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ultima milla logo
ultima milla

Logistic Management System for E-commerce & Retail in Mexico. Raised +$7M USD from Y Combinator, FJLabs, & more.

Fullstack Developer, Mid-level

Full-stack EngineerSoftware EngineerFull TimeRemoteSeniorTeam 51-200H1B No SponsorCompany SiteLinkedIn

Location

Brazil

Posted

118 days ago

Salary

0

Seniority

Senior

Job Description

Fullstack Developer, Mid-level

ultima milla

• Design, develop and maintain RESTful APIs in .NET 8+ / ASP.NET Core, ensuring performance, scalability and adherence to industry best practices. • Build and evolve integrations with e-commerce platforms and marketplaces (Shopify, Mercado Livre, among others), using REST, GraphQL and OAuth 2.0. • Develop and maintain modern web interfaces using Vue.js, TypeScript, HTML5 and CSS3, with a focus on componentization, responsiveness and user experience. • Implement and maintain integrations with carriers and logistics partners for quoting, tracking and label generation. • Work on end-to-end implementations, from API design to production delivery, including containerization with Docker and deployment on Kubernetes. • Develop unit and integration tests (xUnit) as part of the continuous development and quality cycle. • Instrument services with observability, structured logging and monitoring via Datadog APM for troubleshooting and production support. • Contribute to technical documentation, Swagger/OpenAPI, changelogs and best practices for maintenance and support. • Actively participate in agile ceremonies, code reviews and continuous improvement initiatives alongside Engineering and Product teams.

Job Requirements

  • Strong experience in backend development with .NET / ASP.NET Core, working on building and supporting APIs and integrations.
  • Experience with AWS services, including S3, SQS, Lambda and other resources for scalable, distributed applications.
  • Experience with containers and orchestration using Docker and Kubernetes in development and production environments.
  • Knowledge of observability and monitoring with tools like Datadog, New Relic, Grafana and similar solutions.
  • Experience with third-party integrations, including e-commerce, marketplace and carrier APIs.
  • Familiarity with GraphQL, REST APIs and authentication/authorization flows using OAuth 2.0.
  • Knowledge of CI/CD, deployment automation and DevOps practices focused on quality and continuous delivery.
  • Experience with componentized frontends using Vue.js, React or similar frameworks.
  • Experience with version control using Git and collaboration in agile environments.
  • Technical English for reading documentation, troubleshooting and asynchronous communication with global teams.

Benefits

  • 100% remote
  • International work environment.

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