Full Stack C# Engineer with JavaScript Frameworks

Attention

• CVs must be submitted in English
• Good spoken English is required
• Candidates must be located in Brazil

About the Role

We are looking for an experienced Full-Stack Software Engineer to join our clients software engineering team on a contract basis. The team is responsible for maintaining and enhancing existing web applications and APIs, while also building new cloud-native features. Many of these features are being migrated from a legacy Windows desktop application, so the role places strong emphasis on a UX-led approach.

Key Responsibilities

• Design, develop, and maintain scalable web applications built on a microservices architecture, including analysing and producing design specifications from business requirements.
• Build and maintain services written in Node.js and C#, with a strong focus on modular, domain-driven design.
• Develop front-end components using Vue.js, Vite, PrimeVue, and modern frameworks such as Tailwind CSS. Experience with React is acceptable, with the expectation of ramping up on Vue.
• Collaborate with UX designers to assess the readiness of UX assets and implement user-centric features efficiently.
• Work with NoSQL databases such as MongoDB, structuring documents for performance, reliability, and loose coupling.
• Write and optimise complex SQL queries; design and refine relational database schemas.
• Improve the performance and scalability of database operations across both relational and document-oriented systems.
• Implement a range of automated tests including unit, integration, and end-to-end tests.
• Build and maintain software for both Windows and Linux environments.
• Refactor and modernise legacy software applications for cloud-native deployment within AWS using Docker and Kubernetes.
• Implement and maintain CI/CD pipelines for efficient delivery and deployment.
• Navigate ambiguity and make sound decisions in a fast-paced, agile environment.
• Communicate effectively within a remote-first team spread across US time zones.

Required Qualifications

• Strong command of English, excellent communication skills, and proven success in remote work environments.
• 5+ years (7+ preferred) of recent, hands-on full-stack development experience.
• Experience developing and maintaining commercially available SaaS applications.
• Strong proficiency in C# with ORMs (Entity Framework, PetaPOCO, or similar), Node.js, and Vue.js (or React).
• Expertise in modelling, optimising, and tuning relational (SQL Server preferred) and NoSQL (MongoDB or similar) databases for scalable, loosely coupled systems.
• Solid experience designing and working with microservices.
• Extensive experience with both Windows and Linux operating systems.
• Familiarity with AWS, Docker, Kubernetes, and CI/CD pipelines.
• Strong quality mindset and experience writing unit, integration, and functional tests.
• Proven ability to collaborate with UX teams and implement designs effectively.
• Demonstrated success in modernising and refactoring legacy applications.
• Ability to work independently and collaboratively within an agile team, with limited supervision.

Preferred Qualifications

Experience in porting desktop applications to web platforms.

Experience applying domain-driven design principles, including building and maintaining domain models, identifying entities and relationships, defining service boundaries, and analysing and developing design specifications from business requirements.