Principal Software Engineer

Salary: £68,000 - 108,000 per year

Requirements:

• We are seeking a hands-on software engineer with excellent communication skills, strong ownership, and the ability to operate effectively in a global team supporting a fast-moving front-office business.
• We expect at least 8 years relevant experience.
• We require a bachelors degree or above in Computer Science, Engineering, Mathematics, Physics, or a related quantitative / computational discipline.
• We value strong hands-on software development experience in one or more modern programming languages such as Java, Scala, C++, C#, Python, or similar.
• We look for strong understanding of distributed systems, service-oriented architecture, data flows, and production support patterns.
• We expect strong analytical and problem-solving skills, with the ability to diagnose complex issues under time pressure.
• We require experience working across the full software development lifecycle, from requirements analysis and design through implementation, testing, deployment, and production support.
• We look for excellent written and verbal communication skills.
• We expect the ability to work directly with business users and explain technical topics clearly.
• We value self-motivation, accountability, and comfort operating with limited supervision.
• We look for a strong team player with a collaborative working style.
• We value experience in front-office technology, trading tools, risk systems, pricing platforms, or financial workflow automation.
• We value knowledge of Fixed Income, Repo, TRS, Structured Note, CDS/CDS Index/CDS Index Option/CDS Index Tranche, Repacks, and PB.
• We value experience with Genesis or similar front-office trading platforms.
• We value experience improving the stability of business-critical applications through refactoring, automated testing, monitoring, performance tuning, and production hygiene.
• We value experience with distributed computing, grid/cloud platforms, service integration, APIs, and data-driven workflows.
• We value experience with modern DevOps and continuous delivery practices.
• We value experience mentoring junior developers or coordinating delivery across a global team.

Responsibilities:

• We provide intraday desk-facing coverage for Credit Repo, Credit Exotics, and related Genesis trading tools.
• We deliver strategic stability and platform enhancements across Structured Credit & Financing workflows.
• We partner closely with traders, structurers, strats, operations, controllers, market risk, and global technology teams to support daily business needs.
• We resolve production issues and drive them to permanent resolution.
• We build robust solutions across trade booking, risk/PnL, margin, settlement, reporting, and workflow automation.
• We lead the development of new ideas and/or policies in our area.
• We analyze multiple sets of information to create summaries for various stakeholders.
• We build credibility with traders and business stakeholders through clear communication and reliable delivery.
• We improve the stability, supportability, and performance of key Structured Credit & Financing tools.
• We deliver hands-on code changes rather than only coordinating work.
• We help the London team become stronger in intraday coverage, Genesis development, and Structured Credit domain knowledge.
• We contribute to a transparent global team culture where people share knowledge, support each other, and focus on improving delivery capability.
• We develop and support medium to large-scale server-side applications.

Technologies:

• C#
• Cloud
• DevOps
• Support
• Java
• Python
• Scala

More:

We are Morgan Stanleys Structured Credit & Financing Technology team in London, part of our Technology division focused on building the connections and capabilities that power our firm and help our clients and colleagues redefine markets. This is a Principal Software Engineering position at VP level within our software engineering job family. We operate as a global leader in financial services across more than 40 countries, with a collaborative culture, flexible working opportunities, and comprehensive employee benefits and perks. Our teams are supported and empowered, and we offer opportunities to grow across the business in an inclusive environment.

last updated 36 week of 2026