I developed a range of IoT products for both startups and established companies. I worked with international teams and clients from the USA, Canada, and the UK. My role spanned both frontend and backend development, where I worked closely with designers, mobile developers, and firmware engineers using Agile methodologies, particularly SCRUM sprints. I also interviewed developer candidates to aline their skills with project objectives.Key projects:Software for prototyping BLE connectivity - I led a team of four (three developers and one QA) that developed an advanced prototyping tool. I worked on a frontend, backend and firmware. This role involved coordinating team efforts to research, validate and implement innovative solutions. I also served as a Project Owner and communicated with stakeholders. Neurotechnology-enriched headphones - I developed a mobile backend hosted on AWS, which included services for generating user content. I utilized an Infrastructure as Code (IaC) approach and built a CI/CD in GitHub Actions that deployed the app across multiple environments.AI-based applications - I developed a specialized chatbot that utilized a Retrieval Augmented Generation (RAG) and a vector database as well as a service analyzing trends within the technology industry.Technologies used: Typescript, JavaScript, Node.js, NestJS, Electron, React, Jest + RTL, Amazon Web Services (AWS CDK, DynamoDB, Lambda, Cognito, S3, EC2, Bedrock, Aurora), Infrastructure as Code, SQL, NoSQL, PostgreSQL, MongoDB, Docker, GraphQL, Git, Github, GitHub Actions, LLM, AI, RAG, OpenAI-GPT, Puppeteer, WebSockets, Socket.io, BLE, Linux, MacOS, ESP32 DevKit, C, FreeRTOS, PythonTop achievements:- Successfully migrated more than 100,000 IoT devices from Google IoT to AWS IoT Core.- Led a team of four that developed advanced BLE prototyping software and acted as a Project Owner.- Became a go-to person in IoT connectivity and Bluetooth Low Energy (BLE) technologies within the team.

I developed an Enterprise Resource Planning application (main project), which evolved from MVP to a critical solution employed by the business. I integrated external services with internal project management systems and developed user interfaces. I analyzed client requirements to effectively utilize both off-the-shelf libraries and custom features. I engineered CI/CD pipelines using GitLab CI, and enchanced automation with multiple workers. Furthermore, I implemented end-to-end tests using Cypress that executed within the CI. Aside from the main project, I developed a custom PDF generator microservice using Deno. I also conducted interviews and structured a recruitment process for new developers.Technologies used: Typescript, JavaScript, Node.js, Express, SQL, NoSQL, PostgreSQL, MongoDB, React, GraphQL, Apollo, React Query, Ant Design, Material UI, HTML, CSS, SASS, Cypress, Gitlab CI, Jest + RTL, Docker, Storybook, Webpack

I worked on network and security intelligence applications that aimed to optimize and secure enterprise infrastructure. The team consisted of over thirty professionals spread across multiple time zones.Technologies used: Typescript, Javascript, Node.js, Express, SQL, PostgreSQL, React, MobX, Redux, Jest + RTL, HTML, CSS, LESS, Docker, Git, GitHub