Type

Full-time

Experience

5+ yr

About this role

Design, develop, and maintain scalable backend services and APIs for cloud-native applications
Build and optimize distributed systems, payment processing pipelines, and backend infrastructure
Ensure high availability, security, scalability, and performance of backend systems
Participate in architecture discussions and contribute to technical strategy and decision-making
Collaborate with Product, Frontend, AI, and DevOps teams to deliver high-quality solutions
Mentor engineers through code reviews, technical guidance, and engineering best practices
Troubleshoot complex production issues and drive continuous improvements
Contribute to AI-powered product capabilities and AI/ML-driven initiatives
Promote engineering excellence, observability, and maintainability across services and infrastructure

5+ years of professional Back-end software engineering experience using Python
Solid experience designing and building RESTful APIs and distributed backend systems
Strong knowledge of SQL and/or NoSQL databases
Hands-on experience with AWS cloud services
Experience with Docker and Kubernetes
Understanding of scalable cloud-native architectures and microservices principles
Experience working in cross-functional Agile teams
Strong problem-solving, communication, and collaboration skills
Ability to drive technical initiatives and contribute to architectural decisions
Upper-Intermediate or higher English level

WILL BE A PLUS

Experience with FastAPI and TypeScript
Experience building AI-powered user experiences or integrating AI/LLM services into Front-end applications
Hands-on experience with AI technologies and LLM ecosystems
Experience integrating OpenAI, Anthropic, or similar AI services
Experience working with AI SDKs and prompt-based applications

Join a project where scalable backend engineering meets modern AI-driven financial technology. We are looking for a Senior / Principal Python Engineer to help build and evolve high-load payment and revenue systems used by businesses worldwide.

You will work on cloud-native backend services, distributed systems, and payment infrastructure while collaborating with Product, Frontend, AI, and Engineering teams. This role is ideal for engineers who enjoy solving complex technical challenges, influencing architecture decisions, and driving engineering excellence.

We at Sigma Software value technical ownership, collaboration, and continuous learning. You will join an international environment where innovation, modern technologies, and professional growth are part of everyday work.

CUSTOMER

Our Customer is a global SaaS company developing an AI-native revenue platform for modern finance and accounting teams. The company provides subscription management, billing automation, and revenue operations solutions that help organizations optimize financial workflows, improve scalability, and streamline transaction management across complex business ecosystems.

PERSONAL PROFILE