About this role.
Monks is seeking a Senior Full Stack Engineer to deliver high-impact product features across user interfaces, APIs, databases, integrations, and platform infrastructure. The role centers on TypeScript, React, NestJS, and Postgres, with production experience in Docker, Kubernetes, and Helm expected. The engineer will implement secure OAuth 2.0 and SSO integrations while collaborating closely with product, design, and engineering stakeholders. This is a remote full-time position restricted to applicants based and legally eligible to work in Brazil.
Role DNA
A quick view of the complexity, pace, ownership and collaboration implied by the job description.
Job Complexity
4/5Pace & Pressure
4/5Autonomy Level
4/5Communication Load
4/5Salary analysis
Estimated compensation compared with the broader US market for similar roles.
Core skills
Skills and capabilities most closely associated with this opportunity.
Cover letter sample
Dear Hiring Team,
I am excited to apply for the Senior Full Stack Engineer role at Monks. My experience delivering end-to-end web products with TypeScript, React, API services, and relational databases aligns well with the opportunity to build impactful features across the stack.
I bring a security-minded approach to third-party integrations, OAuth 2.0, SSO, and maintainable system design, along with practical experience collaborating across product, design, and engineering teams. I would welcome the opportunity to help Monks build reliable, scalable solutions while contributing to a collaborative and high-performing squad.
Sincerely,
[Your Name]
Sample interview questions
I would begin by clarifying user outcomes, edge cases, authorization rules, and acceptance criteria with product and design. I would define API contracts and the data model early, implement migrations and backend validation, then build the React experience against stable interfaces. I would use code reviews, automated tests, observability, and a staged rollout to validate the feature safely in production.
I would use the appropriate flow for the client type, typically Authorization Code with PKCE for browser-based applications. I would validate redirect URIs, state and nonce values, token issuer, audience, signature, expiry, and scopes, while keeping credentials and refresh tokens out of client-side storage where possible. Secrets should be managed through approved credential systems, and the integration should have audit logging, least-privilege scopes, and clear token revocation behavior.
I prefer clear module boundaries aligned to business domains, with controllers kept thin and application services responsible for use cases. Domain logic should not be tightly coupled to database or third-party providers, so repositories and adapters can isolate infrastructure concerns. Shared contracts, validation, consistent error handling, tests, and dependency injection help preserve maintainability as teams and services expand.
I would first assess user impact and stabilize the system through rollback, scaling, or feature-flag controls if needed. Next, I would inspect application logs, metrics, traces, pod events, deployment changes, resource limits, and dependency health to form and test a hypothesis. After resolving the issue, I would document the root cause and implement preventive actions such as alerts, regression tests, runbook updates, or infrastructure configuration changes.
I would establish the problem statement, success metrics, ownership boundaries, and a thin vertical slice that delivers value quickly. I would align the team on architecture principles, development workflow, quality gates, environments, observability, and security expectations without over-engineering the initial release. Regular demos, technical decision records, and iterative feedback would keep the squad aligned while allowing the system to evolve based on real needs.
Please note that we will never request payment or bank account information at any stage of the recruitment process. As we continue to grow our teams, we urge you to be cautious of fraudulent job postings or recruitment activities that misuse our company name and information. Please protect your personal information during any recruitment process. While Monks may contact potential candidates via LinkedIn, all applications must be submitted through our official website (monks.com/careers).
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:
- 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.
#LI-VM1
About Monks
Monks is the global, digital-first, data-driven, unitary operating brand of S4 Capital plc. With a legacy of innovation and specialized expertise, Monks combines an extraordinary range of global Marketing and Technology Services to redefine how brands interact with the world. Through Monks.Flow, its flagship AI ecosystem for marketing orchestration, Monks transforms marketing into a growth engine, collapsing timelines and connecting brands to culture in real time. By deploying bespoke intelligent agents across disciplines and delivering culturally relevant, high-impact creative and digital solutions, Monks solves key critical business challenges across the entire brand enterprise to help brands sustain long-term impact.
Monks was named a Contender in The Forrester Wave™: Global Marketing Services, ranks among Cannes Lions’ Top 10 Creative Companies (2022-25) and remains the only partner featured in AdExchanger’s Programmatic Power Players list every year (2020-24). Named Adweek’s first AI Agency of the Year (2023) and The One Show’s inaugural AI Pioneer Organization, Monks was also awarded Business Intelligence Group’s 2025 Excellence in Artificial Intelligence Award in both the Organizational and AI Product categories. As a trusted partner to cutting-edge innovators in tech, Monks earned titles such as Optimizely Experimentation Partner of the Year (2025), runner-up for the Adobe Firefly Partner Award (2024), and Workato’s AI Visionary Customer Impact Award (2024). Additionally, Monks achieved a record-breaking number of FWAs and continues to hold the most of any partner.
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.
Annual salary information is not provided for this position. Explore salary ranges for similar roles in our Salary Directory ›
Upload your resume now
- To unlock remote work opportunities and be discovered by global employers.
This job listing has been manually reviewed by the Jobicy Trust & Safety Team for compliance with our posting guidelines, including verification of the company's legitimacy, accuracy of job details, clarity of remote work policy, and absence of misleading or fraudulent content.
