Senior Full Stack Engineer .NET / React (554)

Info on the Senior Fullstack Engineer .NET / React role

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Ubiminds is a GPTW-certified, people-first company that partners with American software product companies to scale their global teams. We curate top LATAM talent and connect professionals with long-term, high-impact opportunities while providing full employer-of-record support.

In this role, you will join a US-based product company that builds digital interviewing and talent assessment solutions used globally.

Challenge

We’re looking for a Senior Full Stack Software Engineer with strong .NET (C#) and React expertise to join one of the Engineering (Integrations)teams.

As a Senior Software Engineer specializing in Integrations, you will be responsible for coding our cutting-edge human interaction software, specifically focusing on an Enterprise-level SaaS Video Interview and/or chatbot platform. You will work independently and collaborate directly with other Software Engineers, an Engineering Team Lead, QA Engineers, Product Managers, and Product Designers to bridge our platform with the broader HR tech ecosystem.

In this role, you will specifically innovate on Internal Tools to improve our users' day-to-day experiences and build and maintain robust connections with external Applicant Tracking Systems (ATS). A key part of your mission will be to drive solutions that automate repetitive manual tasks, shifting the focus toward high-impact innovation.

Responsibilities

Integrations & Ecosystem Connectivity:Design and implement seamless connections between our platform and external ATS systems to ensure a "plug-and-play" experience for clients.Master diverse third-party APIs while maintaining high standards for data integrity and system reliability.

Internal Tooling Innovation

Innovate on bespoke internal tools that empower our team members and drive a better day-to-day experience for our own users.

Prototype and build solutions that transform complex internal workflows into intuitive, high-performance interfaces.

Automation & Efficiency

Proactively identify and drive solutions to automate repetitive manual tasks across the organization.

Use performance and error monitoring tools to ensure these automated solutions improve the overall customer and internal user experience.

Engineering Excellence

Contribute to the design and implementation of scalable solutions, write comprehensive tests, and perform thorough code reviews for peers.

Effectively document work and architectural patterns for consumption by the broader engineering team.

Participate in daily and weekly engineering team meetings to align on work schedules and SDLC progress.

Coaching & Leadership

Provide guidance and constructive feedback to new or associate team members.

Demonstrate continual learning of new languages, libraries, and industry SDLC best practices.

Mandatory Skills

• Strong experience with .NET (C#) in production environments.
• Solid experience building modern front-end applications with React.
• Experience working with MS SQL or similar relational databases.
• Senior-level mindset with strong ownership and accountability.
• Experience working on existing production systems (not only greenfield).
• Ability to handle evolving requirements and technical ambiguity.
• Strong English communication skills (written and verbal).
• Experience collaborating in distributed teams.

Nice to Have

• Experience with microservices architectures.
• Familiarity with AWS cloud environments.
• Exposure to test automation practices.
• Experience with AWS AI-related services such as SageMaker, Lex, Comprehend, or Rekognition (bonus, not required).

Team & Environment

• Join one of the Assessment-focused engineering teams.
• Collaborative environment with senior engineers and technical leadership.
• Strong focus on product evolution and maintainability.