Senior Software Engineer (CRM+ Platform) - Remote - Latin America

FullStack; Mar del Plata; Remote; ARS 136,863,000 - 228,106,000; Full time

Benefits offered by this job

100% remote work

Competitive pay

Continuing education opportunities

Grow with startups and Fortune 500s

Job summary

FullStack seeks a senior software engineer to join client teams and contribute to AI-enhanced development. You will own major features from design to production, collaborating with designers, engineers, and customer success across projects.

Ideal candidates have 5+ years in software engineering, deep C#/.NET, and Azure experience, plus strong English communication skills. This is a 100% remote role offering education opportunities and exposure to Fortune 500 clients.

Qualifications

• 5+ years of professional software engineering experience with C#/.NET.
• 3+ years of professional experience with Vue; React/Angular transfers are acceptable.
• Advanced English is required.
• Four-year college degree required.
• Strong experience building and operating production systems on Azure.
• Solid experience with SQL Server: schema design, queries, performance.
• Hands-on experience with Claude Code in engineering workflow.

Responsibilities

• Integrate directly into the client’s team and work with designers and engineers daily.
• Own projects end-to-end from design through deployment and monitoring.
• Collaborate with Product, Design, and Customer Success across initiatives.
• Contribute to customer discovery conversations, RCAs, and demos as needed.
• Improve observability, testing, and CI/CD processes.

Skills

C#/.NET

Vue

React/Angular

Azure

SQL Server

CI/CD/DevOps

English (Advanced)

End-to-end ownership

Education

Bachelor's degree

Tools

Datadog

Playwright

Claude Code

Job description

About FullStack

FullStack is your AI-native engineering partner, built to turn AI capability into certainty. Most companies can demo AI; few can get it to production and prove what it produced. We close that gap with three capabilities, AI built into your products from the start, elite vetted talent who apply it, and transparent execution that shows value every step of the way. With now over 600 customers in North America, FullStack is one integrated partner for all your AI engineering needs. With FullStack, you move forward with confidence.

We’re Most Proud Of

• Offering life-changing career opportunities to talented software professionals across the Americas.
• Building highly-skilled software development teams for hundreds of the world’s greatest companies.
• Having delivered hundreds of successful custom software solutions, which have positively impacted the lives and careers of millions of users.
• Our 4.1-star rating on GlassDoor.
• Our client Net Promoter Score of 68, twice the industry average.

The Opportunity

• You will integrate directly into our client's team and work alongside their existing designers and engineers on a daily basis.

What We're Looking For

• 5+ years of professional software engineering experience, with deep expertise in C#/.NET.
• 3+ years of professional experience with Vue; React or Angular experience transfers well.
• Advanced English is required.
• Successful completion of a four-year college degree is required.
• Strong experience building and operating production systems on Azure.
• Solid experience with SQL Server - schema design, query optimization, and performance tuning.
• Genuine enthusiasm for AI-assisted development. Hands-on experience using Claude Code as part of your engineering workflow.
• A customer-first, product-minded approach to engineering.
• Passion for contributing to customer discovery conversations, root cause analyses (RCAs), and occasional customer demos.
• Experience working on CRM or data-intensive platforms is a strong plus.
• Experience working with Datadog, Playwright, and other observability and testing tools a plus.
• Excellent communication skills and comfort working cross-functionally with Product, Design, and Customer Success.
• A track record of owning projects end-to-end, from design through deployment and monitoring.
• Ability to work through new and difficult issues and contribute to libraries as needed.
• Ability to create and maintain continuous integration and delivery of applications.
• Forensic attention to detail.
• A positive mindset and a can-do attitude.
• Experience working on Agile/Scrum teams.
• Meaningful experience working on large, complex systems.
• Ability to take extreme ownership over your work. Every day is a challenge to ensure you are performing to the expectations you and your team have agreed upon.
• Ability to identify with the goals of FullStack's clients, and dedicate yourself to delivering on the commitments your team make to them.

Nice To Have

We’re Seeking Engineers Who Are AI-enthusiastic In Their Workflow. Professional Experience Or Personal Project Work With The Following Is a Significant Plus

• Cursor, Windsurf, or Google Antigravity.
• Claude Code, Gemini CLI, Codex, or Copilot CLI.

Work Authorization Requirements

• Applicants must be currently authorized to work in the country of this job posting on a full-time basis.
• FullStack will not sponsor applicants for work visas now or in the future.

What We Offer

• Competitive pay.
• 100% remote work.
• The ability to work with leading startups and Fortune 500 companies.
• Continuing education opportunities.
• Opportunity to grow and expand your career.

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