Junior Back-End Developer

Junior Back-End Developer (Full-time/Part-time; Lisboa; Hybrid/Remote)

Watt-IS is accelerating the energy transition through AI-powered solutions that empower utilities, energy retailers, and energy communities to optimize energy usage and reduce carbon emissions. We’re looking for a talented Junior Back-End Developer to support our existing micro-services architecture, develop new services and integrate them with our platforms.

Responsibilities:

- Develop new functionalities for existing and new projects

- Maintain existing and new projects

- Develop technical specifications based on functional requirements

Technical skills:

- Experience in database design and data modeling (ER Diagrams)

- Experience in querying and storing data in SQL (PostgreSQL, SQL Server) and/or NoSQL (MongoDB) databases

- Experience in developing, documenting and testing JSON-based REST Web APIs (FastAPI, Pydantic, Express.js)

- Experience using HTTP clients to interact with JSON-based REST Web APIs

- Experience with Git and Linux environments

- Familiarity with Ruby and Ruby on Rails (or similar frameworks like Laravel, Spring MVC)

- Understanding of Micro-services architecture

Requirements:

- Degree in Computer Science, Electrical or Electronics Engineering, or equivalent

- Excellent communication (written and oral) and interpersonal skills

- Fluent in English

- Proven ability to work creatively and analytically in a problem-solving environment

- Willingness to learn and adapt to new concepts, technologies and to collaborate with other team members

Nice to have:

- Experience developing static web pages with HTML, CSS and JavaScript

- Experience developing web apps with React and Tailwind CSS (or similar frameworks)

- Experience with data science, machine-learning and AI with Python, R or Matlab

- Familiarity with DevOps practices - Docker and Cloud-based services (Azure, AWS)

Send us your CV and motivation letter to

careers@watt-is.com with the subject “Junior Back-End Developer 25.12”.

Contacts and address

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Edifício Rainbow Rua Amélia Rey Colaço, nº40, sala 13 2790-017 Carnaxide