Senior Full Stack Engineer

Bounteous is a global AI Services firm where agentic engineering and human experience converge to deliver transformative business outcomes for the enterprise. We help organizations design, build, and scale AI-driven products, platforms, and processes. With more than 5,000 team members worldwide, Bounteous delivers AI that sticks, powering adoption and outcomes that move organizations from experimentation to true transformation. Bounteous is backed by New Mountain Capital, a New York-based growth-oriented investment firm that emphasizes business building.

• Senior Engineer (Senior Full Stack Engineer)
• Contract
• Location: Mexico, Canada

Role Overview

We are looking for a Senior Full Stack Engineer with strong hands-on expertise in React, Node.js, and SQL who can take end-to-end technical ownership of an application .

The ideal candidate should be capable of looking beyond individual modules or development tasks and understanding the application as a whole—including frontend, backend, APIs, database, integrations, deployment, performance, and production support. The role requires a combination of hands-on development, technical ownership, problem-solving, and team guidance .

Experience

6+ years of software development experience, preferably in full-stack application development.

Strong hands-on experience with React, Node.js, JavaScript/TypeScript, and SQL .

Experience owning or playing a key technical role in medium-to-large applications.

Experience across the complete SDLC: requirements, design, development, testing, deployment, and production support.

Experience troubleshooting complex issues across frontend, backend, database, and integration layers.

Experience conducting code reviews and mentoring/guiding other engineers.

Must-Have Skills

React: Components, Hooks, state management, routing, reusable UI design, API integration, and frontend performance.

Node.js: Backend/service development, REST APIs, asynchronous programming, authentication/authorization, error handling, and logging.

SQL: Strong query-writing skills, relational database design, indexing, query optimization, and performance troubleshooting.

Strong proficiency in JavaScript and/or TypeScript .

Strong understanding of REST APIs, system integrations, and application architecture .

Knowledge of software design principles, coding standards, and design patterns.

Strong debugging, analytical, and problem-solving skills.

Ability to understand an application end to end and assess the impact of changes across the system.

Strong communication and collaboration skills.

Good-to-Have Skills

Experience with AWS, Azure, or GCP .

Knowledge of CI/CD pipelines and automated deployment practices.

Experience with unit, integration, and automated testing.

Exposure to microservices and distributed architectures.

Knowledge of application security and secure coding practices.

Experience with monitoring, logging, and observability tools.

Experience modernizing legacy applications and reducing technical debt.

Familiarity with Agile/Scrum development methodologies.

Responsibilities

Take end-to-end technical ownership of the application across React frontend, Node.js backend, SQL database, APIs, and integrations.

Design, develop, enhance, and maintain scalable and reliable application solutions.

Translate business requirements into appropriate technical designs and implementations.

Make technical decisions considering scalability, performance, security, maintainability, and reliability .

Actively contribute to development and handle technically complex implementation tasks.

Review code and designs to ensure engineering quality and adherence to standards.

Guide and mentor developers on implementation approaches and engineering best practices.

Identify and address technical debt, performance bottlenecks, architectural gaps, and security concerns.

Troubleshoot complex application and production issues and drive root-cause resolution.

Collaborate with Product, QA, DevOps, Architecture, and other stakeholders throughout the delivery lifecycle.

Ensure appropriate testing, monitoring, logging, documentation, and production readiness.

Continuously improve the overall quality, performance, stability, and maintainability of the application.

Key Expectation: This is a hands-on senior engineering role with application-level ownership . The candidate should be able to understand the complete application, independently drive technical solutions, contribute to coding, guide the development team, and ensure the long-term technical health of the application.