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React Frontend engineer

  • Hybrid
    • Lisbon, Portugal
  • Engineering

Job description

🚀 Role: React Frontend engineer (Medior/Senior)

đź“Ť Location: Lisbon (Hybrid)  

đź“… Start Date: January 2026 

đź’° Salary: Competitive with benefits 

Why Are We Hiring?  

 

As we continue to scale our expense management platform, we are looking for a talented Software Engineer to join our fast-paced and international engineering team. You will play a key role in modernizing one of our main products, through AI. This role is ideal for someone with a strong technical foundation who thrives in a collaborative and agile environment and loves to explore AI technology.  

 

đź’Ą What Will You Do:  

  • Designing, developing, and maintaining front end React applications, connecting to a .NET 8.0 backend, as part of an agile development team.  

  • Design scalable systems and write robust, maintainable code following best practices for software development.   

  • Contribute to architectural decisions and codebase improvements.  

  • Heavily rely on AI to quickly iterate and develop frontend solutions. 

  • Ensure quality via unit testing, code reviews, and continuous integration.  

  • Work closely with product managers and designers to bring product vision to life.  

  • Participate in regular sprints and collaborate cross-functionally with Backend Engineers, QA, DevOps, Support and Product teams.  

Job requirements

🧩 About You:  

 

Bachelor’s degree in Computer Science, Engineering, or equivalent experience. 

2-3 years of experience in frontend React development. 

A team player with strong problem-solving skills and attention to detail.  

🛠️ Tools Proficiency:   

  • Solid experience developing React based frontends. 

  • Experience with companywide design systems, both in using them in your everyday development and also contributing to their development. 

  • Experience in interacting with RESTful APIs 

  • Attention to testing, namely experience using Jest for unit test. 

  • Experience with React design patterns, State management, consuming RESTful APIs 

    Nice to havee:  

  • Experience in the fintech industry (or similar) is a plus. 

  • Familiar with Git, CI/CD pipelines  

  • Knowledge of .NET 8.0 (this is a frontend position, but you’ll be interacting with a .NET 8 backend) 

 

🤖 Analytical skills and AI proficiency: all team members are expected to demonstrate strong analytical capabilities and make smart use of AI tools, whatever helps them work smarter and drive results in their role.  

🌍 Language Skills: fluent English, any other language is a plus 

Why Join Mobilexpense? 

We’re not a giant enterprise. We’re a growing B2B SaaS scale-up with 3,000+ customers and big ambitions. Here, you’ll be empowered to build, test, and own your growth engine—without red tape or layers of approvals. 

  • Work with a diverse, international team (27 nationalities, 47% female representation) 

  • Direct access to leadership, flat structure, high transparency 

  • Offices in Belgium, Netherlands, Germany, Sweden, Portugal, and Romania 

  • A clear mission: make life easier for finance teams, HR, and employees across Europe

     

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