Blend is a premier AI services provider, committed to co-creating meaningful impact for its clients through the power of data science, AI, technology, and people. With a mission to fuel bold visions, Blend tackles significant challenges by seamlessly aligning human expertise with artificial intelligence. The company is dedicated to unlocking value and fostering innovation for its clients by harnessing world‑class people and data‑driven strategy. We believe that the power of people and AI can have a meaningful impact on your world, creating more fulfilling work and projects for our people and clients. For more information, visit

We are seeking a Senior Fullstack Engineer to contribute to our next level of growth and expansion.

Job Description

We are looking for a Senior Fullstack Engineer to work alongside a general organization, contributing to the design, development, and maintenance of modern web applications — with a strong focus on backend systems and AI-powered solutions. You will 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.

Qualifications

- 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.

Languages

English: Advanced (required for effective communication with global teams).

Experience

3+ years of experience in Fullstack Engineering or related disciplines, with a strong backend focus and hands‑on involvement in AI‑powered application development.

Additional Information and Perks

Learning opportunities: Certifications in AWS (we are AWS Partners), Databricks, Snowflake, access to AI learning paths, study plans, courses, additional certifications, Udemy Business, English lessons.

Travel opportunities to attend industry conferences and meet clients.

Mentoring and Development: Career development plans and mentorship programs.

Celebrations & Support: Special day rewards, company‑provided equipment.

Flexible working options.

Other benefits may vary according to your location in LATAM. For detailed information regarding the benefits applicable to your specific location, please consult with one of our recruiters.

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📌 Senior Fullstack Engineer (Santiago)
🏢 Blend
📍 Santiago