Rafał Ileczko
Lead | Senior Software Engineer
E-mail address
Website
Languages
Polish
English - C1
Summary
Founder, Lead, Senior Fullstack Engineer with over 9 years of comprehensive experience in startup environments. Absolutely product-oriented with a keen focus on delivering business value, enhancing UX and DX, simplifying processes. Language-agnostic, but most efficient in the Clojure and Typescript environments. Managed teams of up to 5 developers.
Experience
Senior Fullstack Engineer
Kleene · August 2022 - Present
- Fullstack
- Clojure
- ClojureScript
- React
- PostgreSQL
- ELT
- AWS
- Kafka
- Proposed and developed the standardization of code and API schemas, reducing bug reports by approximately 15%.
- Led the development of a design system, cutting down the time required to launch new designs by 30%.
- Led feature implementation end-to-end: from gathering requirements, through design to implementation
Co-Founder / CTO
Maintei · July 2021 - July 2024
- Fullstack
- Typescript
- React
- PostgreSQL
- IIoT
- Supabase
- Cloud Infrastructure
- Led all stages of the product lifecycle, from initial concept, and features planning, through development and cloud infrastructure setup, to deployment of 2 full stack web, and single IoT application.
- Developed a CMMS application, designed to improve equipment uptime and reduce maintenance costs through predictive maintenance and real-time monitoring and alerting.
- Engineered an IoT platform for remote monitoring of industrial equipment, aiming to enhance operational efficiency and support data-driven decision-making.
Lead Frontend Engineer
Retailic · January 2020 - July 2022 (2y 6m)
- Tech Leadership
- Clojure
- ClojureScript
- TypeScript
- React
- ReactNative
- Managed a team of 5 developers, leading two major e-commerce projects.
- Prepared a strategic plan for a technology stack continuous transition of a large code base, allowing the use of 50% fewer developers and finishing 30% faster compared to the original separate rewrite plan.
- Led a design system implementation, reducing the development time for new views and components by about 40%.
Senior Frontend Engineer
Retailic · January 2018 - December 2019 (2y)
- Clojure
- ClojureScript
- Typescript
- React
- ReactNative
- Playwright
Web developer
Social Karma · X 2015 - VII 2016 (10m)
- Web design
- Wordpress
- Shopify
- Prestashop
Skills
Programming Languages
JavaScript/TypeScript, Clojure, ClojureScript, HTML, CSS, C#/F#, Python, SQL
Development of business applications
Cypress, Fastify, NextJS, Node.JS, Playwright, PostgreSQL, RadixUI, React, React Native, React Query, Rum/Reagent, Storybook, Styled Components, Supabase, TailwindCSS, tRPC, TanStack Router, Vite
Others
CI/CD, priority management, software architecture design, team leadership, responsive web design