Arnau – Python, AWS, FastAPI

A lifestyle brand featuring an online tattoo academy, e-commerce platform, and in-person studio.

• Performed a complete digital transformation, building the company's entire technology infrastructure and engineering team from the ground up.
• Achieved a 900%+ increase in profitability without expanding headcount by developing a suite of proprietary tools (Python, Go, Vue.js) that automated core business operations and eliminated manual workflows.
• Architected and deployed a scalable, unified cloud infrastructure using Terraform, integrating disparate third-party systems and creating a single source of truth for business data.
• Hired, mentored, and led a high-performing engineering team, fostering a culture of ownership and innovation to solve complex business challenges.
• Implemented AI and BI solutions to automate costly procedures and enable data-driven strategic decision-making, significantly reducing operational costs.

Stock market and cryptocurrency tools for automated live trading, back-testing, and optimization. As part of the first batch of hires for the start-up, Arnau joined a team of eight as a Lead Software Engineer, helping the company to professionalize their tools from prototypes into production-ready products with languages like Python, Golang, and TypeScript, deploying on AWS with IAC through Terraform.

After six months, he was promoted to Chief Technology Officer.

• Developed sophisticated stock market and cryptocurrency tools for live trading, backtesting, and optimization.
• Transformed prototypes into production-ready products using Python, Golang, TypeScript, and AWS, enhancing the company's technological capabilities.
• Quickly advanced to a leadership role, translating business needs into technical requirements and laying the groundwork for the company's growth.

Together with two partners, launched a startup in healthcare. Arnau helped build a product to give users an instant overview of the health of their mouth by taking a few pictures and passing them through the AI image analysis engine.

• Co-founded a startup revolutionizing oral health diagnostics using AI image analysis.
• Utilized TensorFlow, Python, Golang, and MongoDB in developing a user-friendly product for instant oral health assessments.
• Built the foundation for efficient and effective engineering teams, contributing to the startup's rapid progress.
• Actively participated in fundraising activities, securing the financial resources needed for startup growth.

A product that allows people to reach out to their contacts at the right time, with the right context. Arnau joined an already mature project to help it scale and be ready for mass release.

• Assisted in scaling a mature product for mass release, focusing on backend engineering.
• Strengthened existing systems to support growing traffic and user demand.
• Utilized Python & FastAPI on AWS & Terraform, implementing CI pipelines for rapid and reliable service delivery.
• Focused on user experience and user value throughout the development process.

A webRTC solution for a social video startup. Services were built on AWS infrastructure, using CI pipelines for iterative development, and were designed to be fault-tolerant and self-healing.

• Designed and implemented microservices for a social video startup, facilitating user-coach interactions.
• Supported 2 million streamed minutes with a weekly 10% growth in traffic through services mainly coded in Python & Golang.
• Built the technical foundation for the startup, including mobile apps, ensuring fault tolerance and self-healing capabilities.

Foundational software for prototypes and launches of new businesses in the hotel and travel industries in a variety of tech stacks (Python, Golang, PHP & others). He worked as a technical account manager to develop a wide variety of technical solutions to different challenges.

• Created foundational software for startups in the hotel and travel industries using diverse tech stacks.
• Addressed various technical challenges, delivering tailored solutions across multiple projects.
• Led a 12-person team that became the most profitable team in the entire company.