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Full Stack Developer & Backend Technical Lead | 3+ Years in AWS, SaaS, AI Integrations & Cloud Architecture

Javier

Full Stack Developer

Medellín, Colombia🇨🇴

$3,000 – $4,310/mo

About

Fullstack Backend-focused software developer with experience building and architecting multi-tenant SaaS platforms on AWS. Specialized in designing event-driven, cloud-native systems with hands-on expertise in AWS infrastructure and AI agent platforms. Strong background in translating complex business requirements into scalable backend architectures for enterprise clients. Proficient in Python, JavaScript, TypeScript, Java and SQL; with skills in technical leadership and adaptability.

Industry Experience

AI and Machine Learning Software

Chatbot and Conversational AI Software

Healthcare Practice Management Software

Workflow and Task Management Software

Business Management Software

Software Experience

Candidate Information

Availability

Full-Time

Work Arrangement

Remote

English Level

Professional Fluency (B2/C1)

Additional Languages Supported

Spanish

Roles Qualified For

Full Stack Developer

Web Developer

Work Experience

Full Stack Developer

12/2025 - Present

https://www.jumpcube.io/

Colombia

Backend Technical Leader

Design end-to-end backend architectures on AWS for multi-tenant SaaS platforms, doubling the number of active customers by reducing onboarding time by 55%.

Lead backend engineering teams, defining technical standards and reviewing architecture decisions, achieving a 75% reduction in production bugs.

Serve as the technical point of contact for enterprise clients, translating business requirements into backend architecture, leading onboarding integrations (including third-party APIs and messaging platforms), and owning incident resolution and technical escalations.

Integration Developer

02/2025 - 12/2025

https://www.jumpcube.io/

Colombia

Backend developer

Design and build backend services for AI-powered SaaS applications, including an automated pipeline that processes 2,000 documents/hour and reduces operating costs by 40% for a client.

Architect and deploy multi-tenant cloud infrastructure on AWS following serverless and event-driven patterns.

Design and implement AI agent platforms using cloud-based solutions and multi-tenant architecture, resolving almost 65% of customer support tickets for a company while using only a third of the workforce previously required.

Full Stack Developer

12/2023 - 02/2025

https://www.fiverr.com/

Colombia

Develop web applications for management and control of business processes for multiple clients.

Design and create web pages as marketing strategy for multiple business customers.

Trackolus, a warehouse manager project, shortened and simplified sales response times and reduced product shortages by 15% for one of my clients.

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