Full Stack Engineer

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We're looking for a Senior Full Stack Engineer to join our team. Whether you're ready to embed with an established squad or help bootstrap a brand-new one, this is an opportunity to build impactful features across the stack with modern tools and a smart, collaborative team. You'll report to an Engineering Manager and work on real, high-impact initiatives.

Responsibilities

• Own end-to-end feature delivery—from UI/UX to API and database design.
• Build and maintain scalable React interfaces
• Architect and implement APIs using NestJS and Postgres
• Manage integrations with external services using internal credential/token management systems
• Design and implement secure OAuth 2.0 flows and SSO (Google, Microsoft, etc.)
• Contribute to and maintain our Docker/Kubernetes/Helm-based infrastructure
• Collaborate with designers, product managers, and engineers across the organization
• Write clean, maintainable, and well-documented code across the stack

About You
The essentials:

• 5+ years of full stack development experience
• Strong proficiency with TypeScript, React, NestJS, and Postgres
• Comfortable shipping across the entire stack—UI to DB.
• Experience with monorepo tooling (pnpm, turborepo, nx)
• Solid understanding of API authentication, credential management, and secure integrations with third-party services
• In-depth knowledge of OAuth 2.0, including implementation of valid auth flows and SSO
• Experience working with Docker, Kubernetes, and Helm in production environments
• Familiarity with domain-driven design or clean architecture patterns

Not a Must, But a Plus

• Experience with infrastructure as code (we use Terraform)
• Prior work in high-compliance environments (HIPAA, SOC2, etc.)
• Experience bootstrapping new squads or systems from scratch.
• AI/ML familiarity—especially implementing tools like LangChain or working with embeddings and RAG pipelines

Location Requirement:

• This is a remote role, but applicants must be based in Brazil and legally eligible to work in the country.

About Monks
Monks is the global, purely digital, unitary operating brand of S4Capital plc. With a legacy of innovation and specialized expertise, Monks combines an extraordinary range of global marketing and technology services to accelerate business possibilities and redefine how brands and businesses interact with the world. Its integration of systems and workflows delivers unfettered content production, scaled experiences, enterprise-grade technology and data science fueled by AI—managed by the industry's best and most diverse digital talent—to help the world's trailblazing companies outmaneuver and outpace their competition.

Monks was named a Contender in The Forrester Wave: Global Marketing Services. It has remained a constant presence on Adweek's Fastest Growing lists , ranks among Cannes Lions' Top 10 Creative Companies and is the only partner to have been placed in AdExchanger's Programmatic Power Players list every year In addition to being named Adweek's first AI Agency of the Year (2023), Monks has been recognized by Business Intelligence in its 2024 Excellence in Artificial Intelligence Awards program in three categories: the Individual category, Organizational Winner in AI Strategic Planning and AI Product for its service Monks.Flow. Monks has also garnered the title of Webby Production Company of the Year , won a record number of FWAs and has earned a spot on Newsweek's Top 100 Global Most Loved Workplaces 2023.

We are an equal-opportunity employer committed to building a respectful and empowering work environment for all people to freely express themselves amongst colleagues who embrace diversity in all respects. Including fresh voices and unique points of view in all aspects of our business not only creates an environment where we can all grow and thrive but also increases our potential to produce work that better represents—and resonates with—the world around us.