard for everything we do, every day. They go to the heart of who we are and guide our decision making