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Application Support Engineer (AWS, API)

LSEG (London Stock Exchange)

THA-Bangkok-One Bangkok permanent

Posted: February 19, 2026

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Quick Summary

Job involves applying technical support for AWS and API services. Requires strong technical skills and excellent problem-solving abilities.

Job Description

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 65 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.

Application Support Engineer

Are you seeking a technical job while including interaction with people on a regular basis? Are you detail-oriented and customer-focused? We connect with people, technologies, data and financial markets. Our goal is to achieve progress through data-enabled decisions. So, it is ever more significant to improve the way we work, drive operational excellence and optimize the data at our fingertips. In this role, you will be joining our team as Application Support Engineer.

Role Summary:

Application support engineer is a support role who is responsible for providing suggestions and consultancy to both internal and external clients in areas where technical expertise is required by non-technical role. We investigate root of issue, incident and technical query to bring the best solution to ensure ongoing service of our system. We provide support and deliver works to help improve the development team by taking on issues and queries which interfere in development's working cycle.

We are seeking an enthusiastic, highly motivated, and self-disciplined candidate interested in working with our multinational teams while offering a chance to develop your skills in many areas.
 

Responsibilities and Key Accountabilities:

• Investigate and solve technical issues related to functionality, workflow, cloud services and system configuration

• Provide root cause analysis to pinpoint the underlying causes of recurring or critical issues to prevent future occurrences

• Understand LSEG technology/knowledge including architecture, cloud's micro-services and workflows of our products

• Provide guidance to customers when they have questions related to our product functionality and API Usage.

• Support product managers in technical areas to satisfy challenged business requirements

• Collaborate with development, content, customer support and operation teams to ensure smooth progression of client query and issue/incident's investigation

• Responsible for improving and documenting technical knowledge & processes around application support (using Confluence)

• Provide on-call support during late night and weekend for critical incidents

• Customers and service focused, with determination to meet their needs and expectations

• An ability to work in a fast-paced, high demand work environment

• Self-motivated and able to work both independently and in collaboration with other technologists at all levels

Qualifications and Experience:

• Bachelor’s degree or equivalent experience in Computer Science, Information Technologies or related field

• Experienced in a role which requires high problem solving and analytical skills

• Experienced with AWS Cloud services such as EC2, S3, RDS, Lambda, API Gateway, SQS, SNS, etc.

• Familiarity with AWS CloudWatch for investigating issues, monitoring dashboards, and alarms

• General understanding of Database and basic SQL

• Have a good understanding of REST API and OpenAPI Specification.

• Scripting and automation skills using Python, PowerShell, or other languages

• ITIL knowledge is desirable

• Strong interpersonal and proficient in English communication

Career Stage:

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.

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.

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