LSEG Interview Preparation
Medium-HardTechnology · India
LSEG is a leading global financial infrastructure and data provider. We play a vital social and economic role in the world's financial system. With our open approach, trusted expertise and global scale, we enable the sustainable growth and stability of our customers and their communities. A unique open platform, best-in-class data and expertise - all the ingredients for executing critical investing, trading and risk decisions with confidence. Our indices inform your asset allocation decisions, support portfolio construction, and allow for risk and performance analysis. The London Stock Exchange is at the heart of where ideas meet capital and become reality, with the flexibility to make connections and create real impact. Access your trusted FX solutions in one place. Our end-to-end suite of trading venues, platforms, insights, data and compliance tools empower the FX community. We help you manage the world of risk. Do business with your customers and third parties with confidence whilst reducing time-to-revenue for new clients. Our range of post trade risk management, optimisation and regulatory solutions can make your operations more efficient and help drive capital and cost savings. Build a career that combines growth, opportunity, and meaningful impact. LSEG drives conversations that matter - at leading events globally and through our own summits, forums and webinars.
About LSEG
LSEG is a leading global financial infrastructure and data provider. We play a vital social and economic role in the world's financial system. With our open approach, trusted expertise and global scale, we enable the sustainable growth and stability of our customers and their communities. A unique open platform, best-in-class data and expertise - all the ingredients for executing critical investing, trading and risk decisions with confidence. Our indices inform your asset allocation decisions, support portfolio construction, and allow for risk and performance analysis. The London Stock Exchange is at the heart of where ideas meet capital and become reality, with the flexibility to make connections and create real impact. Access your trusted FX solutions in one place. Our end-to-end suite of trading venues, platforms, insights, data and compliance tools empower the FX community. We help you manage the world of risk. Do business with your customers and third parties with confidence whilst reducing time-to-revenue for new clients. Our range of post trade risk management, optimisation and regulatory solutions can make your operations more efficient and help drive capital and cost savings. Build a career that combines growth, opportunity, and meaningful impact. LSEG drives conversations that matter - at leading events globally and through our own summits, forums and webinars.
Interview Rounds4
2–3 DSA coding problems on HackerRank, CodeSignal, or company platform
Data structures & algorithms — arrays, trees, graphs, dynamic programming
System design or low-level design — scalability, APIs, databases
Career goals, teamwork, strengths/weaknesses, role expectations
Practice Questions10
Key Topics
- Data Structures & Algorithms150q
- System Design50q
- Object-Oriented Design40q
- SQL & Databases25q
- CS Fundamentals (OS, Networking)25q
Expert Tips
- Practice LeetCode easy and medium problems before the OA — focus on arrays, strings, trees, and graphs.
- For system design, use the RESHADED framework: Requirements, Estimation, Storage, High-level design, APIs, Detailed design, Evaluation.
- Prepare 3–4 STAR stories covering: a challenge you solved, a time you worked in a team, a project you owned end-to-end.
- After every coding solution, proactively state the time and space complexity — interviewers expect it.
- Study common CS fundamentals: process vs thread, TCP vs UDP, REST vs GraphQL, SQL indexing, CAP theorem.