Application Architect

LSEG; Greater London; Hybrid; GBP 90,000 - 130,000; Full time

Job summary

London Stock Exchange Group (LSEG) is seeking an Application Architect to drive design across the Risk Content Curation and Distribution Platform. You will shape architectures, guide engineering teams, and ensure security, scalability, and reliability of cloud-native applications in AWS.

You will collaborate with Solution Architects, Product Owners, and engineering teams to translate requirements into robust, scalable designs, promoting reuse and best practices across components.

Qualifications

• Experience as an application architect or senior engineering role within distributed systems.
• Strong understanding of application design, API design, and data modelling.
• Solid experience with Java and/or Python in production environments.
• Practical experience designing and operating AWS-based applications in a cloud-native environment.
• Working knowledge of containerised architectures, messaging patterns, and distributed data stores.

Responsibilities

• Shape application architectures aligned with enterprise standards and translate requirements into pragmatic designs.
• Review significant technical design decisions and ensure quality attributes like performance and scalability.
• Act as a technical reference for development teams and influence decisions through expertise and communication.
• Design cloud-native, AWS-hosted applications with emphasis on observability, operability, and cost.

Skills

Application architecture

Distributed systems

Java/Python

AWS cloud

Container architecture

CI/CD

Security concepts

Observability

Performance resilience

Data modelling

Job description

Come join the Risk Intelligence Content Curation and Distribution team as an Application Architect, and help drive application design, as we support our World-Check customers in protecting against sanctions evasion, money laundering, human trafficking, terrorisim and more!

Role summary:

The Application Architect plays a key technical role within the Risk Intelligence Engineering organisation. As we build the next set of applications and services this role contributes to their the architecture and technical direction on the Risk Content Curation and Distribution Platform

This role focuses on application‑level architecture, design quality, and technical guidance , working closely with Solution Architects, Product Owners, and engineering teams. You will help translate business and non‑functional requirements into robust, scalable designs while ensuring alignment with architectural standards and long‑term platform strategy.

The environment is cloud‑native and distributed, supporting varied workloads with strong security, reliability, and governance requirements.

What you’ll be doing:

You’ll contribute to and shape application architectures aligned with enterprise and solution‑level standards. Translating requirements into clear, pragmatic architectural designs - promoting consistency, reuse, and good design practices across application components

Applying and promoting architectural principles, security standards, and engineering best practices is a key part of the role. You will also review significant technical design decisions within the application scope, working collaboratively with engineering and solution architecture teams. Ensuring solutions meet required quality attributes including performance, resilience, scalability, and maintainability

You will act as a recognised technical point of reference for development teams. Collaborating with a range of stakeholders to evaluate design options and trade‑offs. You will influence technical decisions through expertise and clear communication rather than formal authority

Guide the design of cloud‑native, AWS‑hosted applications, considering resilience, security, operability, and cost. Ensure operational concerns such as observability, supportability, and deployment are considered early in design.

You will promote continuous improvements, by contributing to architectural roadmaps and the ongoing evolution of the platform; Validating architectural approaches where appropriate through lightweight proofs of concept and Supporting continuous improvement in architectural practices, patterns, and technical standards

What you’ll bring:

• Experience as an application architect or senior engineering role within distributed systems

• Strong understanding of application design, API design, and data modelling.

• Solid experience with Java and/or Python in production environments

• Practical experience designing and operating AWS‑based applications in a cloud‑native environment

• Working knowledge of containerised architectures, messaging patterns, and distributed data stores

• Understanding of Infrastructure as Code concepts and modern CI/CD practices

• Sound understanding of security, authentication, and authorisation concepts

• Strong communication skills, with the ability to explain technical concepts clearly to both technical and non‑technical audiences

• Ability to influence technical decisions and collaborate effectively across teams and cultures

• Experience in designing solutions with good observability practices embedded

• Understanding of performance, scalability, and resilience engineering

• Deeper exposure to event‑driven architectures and asynchronous messaging at scale

• Experience optimising performance, resilience, and cost in production cloud environments

• Familiarity with modern front‑end architectures and integration patterns

• Experience working in financial services, risk, compliance, or other regulated environments is desirable but not essential

The Person

A pragmatic and technically strong architectural thinker who collaborates effectively with both technical and business stakeholders. Comfortable navigating complex, fast‑moving environments, they influence through expertise rather than authority. You are curious, proactive, and focused on delivering high‑quality, sustainable systems.

Career Stage:

Manager

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 and everyday actions.

Working with us means that you will be part of a dynamic organisation of 25,000 people across 65 countries. However, we will value your individuality and enable you to bring your true self to work so you can help enrich our diverse workforce.

We are proud to be an equal opportunities employer. This means that we do not discriminate on the basis of anyone’s race, religion, colour, national origin, gender, sexual orientation, gender identity, gender expression, age, marital status, veteran status, pregnancy or disability, or any other basis protected under applicable law. Conforming with applicable law, we can reasonably accommodate applicants’ and employees’ religious practices and beliefs, as well as mental health or physical disability needs.

You will be part of a collaborative and creative culture where we encourage new ideas. We are committed to sustainability across our global business and we are proud to partner with our customers to help them meet their sustainability objectives. Our charity, the LSEG Foundation provides charitable grants to community groups that help people access economic opportunities and build a secure future with financial independence. Colleagues can get involved through fundraising and volunteering.

LSEG offers a range of tailored benefits and support, including healthcare, retirement planning, paid volunteering days and wellbeing initiatives.

Please take a moment to read this privacy notice carefully, as it describes what personal information London Stock Exchange Group (LSEG) (we) may hold about you, what it’s used for, and how it’s obtained, your rights and how to contact us as a data subject.

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