Lead React Developer

London Stock Exchange$147K — $245K *
Finance & Insurance
5 - 7 years of experience
Job Overview by Ladders

Qualifications

  • 5-7 years of experience in software engineering with strong focus on JavaScript and TypeScript.
  • Proven leadership in a Senior Engineer role with technical ownership and delivery responsibility.
  • Expertise in distributed systems and cloud architectures (Azure or AWS).
  • Experience designing and implementing high-performance, scalable applications.
  • In-depth knowledge of Agile methodologies, CI/CD processes, and automated testing frameworks.
  • Demonstrated ability to lead complex projects in live production settings.
  • Excellent communication and stakeholder management skills.

Responsibilities

  • Collaborate with architects and product teams to design scalable trading solutions.
  • Lead design and development of cloud-native applications on Azure/AWS.
  • Mentor engineers to foster a collaborative team culture.
  • Enhance engineering standards including code quality and testing strategies.
  • Translate business requirements into technical solutions in partnership with stakeholders.
  • Improve system reliability and implement proactive monitoring strategies.
  • Drive performance optimization and security improvements across the platform.

Benefits

  • Annual Wellness Allowance
  • Paid time-off
  • Medical, Dental, and Vision insurance
  • Flex Spending & Health Savings Options
  • 401(K) Savings Plan with company match
  • Basic life insurance and disability benefits
  • Emergency backup dependent care and adoption assistance.
Full Job Description

Lead Software Engineer – React / Fullstack (FX Engineering)

Great opportunity for a Lead Software Engineer (React / Fullstack) to join our FX Engineering team. This group is responsible for building and evolving high-performance FX trading platforms and related services that operate at scale.

We are looking for a hands-on developer who combines deep engineering expertise with strong architectural thinking, mentorship, and a passion for driving high-quality delivery in a fast-paced environment.

Responsibilities
  • Hands on developer, partnering closely with architects, product, and global engineering teams to design and deliver complex, scalable trading solutions.
  • Lead the design and development of cloud-native applications, driving best practices across Azure/AWS environments.
  • Guide and mentor engineers, fostering a high-performing, collaborative, and inclusive team culture.
  • Drive engineering standards, including code quality, testing strategies, CI/CD, and DevOps best practices.
  • Partner with product and business stakeholders to translate requirements into robust technical solutions.
  • Lead efforts to improve system reliability, observability, and availability, including proactive monitoring and incident resolution strategies.
  • Identify and deliver improvements across areas such as performance optimization, cost efficiency, security, and developer experience.
  • Champion automation and continuous improvement, red
  • Producing manual effort and increasing delivery velocity.
Required Skills
  • Strong hands-on experience with JavaScript, TypeScript, and modern frontend frameworks (React preferred)
  • Proven experience in a Lead or Senior Engineer role, owning technical direction and delivery
  • Deep understanding of distributed systems and cloud architectures (Azure or AWS preferred)
  • Demonstrated ability to design and build scalable, high-performance applications
  • Strong experience with modern software engineering practices (Agile, CI/CD, automated testing, DevOps)
  • Proven track record of leading complex initiatives and delivering results in production environments
  • Ability to drive technical discussions, influence decisions, and align cross-functional teams
  • Strong problem-solving skills with the ability to navigate and resolve complex, multi-system issues
  • Excellent communication and stakeholder management skills
Desired Skills
  • Fullstack development experience (backend + frontend)
  • Experience in financial markets or trading systems (especially FX)
  • Passion for mentoring and developing engineers
  • Strong focus on engineering excellence and continuous learning

Career Stage:

Manager

Compensation/Benefits Information:

LSEG is committed to offering competitive Compensation and Benefits. The anticipated base salary for this position is $147,500 - $245,900.

Please be aware base salary ranges may vary by geographic location, city and state. In addition to our offered base salary, this role is eligible for our Annual Incentive Plan (AIP/”bonus plan”). Target AIP rates will be commensurate with role level and posted career stage. Individual salary will be reflective of job related knowledge, skills and equivalent experience. LSEG roles (excluding internships and part-time roles of less than 20 hours per week) are typically eligible for inclusion in our LSEG Benefits program, which includes offerings of: Annual Wellness Allowance, Paid time-off, Medical, Dental, Vision, Flex Spending & Health Savings Options, Prescription Drug plan, 401(K) Savings Plan and Company match. LSEG’s Benefits plan also includes basic life insurance, disability benefits, emergency backup dependent care, adoption assistance commuter assistance etc.

About London Stock Exchange

London Stock Exchange Careers

There has never been a better time to join the global team at London Stock Exchange, a leading financial marketplace renowned for its robust growth, innovation, and leadership in the financial sector.

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Join London Stock Exchange's market-leading team to help drive the future of financial markets. At the intersection of finance and technology, the company offers a unique position in the marketplace, fostering digital innovation and industry expertise. Professionals at London Stock Exchange work with a dynamic team of business and technology advisors, helping clients and the market navigate through complex financial landscapes with cutting-edge solutions. Collaborate with some of the most talented financial experts in the industry—professionals dedicated to advancing the state of financial markets and services.

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