Full Stack Mern Developer
Senior fullstack engineer (frontend-heavy) building agent-facing CX operations tooling in React/TypeScript for a FinTech platform, 100% remote for LATAM contractors. Stack spans Tailwind, TanStack Query, micro-frontends (Rspack/Module Federation), FastAPI, plus AI-assisted development with tools like Cursor and Claude Code.
- Compensation
- Not disclosed
- Location
- Buenos Aires, Argentina
- Work setup
- Remote
- Seniority
- Not specified
- Employment
- Contract
- Experience
- 8+ years
- Category
- Fullstack
- Posted
Skills
Must have
- 8+ years of software engineering experience with a strong frontend-oriented background
- Strong production experience with React and TypeScript
- Hands-on experience actively using AI development tools and agentic workflows (Cursor, Claude Code, GitHub Copilot, coding agents, AI-assisted specs)
- Ability to use AI in the engineering workflow while maintaining ownership of architecture, code quality, testing, and technical decisions
- Experience building complex product interfaces (forms, tables, filters, dashboards, multi-step workflows)
- Strong understanding of modern frontend practices and component-driven architectures
- Experience with modern bundlers such as Webpack, Rspack, or Vite
- Experience with Tailwind CSS or similar modern styling frameworks
- Experience consuming REST APIs and working with OpenAPI-based services
- Ability to debug and troubleshoot issues across frontend and backend boundaries
- Experience with modern state management and server-state patterns (TanStack Query, React Context, hooks)
- Strong debugging, problem-solving, and technical decision-making skills
- Ability to collaborate effectively with Product, Engineering, and operational stakeholders
- Advanced English proficiency, spoken and written
Nice to have
- Experience designing or integrating AI-agent workflows, AI-powered interfaces, or automated support operations
- Experience with micro-frontends or Module Federation
- Experience with monorepos using pnpm, Turbo, Nx, or similar tools
- Familiarity with Refine, react-intl, or admin/operations-focused internal platforms
- Experience developing BFF layers with Node.js / Fastify
- Experience with Python / FastAPI, including understanding APIs, proposing schema changes, or implementing small backend endpoints
- Experience with PostgreSQL-backed services and transactional or domain-oriented APIs
- Experience in FinTech, payments, remittances, customer support platforms, or high-volume operational systems
- Experience with GCP, including technologies such as OIDC or Pub/Sub
- Experience with Docker and CI/CD in cloud-native environments
- Familiarity with Storybook, Vitest, and design-system workflows
- Experience working in fast-moving startup or scale-up environments
Full description
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.
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 delivering custom software solutions and IT staff augmentation services to international clients, primarily in the United States and Latin America. We partner with startups and scale-up companies to build high-impact digital products, combining technical excellence with a people-first culture built on long-term relationships and collaborative work.
Senior Fullstack Engineer (React/TypeScript/AI-Assisted Development) · LATAM
- Location: Anywhere in LATAM
- Work Model: 100% Remote
- Engagement: Full-time Contractor
- Project: FinTech · Customer Experience Operations Platform
- English Level: Advanced
- Seniority: Senior
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, availability, or working hours required for this role.
Get to Know Darwoft
At Darwoft, we build digital products with heart.
We're a Latin American technology company focused on creating impactful, human-centered software in partnership with companies around the world. Our remote-first culture is built on trust, continuous learning, collaboration, and strong engineering standards.
We're passionate about technology, but even more about the people behind it. If you're looking for an environment where your ideas matter, experimentation is encouraged, and your impact is tangible, welcome to Darwoft.
About the Role
We're looking for a Senior Fullstack Engineer with a strong frontend focus to join a high-impact international FinTech project building an internal .