Full Stack Developer

Company Description

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.

Role Description

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.

Qualifications

• 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.

Key Responsibilities

• Maintain and evolve the
  AngularJS web application

, improving usability and performance.
- Build and maintain
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).

Technical Skills Required

• 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

(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.