Full Stack Developer

We are seeking a Full Stack Developer for a full-time, on-site role at our Barcelona headquarters. The Full Stack Developer will design, develop, and maintain both front-end and back-end functionalities for our web-based projects. Day-to-day responsibilities include writing clean and efficient code, ensuring system reliability, collaborating with cross-functional teams, and integrating technologies to enhance user experience. The role also involves identifying and addressing technical issues and implementing new features to meet client requirements., * Maintain and evolve the AngularJS web application, improving usability and performance.

• Build and maintain Node.js services and APIs (REST) that support the IoT platform.
• Integrate and work with MQTT brokers (publish/subscribe patterns, topics, QoS, retained messages).
• Implement features related to device onboarding/provisioning, telemetry processing, and event-driven workflows.
• Design data models and persistence for IoT data (operational + historical), optimizing for performance.
• Implement real-time UI updates (e.g., WebSockets / SSE) for dashboards and monitoring views.
• Ensure secure communication patterns (authentication/authorization, token handling, secure API design).
• Collaborate with DevOps and product teams to ship reliable features (CI/CD, observability, deployments).

• Experience in Front-End Development, including familiarity with HTML, CSS, and JavaScript frameworks.
• Proficiency in Back-End Web Development and Full-Stack Development, with experience in server-side scripting and database management.
• Strong skills in Software Development, demonstrating the ability to design and build efficient, scalable, and robust applications.
• A solid understanding of modern software development best practices and methodologies.
• Excellent problem-solving skills and the ability to work collaboratively in a dynamic environment.
• Bachelor's degree in Computer Science, Software Engineering, or a related field.
• Familiarity with agile development processes and DevOps practices is a plus.
• Proficiency in English, and additional knowledge of Spanish is an advantage., * 2-5 years of experience in full stack software development.
• Strong experience with JavaScript/TypeScript.
• Solid experience with AngularJS (or proven background maintaining frontend frameworks).
• Strong backend experience with Node.js (Express or similar).
• Experience designing and integrating APIs.
• Experience with databases (SQL/NoSQL): PostgreSQL, MongoDB, Redis (or equivalent).
• Proficiency with Git and collaborative workflows.
• Experience with Docker and containerized deployments.
• IoT fundamentals: telemetry, device connectivity, event-driven systems.

Nice-to-haves

• Hands-on experience with IoT platforms in production environments.
• MQTT knowledge (broker concepts, QoS, topics, pub/sub patterns). Knowledge of additional protocols/standards: AMQP, CoAP, OPC UA, industrial gateways, etc.
• Experience with time-series or IoT-oriented storage: TimescaleDB, InfluxDB (or similar).
• Cloud IoT ecosystems: AWS IoT / Azure IoT / GCP IoT (or equivalent services).
• Security in IoT contexts (TLS, certificates, device identity, secure provisioning).
• Observability tooling (logs/metrics/tracing) and performance tuning.
• Agile/Scrum experience.

This position is for you if you…

• Enjoy building real-world products that connect devices, data, and users.
• Feel comfortable working with legacy frontend codebases and improving them incrementally.
• Like backend challenges around real-time data, scalability, and reliability.
• Communicate clearly and collaborate effectively across teams.
• Are proactive, detail-oriented, and eager to learn.
• Are fluent in Spanish and English.

What we offer

? A young, talented team and a growth-oriented environment.

? Flexible hours and hybrid work.

? Full-time contract.

? English classes for continuous development.

Mingothings International (MTi) is a global leader in digital transformation, helping companies achieve their technological goals through innovation and expert collaboration. Headquartered in Barcelona, MTi has a strong global presence with implementations across Dubai, Kuala Lumpur, Nairobi, Mexico City, and Riyadh. Specializing in areas such as Smart Cities, Traffic & Mobility, Energy, and IoT, MTi drives value through engineering development and integration. As part of the Affluence Corporation (AFFU), MTi plays a pivotal role in creating connected ecosystems for governments, businesses, and integrators worldwide.