Adentis Portugal
GraphQL Developer
Skills
10 days ago
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Important information
Contract type:
Permanent
Location:
7300 Portalegre, Portugal
Work mode:
Remote
Published on:
12 October 2026
What they need
With just over 10 years of experience in the Portuguese market, we share our DNA with more than 200 workers and position our offer according to 3 lines of service:
- Strategy (Outsourcing, NeXel, Team as a Service, Tech Academies);
- R&D (Bootcamps, POC, Tech Lab);
- Nearshore.
In ADENTIS, we focus on PEOPLE. This is our emotional salary:
- Great Work-Life balance;
- Very flexible organizational routine;
- Health benefits (for you and your family);
- Team Building activities;
- Over 300 protocols to offer you great discounts in different areas;
- Continuous professional development sponsored by our Training and Certification Department;
- Regular feedback on your performance through a personalized plan;
- Comprehensive career plan and progression involving assertive performance reviews.
Responsibilities:
Develop, implement, and maintain GraphQL APIs, ensuring performance, scalability, and reliability.
Design and manage GraphQL schemas, defining types, queries, mutations, and resolvers according to application requirements.
Integrate multiple data sources and services through APIs, enabling efficient access to related data through a single endpoint.
Optimize API performance by identifying and resolving latency issues, excessive queries, and unnecessary data transfer.
Ensure API security by implementing authentication, authorization, and data validation mechanisms.
Collaborate with frontend, backend, and architecture teams to define API contracts and integration solutions.
Implement unit and integration tests to ensure API quality, stability, and reliability.
Maintain technical documentation and support the continuous improvement of existing solutions.
Apply software development best practices, version control, and continuous integration processes.
You must have:
Professional experience developing and integrating GraphQL APIs.
Strong knowledge of GraphQL, including schemas, queries, mutations, resolvers, and error handling.
Experience developing backend APIs and services.
Knowledge of REST APIs and a clear understanding of the differences between REST and GraphQL architectures.
Experience integrating databases and external services.
Knowledge of API security, authentication, and authorization mechanisms.
Ability to analyse and optimize query performance and data access operations.
Experience implementing automated tests and using version control tools such as Git.
English C1 — mandatory , particularly for a fully remote international environment.
If you want to be part of a real People First organization, join us! Send your CV to [email protected]
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