Andrzej is a Senior Full-stack Developer with 10+ years of software development experience curating innovative software solutions for clients. He is proficient in React, Node.js, TypeScript, and JavaScript and writes clean and efficient code on projects. Andrzej provides top-notch customer service on client projects and solutions.
Developed an innovative social platform for sharing and discovering news and media using React, Redux, Redux Saga, Reselect, AWS (S3, CloudFront), Immutable.js, and Styled Components.
Achieved the reduction of technical debt, performance optimizations (reduction of unnecessary React rerenderings), refactorings improving code quality, and UX improvements.
Ensuring that features are being delivered efficiently and on time.
Spearheaded the development and architecture of a content creators management platform.
Designed and deployed background scraping jobs to AWS K8s cluster, conducted external API reverse engineering, and implemented performance optimizations.
TypeScript, Next.js, React, tRPC, Prisma, PlanetScale, Playwright, Vercel, AWS (Kubernetes, S3), browser extensions, reverse engineering.
Worked on the redesign of registration and artwork sale forms for the LiveArt Market platform.
Oversaw the redesign of NFT minting process for LiveArt NFT, maintaining high standards of code quality and application design.
Built scalable solutions to ensure positive user experiences and measurable business growth.
Developed from scratch the Brew Finder application, a search tool for mortgage optimization leads.
Managed the development of a fully functional MVP for this project.
Ensured cross-platform compatibility and optimization and designed user interactions.
Worked on the development of TruckQ, an innovative construction plant management software, handling coding works and complex parts of the project.
Maintained and audited code/design quality as per project guidelines and standards.
Liaised with key internal stakeholders and maintained clear communication channels throughout the software development lifecycle.
Designed, developed, and delivered high-quality solutions on projects for One Design.
Drove best practices on solutions using TDD and BDD.
Created and maintained application documentation on the project.
Designing and building creative, usable, and compelling user interfaces on web solutions using industry best practices and integrating data from third-party APIs and back-end services on client projects.
Developing new customer-facing experiences and features on web solutions and defining the architecture for delivering improvements to different solutions with high availability, performance, and scalability.
Providing technical guidance for code reviews, troubleshooting production support issues post release, and resolving complex production issues on projects.
Offered functional smoke testing of the Order Management System for Trans Link Systems based on the Ericsson Order Care and BSCS systems.
Handled the integration of Ericsson's Order Care with legacy systems and internal components of the solution, databases, LDAP, etc.
Provided root-cause analysis on reported defects and troubleshot the Order Management System for T-Mobile.
Worked on the design and development of an eCommerce (social lending) platform using Django web framework.
Monitored key metrics and system health and solved complex problems on the solution.
Standardized the quality assurance procedure for the eCommerce platform and oversaw testing and developed fixes.
Delivered architecture artifacts that promoted re-usability, modularity, and scalability on the BSCS project.
Developed robust recommendations, proposals, and scope-of-work documents for the project and identified critical dependencies and gaps within the solution.
Planned and documented the strategy, design, and implementation of different engineering solutions on the project.
Produced and delivered customer-specific demonstrations, technical presentations, pilots, and POCs on client projects.
Developed software updates with other engineers in the company.
Engineered product features that delivered high value to customers, maintained project status reports, and participated in project status meetings with business stakeholders.
Provided frontend expertise for Guide Human website overseeing new features implementation and bug fixes with React and other libraries and tools following industry best practices.
Managed backend integration and handled data flow optimization tasks, performance profiling, improvement and established internal standards and workflows.
Implemented Git branching model and workflow, deployment pipeline configurations, file structures, and coding style.
ObitWriter, an obituary-writing tool by Legacy, helps users generate a full basic obituary by asking a series of questions about the deceased.
The developer performed frontend form performance optimizations, reducing unnecessary React re-renderings in the web app.
Enhancements in code quality were made through various refactorings, and the GraphQL queries were restructured for the solution.
Developed a zero-downtime student evaluation platform capable of handling over 500 hits/s on minimal hardware
Platform was based on QTI standards, catering to an educational measurement and evaluation system
Engineered the solution to be linearly scalable
Developed a search and registration app for Media Markt, Europe's largest retailer of consumer electronics.
App designed for the company's educational workshop events site held by the Polish branch.
The platform provides a virtual educational space for teachers, featuring professional teaching materials and ready-made lesson plans.
Active participation in the integration and launch of BSCS (telco billing system) and EOC (Ericsson's order management system)
Deployment of the integrated solution for Trans Link Systems, a public transport integrator
Worked as a developer in the Ericsson Order Care & BSCS billing system project
