Sr Product Engineer (Python & React)

We're looking for a Senior Product Engineer (Backend-Focused) to join a U.S.-based B2B SaaS product team. This is a hands-on engineering role with a strong focus on Python backend development, data modeling, and scalable application architecture , while also contributing to frontend development using React and TypeScript. You'll work closely with Product Management and other engineers to improve an established platform, build customer-facing features, and make technical decisions that support long-term product growth.

What You'll Do

• Design, maintain, and evolve complex data models to support scalable product features.

• Develop and enhance backend services and APIs using Python (FastAPI, Flask, or Django).

• Improve database performance, data integrity, and application scalability.

• Lead database schema changes, migrations, and data optimization initiatives.

• Build and maintain integrations with external systems and APIs.

• Collaborate with Product Managers to design and deliver customer-facing features.

• Contribute to frontend development using React and TypeScript.

• Evaluate existing architecture and recommend improvements based on business and technical needs.

• Collaborate with DevOps engineers on AWS-based infrastructure and deployments.

• Participate in code reviews, technical discussions, and mentoring.

Must Have

• 6+ years of professional software engineering experience.

• Strong production experience with Python (FastAPI, Flask, or Django) .

• Proven expertise in data modeling, database design, schema evolution, and migrations .

• Strong experience with PostgreSQL and/or MongoDB , including query optimization and performance tuning.

• Experience developing customer-facing products in B2B SaaS environments .

• Working knowledge of React and TypeScript , with the ability to build and review frontend features.

• Hands-on experience with AWS .

• Experience designing and maintaining REST APIs and third-party integrations.

• Experience using AI-assisted development tools such as Claude Code, Cursor, or GitHub Copilot.

• Strong technical ownership, problem-solving, and communication skills.

• Advanced English proficiency , both written and spoken.

Nice to Have

• Experience with complex hierarchical or graph-based data structures.

• Experience with large-scale database migrations.

• Familiarity with Kubernetes/EKS.

• Experience with role-based permissions and access control.

• Exposure to LLM-powered or AI-driven product features.

Why Apply?

• 100% remote opportunity from Latin America.

• USD compensation 6k-7k monthly.

• Paid time off.

• Take ownership of meaningful backend and data architecture decisions.

• Build customer-facing features with real business impact.

• Work closely with a U.S.-based product and engineering team.

Originally posted on Himalayas