Application Feature Architect

Role Overview

The Application Feature Architect is a key member of the Risk Intelligence Engineering team, responsible for designing and guiding the architecture of specific features within World-Check One and related applications. This role bridges high-level solution architecture and detailed implementation, ensuring that feature designs are robust, scalable, and aligned with the overall application strategy. You will work on cloud-native, distributed systems that support high-volume, low-latency transactions, collaborating closely with Solution Architects, Product Owners, and development teams to deliver secure, performant, and compliant solutions within the LSEG ecosystem.

Main Responsibilities

• Feature-Level Architecture: Design and document architecture for individual features, ensuring alignment with overall application and solution architecture.
• Governance & Compliance: Enforce architectural standards, security, and governance processes within feature scope.
• Collaboration: Work closely with Solution Architects, Product Owners, and Business Analysts to translate business requirements into technical designs.
• Technical Leadership: Guide development teams on best practices for feature implementation, scalability, and integration.
• Cloud-Native Design: Apply AWS cloud-native principles for feature architecture using services such as EKS, ECS, Lambda, Global Accelerator, RDS, DocumentDB, DynamoDB, ElasticSearch/OpenSearch, SQS/SNS, S3, MemoryDB and ElastiCache Redis.
• Infrastructure as Code: Support infrastructure automation using Terraform and CI/CD pipelines via GitLab.
• Performance & Security: Ensure features meet quality attributes including performance, security, availability, and maintainability.
• Proof of Concepts: Develop POCs for new feature ideas and hand over to development teams for full-scale implementation.
• DevOps Support: Collaborate with DevOps teams for CI/CD automation and deployment strategies.
• Performance Testing: Contribute to performance and load testing strategies for high-volume, low-latency applications.

Skills & Experience Required

• Proven experience designing feature-level architectures within large-scale, distributed systems.
• Strong knowledge of AWS services (EKS, ECS, Lambda, RDS, DocumentDB, ElasticSearch/OpenSearch, SQS/SNS, S3, MemoryDB, Redis) and cloud-native principles.
• Hands-on experience with Infrastructure as Code (Terraform) and CI/CD pipelines (GitLab).
• Proficiency in Java and Spring Boot; familiarity with Python, , and JavaScript.
• Front-end experience with and modern JavaScript frameworks.
• Strong understanding of REST API design, messaging patterns, and data modelling.
• Experience with SQL, NoSQL databases (MySQL, Postgres, DocumentDB, DynamoDB) and search engines(ElasticSearch/OpenSearch).
• Knowledge of authentication protocols (SAML, OIDC, OAuth2).
• Ability to work closely with developers and influence technical decisions.

Desired Skills

• Experience with distributed systems, high-volume applications, and low-latency APIs.
• Familiarity with performance testing, load testing, and tuning for scalability.
• Understanding of financial services, risk management, and regulatory compliance.
• Knowledge of enterprise integration patterns and cloud cost optimisation.
• Exposure to caching strategies (e.g., Redis, MemoryDB) and asynchronous messaging patterns.
• Experience with API gateway design, rate limiting, and fault-tolerant architectures.
• Awareness of observability practices (metrics, tracing, logging) for distributed systems.

The Person

• Strong communicator who can work across technical and business teams.
• Analytical thinker with the ability to solve complex problems under pressure.
• Collaborative and adaptable, with a passion for delivering high-quality solutions.
• Comfortable operating in fast-paced environments with multiple priorities.
• Ability to mentor developers and promote architectural best practices.
• Strong interpersonal skills supported by clear oral and written communication.
• Demonstrated ability to influence stakeholders and negotiate technical decisions.
• Curious and proactive in exploring emerging technologies and patterns.

Career Stage:

Senior Associate

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.

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