Principal Software Engineer (Backend)

Our client, a venture-backed Fintech startup, is hiring a Principal Software Engineer (Backend) to join the team remotely. The successful candidate will drive the design and scalability of their backend systems, seamlessly integrating AI solutions and connecting traditional backend services with AI inference pipelines to ensure robust, high-performance operation at production scale.

Responsibilities

• Drive the design and implementation of Django-based backend systems that power the company’s core platform.

• Architect scalable, reliable APIs that integrate smoothly with both frontend applications and AI services.

• Develop and maintain AI inference endpoints to serve models at production scale.

• Partner with AI engineers to collect, process and analyze data from application workflows.

• Enhance and optimize AI pipeline evaluation and monitoring systems.

• Take ownership of system architecture and design decisions for high-traffic production environments.

• Support frontend development as needed to ensure a consistent, full-stack experience.

Skillset

• Minimum of seven years of full-stack web development, including at least 4 years focused on AI/ML engineering or managing large-scale data pipelines.

• Expert backend engineering skills with Django, Python, REST APIs and relational databases (AWS RDS/Postgres).

• Hands-on experience integrating AI/ML services via APIs (e.g. OpenAI, Anthropic, LlamaIndex).

• Proven track record of serving AI models in production, building inference pipelines and optimizing performance.

• Strong understanding of AI agent design, retrieval strategies and evaluation methodologies.

• Competent in frontend development using Next.js and React.

• Solid infrastructure expertise: AWS, Terraform, system monitoring, scaling, and resiliency.

• Experience designing fault-tolerant systems supporting thousands of concurrent users.

• Excellent communication skills with the ability to collaborate across teams effectively.

Benefits

• Competitive salary.

• Equity.

• Remote-friendly work environment.

• Comprehensive health benefits.

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