950 Backend Developer Senior LATAM

Disclaimer Must read: Commitment & FocusThis role requires full-time dedication with clear priority given to Darwoft projects during the established working is not compatible with other full-time professional additional professional activities must be disclosed in advance and must not interfere with the responsibilities or working hours of this role.

Backend Developer (Python/FastAPI/PostgreSQL) Senior LATAM

Location: Anywhere in LATAM
Job Type: Remote
Project: Fintech Cross-border payments
Time Zone: Flexible within LATAM
English Level: B2 / C1

Get to Know Us Darwoft

At Darwoft we build digital products with heart. Were a Latin American tech company partnering with fast-growing companies around the world to create impactful human-centered software.

Our remote-first culture is built on trust ownership and continuous learning. We value people who adapt quickly take responsibility for their work and feel comfortable navigating evolving contexts. Change is part of how we grow and we support our teams as they grow with it.

If youre looking for a place where your technical decisions matter and your contribution has real impact welcome to Darwoft.

About the Role

Were partnering with a rapidly scaling fintech focused on cross-border payments and remittances enabling users across Latin America to operate directly through WhatsApp. The product is growing fast and entering a new stage with a strong focus on identity onboarding and account management at scale.

Were looking for a Senior Backend Developer with deep hands-on experience in Python and FastAPI someone highly execution-oriented who enjoys solving concrete problems making technical decisions and owning backend services end to end.

This is a very practical role: youll be designing building iterating and improving backend systems that handle sensitive data high volumes and real-world complexity.

What Youll Be Doing

• Design implement and evolve REST APIs using Python and FastAPI with a strong focus on clarity performance and security.

• Build backend services that manage identity data such as users emails phone numbers beneficiaries and onboarding flows.

• Design and work hands-on with PostgreSQL ensuring solid schemas data integrity and efficient queries.

• Integrate with third-party services related to authentication identity verification and communications (email/SMS).

• Collaborate closely with frontend engineers to define API contracts and data models.

• Contribute to architectural decisions with a pragmatic problem-solving mindset.

• Deploy and operate services on GCP using tools like Cloud Run CloudSQL IAM/Service Accounts Secret Manager and Pub/Sub.

• Implement logging monitoring and auditing to ensure traceability and reliability.

• Apply best practices for handling PII and sensitive financial data.

What You Bring

• Strong hands-on experience building production systems with Python and FastAPI.

• Solid background designing and working with PostgreSQL (schema design migrations performance).

• Experience building APIs that handle sensitive data in secure scalable environments.

• Practical experience with Google Cloud Platform (Cloud Run CloudSQL IAM Secret Manager Pub/Sub).

• Good understanding of authentication and authorization mechanisms (JWT OAuth2 OpenID Connect).

• Experience working with Docker CI/CD pipelines and modern deployment workflows.

• Comfortable working autonomously taking ownership and driving solutions forward.

• Clear communication skills in English within a fully remote setup.

Nice to Have

• Experience with from a backend integration perspective (API design data contracts).

• Exposure to NestJS or -based backends.

• Experience in fintech payments remittances or high-volume transactional systems.

• Familiarity with event-driven architectures and messaging systems.

• Experience with Terraform or other Infrastructure as Code tools.

What Darwoft Offers Contractor

• Contractor agreement with payment in USD

• 100% remote work

• Argentinas public holidays

• English classes

• Referral program

• Access to learning platforms

Explore this and other opportunities at: