Application Architect

The Application Architect plays a key technical role within the Risk Intelligence Engineering organisation, contributing to the architecture and technical direction of applications and services within the World-Check One 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 high-volume, low-latency workloads with strong security, reliability, and governance requirements., Application Architecture & Design

• Contribute to and shape application architectures aligned with enterprise and solution-level standards
• Translate functional and non-functional requirements into clear, pragmatic architectural designs
• Promote architectural consistency, reuse, and good design practices across application components

Governance & Technical Quality

• Apply and promote architectural principles, security standards, and engineering best practices
• Review significant technical design decisions within the application scope, working collaboratively with engineering and solution architecture teams
• Ensure solutions meet required quality attributes including performance, resilience, scalability, and maintainability

Technical Leadership & Collaboration

• Act as a recognised technical point of reference for development teams working on World-Check One applications
• Collaborate closely with Solution Architects, Product Owners, and Business Analysts to evaluate design options and trade-offs
• Influence technical decisions through expertise and clear communication rather than formal authority

Cloud & Distributed Systems

• Guide the design of cloud-native, AWS-hosted applications, considering resilience, security, operability, and cost
• Advise on appropriate use of REST APIs, messaging, data stores, caching, and integration patterns
• Ensure operational concerns such as observability, supportability, and deployment are considered early in design

Continuous Improvement

• Contribute to architectural roadmaps and the ongoing evolution of the World-Check One platform
• Validate architectural approaches where appropriate through lightweight proofs of concept
• Support continuous improvement in architectural practices, patterns, and technical standards

Essential

• Experience working in an application architecture or senior engineering role within distributed systems
• Strong understanding of backend application design, API design, and data modelling
• Solid experience with Java and Spring Boot 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

Desirable

• Understanding of performance, scalability, and resilience engineering
• Awareness of observability practices such as metrics, logging, and distributed tracing
• 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
• Hands-on experience building or evolving CI/CD pipelines and infrastructure using IaC tools
• Experience working in financial services, risk, compliance, or other regulated environments

The Person

• Pragmatic architectural thinker with strong engineering fundamentals
• Comfortable working across technical and business stakeholders
• Confident operating in complex environments with competing priorities
• Collaborative and influential, able to guide teams through technical expertise
• Curious, proactive, and committed to building high-quality, sustainable systems

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. LSEG's ticker symbol is LSEG. Our People: People are at the heart of what we do and drive the success of our business. Our culture of connecting, creating opportunity and delivering excellence shape how we think, how we do things and how we help our people fulfil their potential. We embrace diversity and actively seek to attract individuals with unique backgrounds and perspectives. We break down barriers and encourage teamwork, enabling innovation and rapid development of solutions that make a difference. Our workplace generates an enriching and rewarding experience for our people and customers alike. Our vision is to build an inclusive culture in which everyone feels encouraged to fulfil their potential. We know that real personal growth cannot be achieved by simply climbing a career ladder - which is why we encourage and enable a wealth of avenues and interesting opportunities for everyone to broaden and deepen their skills and expertise. As a global organisation spanning 70 countries and one rooted in a culture of growth, opportunity, diversity and innovation, LSEG is a place where everyone can grow, develop and fulfil your potential with meaningful careers., 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. If you are submitting as a Recruitment Agency Partner, it is essential and your responsibility to ensure that candidates applying to LSEG are aware of this privacy notice.