One of our Customer based in CA, USA (ROI-AI), founded by ExGoogle DeepMind is building an AI-powered platform for automating chargeback dispute management in wholesale and retail distribution.

The platform will help analysts reduce manual work by 90% through intelligent document parsing, evidence assembly, and workflow automation.

ROI-AI is a seed-stage startup with a solid technical foundation and early customer traction, looking to expand the engineering team to complete our MVP and scale.

About the Role :

We're looking for a Backend Engineer to join our small, fast-moving team.

You'll work on core systems that process chargebacks, manage cases, and integrate with financial services infrastructure.

This is a high-impact role where your work directly affects product delivery and customer success.

Responsibilities :

- Design and implement backend services in Python (Fast API).

- Build and maintain APIs that power our web applications.

- Work with PostgreSQL databases and optimize query performance.

- Develop integrations with third-party services (payment processors, email, S3).

- Implement financial calculations with precision and auditability.

- Write tests and maintain high code quality standards.

- Collaborate with frontend engineers on API contracts and system design.

- Contribute to infrastructure tooling and deployment pipelines.

Tech Stack :

Layer Technologies :

- Backend -Python 3.11+, Fast API.

- Database-PostgreSQL, MS SQL Server (customer ERP integration).

- Infrastructure-Docker, AWS (LightSail, S3, SES, Secrets Manager).

- CI/CD-GitHub Actions, Terraform.

- Testing-Pytest, integration tests.

- AI/ML-Anthropic Claude, OpenAI (orchestration layer).

Requirements :

- 4+ years of backend development experience in Python.

- Strong Python proficiency (Fast API, async/await, Pydantic preferred).

- Experience with relational databases and SQL (PostgreSQL).

- Understanding of RESTful API design.

- Familiarity with Docker and containerized development.

- Comfortable working in a fast-paced startup environment.

- Strong written and verbal communication skills.

- Candidates preferred from tier 1 & tier 2 colleges.

Nice to Have :

- Node.js/TypeScript experience.

- Experience in fintech, payments, or dispute management.

- Financial calculations and billing system experience.

- AWS experience beyond basics (S3, SES, Secrets Manager).

- Multi-tenant SaaS architecture experience.

- Background with authentication systems (Clerk, Auth0).

- Experience with AI/ML integrations or LLM APIs.

- Previous startup or founding engineer experience.

What You'll Work On (First 90 Days) :

- Month 1: Onboard, understand the codebase, ship 1-2 small features.

- Month 2: Own a core workflow (billing, remittance tracking, or integrations).

- Month 3: Lead implementation of a major feature, contribute to architecture decisions.

- Compensation: The compensation offered for this role will be at the prevailing best market rate.

- You will be working from Noida and your Manager will be based in California, USA.

- You must have a valid passport to apply for this role.