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Rafael – React, Python, AWS, experts in Lemon.io

Rafael

From Poland (GMT+2)

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Full-stack Web DeveloperSenior
Hire developer
18 years of commercial experience
AI
Communications
E-learning
Entertainment
Gamedev
Healthcare
Management
Project management
Scientific research
Open source
CRM
Mobile apps
Lemon.io stats
3
projects done
1145
hours worked
Open
to new offers

Rafael – React, Python, AWS

Meet Rafael - a Senior/Lead FS Developer. Rafael has very wide experience and decent web software architecture knowledge. Another Rafael's strength is being hard-working: there’s always something new to learn, and this guy just does that. A sense of humor and openness is what makes Rafael really easy to go with. If you are looking for someone who can solve all tasks with high pace and quality - Rafael is just perfect for your team!

Main technologies
React
4 years
Python
8 years
AWS
3 years
Typescript
12 years
Node.js
8 years
JavaScript
12 years
Terraform
3 years
OpenAI
1 year
Additional skills
FastAPI
Vue.js
SQL
PostgreSQL
Ruby on Rails
HTML
Ruby
Linux
React Native
SciPy
Figma
Lambda
Tensorflow
OpenCV
iOS
Swift
Docker
Express.js
ElasticSearch
Electron.js
Firebase
Expo
Linux
SQL
Heroku
Nginx
MongoDB
Git
Flask
Sinatra
DigitalOcean
Serverless Computing
Next.js
Svelte.js
Vercel
Cloudflare
Redux
Apollo Client
WebRTC
WebSocket
SciPy
asyncio
GraphQL
Tailwind CSS
CSS
Snowflake
Supabase
OpenAI API
LLM
Rewards and achievements
Tech interviewer
Client's favourite
Ready to start
ASAP
Direct hire
Potentially possible

Experience Highlights

Tech Lead
Dec 2020 - Jun 20221 year 5 months
Project Overview

Solvemed builds medical devices, and it is an integrated platform for scientists and researchers to enable early diagnosis of neurological diseases (Alzheimer's, Parkinson's, et al.) They have been working directly with Oxford and Stanford Universities, as well as other major universities in Europe, to help researchers better understand the progression of diseases through modern biological measurement methods.

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Responsibilities:
  • led remote team of 14+ engineers and data scientists;
  • architected infrastructure on a private cloud (for HIPAA compliance);
  • built ML data processing and model training pipelines;
  • implemented quality management system (QMS) for medical devices ISO 13485 for the technology;
  • cracked iPhone camera to get raw data directly from the camera sensor;
  • produced proof of concepts, marketing materials for CV fundraising;
  • managed day-to-day engineering efforts (stand-ups, async updates); weekly company meetings (sprints, director reports), as well as quarterly gatherings (OKR planning and evaluation, etc.);
  • participated in the clinical trials and in writing scientific documents and reports.
Project Tech stack:
AWS
Python
SciPy
Figma
Lambda
PostgreSQL
React Native
Tensorflow
OpenCV
Terraform
iOS
Swift
FastAPI
React
Tailwind CSS
GraphQL
Staff Engineer
Dec 2017 - Dec 20192 years
Project Overview

Ovos Play is a versatile e-learning multi-platform for schools, businesses, and friends.

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Responsibilities:
  • implemented complex e2e test suite platform to increase dev velocity of +15 people;
  • created automation pipeline for deploying iOS and Android apps for 40+ clients;
  • mentored front-end and back-end engineers;
  • implemented cross-platform UI JS/TS frameworks for iOS/Android/Electron/Web.
Project Tech stack:
Node.js
Docker
JavaScript
Typescript
ElasticSearch
Electron.js
Express.js
React
GraphQL
Engineering Manager
Dec 2016 - Dec 20171 year
Project Overview

A global communication platform for top executives across +100 affiliate branches.

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Responsibilities:
  • managed a team of 8 developers to build from scratch a corporate communication system;
  • mentored in-house team in areas of new technology;
  • introduced new standards to corporate development culture (working documents, standups, async communication);
  • designed mobile apps for iOS and Android.
Project Tech stack:
React Native
Firebase
Expo
React
Integration Specialist
Dec 2016 - Dec 20171 year
Project Overview

DOOM, Quake, Fallout, The Elder Scrolls: All these games wouldn't be there if it wasn't for cooperation of hundreds of people. I was working on implementing open source data sharing protocols for game assets exchange across the teams.

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Responsibilities:
  • incorporated open source software into internal legacy systems;
  • extended project management stack (based on Redmine) with custom business logic.
Project Tech stack:
Ruby on Rails
Linux
SQL
PostgreSQL
Docker
Python
Software Engineer
Jan 2014 - Jan 20173 years
Project Overview

Redmine is a flexible project management web application with a robust ecosystem of extensions ranging from CRM to workforce planning.

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Responsibilities:
  • produced and implemented data mining solutions for businesses across various domains, including marketing, real estate, and e-commerce;
  • worked directly with leaders from different domains (management, analysis, development, administration) to ensure team integrity and successful deliverables;
  • led development of BPM software used to streamline and optimize work within the company.
Project Tech stack:
Linux
Python
Docker
PostgreSQL
Heroku
Nginx
Node.js
MongoDB
JavaScript
Git
Flask
Sinatra
Typescript
DigitalOcean
React
Senior Software Engineer
Dec 2015 - Dec 20161 year
Project Overview

All these LEGO bricks require quite a sophisticated mix of business, logistics, manufacturing, and software.

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Responsibilities:
  • implemented BPM and CRM platforms for sales and partnerships;
  • integrated two business-critical platforms into one;
  • implemented E2E test suite for implemented business processes and integration of external services.
Project Tech stack:
Python

Languages

English
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