Senior Fullstack Developer (React/Node JS)

Applaudo; México; Presencial; MXN 900.000 - 1.400.000; Jornada completa

Descripción de la vacante

Applaudo is seeking a Senior Full Stack Developer to design, build, and scale production-grade applications across modern frontend and cloud-native backend environments. You will work with TypeScript end-to-end, from rich user interfaces to serverless services and data modeling.

You’ll contribute within established architectures, uphold engineering standards, and own deployments with a focus on reliability, testing, and secure development practices.

Formación

• Bachelor's degree or equivalent professional experience.
• Extensive full stack development with frontend and backend.
• Proficient in modern web apps using React 19 and related libs.
• Experience building serverless apps on AWS (Lambda, API Gateway, DynamoDB).
• Strong NoSQL data modeling, esp. DynamoDB Single-Table Design.
• RESTful APIs with OpenAPI and Zod schema validation.
• IaC with AWS CDK and IAM concepts.
• CI/CD and code quality tools in pipelines.
• Unit testing with Vitest; API and E2E testing with Playwright/Postman.
• Secure coding practices for PII/PCI.

Responsabilidades

• Design and maintain production-quality full-stack apps using TypeScript, React, Node.js.
• Build frontend features with React 19 and supporting libraries.
• Develop AWS serverless backends with Lambda, API Gateway, DynamoDB.
• Model DynamoDB data using Single-Table Design.
• Implement REST APIs with OpenAPI and Zod validation.
• Manage cloud infrastructure with AWS CDK and secure practices.
• Develop unit tests with Vitest and support API/E2E testing.
• Apply secure coding to protect sensitive data.
• Own deployments, debugging, and system reliability.
• Collaborate with cross-functional teams to meet requirements.

Conocimientos

Full stack development

English fluency

Agile methodologies

Problem solving

Educación

Bachelor’s degree in CS/IT/SE

Herramientas

React 19

TanStack Router/Query

Mantine/Zustand

AWS Lambda/API Gateway/DynamoDB

OpenAPI + Zod

AWS CDK/IAM

Bitbucket Pipelines/SonarCloud/ESLint

Vitest/Playwright/Postman

Descripción del empleo

You are a Senior Full Stack Developer who enjoys building scalable, reliable, and high-performing applications across modern frontend and cloud-native backend environments. You bring a strong engineering mindset and enjoy working with TypeScript across the entire stack, from creating intuitive user experiences to developing serverless services and designing efficient data models.

You are comfortable working within established architectures, following engineering standards, and taking ownership of the solutions you deliver. You value clean, maintainable code, automated testing, and secure development practices. You thrive in collaborative environments, adapt quickly to evolving technical challenges, and approach troubleshooting and continuous improvement with autonomy and accountability.

You bring to Applaudo the following competencies:

• Bachelor’s Degree in Computer Science, Information Technology, Software Engineering, or a related field is desired, or equivalent professional experience.
• Strong professional experience in Full Stack Development, delivering production-grade applications across frontend and backend environments.
• Strong experience developing modern web applications using React, preferably React 19, and libraries such as TanStack Router, TanStack Query, Mantine, or Zustand.
• Proven experience developing serverless applications on AWS, including Lambda, API Gateway, and DynamoDB.
• Strong knowledge of NoSQL data modeling, particularly DynamoDB Single-Table Design and access-pattern optimization.
• Experience designing and developing RESTful APIs using OpenAPI specifications and Zod for schema validation.
• Experience with Infrastructure as Code using AWS CDK and understanding of AWS IAM concepts.
• Familiarity with CI/CD pipelines and code quality tools such as Bitbucket Pipelines, SonarCloud, and ESLint.
• Experience developing unit tests using Vitest and supporting automated API and end-to-end testing with tools such as Playwright and Postman.
• Knowledge of secure coding practices, including PII and PCI security requirements.
• Experience working with Spec-Driven Development methodologies and tools such as Kiro.
• Strong troubleshooting and root-cause analysis skills, with ownership of application deployment, reliability, and maintenance.
• Ability to work autonomously within established architectural patterns, technical standards, and Architecture Decision Records (ADRs).
• Strong communication, collaboration, and problem-solving skills, with the ability to contribute effectively within Agile development teams.
• Fluent English proficiency, both written and spoken.

Nice to Have:

• Experience working with SQL Server, particularly in data synchronization or integration environments.
• Experience with OpenSearch Serverless.
• Knowledge of event-driven architectures using Amazon EventBridge.
• AWS certifications at the Associate level or higher.

You will be accountable for the following responsibilities:

• Design, develop, and maintain production-quality full-stack applications using TypeScript, React, and Node.js.
• Build modern frontend features using React 19 and supporting libraries such as TanStack Router, TanStack Query, Mantine, and Zustand.
• Develop and maintain AWS serverless backend services using Lambda, API Gateway, and DynamoDB.
• Design and optimize DynamoDB data models using Single-Table Design and application access patterns.
• Implement RESTful APIs and validate inputs and outputs using OpenAPI-driven Zod schemas.
• Provision and maintain cloud infrastructure using AWS CDK while following established deployment and security practices.
• Develop automated unit tests using Vitest and support API and end-to-end testing activities following established QA patterns.
• Apply secure coding practices to protect sensitive personal and payment information.
• Take ownership of application deployments, production troubleshooting, root-cause analysis, and system reliability.
• Collaborate with Engineering, QA, and Product teams to deliver high-quality solutions aligned with business requirements.
• Follow established architecture decisions, coding standards, CI/CD workflows, and code quality practices.
• Participate actively in Agile ceremonies, including sprint planning, daily stand-ups, and retrospectives.
• Contribute to continuous improvements in application performance, maintainability, and engineering practices.

Additional Information

About Us

We Are Engineered Different.

At Applaudo, talented people design, build, and scale meaningful, AI-powered solutions that create real business impact. As an AI-native organization, we collaborate across design, development, cloud, data, and artificial intelligence to turn ideas into scalable products that transform how companies operate, make decisions, and grow.

We are building a high-performance culture grounded in five values: Empowering Excellence, Collaborative Teamwork, Unsolicited Respect, Consistent Transparency, and Efficient Communication. These define how we work, how we support one another, and how we hold ourselves accountable.

Applaudo is a place for people who want to learn fast, take ownership, and work alongside strong teams they are proud to belong to. Joining us means being part of an organization that is evolving intentionally, investing in modern ways of working, and leading AI-native transformation at scale.