Senior Software Development Engineer

Clearwater-Analytics-; City Of London; On-site; GBP 90,000 - 130,000; Full time

Job summary

Clearwater Analytics seeks a Senior Software Engineer to join the Beacon Core Engineering team. You will design, build, deploy, and maintain high-quality Python-based systems supporting Beacon Cloud, with emphasis on reliability, scalability and security.

You will mentor teammates, lead design discussions, and work across cross-functional teams to deliver robust SaaS solutions. Proactive learning and safe use of AI tools are encouraged to accelerate development and client outcomes.

Qualifications

• Proficient in Python with strong software engineering fundamentals.
• Experience with TypeScript/JavaScript; Rust a strong plus.
• Knowledge of OO programming and software architecture patterns.
• Experience in SaaS environments and client-focused delivery.
• Strong testing discipline across unit/integration/contract tests.

Responsibilities

• Design, build, deploy, and maintain high-quality code.
• Use AI agents to speed up development and advise safe usage.
• Lead design discussions and improve software performance and security.
• Collaborate with cross-functional teams to deliver solutions.
• Mentor teammates and address production incidents promptly.

Skills

Python

TypeScript

JavaScript

Rust

C++

Financial domain experience

OO programming

Mentoring

Testing (unit/integration)

Team leadership

Education

Degree in Computer Science or related field

Tools

CI/CD pipelines

Integrated Development Environments

Job description

Job Summary:We are seeking a skilled and motivated Senior Software Engineer to join our dynamic team at CWAN. The role joins our Beacon Core Engineering team. The Core team develops large part of Beacon Cloud, just above the Platform abstraction. It deals with the developer tools (SDLC) that we offer to clients and use internally - IDE including Cline integration, Code Review, Test Framework, Release process; also runtime execution - batch scheduler, super computer scheduler, containerization, coding libraries - dependency graph and deal model used by the financial layer and clients directly.In this role, you will be responsible for designing, building, deploying, and maintaining high-quality code while collaborating with cross-functional teams to enhance our software offerings. This position is ideal for an engineer who is driven by client satisfaction and has a strong commitment to continuous learning and improvement. We use AI agents to speed up development safely and at same time help clients achieve the same.ResponsibilitiesDesign, build, deploy, and maintain quality code that is simple, well-structured, clear, and well-tested.Use AI agents to speed up development and advise others how to use them safely, both clients and internally.Break down and solve complex problems efficiently, utilizing research and collaboration as needed.Communicate effectively across various mediums, with different audiences, and at appropriate times.Implement and maintain multiple levels of automated testing (e.g., unit, integration, contract, end-to-end).Mentor new and less-experienced team members, sharing knowledge and best practices.Lead design and feature discussions, advocating for enhancements in software performance, scalability, reliability, and security.Coordinate with cross-functional teams to ensure successful integration of software applications.Troubleshoot and resolve production incidents promptly and effectively.Understand customer needs and address issues with empathy and a sense of urgency.Undertake any other reasonable activities required by management.Required SkillsExcellent proficiency in PythonExperience with TypeScript or Javascript, and Rust would be a strong plusFamiliarity with C++ is a plus.Experience in Financial domain is a plus.Strong command of a typed, object-oriented programming language.Deep knowledge of software methodologies, tools, and common architectural patterns.Passion for working in a software-as-a-service environment.Strong focus on client satisfaction and user experience.Excellent teamwork and collaboration skills.Ability to manage time effectively and deliver results within deadlines.Commitment to continuous learning and professional development.Exceptional analytical and problem-solving skills.Proficient in Microsoft Office and other essential computer applications.Attention to detail and strong documentation capabilities.Outstanding verbal and written communication skills.Strong organizational and interpersonal skills.Education and Experience:Degree in Computer Science or related field.5+ years of software development experience using Python or any other OOP languages.