SPSerhii Poshtarenko
@serhiiposhtarenko
Passionate Full Stack Developer specializing in user-friendly applications.
UkraineWhat I'm looking for
I am a passionate Full Stack Developer with over 7 years of experience in creating dynamic and responsive user interfaces. My mission is to bridge the gap between design and technology, transforming ideas into visually appealing and user-friendly applications. I have a strong focus on scalability and revenue growth, particularly in the hotel services sector, where I have contributed to top-tier applications.
Throughout my career, I have worked with various technologies including Next.js, React, Redux, TypeScript, and Node.js. I have successfully delivered projects in challenging timeframes, such as a Healthcare platform app, and have optimized application performance using cloud solutions like Google Cloud Platform and AWS. My commitment to quality is reflected in my meticulous code reviews and the introduction of Agile methods to enhance collaboration and productivity.
In addition to my technical skills, I have a proven track record of improving system scalability and flexibility through the implementation of microservices. I am always eager to learn and adapt to new technologies, ensuring that I remain at the forefront of the ever-evolving tech landscape.
Experience
Work history, roles, and key accomplishments
Full Stack Web & Mobile Developer
Self Employed
Mar 2025 - Present (2 months)
Contributed to prioritizing scalability and revenue growth for client applications in the hotel services sector, utilizing technologies like Next.js, React, and Node.js. Optimized application scalability and performance using cloud solutions such as GCP, Azure, and AWS Lambda, while enforcing coding standards and implementing testing protocols.
Frontend Developer
Yalantis
Jan 2023 - Feb 2025 (2 years 1 month)
Collaborated with a team to deliver a Healthcare platform app, leveraging technologies like TypeScript, Angular.js, React.js, and Redux. Engineered a Flowchart Tool that streamlined support ticket resolution, resulting in cost savings and improved SLA compliance. Deployed applications and services by collaborating with an internal cloud provider.
Web Developer
Leobit
May 2020 - Dec 2022 (2 years 7 months)
Architected and implemented a full tech stack for an Agile board app with GitHub integration, utilizing TypeScript, Node.js, NestJS, React, and Redux. Managed server and database administration duties while contributing to API development for a recruiting CRM web app using Flask and SQLAlchemy. Developed a multi-tenant back-end and tenant discovery service for a mobile feedback app.
Javascript Developer
Artelogic
Sep 2019 - Apr 2020 (7 months)
Developed front end using React.js and Redux, building over 100 components and making API calls. Redesigned the company website, increasing visitor clicks by 37% and customer referrals by 12%. Assisted in developing server-based Node.js and AWS software and implemented search functionality using Elasticsearch.
Education
Degrees, certifications, and relevant coursework
Ukrainian Academy of Printing
Bachelor of Science, Computer Science
2018 - 2019
Focused on core computer science principles, including programming, data structures, and algorithms. Gained foundational knowledge in software development and system design.
National Forestry University of Ukraine
Bachelor's Degree, Computer Science
2015 - 2018
Studied fundamental concepts in computer science and software engineering. Developed skills in various programming languages and problem-solving techniques.
Tech stack
Software and tools used professionally
Availability
Location
UkraineAuthorized to work in
Job categories
Skills
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