Aleksander Izemski
Verified Expert in Engineering
Full-stack Developer
Poznań, Poland
Toptal member since May 17, 2022
Aleksander is a front-end engineer specializing in React and has experience writing RESTful APIs with Node.js, Express.js, and Mongoose. He's led the whole process, from first contact with the client through development to production deployment. He also conducted academic research in machine learning and published a paper about usage reinforcement learning in education. Aleksander enjoys facing challenges and new experiences while meeting clients' requirements.
Portfolio
Experience
Availability
Preferred Environment
React, Node.js, Express.js, Amazon Web Services (AWS), Artificial Intelligence (AI), OpenAI GPT-3 API, Python 3, Next.js, Machine Learning, Data Science
The most amazing...
...project I've worked on is a production management app where users can see the progress of the process with an estimated time of finishing.
Work Experience
Machine Learning Engineer
Self-employed
- Performed competitive analysis, designed a solution, and successfully launched an MVP with positive initial feedback from stakeholders.
- Co-developed a solution for content writing and made it friendly for non-technical users.
- Automated the process for data mismatch correction, which resulted in the reduction of data that needed to be checked by 74%.
Full-stack Developer
Self-employed
- Developed a web platform that helped a production company increase their performance and have a more predictable process.
- Designed the whole platform based on the client's needs.
- Set up and configured Ubuntu Server to serve both front and back of the platform.
- Described the requirements, created tasks, and then delegated them.
- Handled negotiations with clients regarding the rate, deadline, and what could be done.
Software Engineer
Nokia
- Developed a platform that clients around the world use.
- Tracked and fixed bugs using Jira as a reporting tool.
- Reviewed and assigned tasks for working students and interns.
- Rewrote the deprecated React components with a new UI library.
Junior Front-end Developer
UDI
- Created a custom landing page based on a given project.
- Managed multiple WordPress-based websites by adding custom PHP functions.
- Developed a WordPress-based shop with a WooCommerce widget.
Intern
Chaos Gears
- Used AWS Lambda that scraped data and saved them to S3.
- Created a scraper that got AWS pricing data for services.
- Integrated two AWS Lambda functions with each other.
Experience
Online Tutoring Platform
I developed the front end and integrated it with Stripe to manage the transactions.
Furniture Production Scheduler and Workforce Manager
I also integrated a feature that facilitated the assignment of workers to different workplaces. This ensured that the workforce was always used in the most optimal manner, avoiding any production bottlenecks. But I didn't stop there. Recognizing the importance of real-time oversight, I implemented a live tracking system, allowing managers to oversee the progress of processes in real time.
Throughout this project, I was involved in every phase. From the initial discussions to understanding the client's unique needs to closely collaborating with the development team, refining algorithms, and even the rigorous beta-testing phase, I was there, ensuring that the application met and exceeded expectations. The result? A game-changing platform that enhanced the company's production efficiency, predictability, and overall operational excellence.
Education
Master's Degree in Artificial Intelligence
Poznań University of Technology - Poznań, Poland
Bachelor's Degree in Computer Science
Nicolaus Copernicus University - Toruń, Poland
Skills
Libraries/APIs
React, Node.js, REST APIs, API Development, TensorFlow, PyTorch, jQuery, React Redux, Stripe API
Tools
Mongoose, Adobe Experience Design (XD), Photoshop CS6, JSX, Pytest, PM2, Amazon SageMaker
Languages
TypeScript, Python, JavaScript, HTML, Python 3, Java, C++, UML, SQL, CSS, PHP, GraphQL
Frameworks
Express.js, Spark, Bootstrap, Next.js, Jest
Paradigms
Responsive Web Design (RWD), REST
Platforms
Amazon Web Services (AWS), WordPress, Ubuntu 16.04, AWS IoT, Docker
Storage
Databases, MongoDB, Database Architecture
Other
Algorithms, Machine Learning, Front-end, Full-stack Development, Networks, System Administration, Discrete Mathematics, Calculus, Deep Learning, Computer Vision, Natural Language Processing (NLP), Artificial Intelligence (AI), Reinforcement Learning, Deep Reinforcement Learning, Data Visualization, Decision Support Systems, Statistical Learning, Serverless, Ubuntu Server, Styled-components, System Architecture Design, Negotiation, Axios, Generative Pre-trained Transformers (GPT), OpenAI GPT-3 API, Prototyping, MVP Design, System Design, No-code Development, Low Code, Web Scraping, Data Science, Back-end
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