Project description Our Client is a leading global financial markets infrastructure and data provider. Their purpose is driving financial stability, empowering economies and enabling customers to create sustainable growth. We are looking for a hands-on Principal Software Engineer with 12–15 years of experience joining our engineering team. In this role, you will design, build, and maintain scalable, secure, and high-performance backend services and platform capabilities. You will work on modern backend systems using Python, FastAPI, Redis, and cloud-native technologies, while contributing to architecture, API design, performance, reliability, and engineering quality. Experience with Azure Container Apps and Azure Blob Storage is desirable. Familiarity with React and frontend integration patterns is a plus.
Responsibilities
Design and develop scalable backend services and APIs using Python
Build high-performance, secure, and maintainable services using FastAPI and similar web frameworks
Own backend architecture, technical design, and implementation for complex systems
Design and consume RESTful APIs with OpenAPI/Swagger specifications
Build reusable backend components, platform services, and integration capabilities
Work with relational and NoSQL databases to design efficient data models and access patterns
Collaborate with product, frontend, platform, QA, DevOps, and security teams to deliver robust solutions
Troubleshoot production issues and drive root cause analysis and long-term fixes
Write unit, integration, and API tests to ensure high code quality and release confidence
Define and promote coding standards, engineering best practices, and CI quality gates
Participate in design discussions, technical refinements, and architecture reviews
Leverage GitHub Copilot to improve productivity, code quality, refactoring, testing, and documentation
Partner with frontend teams to design efficient API contracts and support seamless frontend-backend integration SKILLS Must have
12–15 years of software engineering experience. Backend Engineering & Python
Advanced Python development experience for production-grade backend systems
Strong experience with FastAPI
Familiarity with similar Python web frameworks such as Flask or Django
Strong understanding of RESTful API design and OpenAPI/Swagger
Experience with async programming patterns using asyncio, async FastAPI, or similar libraries
Strong understanding of request lifecycle, middleware, dependency injection, authentication flows, and error handling
Strong knowledge of software engineering fundamentals, design patterns, data structures, and algorithms
Ability to write clean, maintainable, testable, and production-ready code Platform & Architecture
Strong understanding of backend architecture, microservices, and distributed systems
Experience building scalable backend platforms, reusable services, or internal developer/platform capabilities
Experience with API gateways, service-to-service communication, retries, timeouts, rate limiting, and resiliency patterns
Familiarity with event-driven architecture and messaging patterns Data, Caching & Storage
Strong experience with relational databases such as PostgreSQL
Experience with NoSQL databases where applicable
Hands-on experience with Redis is a plus
Strong understanding of database design, indexing, query optimization, transactions, and data consistency patterns
Familiarity with object storage concepts; experience with Azure Blob Storage is a plus Cloud & Infrastructure
Experience with containerized application development using Docker
Familiarity with Kubernetes or container orchestration platforms
Good understanding of CI/CD pipelines using GitLab pipelines
Experience with cloud-native application development is desirable
Azure experience is
good to have
, especially with: o Azure Container Apps o Azure Blob Storage • Familiarity with infrastructure-as-code tools such as Terraform AI-Assisted Development • Proficient in using GitHub Copilot for code generation, refactoring, debugging, documentation, and test generation • Good judgment on when to rely on AI suggestions versus manual implementation • Experience integrating Copilot-assisted workflows into day-to-day engineering practices is desirable
Nice to have
Familiarity with React and modern frontend development concepts
Understanding of frontend-backend integration patterns and API consumption
Exposure to state management approaches and modern web application architecture
Experience building internal tools, dashboards, administrative portals, or developer-facing applications using React is a plus
Ability to contribute to UI-facing platform capabilities when required and collaborate effectively in full-stack solution design