BackEnd Engineer

This position is open to candidates based in Mexico only. Applications from outside Mexico will not be considered. Company Overview At Avahi, we’re redefining what it means to be a premier cloud-first consulting company, recognized for our people, culture, and innovative solutions. With expertise in Managed Services, Reselling, Staffing, and Professional Services, we are dedicated to delivering exceptional value and putting customers first. As a remote-first, global team spanning North America, Europe, and Southeast Asia, we foster a collaborative and diverse environment where professional growth, creativity, and mutual respect thrive. Guided by our values—Customer-Centricity, Collaboration, Agility, Innovation, Integrity, and Diversity & Inclusion—we empower businesses to embrace the full potential of a cloud-first approach. Role Summary We are seeking a highly skilled Backend Engineer to join our dynamic team. In this role, you will design, build, and maintain scalable backend systems that power advanced AI solutions for large enterprises. This is an exciting opportunity to work at the intersection of backend development and cutting-edge AI technologies, contributing to high-performance systems that integrate machine learning models, databases, and cloud services. If you are passionate about backend engineering, enjoy solving complex problems, and thrive in a fast-paced environment, we want to hear from you.

Key Responsibilities

Design, build, and maintain scalable backend systems for document retrieval, processing pipelines, and AI-driven integrations, prioritizing correctness, composability, and long-term maintainability. Write backend code that minimizes side effects, structuring systems around pure transformations where possible and isolating I/O, orchestration, and infrastructure concerns at the edges. Design and implement well-defined APIs for serving machine learning models, vector databases, and embedding services, with explicit contracts, consistent error handling, and deterministic execution paths. Architect high-performance backend systems for AI training, simulation, and inference workloads, emphasizing clear data flow, reproducibility, and scalability. Create internal tools and dashboards that provide visibility into backend behavior, helping teams validate assumptions, enforce invariants, and continuously improve system efficiency. Develop automation, monitoring, and observability mechanisms that surface meaningful signals through logs, metrics, and traces, enabling rapid diagnosis of performance and reliability issues. Build systems that integrate fine-tuned AI models with databases and downstream services using compositional design patterns rather than tightly coupled, stateful flows. Contribute to internal tooling and open-source initiatives, ensuring codebases are easy to reason about, test, and evolve as teams and requirements grow. Develop reusable Python libraries that integrate with AWS services and GenAI workflows, favoring small, focused functions to enable safe reuse and predictable behavior. Required Skills and Qualifications Strong proficiency in Python, with experience designing codebases that emphasize clarity, composability, and testability over cleverness or excessive abstraction. Solid understanding of data structures, algorithms, and backend system design, with the ability to reason about correctness, performance, and trade-offs. Experience building systems that apply functional programming concepts in practice. Hands-on experience with cloud platforms (preferably AWS), including compute, storage, networking, and managed data services. Proven ability to design and build APIs and backend services, ideally within containerized environments using Docker and modern deployment pipelines. Familiarity with large-scale or distributed systems, including asynchronous processing and service-to-service communication patterns. A strong engineering mindset focused on writing maintainable, predictable backend code that scales across teams and over time. Self-directed, comfortable working in fast-paced environments, and able to take ownership of complex backend systems end-to-end. Professional-level English communication skills, with the ability to explain technical decisions clearly and concisely. Why Work Here Remote-First Flexibility: Enjoy work-life harmony in a remote-first environment that allows you to work from anywhere. Innovative Culture: We embrace a startup mindset, encouraging creativity, agility, and growth. Be part of a team that explores cutting-edge technology and drives impactful solutions. Career Development: Avahi is committed to your growth, offering mentorship and opportunities to advance your career, with potential for full-time roles after initial contracts. Purpose-Driven Mission: Join us in making a difference. Avahi is dedicated to championing diversity, supporting women in tech, and fostering sustainable practices. Global Collaboration: Work alongside a diverse, talented team, sharing insights and collaborating to create innovative solutions that make a real impact. Join Avahi and make an impact in a fast-paced, customer-focused environment with abundant opportunities for growth. Accessibility and Inclusivity Statement At Avahi, we are committed to fostering a workplace that celebrates diversity and inclusivity. We welcome applicants from all backgrounds, experiences, and perspectives, including those from underrepresented communities. We are proud to be an equal opportunity employer, providing a fair and accessible recruitment process for all candidates. If you require accommodations at any stage of the application or interview process, please let us know, and we will work to meet your needs. Apply To This Job