![DS](https://d2abrqas732254.cloudfront.net/images/specialists/cbba6d5c1e381a1c9c3c6fc58527a49a605744e8.jpg)
English:
Upper Intermediate
Poland
UTC +01:00
Europe/Warsaw
Senior Full-stack React.js + Node.js developer / Tech lead
- In total, I have 6+ years of web development experience. I can clearly discuss different features, take the initiative in conversation and suggest improvements concerning UI, UX, business logic, accessibility, etc. - Large tech leading experience. - Experienced JavaScript developer with advanced knowledge of React framework - I worked with Next.js, Node.js, Express.js frameworks - Good knowledge of SQL databases such as PostgreSQL and NoSQL such as DynamoDB and MongoDB - Good leadership qualities, initiative and detail-oriented - I work at a fast pace to meet tight deadlines. - Enthusiastic team player ready to contribute to company success. Cheerful and resourceful. I always strive for knowledge and clean code.
Want to hire this engineer?
Check if Daniil is availableExpertise
Years of commercial development experience
6 years of experience
Core technologies
Other technologies
Project Highlights
Todo List
May `23 - Aug `23
3 months
NDA
The main goal of the todolist was to develop a system that allows you to monitor all your tasks that are done or should be done in the future. User can track their statuses and provide different descriptions and notes. Also, the user is able to check a chart where he can track how many todos were done per particular data frame. Work organization/communication: Scrum, Google Meet, Slack, estimation meetings, planning, code review, brainstorms, business updates, knowledge sharing activities, Clickup, Github, Hubstuff
Responsibilities & achievements
Created API for CRUD Operations Created synchronization requests from other services Created API and sync mode Participated in all discussions with customers Offered my ideas for improving the project Proposed several features that were later approved by customers and implemented on my part, such as integration with other services. Built the architecture of the project Worked with graphics, data acquisition and processing. Communicated with customers directly, since this is a startup and everything changes dynamically.
Dashboard of public companies + Network of professional contacts
Sep `22 - May `23
8 months
NDA
The main goal of the dashboard was to develop a system that allows you to monitor financial flows and key financial events associated with companies that have publicly entered the market and are traded on stock exchanges, for example, Nasdaq. As for the second project, the idea of the Network of professional contacts was to create a system for obtaining professional contacts, which would emphasize and correct the shortcomings of such a well-known system as LinkedIn.
Responsibilities & achievements
1. Built charts, histograms using various libraries for working with graphics, receiving and processing data, SEO optimization using Next.js 2. Worked with graphs Participated in all discussions with customers Offered my ideas for improving the project Proposed several features that were later approved by customers and implemented on my part, such as a formula for calculating a user's score based on his achievements, a rating table based on location parameters, years of experience, and type of activity. Built the architecture of the project Worked with graphics, data acquisition and processing. Mentored 2 juniors, who later rose to the middle positions according to the internal system of evaluation of the company. Communicated with customers directly, since this is a startup and everything changes very dynamically. Tools and Technologies: Next.js, Typescript, Tailwind, TwinMacro, Styled Components, GraphQL, Docker, ChartJS, ApexCharts Work organization/communication: Scrum, Google Meet, Slack, estimation meetings, planning, code review, brainstorms, business updates, knowledge sharing activities, Clickup, Github, Hubstuff
Trading Terminal
Mar `22 - Sep `22
6 months
NDA
Internal terminal for trading on assets located on its own exchange. It was an internal terminal of a company that provided this software to their customers. Out of the functions that differ from most of the terminals: there was an ability to work with tick volumes and open orders on vertical histograms.
Responsibilities & achievements
My responsibilities included: defining the technology stack for building the application, taking responsibility for building new features and business logic according to the basic requirements, also, with the changes I proposed building processes among other developers, distributed tasks, participated in discussions and resolution of controversial issues with other team members to prevent conflict situations, built common communication processes, took the initiative to introduce additional calls among developers to analyze tasks and improve the quality, readability and efficiency of the code This gave me a huge boost in communication skills, personnel management, management of business processes related to the development of the application and also I gained new knowledge, because we get it not only when we learn ourselves, but also when we teach others Tasks examples: Implemented the logic for creating orders on the trading terminal order book using Chart.js Implemented a pseudo-automatic trading algorithm for the selected strategy with dynamic parameters Implemented fuzzy search (lookforward, select range) for options names Created custom drag-n-drop library with own layer to make orders trade option on the real-time updating chart Stored information about the user’s wallet in Redis cache layer. Took the initiative to upgrade react to version 18 with all subsequent dependency updates Created custom modal form controller From my side, the following ideas were proposedб approved by customers and successfully implemented to improve the application: Liquidation price calculator, order liquidation algorithm, custom tools for working with charts, the ability to create API keys for remote work with an account Tools and Technologies: React.js, Redux, Next.js, Node.js, Express, MongoDB, Redis, Docker, AWS S3, Jest, RTL, GraphQL Work organization/communication: Scrum, Google Meet, Slack, estimation meetings, planning, code review, brainstorms, business updates, knowledge sharing activities, Jira, Gitlab.
Private clinic implants tracking system
Jan `21 - Mar `22
1 year
NDA
Development of an implant tracking system that allowed us to track the level of pain of patients and, based on the analysis, decide on further actions. Also, we developed a CRM Platform for doctors. I was the only front-end developer, which gave me a lot of experience in building such large enterprise projects from scratch. Also, I improved my skills in working with AWS services
Responsibilities & achievements
Worked with software development and testing team members to design and develop robust solutions to meet client requirements for functionality, scalability, and performance. Set up the frontend side environment from scratch Created an API based on Node.js (Express) and GraphQL. Client implemented with React.js, Next.js, Websockets, Webpack. Typescript was used instead of regular Javascript Implemented routing throughout the pages. Moved API from REST to GraphQL to speed up the development process and reduce unnecessary response Implemented AWS (S3, EC2, Cloudfront, Lambda) to use cloud service infrastructure Wrote application tests with a total coverage percentage of 80% using JEST, React Testing Library Implemented customizable dashboard table where the user has options to move, include/exclude, and apply filters for columns. Edited CI/CD ( lint, test, deploy stages ). Integrated third-party tools and components into applications Mentored 3 new junior Full-stack developers on the team Tools and Technologies: React.js, Redux, Node.js, Express, MongoDB, Redis, Docker, AWS (S3, EC2, Cloudfront, Lambda), Jest, RTL, GraphQL, PrismaORM, Formik, moment.js, date-fns. Work organization/communication: Scrum, Google Meet, Slack, estimation meetings, planning, code review, brainstorms, business updates, knowledge sharing activities, Jira, Gitlab.
Gaming industry forum
Oct `19 - Jan `21
1 year
NDA
Creation of a private forum/marketplace for the gaming community with a clear system for the distribution of roles and internal transactions. I can highlight the experience of compiling a custom mechanism for making transactions implemented using a message delivery guarantee
Responsibilities & achievements
Created a Custom CSS Component Library with SCSS, Rollup, and Storybook. Translated text content with i18n Created chart of activity, which shows visitor’s countries Implemented a user authorization mechanism using AWS Cognito Established option for real-time chat (BE + FE sides) Moved auth from jwt to session based Created an interface for admins about CRUD logic for posts and guides. Created a mechanism for custom internal transactions for the exchange of in-game currency for items Created dynamic forms Tools and Technologies: React.js, Redux, SCSS, Rollup, Storybook Node.js, Express, Postgresql, DynamoDB, Docker, Jest, RTL, REST API, Tailwind. Work organization/communication: Scrum, Google Meet, Slack, estimation meetings, planning, code review, brainstorms, business updates, knowledge sharing activities, Jira, Github.
Military marketplace + dashboard of last sales
Apr `18 - Sep `19
1 year
NDA
Creation of a private marketplace for the military worldwide community.
Responsibilities & achievements
Created routes + handlers for the main CRUD functionality Translated text content with i18n Created a chart of activity, which shows what was bought, by whom and the amount of that buy. Integrated tool for live chat with manager. Created session based authentication. Created an interface for admins about CRUD logic for goods and services. Tools and Technologies: React.js, Redux, Node.js, PostgreSQL, Docker, Jest, RTL, REST API, Tailwind, Ant Design
Education
Higher education in Computer Science
Agency
10-50
GMT+1
Kyiv /Ukraine,Alicante/Spain,Seattle/United States,Munich/Germany,Krakow/Poland
Core Expertise
Industries
Education & Science, Banking & Finance, Construction & Real estate, Internet & Telecom, Healthcare & Medicine, Branding, design, web development, Telecommunications and Social Network
Want to hire this engineer?
Check if Daniil is available