Senior Software Engineer –Trading Platform (.NET, Python) in London

Join Barclays as a Senior Software Engineer – Trading Platform (.NET, Python) and you will be responsible for designing, building, and modernising a critical investment banking platform that drives client behaviour through dynamic pricing and axerate management. You will develop high‑performance backend services using C# .NET/.NET Core, build analytics components in Python, and design scalable SQL Server data models to support large volumes of trading and pricing data. You will also develop low‑latency APIs and web‑based dashboards, while helping replatform a legacy system into a scalable cloud‑native solution using Docker and Azure CI/CD. Working closely with business and technology teams, you will ensure the platform delivers accurate outputs.

To Be Successful In This Role

• C# .NET/.NET Core
• Python
• SQL Server

Additional Highly Valued Skills Include

• Experience building Angular/React JS UIs
• Containerisation
• RESTful APIs
• Git
• CI/CD pipelines

This role is based in London.

Purpose of the role

To design, develop and improve software, utilising various engineering methodologies, that provides business, platform, and technology capabilities for our customers and colleagues.

Accountabilities

• Development and delivery of high‑quality software solutions by using industry aligned programming languages, frameworks, and tools.
• Ensuring that code is scalable, maintainable, and optimized for performance.
• Cross‑functional collaboration with product managers, designers, and other engineers to define software requirements, devise solution strategies, and ensure seamless integration and alignment with business objectives.
• Collaboration with peers, participation in code reviews, and promotion of a culture of code quality and knowledge sharing.
• Staying informed of industry technology trends and innovations and actively contributing to the organization’s technology communities to foster a culture of technical excellence and growth.
• Adherence to secure coding practices to mitigate vulnerabilities, protect sensitive data, and ensure secure software solutions.
• Implementation of effective unit testing practices to ensure proper code design, readability, and reliability.

Vice President Expectations

• To contribute or set strategy, drive requirements and make recommendations for change.
• Plan resources, budgets, and policies; manage and maintain policies/processes; deliver continuous improvements and address breaches of policies and procedures.
• If managing a team, define jobs and responsibilities, plan for the department’s future needs and operations, counsel employees on performance and contribute to employee pay decisions and changes.
• May lead specialists to influence the operations of a department, balancing short‑ and long‑term goals and ensuring budgets and schedules meet corporate requirements.
• If the position has leadership responsibilities, demonstrate a clear set of leadership behaviours to create an environment for colleagues to thrive and deliver consistently excellent standards.
• The four LEAD behaviours are: Listen and be authentic, Energise and inspire, Align across the enterprise, Develop others.
• OR for an individual contributor, act as a subject‑matter expert within own discipline and guide technical direction.
• Lead collaborative, multi‑year assignments, guide team members through structured assignments, identify the need for inclusion of other areas of specialisation to complete assignments, and coach less experienced specialists while providing information affecting long‑term profits, organisational risks, and strategic decisions.
• Advise key stakeholders, including functional leadership teams and senior management, on functional and cross‑functional areas of impact and alignment.
• Manage and mitigate risks through assessment, supporting the control and governance agenda.
• Demonstrate leadership and accountability for managing risk and strengthening controls in relation to the work your team does.
• Demonstrate comprehensive understanding of the organisation’s functions to contribute to achieving the business goals.
• Collaborate with other areas of work for business‑aligned support and to keep up to speed with business activity and strategic decisions.
• Create solutions based on sophisticated analytical thought, comparing and selecting complex alternatives.
• In-depth analysis with interpretative thinking will be required to define problems and develop innovative solutions.
• Adopt and include the outcomes of extensive research in problem‑solving processes.
• Seek out, build and maintain trusting relationships and partnerships with internal and external stakeholders to accomplish key business objectives, using influencing and negotiating skills to achieve outcomes.

All colleagues will be expected to demonstrate the Barclays Values of Respect, Integrity, Service, Excellence and Stewardship – our moral compass, helping us do what we believe is right. They will also be expected to demonstrate the Barclays Mindset – to Empower, Challenge and Drive – the operating manual for how we behave.