Full-Stack Developer React + RoR

Job Description
Honeywell’s Security and Access Solutions business provides high-value security products and services that are critical for buildings around the globe. You will be joining our engineering team to help build a cloud-based unified security solution.

As a Software Engineer, you will join a cross-functional delivery team working on our cloud-based security platform. You will work under the guidance of senior engineers to develop features, fix bugs, and improve the user experience of our products. This role is focused on professional growth, learning best practices in software development, and contributing high-quality code to our modern web applications.

Responsibilities

• Implement user interface components and features using JavaScript and TypeScript
• Write clean, maintainable code and unit tests for web applications
• Collaborate with senior engineers to understand requirements and technical designs
• Participate in code reviews to learn from peers and improve coding standards
• Assist in troubleshooting and resolving software defects

Qualifications
MUST HAVE

• Bachelor´s degree completed
• English proficiency
• Willingness to work in Mexico City (Hybrid)
• 1 year of experience
• Strong knowledge of JavaScript and TypeScript fundamentals
• Understanding of modern web development concepts (HTML5, CSS3, DOM manipulation)
• Familiarity with React. JS or similar modern frontend frameworks
• Understanding of RESTful APIs
• Good problem-solving skills and attention to detail
• Ability to work well in a collaborative team environment

WE VALUE

• Experience with cloud platforms (Azure, AWS, GCP) and serverless architecture
• Experience with version control systems (Git)
• Exposure to Node.js and backend development concepts

#SaaSTalentHoneywellMx
About Us
Honeywell helps organizations solve the world's most complex challenges in automation, the future of aviation and energy transition. As a trusted partner, we provide actionable solutions and innovation through our Aerospace Technologies, Building Automation, Energy and Sustainability Solutions, and Industrial Automation business segments – powered by our Honeywell Forge software – that help make the world smarter, safer and more sustainable.

Job Description
Honeywell’s Security and Access Solutions business provides high-value security products and services that are critical for buildings around the globe. Building operators and security teams across dynamically evolving verticals depend on our mobile- and cloud-enabled technologies for access control, intrusion detection, and locking solutions to help create safer and more efficient facilities.

You will be joining one of our most strategic initiatives to build a cloud-based software-as-a-service unified security solution supporting access control, video, and monitoring capabilities. As part of the engineering team, you will be a key contributor to our continuous delivery team, taking ownership of specific features and modules within our unified security solution. You will work independently on development tasks while collaborating with the team on design and architecture. This position requires a solid foundation in web development and the ability to translate requirements into working software.

Responsibilities

• Design and develop robust frontend features using React and TypeScript
• Integrate frontend applications with backend RESTful services
• Participate in feature planning and estimation within an Agile environment
• Debug complex issues across the web application stack
• Mentor junior engineers and contribute to code quality through peer reviews
• Maintain and refactor existing codebases to improve performance and maintainability

Qualifications
MUST HAVE

• 3 years of experience developing modern web applications
• Proficiency in JavaScript and TypeScript
• Solid experience with React.js and its core principles (Hooks, State Management)
• Experience consuming RESTful web services and working with asynchronous data
• Experience writing unit and integration tests (e.g., Jest, React Testing Library)
• Strong written and verbal communication skills in English

WE VALUE

• Experience with cloud platforms (Azure, AWS and GCP)
• Knowledge of CI/CD pipelines and DevOps practices
• Experience with Node.js and server-side JavaScript
• Familiarity with video player libraries

#SaaSTalentHoneywellMx
About Us
Honeywell helps organizations solve the world's most complex challenges in automation, the future of aviation and energy transition. As a trusted partner, we provide actionable solutions and innovation through our Aerospace Technologies, Building Automation, Energy and Sustainability Solutions, and Industrial Automation business segments – powered by our Honeywell Forge software – that help make the world smarter, safer and more sustainable.

Position Overview

We are seeking a talented and adaptable
Full Stack Developer
to join our growing product and engineering team in
Mexico City
. In this role, you will take end-to-end ownership of feature development—from building intuitive, responsive user interfaces to designing scalable server-side architectures and APIs.

Working in a flexible hybrid model, you will collaborate closely with product managers, UI/UX designers, and DevOps engineers to ship high-impact features. The ideal candidate thrives across the entire web stack, brings strong problem-solving skills, and enjoys driving product initiatives from concept to deployment.

Key ResponsibilitiesFrontend Development

• UI/UX Implementation: Build responsive, high-performance, and accessible web applications using modern frontend frameworks (React, Next.js, Vue.js, or Angular).
• State & Performance Management: Optimize frontend performance, client-side caching, cross-browser compatibility, and state management (Redux, Zustand, React Query).
• Design Systems: Collaborate with product designers to implement reusable UI component libraries and maintain design system integrity.

Backend Development & API Architecture

• API Design: Build and maintain secure, well-documented RESTful and/or GraphQL APIs and microservices.
• Server-Side Logic: Write scalable, maintainable server code using Node.js/TypeScript, Python, Java, or C#/.NET.
• Database Management: Design database schemas, write efficient queries, and manage data integrations across relational (PostgreSQL, MySQL) and non-relational (MongoDB, Redis) databases.

Operations, Testing & Quality

• Cloud & DevOps Integration: Deploy features using containerized environments (Docker) and integrate with cloud platforms (AWS, GCP, Azure) via CI/CD pipelines.
• Testing: Write unit, integration, and end-to-end tests (Jest, React Testing Library, Cypress, Playwright) across both frontend and backend layers.
• Agile Collaboration: Participate actively in sprint planning, code reviews, daily standups, and architecture alignment sessions with global team members.

Qualifications & ProfileTechnical Requirements

• Experience: 3+ years of professional software engineering experience delivering full stack production applications.
• Frontend Tech Stack: Proficiency in JavaScript/TypeScript and modern frameworks:

• React / Next.js (Preferred), Vue.js, or Angular.
• Modern CSS frameworks (Tailwind CSS, Styled Components, SASS).

• Backend Tech Stack: Hands-on experience with at least one core backend language/framework:

• Node.js (Express / NestJS) OR Python (FastAPI / Django) OR Java / Kotlin (Spring Boot).

• Databases & APIs: Solid understanding of relational SQL (PostgreSQL, MySQL) or NoSQL databases, along with REST/GraphQL API patterns.
• Tooling: Familiarity with Git workflows, Docker, and CI/CD pipelines.

Language & Hybrid Setup Requirements

• Bilingual Proficiency: Professional working proficiency in English and Spanish (spoken and written English required for global/US stakeholder alignment).
• Location: Must reside in or be willing to commute to Mexico City for scheduled in-office days.

Preferred Qualifications

• Experience with server-side rendering (SSR) frameworks like Next.js.
• Familiarity with cloud platforms (AWS Lambda, S3, ECS, or GCP/Azure equivalents).
• Bachelor’s degree in Computer Science, Software Engineering, or equivalent practical experience.

SEGULA Technologies is a global engineering group, boosting the competitiveness of all major industrial sectors: automotive, aerospace, energy, rail, naval, life sciences, and telecoms. With a presence in more than 30 countries and 140 locations worldwide, the Group prioritizes close relationships with its clients, driven by the expertise of its 15,000 employees. As a leading engineering player putting innovation at the heart of its strategy, SEGULA Technologies manages large-scale projects, ranging from initial studies to industrialization and production. SEGULA TECHNOLOGIES is dedicated to gender balance and diversity, recognizing and recruiting talent of all backgrounds.

At Cognizant we have an ideal opportunity for you to be part of one of the largest companies in the digital sector worldwide. A Great Place To Work where we look for people who contribute new ideas, experiencing a dynamic and growing environment. At Cognizant we promote an inclusive culture, where we value different perspectives providing career growth and development opportunities. #WelcomeToCognizant!

Qualifications

• +5 years of experience as developer
• Strong experience in ReactJS, JavaScript (ES6+), TypeScript, HTML5, and CSS3
• Hands-on experience in building scalable, responsive, and reusable UI components
• Strong understanding of React ecosystem, including Redux, Context API, Hooks, and React Router
• Experience in integrating REST APIs and/or GraphQL APIs
• Hands-on experience with AWS Cloud Services (S3, CloudFront, API Gateway, Lambda, Cognito, DynamoDB)

ADVANCED ENGLISH IS A MUST

Hybrid role in any of our 4 locations: Guadalajara, CDMX, Monterrey or Queretaro

Key Responsibilities

Design, develop, and maintain modern web applications using ReactJS.

Build reusable, scalable, and high-performance frontend components.

Integrate frontend applications with REST and GraphQL APIs.

Develop and deploy cloud-native solutions on AWS.

Implement CI/CD pipelines and automate deployment processes.

Collaborate with UX, backend, and product teams to deliver high-quality solutions.

Optimize application performance, security, and scalability.

Why Cognizant?

Improve your career in one of the largest and fastest growing IT services providers worldwide

Receive ongoing support and funding with training and development plans

Have a highly competitive benefits and salary package

Get the opportunity to work for leading global companies

We are committed to respecting human rights and build a better future by helping your minds and the environment

We invest in people and their wellbeing.

We create conditions for everyone to thrive. We do not discriminate based on race, religion, color, sex, age, disability, nationality, sexual orientation, gender identity or expression, or for any other reason covered.

At Cognizant we believe than our culture make us stronger!

Join us now!