Senior Fullstack Engineer

Blend360

Senior Fullstack Engineer at Blend contributing to AI-powered web applications. Collaborating across teams with a focus on backend development using Python and AWS.

Posted 6/6/2026full-timeRemote • 🇦🇷 ArgentinaSeniorWebsite

Tech Stack

Tools & technologies

AWSCloudEC2PythonReact

About the role

Key responsibilities & impact

Collaborate with cross-functional teams to deliver high-quality, scalable products using cutting-edge technologies including React, Python, and AWS.
Design, develop, and maintain backend (Python/FastAPI) and frontend (React) components of web applications, with a primary focus on backend architecture and performance.
Build and integrate AI-powered features and systems into production applications, collaborating with data science and ML teams as needed.
Collaborate with cross-functional teams to gather requirements and deliver new features end-to-end.
Write clean, scalable, and well-documented code following software development best practices.
Architect and integrate cloud-based solutions using AWS services to ensure reliability and scalability.
Design and maintain RESTful APIs with a focus on performance, security, and maintainability.
Optimize application performance across the stack, ensuring a seamless and high-quality user experience.
Participate in code reviews, providing and receiving constructive feedback to maintain code quality standards.
Troubleshoot, debug, and resolve issues across the full stack in a timely and effective manner.
Stay current with emerging technologies, AI frameworks, and industry trends to continuously improve solutions.

Requirements

What you’ll need

Bachelor's or Master's degree in Computer Science, Software Engineering, or an equivalent field.
Strong proficiency in Python and FastAPI for backend development, including RESTful API design, implementation, and optimization.
Solid hands-on experience with React for frontend development, including component architecture and state management.
Demonstrated experience working with AI systems, LLM integrations, or AI-powered applications.
Practical experience with AWS cloud services (e.g., EC2, S3, Lambda, RDS, or equivalent).
Experience with relational and/or non-relational databases.
Familiarity with version control systems, particularly Git, and collaborative development workflows.
Strong problem-solving skills, attention to detail, and ability to take ownership of complex technical challenges.
Ability to work effectively in agile, cross-functional team environments.
English: Advanced (required for effective communication with global teams).

Benefits

Comp & perks

📚 Learning Opportunities: Certifications in AWS (we are AWS Partners), Databricks, and Snowflake.
Access to AI learning paths to stay up to date with the latest technologies.
Study plans, courses, and additional certifications tailored to your role.
Access to Udemy Business, offering thousands of courses to boost your technical and soft skills.
English lessons to support your professional communication.
👨🏽‍💻 Travel opportunities to attend industry conferences and meet clients.
👩‍🏫 Mentoring and Development: Career development plans and mentorship programs to help shape your path.
🎁 Celebrations & Support: Special day rewards to celebrate birthdays, work anniversaries, and other personal milestones.
Company-provided equipment.
⚖️ Flexible working options to help you strike the right balance.
Other benefits may vary according to your location in LATAM.

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

PythonFastAPIReactRESTful API designAI systemsLLM integrationsAWSEC2S3Lambda

Soft Skills

problem-solvingattention to detailownershipcollaborationagile methodologycross-functional teamworkcommunication

Certifications

Bachelor's degree in Computer ScienceMaster's degree in Software Engineering