Senior Application Architect (Java with AWS)
Confirmed on the employer's own hiring board on Oct 22, 2026. First seen by Alion on Sep 14, 2026. London Stock Exchange Group scores B on the Alion truth index.
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. 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!!
ROLE SUMMARY:
As the Application Architect you will work with the Solution Architect of World-Check One - Risk Engineering. Risk Engineering and be responsible for the development of critical financial services such as World-Check One, Screening and Due Diligence
You will be a member of software engineering team who designs software solutions from the ground up, making high-level decisions about each stage of the process and directing a team of engineers to build the final product. You will need to demonstrate significant experience as a software engineer. You will need to have the technical expertise and leadership to encourage and influence technology strategy for the business and partner with the business to bring value through the application of ground-breaking technologies and through innovation within the LSEG ecosystem.
WHAT YOU'LL BE DOING:
Build Logical, Physical, Implementation and Process Solution Architecture designs where required.
Be responsible for cloud infrastructure design and develop detailed architecture design for the application.
Through understanding of cloud native architecture and principles.
Optimise cost of cloud solutions by identifying waste and automating cloud cost management and autoscaling
Support DevOps team with CICD automation
Support application development teams in negotiating governance, privacy gates, compliance and risk analysis.
Ability to lead production issue RCA and resolution
Work with Product Owners and Business Analysts providing them with conceptual ideas of how solutions can be designed, at what cost and high-level timescales.
Own, champion and lead all aspects of key quality of service requirements implementation for availability, recovery, reusability, performance, maintainability, security, capacity, and compatibility.
Partner with Solution Architects to produce where required:
Domain/business logic model design
Interoperability design such as API and Messaging
Data model design
Partner with the Infrastructure team to produce physical architecture designs.
Pair design with other Application Architects and Technical leads. Develop their design skills so that they become self-reliant.
Produce proof of concepts that could be handed over to the Technical Leads / Dev teams for full-scale development.
Contribute to architecture communities of practice and architecture councils, leads the development of architectural standards by leading and influencing architecture teams.
Identifies where technology and partnerships can cause a ground-breaking shift in business and works with key business partners to bring it to realisation.
Recognised internally and externally as an authority on sophisticated technical matters.
Interprets technical issues for non-technical audiences and vice versa - provides leadership to establish and articulate the vision, strategy and direction of solution architecture based upon business and technical requirements.
Develops and delivers formal and informal technical training, presentations, and white papers to both internal and external audiences.
WHAT YOU'LL BRING:
Experience in architecting highly scalable and efficient distributed systems, using different open source tools.
A consistent track record of delivering Application and Cloud Solution Architectures.
Extensive experience selecting and implementing Cloud services, primarily AWS.
Detailed understanding of Messaging Services for modern application architecture.
In-depth experience using cloud patterns, multi-tenancy, sharding, priority queue, throttling, sidecar and CAP theorem.
Understanding of polyglot persistence and hands-on experience with SQL and NoSQL solutions.
Experience with MySQL, Postgres, MongoDB, Elasticsearch and other relational databases
In-depth understanding of HTTP and REST API design, management, and consumption
Very strong Java skills and experienced with Python, Spring Boot, Node js and JavaScript
Understanding of use of AI as a tool and within applications
Experience implementing Enterprise Integration Patterns.
Experience with authentication methods such as SAML, OIDC or Auth2.
Extensive experience designing and implementing solutions for large systems that are scalable, extensible, performant, secure and highly available.
Experienced in presenting with senior leadership and proven communication skills to work across technical and business teams.
Experienced in working with externally sourced engineers and architects.
Awareness of GDPR and ISO standards.
DESIRED SKILLS/EXPERIENCE:
Understanding of the business domain, including: risk management; customer and third-party risk; the regulatory marketplace.
Understanding of the financial markets, banking and news.
THE PERSON:
Possesses robust analytical skills with the ability to synthesise business requirements with technology capabilities to produce a coherent solution architecture that fits with the rest of the ecosystem.
Has the ability, under pressure, to rapidly solve underlying issues and to lead teams to arrive at and craft viable solutions.
Ability to manage numerous projects with conflicting priorities in a constantly evolving environment.
Ability to operate across organisational boundaries, to influence vendors and technology staff and to have an impact on the technology community.
Strong interpersonal skills supported by expressive oral and written communication.
Strong negotiating and influencing skills.
Career Stage:
ManagerLondon 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.
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.