Senior Full Stack Engineer .NET / React
Confirmed on the employer's own hiring board on Oct 1, 2026. First seen by Alion on Sep 14, 2026.
About the opportunity
Join one of our Engineering (Integrations) teams to build cutting-edge human interaction software, focusing on Enterprise-level SaaS Video Interview and chatbot platforms.
About our client Our client is an AI-powered hiring technology company, offering video interviewing and assessment solutions that transform how companies connect talent to opportunity.
What you'll do
Design and implement seamless connections between our platform and external Applicant Tracking Systems (ATS) to ensure a "plug-and-play" experience.
Master diverse third-party APIs while maintaining high standards for data integrity and system reliability.
Innovate on bespoke internal tools to empower team members and improve daily user experiences.
Prototype and build solutions that transform complex internal workflows into intuitive, high-performance interfaces.
Proactively identify and drive solutions to automate repetitive manual tasks across the organization.
Use performance and error monitoring tools to ensure automated solutions improve customer and internal user experience.
Contribute to scalable solution design, write comprehensive tests, perform code reviews, and document architectural patterns.
Collaborate in daily and weekly engineering meetings, and provide guidance/constructive feedback to associate team members.
What you bring (must-haves)
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, accountability, and ability to handle technical ambiguity.
Experience working on existing production systems (not only greenfield projects).
Strong English communication skills (written and verbal) for collaborating in distributed teams.
Bonus points for (nice-to-haves)
Experience with microservices architectures and AWS cloud environments (including AWS AI services like SageMaker, Lex, Comprehend, or Rekognition).
Experience integrating ATS platforms such as Workday, SmartRecruiters, iCIMS, or SuccessFactors.
Knowledge of PostgreSQL, Aurora, DynamoDB, Celery, Insomnia, WebRTC, Docker, and CI/CD pipelines.
Exposure to test automation practices, mentoring engineers, and influencing engineering practices.
Perks & benefits
Equipment provided - none of that "bring your own device" stuff here
Full back-office support - Legal, Accounting, HR Business Partner, and Delivery team
Career and cultural mentoring - how to show up, stand out, and navigate US work culture
Free English lessons with a native speaker
Referral bonus - recommend Ubi to your tech friends and get paid for it
Florianópolis HQ always open - 100% remote, but the office is there whenever you want it.
How the process works
Interview with our Tech Recruiter (+ quick AI assessment, if needed)
Client interview process (varies by company)
Offer
Onboarding with full Ubiminds support
Why Ubiminds? With 9 years in the market and GPTW-certified, Ubiminds connects Latin American tech professionals with software companies in the US and Canada. Hundreds of professionals in data, design, product, and engineering are already growing in North American teams with our support. We're with you throughout the entire journey - Recruitment, Legal, Accounting, PeopleOps, and career guidance - so you can thrive internationally with confidence.
Ready to go global? Apply now - it takes less than 5 minutes.