At Zync, I lead the development of cutting-edge virtual meeting solutions that transform how people create video content. Our platform adds interactive presentations to video conferences, making virtual meetings as engaging and participatory as real-life events.Key Achievements:1. Architected and developed a scalable web application using React.js and Node.js, enhancing the user experience for over 1000 active users.2. Architected and developed a video production service for server-side video rendering, including captions, layout effects, b-roll, and audio. This saves our customers hours of video editing and is fully automated. 3. Implemented DevOps practices on Google Cloud Platform (GCP), automating deployment pipelines with Docker and Kubernetes, which reduced deployment time to 6 minutes.4. Integrated WebRTC solution and WebSockets for real-time communication, increasing user engagement during virtual meetings.5. Leading a team of engineers, conducting code reviews, and mentoring junior developers to uphold high coding standards and best practices.Responsibilities:1. Collaborated closely with design and executive teams in a dynamic startup environment to ensure alignment of technical solutions with business objectives and user needs.2. Designed and implemented comprehensive user interfaces (UI), robust APIs, and efficient business logic to fulfill all functional and non-functional requirements.3. Monitored application performance, implemented advanced logging mechanisms, and analyzed user analytics to improve user experience and system reliability continuously.Technologies and Tools:- Front-end: React.js, Next.js, Tailwind CSS, styled-components- Back-end: Node.js, Express.js, GraphQL- Integrations: Stripe, Daily.js, AppSumo, YouTube, LinkedIn, Calendly, X- DevOps: Google Cloud Platform (GCP), customers HTTPs & load balancing, Docker, Kubernetes, CI/CD Pipelines- Others: TypeScript, WebRTC, WebSockets, Event-Driven Programming, Agile/Scrum

Core skills: React (hooks), Node.js, TypeScript, CSS, GraphQL (Apollo), PWA Studio, Magento 2, JavaScript (ES6++), Cypress (end-to-end testing), Jest, Cypress- I develop store fronts in React for e-commerce based on Magento 2 and PWA Studio, with strong focus on: Checkouts (including implementing shipping methods, guest forms and payment methods) Cart / Minicarts Homepages (lighthouse scores >90 ) Product listings Category pages User account pages- I develop scalable and reusable components and contribute to private libraries, that are used globally within company- I validate and ensure correctness of Magento 2 Administration Panel for all front-end requirements- I participate in application / functionality design process based on new business or functional requirements- I am documenting my work, track my tasks in Atlassian Jira and collaborate using Bitbucket and Google Suite.

Core skills: React (hooks, redux), React Native, Node.js, TypeScript, GraphQL (Apollo / Prisma), JavaScript (ES6++), Cypress (end-to-end testing), Jest with react-testing-library (unit / integration tests), Google Cloud Platform, Docker, Kubernetes

Core skills: React (hooks, redux), Node.js, TypeScript, GraphQL (Apollo / Prisma), JavaScript (ES6++), Tableau (with JS & REST API), CSS-in-JS, Git, Azure DevOps, Octopus Deploy- I develop reusable user interfaces and scalable business intelligence web applications in React (hooks) and TypeScript,- I create and maintain whole deployment & continuous integration process (PR, code review, build & deploy)- I design and develop RESTful / GraphQL based web services for our applications based on Node.js / Express framework. - I participate in application / functionality design process based on new business or functional requirements- I work collaboratively in multinational team on several projects in agile development environment. I take part in code reviews and daily scrum meetings, providing instant feedback.- I work on areas outside of my core skills to address additional client requirements. I written several back-end applications and APIs (Node.js) in order to further enhance the team's products.- I help the team adopt new technologies and processes that improve team productivity and skill set.- I am documenting my work, track my tasks in Atlassian Jira Scrum Board and collaborate using GitHub and Slack.

Core skills: JavaScript (ES6 ++), Node.js, React, Tableau (with JS & REST API), CSS frameworks- User Interface and web application development with top web tech (including Node.js, React, ES6++, SASS) - Design, develop and deploy BI solutions in Tableau with various data source connections (including MS SQL Server)- Understanding and managing clients requirements and expectations, ensuring solutions target and solve business needs- Advise on optimal data visualization / analytics strategy and execution- Developing own expertise and training staff at various levels

Core skills: Tableau, SQL, data visualization, JavaScript (ES6++),- Design, develop and deploy BI solutions in Tableau with various live data source connections (including MS SQL Server)- Focus on Front-End Development including data visualization aesthetics and user experience- Understanding and managing clients requirements and expectations, ensuring solutions target and solve business needs- Advise on optimal data visualization / analytics strategy and execution- Developing own expertise and training staff at various levels

Core skills: PowerBI, VBA, Excel, Accounting, Financial Analysis & Reporting- Implementation of Microsoft Business Intelligence stack - PowerBI- Process optimalization (VBA programming, spreadsheet modelling, database design)- Building financial and operational models of new investment projects in Excel (including scenario, options and sensitivity analysis)- Detailed financial statement analysis of the company and its subsidiaries (ratios, vertical & horizontal analysis, trends)- Taking part in preparation of company periodic reports (including: plan versus actual, monitoring investment project costs and revenues etc.)- Continuous collaboration with other internal and external departments

- Financial and operational modelling- Monitoring and analyzing current financial or operational situation of subsidiaries and providing results to the management- Taking part in restructuring projects of subsidiaries- Preparing analysis of investment projects cost-effectiveness- Preparing opinions, analysis and recommendations of subsidiaries investment projects- Performing Polish and European transport market research

- Accurate and timely delivery and review of investment funds Net Asset Value- Net Asset Value factors and movement analysis- Reconciliation of various exceptions during valuation of a fund and assistance in issue resolutions- Financial Statements review and analysis- Process optimalization via VBA programming and spreadsheet modelling- Staff training and managing other Fund Accountants daily work- Periodic reporting to the management including Key Performance Indicators and funds activities- Cooperation with other (mostly international) departments

- Providing Net Assets Value of investment funds calculation, yields and other data for subsequent review- Recording relevant backup of daily investment funds valuations and explaining any differences between books and reports- Assisting in various projects organized within team or company- Researching, as assigned, certain securities in investment funds portfolio for the purpose of ensuring proper accounting treatment- Participate in regular accounting processes to prepare the fund accounting system for the next day

- Project management and design- Investment projects cost-effectiveness analysis- Creating and maintaining relationships with clients- Performing local market research- Accounting