988 Full Stack Engineer Senior Remote LATAM

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

About Darwoft

Darwoft is a software factory that develops custom software solutions and provides IT staff augmentation services for international clients primarily in the United States and Latin America. We work with startups and growing companies developing high-impact digital products. Our culture is people-first oriented towards technical quality long-term relationships and a collaborative mindset. We combine technical excellence with human proximity.

Senior Fullstack Developer (React/Python/AI Agents/GCP) Contractor LATAM

Location: LATAM (Remote) Contract Type: Contractor Industry: Fintech Cross-border Payments & AI Enterprise Agents Timezone: Flexible within LATAM English Level: B2 / C1 (Advanced)

About the Role

We are collaborating with a fast-growing Fintech that facilitates cross-border payments and remittances in Latin America utilizing WhatsApp as a key product channel. The company is scaling rapidly and investing in two strategic fronts: product innovation and AI applied to internal operations.

As a Senior Fullstack Developer you will build secure and scalable user experiences backend services and AI-driven initiatives involving agent systems data integrations and enterprise automation. This is an ideal opportunity for an engineer who enjoys building at a fast pace while maintaining high engineering standards.

Responsibilities

• Develop responsive secure and user-friendly interfaces using React and TypeScript.
• Build complex onboarding flows and account management systems to handle sensitive user identity data and PII.
• Implement modern authentication flows including social login and identity patterns (OAuth2 OIDC JWT).
• Design and develop robust backend services and REST APIs using Python ideally with FastAPI.
• Integrate frontend components with backend APIs authentication services and third-party identity systems.
• Design and manage relational database schemas (PostgreSQL MySQL or CloudSQL) ensuring data integrity.
• Contribute to AI Enterprise initiatives including internal agents automation workflows RAG-style data retrieval and API-driven tool integrations.
• Connect AI agents and internal tools with various data sources through secure APIs filtering and validation logic.
• Implement monitoring logging auditing and evaluation mechanisms for production workflows.
• Collaborate with backend product UX and AI engineering teams to ensure technical alignment and business impact.

Requirements

Must-Have

• Senior-level experience with React and TypeScript.
• Solid backend experience with Python ideally using FastAPI or similar frameworks.
• Proven track record building and consuming REST APIs.
• Experience with relational databases (PostgreSQL MySQL or CloudSQL).
• Proficiency in cloud environments specifically Google Cloud Platform (GCP).
• Practical knowledge of Docker and CI/CD pipelines.
• Deep understanding of security best practices for handling PII and financial data.
• Strong ownership mindset and the ability to operate autonomously in dynamic environments.
• Advanced English communication skills for collaboration with remote multidisciplinary teams.

Nice-to-Have

• Experience in Fintech payments fraud compliance or identity platforms.
• Hands-on experience with GCP services (Cloud Run CloudSQL IAM Secret Manager Pub/Sub).
• Exposure to AI agents LLM workflows RAG orchestration or automation tools.
• Familiarity with vector databases embeddings or tools like Pinecone.
• Experience with testing frameworks such as Cypress or Playwright.
• Familiarity with event-driven architectures (Pub/Sub Kafka) and Terraform (IaC).

What We Offer

• Competitive compensation in USD.
• 100% remote work within LATAM.
• A people-first and remote-first culture based on trust and continuous learning.
• The opportunity to build production-grade AI systems with real business impact.
  
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