Михайло

Mikhail Sergeev
29 Romana Ratushnogo Street, Kyiv
[open contact info](look above in the "contact info" section)
[open contact info](look above in the "contact info" section)
MishaSergeev
[open contact info](look above in the "contact info" section)
Portfolio: crazy-leather-things.vercel.app
Born 20 July 1994

HARD SKILLS

Frontend • React 18+ (Hooks, Context API, Suspense, Concurrent Rendering)
• TypeScript, JavaScript (ES6+), Next.js, Vite
• Redux Toolkit, Zustand, Recoil
• React Query, Apollo Client
• UI frameworks: TailwindCSS, Material UI, Kendo UI
• Adaptive layout (Flex, Grid, media queries, accessibility, i18n)
• Testing: Jest, React Testing Library, Cypress
• Figma (wireframes prototyping)

Backend • Node.js (Express, Nest.js), REST API, GraphQL
• Databases: Oracle, SQL/XML, PostgreSQL, MongoDB
• ORM/ODM: Prisma, TypeORM, Mongoose
• Authentication and Authorization: JWT, OAuth, RBAC
• WebSockets / real-time: Socket.IO, Nest.js

DevOps / Infrastructure • Git (Git Flow, PR review, branching strategies)
• Docker, Docker Compose (deployment, local environments)
• CI/CD (GitHub Actions, GitLab CI/CD, Jenkins)
• Cloud basics: AWS, GCP, Vercel, Railway, Nhost

Languages • English — B2+ (Upper-Intermediate)
• Ukrainian — native
• Russian — native

SOFT SKILLS

• Strong communication, teamwork, mentoring experience
• Code review and mentoring
• Agile/Scrum workflow (planning, retros, demos, code reviews)
• Problem-solving mindset — focus on business logic and product value
• Analytical and logical thinking
• Fast learner, persistent, well-organized
 WORK EXPERIENCE
July 2020 – Present Full-Stack Developer
SD Solution — Pepperi: B2B Sales Platform for CPG Brand Distributors
• Developed and maintained complex React + Node.js applications for large-scale B2B e-
commerce solutions.
• Implemented custom UI components with React, TypeScript, TailwindCSS, Material UI,
Kendo UI.
• Developed and supported custom solutions such as: custom Home Page, quick order with
barcode scanner, copy order forms, aging item list forms, and forms for reports, graphs and
charts.
• Developed and optimized RESTful and GraphQL APIs (Express/Nest.js), reducing query re-
sponse time by an average of 20 %.
• Integrated third-party APIs and payment/delivery providers such as PayPal, AfterPay.
• Worked with Oracle, SQL/XML, PostgreSQL, MongoDB — schema design, query optimization.
• Implemented real-time features such as live order updates and notifications using WebSock-
ets/Socket.IO.
• Built internationalization (i18n) support for multilingual clients.
• Improved frontend performance using React Query, caching, lazy loading, SSR/SSG with
Next.js.
• Collaborated in Agile/Scrum teams, participated in sprint planning, code reviews, and ment-
oring junior developers.
• Contributed to CI/CD pipelines and deployment using Docker, GitHub Actions, Vercel.
• Wrote and maintained unit, integration, and end-to-end tests using Jest, React Testing Library,
Cypress to ensure application stability and quality.

March 2020 – July 2020 QA Engineer
Startup project
• Designed and automated Node.js application testing.
• Developed end-to-end test scenarios with Jest/Cypress.

December 2019 – July 2020 Front-End Developer
Incomtech-Project LTD, Kyiv
• Updated and maintained company’s web platforms.
• Implemented UI changes, improved site performance and SEO.

January 2016 – December 2019 Electronic Engineer
Incomtech-Project LTD, Kyiv
• Worked with customer database, prepared technical and commercial offers.
• Participated in international exhibitions and business trips.

EDUCATION
2018 – 2019 ProgKiev school
Programming courses ”FULL STACK”:
• Back-end: console apps in Java with SQL integration (restaurant menus, apartment data-
base)
• Front-end: HTML/CSS/JS shop landing page for sunglasses

2011 – 2017 National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic In-
stitute”
Bachelor’s and Master’s degree, Faculty of Electronics, Micro- and Nano-system Technologies
• Diploma

ADDITIONAL INFORMATION
About me • My main goal is professional growth in web development. I am not afraid of challenges
and always ready to learn new technologies. For me, it is important to stay up-to-date
with modern tools and deliver meaningful solutions that bring real value.

Pet Project • Crazy Leather Things — e-commerce demo (React, Node.js, GraphQL, Nhost, MUI, clsx).

Interests • Traveling, science, engineering

Driver license • Category B