Senior Backend Engineer

Who are we?

Finance teams need clear visibility into their cash flow, but most still rely on Excel to manually track data across multiple bank accounts. This makes it hard to see real-time cash positions, spot trends, and drive smarter financial decisions.

Nilus changes that.

We're building an AI-powered cash management platform that gives finance teams real-time cash visibility, forecasting, and reconciliation—all powered by AI, eliminating manual work and unlocking insights that help businesses grow.

Backed by top VCs like Bessemer, Felicis, BTV, and Symbol, Nilus is a fast-growing fintech startup led by a team of ex-fintech pros passionate about transforming the finance function.

What You'll Do:

• Design and implement robust, scalable backend services for our treasury management platform
• Architect solutions in a distributed, cloud-native environment using modern tools to support highly scalable systems
• Collaborate with our data science team to integrate AI capabilities into our core product
• Build RESTful APIs and microservices that power our customer-facing applications
• Participate in code reviews and contribute to technical decisions
• Work directly with product and customer success team to understand customers’ challenges and design effective solutions
• Collaborate with cross-functional teams including product, DevOps, and frontend engineers

What You Need:

• 5+ years experience as a backend engineer, with participation in large-scale projects
• Strong proficiency with Python 3.x (3+ years of experience)
• Experience with web frameworks like FastAPI, Flask, or Django
• Knowledge of database systems (SQL and NoSQL)
• Familiarity with AWS cloud platform
• Experience with API design and implementation
• Passion for software architecture, clean code, and testing
• Strong problem-solving skills and attention to detail

Nice to Have:

• Experience with Kubernetes and container orchestration
• Familiarity with CI/CD pipelines (GitHub Actions, Jenkins, etc.)
• Experience in the financial services or fintech space
• Background in treasury management, payments, or related financial domains
• Exposure to AI/ML technologies and integration patterns
• Knowledge of event-driven architectures
• Experience with data streaming technologies (Kafka)

Our Tech Stack:

• Backend: Python, FastAPI
• Cloud: AWS
• Data: PostgreSQL, Redis, Kafka
• Developer Tools: GitHub Copilot, Cursor
• Project Management: Linear