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Siamion Dauhun

@siamiondauhun

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Senior Frontend Developer with 5+ years in React and TypeScript.

Poland

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What I'm looking for

I am looking for a role that values collaboration, innovation, and continuous learning, where I can contribute to impactful projects and mentor others.

I am a Senior Frontend Developer with over 5 years of experience, primarily focused on the React and TypeScript ecosystem. My journey has allowed me to work on various projects, including mobile-first applications that enhance user engagement and satisfaction. I have a strong background in microfrontends, server-side rendering (SSR), and state management with Redux and GraphQL.

Throughout my career, I have taken on leadership responsibilities, mentoring junior developers and leading small teams. I introduced test-driven development (TDD) practices that significantly improved code reliability and reduced bugs. My collaborative work style has enabled me to work effectively in international, cross-functional teams, where I have contributed to architecture migrations and built design systems from scratch.

My commitment to quality is evident in my work, where I have achieved high testing coverage and optimized performance, resulting in faster and more reliable applications. I am passionate about fostering a culture of knowledge sharing and continuous improvement within my teams.

Experience

Work history, roles, and key accomplishments

Current

Senior Frontend Developer

Current

NDA

Sep 2024 - Present (1 year 2 months)

Developed mobile-first application, enhancing user engagement and satisfaction. Introduced TDD, improving code reliability and reducing bugs. Assisted in architecture migrations, ensuring seamless transitions.

React TypeScript TDD Redux GraphQL Jest Cypress WebdriverIO

Senior Frontend Developer

Neptune.ai

Jul 2023 - Present (2 years 4 months)

Built a design system from scratch, standardizing UI components. Collaborated with analysts to boost feature engagement by 40% through pattern analysis. Migrated 30% of the code to the new architecture.

React TypeScript Redux GraphQL Next.js Gatsby Chart.Js Tailwind SCSS Storybook Accessibility

Frontend Developer

Coherent Solutions

Oct 2022 - Present (3 years 1 month)

Helped achieving 90% testing coverage by introducing various testing practices. Interviewed candidates. Led the development of key features.

Frontend Developer

iTechArt Group

Jun 2020 - Present (5 years 5 months)

Designed and transitioned project to microfrontends, enhancing scalability and flexibility. Conducted interviews and code reviews, aiding in the successful hiring of new talent. Developed comprehensive e2e and unit tests, ensuring robust code quality.

React TypeScript TDD Jest Cypress WebdriverIO Redux GraphQL REST Tanstack Query Next.js Gatsby OAuth JWT Ionic Chart.Js Tailwind SCSS Storybook Accessibility CI CD GitHub Actions)Formik Yup Zod Keycloak Okta GitHub Actions

Frontend Developer

Freelance

Jun 2019 - Present (6 years 5 months)

Implemented front-end part from scratch. Solved SEO problems. Implemented adaptive design.

React SEO Adaptive HTML CSS JavaScript

Education

Degrees, certifications, and relevant coursework

Brest State Technical University

Bachelor of Information Technologies, Information Technologies

2017 - 2021

Completed a Bachelor of Information Technologies, gaining foundational knowledge in various IT disciplines. Focused on developing practical skills relevant to the technology sector.