Senior Fullstack Developer – Backend Focus

Zipdev

. Design, develop, test, and refine software implementations for a product environment .

Posted 9/18/2026contractRemote • Colombia, Mexico, BrazilSeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates extensive experience in backend development with .NET and C#, along with strong proficiency in React and SQL database management. Capable of developing AI-enabled features and maintaining high standards of software quality through effective testing and documentation practices.

Highest-signal resume keywords

Backend Development With .NET / C#React Frontend DevelopmentSQL Database DevelopmentAI Technologies Including LLMsTechnical Documentation Skills

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Software DevelopmentRESTful API DevelopmentUnit TestingSoftware Design PatternsMVC and MVVM PatternsJavaScriptHTML5CSS3JSONXML

Soft Skills

Analytical Problem-SolvingWritten Communication

Tools & Technologies

Claude CodeGitSVN

Industry Keywords

Product Development EnvironmentDistributed ArchitecturesAsynchronous Request HandlingBrowser-Based ApplicationsResponsive Web Applications

Tech Stack

Tools & technologies

JavaScriptReactSQLSubversion.NET

About the role

Key responsibilities & impact

Design, develop, test, and refine software implementations for a product environment
Build and maintain backend services and APIs using .NET while contributing to the React frontend
Develop AI-enabled capabilities, including LLM-powered features, intelligent workflows, automation, recommendations, and integrations with AI platforms/APIs
Write clean, maintainable, well-documented, and unit-testable code
Develop and maintain unit tests using Test-Driven Development and other appropriate testing practices
Use Claude Code in the development workflow, including mandatory Claude-assisted code reviews
Participate in formal code reviews and make improvements based on feedback
Create software implementation designs and technical documentation
Develop architecture documentation, database schema diagrams, entity relationship diagrams, and sequence diagrams
Work with SQL databases, including database design and data-related implementation
Participate in planning sessions and provide development estimates
Demonstrate completed implementations to stakeholders and incorporate feedback
Develop software installation packages for customer workstations and servers when required
Identify opportunities to improve code quality, development practices, performance, and maintainability
Contribute to technical problem-solving and the design of practical, scalable solutions
Collaborate with the Development Manager, Product Owner, Interaction Design team, and other stakeholders

Requirements

What you’ll need

8+ years of professional software development experience
Strong experience developing software products in a product development environment
Strong backend development experience with .NET / C#
Strong hands-on experience with React
Strong knowledge of JavaScript, HTML5, and CSS3
Experience developing and consuming RESTful APIs
Strong SQL and database development experience
Experience with JSON and XML data structures
Experience with distributed architectures and asynchronous request handling
Strong understanding of software design patterns and modern software architecture
Experience with MVC and MVVM patterns
Experience writing and maintaining unit tests for own code
Strong understanding of software quality, maintainability, and development best practices
Experience with Git or SVN
Experience with browser-based and responsive web applications
Practical experience with AI technologies, including Large Language Models (LLMs), Agentic AI, and/or Machine Learning
Experience using Claude Code, including AI-assisted development and code review workflows
Strong technical documentation and written communication skills
Analytical and pragmatic approach to problem-solving
Must be based in Latam

Benefits

Comp & perks

Work remotely Monday - Friday, 40 hours a week (no weekends)
Remote work arrangement