Senior Full Stack Engineer React / .NET (more front-end) (509)

Are you ready to progress in your international career? Join Ubiminds, a people-first company partnering with American software product companies to expand their global teams. We specialize in curating Latin American talent and providing full support as the employer of record to connect professionals with impactful opportunities.

You will be part of a US-based product company that develops digital interviewing and talent assessment solutions used worldwide.

Responsibilities

Our team is seeking a Senior Full Stack Software Engineer with expertise in React and experience with .NET (C#) technologies to join the Engineering (Integrations) team. In this role, you will contribute to coding cutting-edge human interaction software, particularly focusing on Enterprise-level SaaS Video Interview and/or chatbot platforms. You will collaborate with Software Engineers, QA Engineers, Product Managers, and Product Designers to integrate our platform with the HR tech ecosystem.

Requirements

• Proficient in building modern front-end applications using React.
• Experience working with .NET (C#) in production environments.
• Familiarity with Agentic Development practices and tools, such as Claude Code and Cursor.
• Hands-on experience with MS SQL or similar relational databases.
• Senior-level mindset with a strong sense of ownership and accountability.
• Ability to adapt to evolving requirements and navigate technical ambiguity.
• Excellent English communication skills, both written and verbal.
• Experience working in distributed teams.

Preferred Skills

• Knowledge of microservices architectures.
• Understanding of AWS cloud environments.
• Exposure to test automation practices.
• Proficiency in developing with Python using LangChain and Promptfoo.
• Experience with AWS AI-related services like Bedrock, SageMaker, Lex, Comprehend, or Rekognition.
• Familiarity with IaC tools such as Terraform.
• Exposure to Spec-Driven Development Practices and tooling like SpecKit and OpenSpec.

Team & Culture

• Join a collaborative engineering team focused on AI-agent features.
• Work in a supportive environment with senior engineers and technical leadership.
• Emphasis on product evolution and maintainability.

Company Culture

• People-focused environment that values continuous improvement.
• Embrace challenges with a positive attitude and commitment.
• Strong emphasis on teamwork, growth, and delivering quality services.
• Commitment to honesty, transparency, and openness in all situations.

Perks

• Receive benefits equivalent to full-time employees of the product-based company.
• Access full back-office support, including career guidance and HR services.
• Remote-first policy for a distributed team structure.
• Provided MacBook for work.
• Opportunities for growth and networking with technology professionals.
• English lessons with a native speaker for communication improvement.
• Opportunity for a Candidate Referral bonus.
• Feel free to utilize the Florianópolis headquarters for an office setup with weekly perks.

Hiring Process

1. Initial interview with Tech Recruiter to discuss the job opening and experience.
2. Technical Assessment.
3. Client Interview.
4. Job Offer.

Our hiring process may involve AI tools to aid in application review, resume analysis, or response assessments to support our recruitment team while final decisions are made by humans. For more details on data processing, contact us for further information.