Senior Python Backend Developer (FastAPI/PostgreSQL/Docker) · LATAM

• Location: Anywhere in LATAM

• Job Type: 100% Remote

• Contract Type: Contractor — USD

• Project: AI & Data Intelligence Platform for Life Sciences

• Industry: Life Sciences / Healthtech

• Time Zone: Availability to collaborate with US-based teams

• English Level: B2 / C1

• Seniority: Senior

Get to Know Us

At Darwoft, we create software that drives real change. But we're more than just tech — we're people first.

We're a Latin American technology company partnering with organizations around the world to build impactful, human-centered digital products. Our remote-first culture is based on trust, collaboration, continuous learning, and technical excellence.

We work closely with international product and engineering teams, giving our developers the opportunity to contribute directly to complex products while maintaining a strong sense of ownership and autonomy.

About the Project

You'll join an international technology company building an AI and data intelligence platform for the Life Sciences industry.

The platform helps organizations work with large volumes of complex medical and scientific information, combining structured and unstructured data to support research, analysis, knowledge management, and evidence-driven decision-making.

This is a mature product environment where backend services, data processing, APIs, integrations, scalability, reliability, and software quality play a central role.

You'll work within a distributed engineering team building and evolving the backend services that power these data-intensive and AI-enabled workflows.

We're Looking for a Senior Python Backend Developer

We're looking for an experienced Python Backend Developer with strong software engineering fundamentals and hands-on experience building production-grade APIs and backend services.

The core stack includes Python, FastAPI, PostgreSQL, REST APIs, and Docker.

You'll be responsible for designing, developing, and evolving backend components used by a sophisticated SaaS platform, working closely with engineers, product teams, and other technical stakeholders.

This role is particularly suited for someone who enjoys solving backend problems beyond simply implementing endpoints: API architecture, data modeling, query optimization, maintainability, testing, integrations, and scalability will all be part of the challenge.

What You'll Be Doing

• Design, develop, and maintain backend applications and services using Python.

• Build robust, scalable, and well-structured RESTful APIs using FastAPI.

• Design and evolve backend architectures that support complex, data-intensive product workflows.

• Create and optimize PostgreSQL data models, schemas, and queries.

• Improve database performance and identify opportunities for query and data-access optimization.

• Build and maintain containerized services using Docker.

• Develop integrations between internal services, external APIs, and third-party platforms.

• Collaborate with product, frontend, data, and engineering teams to translate product requirements into maintainable technical solutions.

• Participate in architectural discussions and contribute to technical decision-making.

• Write clean, modular, maintainable, and testable Python code.

• Implement unit, integration, and API testing strategies.

• Review code and contribute to engineering standards and development best practices.

• Troubleshoot production issues and investigate backend performance or reliability problems.

• Help improve existing services as the platform and its data-processing needs continue to scale.

• Contribute to CI/CD and modern software delivery practices.

• Document APIs, technical decisions, integrations, and backend components.

• Communicate effectively with engineers and stakeholders working across distributed international teams.