Alberto Llanos

Professional journey

Experience

5+ years shipping fullstack, product-focused software: secure backends with Python/Django and NestJS, React frontends, AWS cloud and AI/agent-powered systems.

Professional Experience

  1. AuditBrain

    Backend Lead & Senior Fullstack Developer

    Full-time
    Colombia

    Backend lead and senior fullstack developer at a SaaS company moving toward an agentic model, building AI agents into the audit platform (ABE PRO and ABI) to make audit workflows easier, with ownership across Django, React and AWS.

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    Leading the backend as backend lead while contributing as a senior fullstack developer across the platform
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    Designing and embedding AI agents into ABE PRO and ABI to streamline audit workflows for auditors and clients
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    Building fullstack features across a product split into three branches: AbeOLD (legacy external audits), ABE PRO (next-gen audit product) and ABI (internal auditor tooling)
    •
    Owning delivery end-to-end with Django and React, deployed and operated on AWS
    Django React AWS AI Agents PostgreSQL DRF

  2. Welto

    FullStack AI Developer & DevOps

    Part-time
    Panama

    Part-time engagement (billed by hours and outcomes) leading an innovative, AI-driven project: built from zero a platform to manage food-benefit and meal-voucher cards, enabling purchases across digital platforms and POS, owning the NestJS backend, the React frontend and the AWS infrastructure.

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    Led the project and made the business and architecture decisions that shaped the platform
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    Ran the entire development and design process with AI assistance, delivering an innovative project with excellent results
    •
    Built the meal-voucher and food-benefit card platform from scratch, backend and frontend
    •
    Designed the NestJS backend and APIs to process card purchases across digital platforms and POS
    •
    Developed the React frontend for benefit management and card operations
    •
    Worked as DevOps on AWS, administering servers and virtual machines
    NestJS React TypeScript PostgreSQL AI AWS DevOps

  3. NexAgency

    AI Fullstack Developer

    Full-time
    United States

    Designed and developed an AI agent orchestration API, connecting product workflows with FastAPI, CrewAI and LLM integrations, and owning the surrounding DevOps and delivery pipelines.

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    Designed and developed an AI agent orchestration API from product requirements to delivery
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    Implemented FastAPI and CrewAI patterns for agent creation, maintenance and execution
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    Created pipelines, observability and DevOps workflows to support reliable releases
    •
    Integrations with Claude Code, OpenAI, Clerk and Railway
    FastAPI CrewAI Claude OpenAI Clerk Railway DevOps

  4. Nivelics

    Backend Developer

    Full-time
    Colombia Mexico

    Built and evolved a CRM system with Django, applying DDD boundaries, modular applications and integration workflows.

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    Built and maintained Django CRM capabilities with modular application boundaries
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    Applied DDD patterns to clarify domain behavior and reduce coupling
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    Maintained modular Django applications
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    Integrated with blob storage and Azure DevOps
    Django DDD Azure DevOps Blob Storage PostgreSQL

  5. Sofka Technologies

    Developer Consultant

    Consulting
    Colombia Panama

    Migrated legacy Java/OpenLegacy services to AWS serverless architecture and built supporting Django tooling for secure service testing.

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    Cost reduction −30% ↘ 30%
    •
    Migrated 40+ Java/OpenLegacy on-premise services to AWS Lambda and API Gateway
    •
    Implemented serverless architecture decisions that improved scalability and reduced operational cost
    •
    Developed Django applications for encrypted service testing
    •
    Collaborated with multidisciplinary teams under agile methodologies
    AWS Lambda API Gateway Django Java PostgreSQL

  6. Darient Technology

    Software Developer

    Full-time
    Panama

    Built, maintained and hardened Django microservices on Linux environments, with focus on performance and secure production practices.

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    Built and maintained production microservices with Django on Linux environments
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    Optimized services, improving performance significantly ↗ significant
    •
    Implemented secure development practices in production environments
    Django Linux Microservices PostgreSQL Docker

  7. BTI Rebus Technology

    Backend Developer

    Full-time
    Colombia United States

    Developed and maintained Python/Django microservices on AWS while supporting frontend integrations and scalable product delivery.

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    Developed and maintained Python/Django/DRF microservices deployed on AWS
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    Designed scalable and maintainable solutions in agile product environments
    •
    Integrated frontend applications using Next.js and React.js
    Django DRF AWS Next.js React

  8. Sol4IT

    Oracle Netsuite Consultant

    Consulting
    Colombia Mexico

    Developed backend services with JavaScript and SuiteScript in agile environments.

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    Developed backend services with JavaScript and SuiteScript
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    Participated in agile teams with Kanban methodology
    JavaScript SuiteScript Oracle NetSuite Kanban

  9. ActioByte

    SAP Consultant

    Consulting
    Colombia

    Consultancy and support for SAP solutions for Colombian clients.

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    Consultancy and support for SAP solutions for Colombian clients
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    Customization and integration of SAP modules
    SAP ABAP FI MM CO PM

Freelance Experience

  1. Darien Technology

    Fullstack Developer

    Freelance
    Panama

    Delivered full-stack product work with React, Shadcn and Django API integrations while supporting backend features and technical interviews.

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    Built React application using Shadcn components and modular UI patterns
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    Integrated frontend flows with backend APIs through reusable components
    •
    Provided backend support to Django web/mobile apps and built new features
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    Conducted technical interviews with senior and mid-level candidates in English and Spanish for months, developing strong assessment skills and deeper technical insight
    React Shadcn Django API Integration

  2. Shokworks

    Data Engineer

    Freelance
    United States

    Built data pipelines and backend services for insurance and vulnerability-scanning products using Snowflake, Flask and FastAPI.

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    Built ETL pipelines with Snowflake and Snowpipe
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    Developed backend services in Flask and FastAPI for vulnerability scanning systems
    Snowflake Snowpipe Flask FastAPI ETL

  3. Aldea Media

    Backend Developer

    Freelance
    Colombia

    Developed credit settlement and legal workflow applications with Python/Django while managing AWS infrastructure.

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    Developed credit settlement applications using Python and Django
    •
    Deployed and managed AWS infrastructure
    Python Django AWS Credit Systems

  4. Busy Little Pixels

    Full-Stack Developer

    Freelance
    Ireland

    Developed full-stack integrations between accounting systems and e-commerce platforms with Node.js and React.

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    Developed full-stack solutions with Node.js and React
    •
    Integrated accounting software with Shopify
    Node.js React Shopify Accounting Integration