Principal Architect, DI&F

Are you ready to dive into the fast-paced world of ground-breaking finance and technology? If you have a passion for innovation, a thirst for challenge, and a love for all things fintech, then look no further!

LSEG (London Stock Exchange Group) is more than a diversified global financial markets infrastructure and data business. We are 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.

We are seeking a highly skilled Principal Software Engineer to join our Risk Intelligence division within the Digital Identity & Fraud (DI&F) Platform team. In this role, you will work closely with multiple development teams to build and enhance our latest platform offering for Digital Identity flagship products. In addition, you will help key business stakeholders to translate their vision into reality by owning each and all of the following phases: Architecture and design, Security first mindset, epic and story collaboration, agile development, 3rd party vendor API integration and delivery. We build products that run at scale for large financial institutions, and our platform supports that vision.

The ideal candidate will have a strong technical background, problem-solving abilities, and extensive experience with .NET Core or Java and cloud platforms. You will be a key player in designing, developing, and maintaining scalable microservices-based applications in a fast-paced and agile environment.

Key Responsibilities:

- Design, develop, and maintain high-performance APIs consumed by third-party customers for fraud prevention, identity verification, and account validation.

- Collaborate with cross-functional teams to understand business requirements and translate them into technical solutions.

- Own the delivery of critical platform capabilities, working autonomously and with little direction; ensure the timely completion of work from other team members, delegating work when required and mentoring others.

- Design, develop and socialize microservices based distributed systems utilizing cloud-native architecture.

- Build positive relationships with internal and external stakeholders, growing own network and collaborating with other teams.

- Communicate complex / technical information clearly and concisely in an audience appropriate format.

- Ensure code quality by adhering to SOLID principles, design patterns, and using static and dynamic code analysis tools such as SonarQube and Coverity.

- Work in an agile environment, contributing to SCRUM and Kanban workflows to meet tight delivery schedules.

- Document the code structure, technical designs, and development processes for future reference.

- Build and deploy containerized solutions using Kubernetes and Docker for cloud platforms such as AWS, Azure, or GCP.

- Work with architects to decompose a solution into Epics.

- Lead design decomposition and planning for Epics breaking them down to journeys with product owners and quality leads.

Key Technical Skills:

- Programming Languages: .NET Core 6+ with C# or Java

- Backend Development: Multi-threading, exception handling, and ORM frameworks such as Entity Framework Core or JPA

- Databases: PostgreSQL/MySQL with strong data modeling and SQL skills

- Testing Tools: JUnit, NUnit

- Cloud Platforms: Azure, AWS, GCP

- Containerization: Docker, Kubernetes, or similar

- Code Quality: SonarQube, Coverity

- Agile Development: SCRUM, Kanban, TDD

Other Required Skills:

- Strong analytical and problem-solving capabilities

- Excellent communication, presentation, and documentation skills

- Ability to work independently and manage dynamic priorities

- Strong collaboration skills with internal and external stakeholders

- Ability to articulate technical concepts and designs to non-technical teams

Nice To Have:

- TypeScript, React, Node.js

- Experience in the FinTech industry, especially in financial markets or fraud prevention systems.

- Experience with event-driven architecture and message brokering tools including RabbitMQ, AWS MQ, or Azure Queue.

- Familiarity with NoSQL databases like MongoDB, DynamoDB, or CosmosDB.

- Experience working with highly distributed, data-intensive systems.

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. You will be part of a collaborative and creative culture where we encourage new ideas and are committed to sustainability across our global business. You will experience the critical role we have in helping to re-engineer the financial ecosystem to support and drive sustainable economic growth. Together, we are aiming to achieve this growth by accelerating the just transition to net zero, enabling growth of the green economy and creating inclusive economic opportunity.

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

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.

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.

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. You will be part of a collaborative and creative culture where we encourage new ideas and are committed to sustainability across our global business. You will experience the critical role we have in helping to re-engineer the financial ecosystem to support and drive sustainable economic growth. Together, we are aiming to achieve this growth by accelerating the just transition to net zero, enabling growth of the green economy and creating inclusive economic opportunity.

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

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.

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.