Ivan Martinez
Full Stack Developer
4+ years building production-grade SaaS platforms. Specialized in scalable backend systems, complex third-party API integrations, and full infrastructure ownership — from database design to cloud deployment.
Who I Am
I'm a Full Stack Developer based in Cochabamba, Bolivia, with 4+ years of experience building production-grade SaaS platforms for companies in the US, Canada, and beyond — fully remote.
My core stack is React, Next.js, NestJS, and PostgreSQL, but I'm comfortable owning the full stack — from database schema design and backend architecture to frontend UX and cloud infrastructure.
I've worked on multi-tenant platforms, real-time systems, complex billing engines, and cross-border products serving US & Canadian markets. I take pride in writing clean, maintainable code and in delivering systems that scale.
Native Spanish speaker with professional English proficiency, used daily in remote teams.
Work History
Tech Lead & Full Stack Developer
CurrentRedlizard Studioz Inc.
- Promoted to Tech Lead after 3 months; led full architecture of a multi-tenant SaaS for document and compliance management in heavy transport, built from scratch with subdomain-based tenant isolation via Cloudflare.
- Engineered dynamic Stripe billing engine: tier-based pricing algorithm driven by active/new/archived driver counts, T+3 invoice scheduling, payment method management, and DB invoice snapshots.
- Implemented async notification pipeline (Twilio SMS + Postmark email) with Redis-backed queues and retry logic; led legacy data migration from monolithic to modular schema.
Full Stack Developer
Nacer Digital
- Built real-time persistent chat (Firestore) with full conversation continuity across workflow stages (bid → contract → active work) on a multi-role freelance marketplace; designed a multi-role rating system with star-distribution chart.
- Replicated full AWS production environment for staging from scratch: Amplify (frontend), Elastic Beanstalk (backend), RDS, SSL certificates, and DNS routing.
- Implemented event-sourcing table pattern as a domain-agnostic action queue; developed dispute resolution flows, milestones, time logs, and service provider profiles.
Software Engineer
Iventiva
- Designed automated email notification pipeline: 3 flows × 3 retries = up to 9 scheduled emails per user, covering identity verification, bank authentication, and mortgage assessment for a cross-border real estate SaaS.
- Reduced a critical DB query from 28s → 3.5s (~87% improvement) via schema redesign, N+1 ORM elimination, and materialized views on a Ruby on Rails application.
- Integrated third-party services for identity verification, bank data validation, and creditworthiness evaluation; managed Heroku deployments and production incident response.
Full Stack Developer, Intern
Fundación Jala
- Built full-stack features across internal projects applying SOLID principles, design patterns, and clean architecture in Agile/Scrum teams.
Tech Stack
Frontend
Backend
Databases
DevOps & Cloud
Integrations
Languages
Academic Background
Universidad Mayor de San Simón
Bachelor's Degree · Computer Science / Informatics Engineering
Get In Touch
I'm open to remote opportunities, freelance projects, and interesting collaborations. Feel free to reach out — I usually respond within 24 hours.