Backend Data Developer

We are looking for a Backend Engineer to work fully remote in Portugal who's eager to embark on an exciting new opportunity! Apply here <endereço ocultado>

About KWAN
We connect IT professionals with projects that match their skills, professional experience, and goals, then we offer a career progression program, delivered by in-house specialists - our People Experience Partners - to guide them through our journey with us.

 What is this challenge about: 

• Design, develop, and maintain backend services and APIs for complex enterprise SaaS applications;
• Implement GraphQL APIs, integrate third-party services, and work with data stores (e.g., MongoDB) for document, search, and vector data;
• Collaborate with data, frontend, and infrastructure teams to deliver end-to-end features;
• Write high-quality, maintainable code primarily in TypeScript and Python;
• Optimize backend systems for performance, scalability, and reliability;
• Build and maintain automated test frameworks to ensure code quality;
• Monitor and troubleshoot backend services, resolve production issues, and participate in on-call support when required;
• Document architecture, processes, and best practices to ensure maintainability and team alignment.

Does it sound exciting? Apply now!  <endereço ocultado>

What we are looking for:

• +6 years of experience as a backend engineer;
• Proven experience building and maintaining backend services and APIs for large-scale, enterprise SaaS applications;
• Proficiency in TypeScript and Python, with experience developing and exposing APIs (GraphQL or REST);
• Hands-on experience with databases, preferably MongoDB or similar document-oriented systems;
• Familiarity with cloud-based architectures (AWS, Azure, or GCP) and related backend services such as Lambdas, containers, and messaging systems;
• Understanding of software engineering fundamentals, systems architecture, and security best practices;
• Experience with automated testing frameworks and CI/CD pipelines;
• Fast learner, adaptable to new technologies and evolving requirements;
• Clear communicator and effective collaborator with cross-functional teams;
• Strong ownership mindset, taking responsibility for the quality and reliability of delivered solutions;
• Fluency in English (minimum B2).

Nice to have

• Experience integrating AI frameworks (e.g., LangChain, LangGraph) into backend systems;
• Exposure to building and maintaining production data pipelines;
• Experience working in high-growth or product-focused SaaS companies;
• Familiarity with monitoring, logging, and alerting for distributed systems.

Do you meet most of the position requirements? Then grab this opportunity and apply now! <endereço ocultado>

What we offer

• A project that matches your skills and ambitions, as well as your preferences for working policies and culture;
• A competitive salary with awesome benefits and opportunities to leverage your knowledge and network to earn additional income;
• An empowering and respectful work culture enriched with social and learning events;
• A People Experience Partner specially assigned to you - your go-to career guide, responsible for supporting your growth, facilitating training, and ensuring your work-life balance at KWAN.

Some Words From Our Colleagues
“At KWAN, they make sure that I feel comfortable with the client I’m working for and that what I’m doing aligns with my career aspirations.” - Luis Caldeira, DevOps @ KWAN

Does it sound exciting? Apply now! <endereço ocultado>

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