🚀 What You'll Architect
As a Fullstack Developer (NestJS + React) at Keyrus, you will help architect and build modern web applications from the ground up, contributing across both backend and frontend layers. You will work closely with technical and business teams to transform requirements into scalable, secure, and maintainable solutions.
You will:
Design and develop backend services using Node.js and NestJS
Build and maintain modern web applications using React
Design and implement secure REST APIs and third-party integrations
Develop workflows, business processes, and state-machine-based solutions
Implement authentication and authorization using OAuth 2.0, OpenID Connect, JWT, and Microsoft Entra ID
Design and optimize PostgreSQL databases
Develop file ingestion and processing capabilities for Excel/CSV data
Apply security, observability, auditing, and logging best practices
Containerize applications using Docker/Podman
Participate in technical design, development, troubleshooting, testing, and continuous improvement
Collaborate with multicultural teams in an Agile environment
🧠 Who You Are
You enjoy solving complex problems and transforming business requirements into practical technical solutions.
You are comfortable working across both frontend and backend technologies and enjoy owning features end-to-end.
You thrive in collaborative environments but can also work autonomously when required.
You challenge assumptions, evaluate trade-offs, and propose scalable solutions.
You understand that software development goes beyond writing code and includes security, maintainability, and business value.
🛠️ What You Bring
Qualifications / Certifications
Bachelor's degree in Computer Science, Software Engineering, Computer Engineering, Information Systems, or related fields.
3+ years of experience developing web applications as a Fullstack Developer.
Strong experience with Node.js and NestJS
Experience developing modern frontend applications with React
Experience designing and consuming REST APIs
Knowledge of OAuth 2.0, OpenID Connect, JWT, and authentication mechanisms
Experience with Microsoft Entra ID (Azure Active Directory) is highly valued
Experience working with PostgreSQL
Experience with Docker and containerized environments
Understanding of Cloud deployment concepts
Experience working in Agile environments such as Scrum
Upper-Intermediate English level or higher
⭐ Nice-to-haves
Experience building applications from scratch
Experience designing workflow engines or state-machine-driven systems
Experience with event-driven architectures
Knowledge of asynchronous processing, retries, queues, and notification systems
Experience with AWS, Azure, or Google Cloud
Knowledge of CI/CD pipelines and deployment automation
Experience with Excel/CSV mass data processing
Experience implementing observability and distributed tracing solutions
Knowledge of enterprise security and auditability requirements
🎯 What Makes You Successful
Strong problem-solving and analytical thinking skills
Ability to convert business requirements into technical solutions
Excellent communication skills, with the ability to explain ideas clearly and collaborate across technical and business teams
Demonstrates curiosity, ownership, and a proactive mindset
Comfortable working in fast-paced and evolving environments
Ability to balance technical excellence with pragmatic delivery
Works effectively in multicultural and distributed teams
Focus on building scalable, secure, and maintainable solutions
Role Details
📍 Location: Colombia, Mexico, or Brazil
💼 Contract: Full-Time
🌐 Work Model: 100% Remote
🚀 Level: Mid-Senior to Senior
Rewards - What We Offer at Keyrus
100% remote work
International and multicultural projects
Opportunities to work with modern web technologies and cloud environments
Access to training programs and continuous professional development
Professional growth opportunities and internal mobility
A culture built on collaboration, innovation, and continuous learning
ABOUT KEYRUS
At Keyrus, we help organizations move from experimental AI to industrialized AI, from isolated agents to orchestrated systems, and from insight to execution. This is the discipline we call being an Architect of Intelligence. Designing the Operating System of the intelligent enterprise, where intelligence is embedded into the core of business processes to create sustainable value: we operationalize intelligence.
Powered by our proprietary Human Orchestrated Model™ (HOM), we architect reliable:
Intelligence Foundations
Human in Command governance
Performance Steering
To create intelligent environments where technology amplifies human capabilities and performance compounds over time.
With 30+ years of expertise and 2,800 employees across 28 countries, we help organizations go beyond transformation: to build adaptive, resilient, and continuously improving intelligent organizations.
AI does not transform businesses. Architected intelligence does.
Keyrus is listed on Euronext Growth Paris. (ALKEY – ISIN Code: FR0004029411 – Reuters: KEYR.PA – Bloomberg: ALKEY: FP).
For more information: www.keyrus.com
