Jónatan Rojas
Engineering Manager | Technical Delivery & Team Productivity
Engineering manager with over 9 years of experience helping teams deliver software predictably and efficiently. I bridge the gap between technical execution and business goals, turning around stalled roadmaps, driving automation, and scaling healthy, high-velocity engineering teams. Hands-on background across B2B marketplaces, distributed systems, and mobile platforms.
Core Competencies
Proven methodologies honed across enterprise scale and high-growth startups
Team Productivity
Adapting agile routines (Scrumban, Dual-Track), tracking velocity, unblocking engineers, and managing multiple concurrent projects with high delivery predictability.
B2B & Enterprise Systems
Deep background in high-throughput transactional platforms, facility management systems, and mission-critical conversational AI infrastructure.
Infrastructure & Automation
Leveraging modern automation (n8n, CI/CD, internal tooling) and resilient backend architecture to cut operational drag and production incidents.
Delivery Management
Cross-departmental alignment, dual-track discovery, requirement grooming, and executive transparency connecting SRE, Product, and Core Engineering.
Work Experience
Proven track record of engineering leadership, team scaling, and platform turnaround
Hubtype
// Engineering ManagerConversational AI platform helping B2C enterprise brands manage customer interactions at scale.
- ▸Delivery Turnaround: Stepped into a challenging execution environment and turned it around. Introduced agile routines and capacity planning, enabling the team to juggle 14+ concurrent projects with a 100% on-time delivery rate.
- ▸Platform Reliability: Managed backend infrastructure handling 10M+ monthly WhatsApp messages. Cut production incidents from 5 to 0.5/month through rigorous monitoring and quality checks.
- ▸Stakeholder Alignment: Collaborated with Customer Success and engineering leads to align technical roadmap directly with enterprise client SLAs.
- ▸Team Growth: Managed 7 engineers, established career progression frameworks and 1:1 routines, resulting in 3 internal promotions and improved retention.
Returnly (Affirm)
// Technical Project ManagerFintech leader in post-purchase payments and automated returns (acquired by Affirm).
- ▸Project Delivery: Prepared complex technical projects for development, clarifying cross-team requirements to consistently hit strict launch milestones with high predictability.
- ▸Cross-functional Bridge: Acted as the technical bridge connecting SRE, Data Science, Product, and Core Engineering teams to streamline high-dependency integration workflows and permanently eliminate delivery blockers.
- ▸Executive Visibility & Agile Operations: Rolled out Dual-Track Agile routines to provide senior leadership with transparent, real-time visibility into squad velocity, roadmap trade-offs, and critical path milestones.
- ▸Governance & Financial Compliance: Established software capitalization governance and project tracking frameworks, aligning engineering work output directly with corporate financial audit and compliance standards.
Groopify
// CTO & Co-FounderHigh-growth social discovery startup backed by top European venture funds.
- ▸Full Technological Ownership: Served as CTO throughout the startup lifecycle, designing the core platform architecture and scaling it from initial prototype to hundreds of thousands of users.
- ▸Cross-Functional Team Building: Recruited, mentored, and led cross-functional teams spanning iOS, Android, Backend, and Product Design.
- ▸High-Velocity Delivery: Established agile Scrumban workflows, real-time analytics, and automated deployment pipelines, maintaining rapid iteration cycles in a hyper-competitive market.
Famaex
Dec 2017 – Jun 2020Promoted to CTO within 6 months after rescuing the R&D roadmap and migrating a legacy platform to a modern, scalable environment.
Paktor – M17
Mar 2017 – Nov 2017Managed 4 distributed teams (9 engineers across India, Russia, Taiwan, Singapore, and Spain) delivering high-scale consumer mobile applications and conversational dating chatbots.
Innovega
Mar 2009 – Nov 2016Co-founded the software studio, successfully engineering and delivering 20+ custom software applications and client platforms across diverse industries.
Flagship Engineering Systems
Production-grade platforms built and maintained with full-stack discipline
Problem Manager Ecosystem
Comprehensive multi-tenant management ecosystem for climbing gyms. Integrates high-load REST APIs, a high-density administrative web panel, and native Android applications for climbers and route-setters.
Sanabria Helper Platform
Ecosystem powering civic information, local routes, points of interest, and community coordination. Features Mapbox interactive GIS, server-side caching, and distributed multi-service hosting.
TCG Ecosystem: RFBScanner & Card Manager
Dual-tier collector ecosystem combining a computer-vision camera scanner for collectible cards with a portfolio manager integrated into European trading markets.
Antigravity Models Widget
Ultra-compact native cross-platform desktop utility written in Rust. Monitors AI developer quotas, active context windows, and model latency with near-zero resource consumption.
Other Selected Projects
A scannable catalog of specialized tools, fintech calculations, and edge services
| Project | Link |
|---|---|
Boulder Tracker Live league scoring and competition tracker deployed for the Sputnik Boulder League. Cloudflare Workers (Hono)React 19Tailwind CSS v4Android App | Live↗ |
Cardmarket Tax Companion FIFO capital gains tax calculator and CSV audit scraper built specifically for Spanish AEAT tax filings. Python (uv)FIFO Tax EngineAEAT FormatsPlaywright Scrapers | — |
Avisa Asociación Public portal and member documentation engine for the Sanabria civic association. Next.jsCloudflare PagesCloudflare R2Tailwind CSS | Live↗ |
Cromos Manager Collector platform assisting communities in inventory tracking, trade matching, and sticker swap management. Cloudflare WorkerNode.jsTelegram API | — |