Sebastian Pavel - Fullstack Developer for Chess Platforms

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Romania

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Experience

Jan 2025 - Jan 2026

1 year 1 month

Senior Frontend Developer

Bitpanda

Technologies: React, Web3.js, Ethers.js, TypeScript, Vite, NextJs, GraphQL, Vitest, Playwright, AWS, TDD, BDD
Contributed to the development and performance optimization of Bitpanda’s high-traffic crypto trading platform
Built and maintained scalable, reusable UI components using React and Next.js, integrating with complex GraphQL APIs and Web3 wallet workflows
Created custom React hooks and composables aligned with the company’s design system, improving DX and maintainability
Implemented end-to-end and unit testing using Playwright and Vitest, ensuring frontend stability for critical trading features
Collaborated closely with design and backend teams to deliver performant and user-friendly features
Participated in code reviews, sprint planning, and advocated for best practices in performance and clean architecture

Jan 2024 - Dec 2024

1 year

Full Stack Developer

Monterail

Technologies: React, NextJs, TypeScript, Node.js, Express.js, WebSockets, PostgreSQL, Redis, AWS, CI/CD, TDD, BDD
Built an online casino platform from scratch including real-time gaming and payment integration
Led frontend implementation using React and Next.js, building dynamic game interfaces, modals, and wallet-connected flows
Integrated games from multiple third-party providers and developed the full payment processing stack (Stripe, bank transfer, Apple Pay, Google Pay)
Engineered a scalable backend in Node.js with WebSocket infrastructure for low-latency communication, and used Redis for live caching and session control
Applied performance profiling techniques to ensure minimal latency during gameplay and high payment throughput
Designed and maintained deployment workflows with CI/CD and AWS, including secure credential management and build previews
Participated in architectural decisions, code reviews, and collaborated daily with QA, design, and backend teams

Sep 2022 - Jan 2024

1 year 5 months

Romania

Frontend Developer

Luxoft / Deutsche Bank

Technologies: React, Redux, TypeScript, Recharts, Material UI, Jest
Delivered enterprise-grade internal dashboards with complex data visualizations (Recharts) for financial and risk analysis tools
Built modular React components using TypeScript and Material UI, emphasizing testability, reusability, and scalability across teams
Collaborated with distributed teams across QA, UX, DevOps, and backend, ensuring smooth sprint delivery and high-quality code
Participated in code reviews and architectural discussions, helping transition legacy logic into performant, maintainable modules

Mar 2022 - Sep 2022

7 months

Romania

Full Stack Developer

Chess Coders

Technologies: React, NextJs, Web3.js, Node.js, Express.js, Solidity, PostgreSQL, Redis, CI/CD, TDD, BDD
Developed a DeFi staking platform with wallet integration (MetaMask), real-time contract data, and secure user flows
Built the staking dashboard UI with React and Next.js, featuring live wallet balances, APR calculations, and reward state tracking
Implemented key smart contract flows: minting, staking, reward claiming, withdrawal — with frontend and backend logic integrated
Engineered a performant Web3 interface using Ethers.js and Web3.js, handling gas estimation, transaction state, and error handling, ensuring smooth smart contract execution in production

Feb 2021 - Jan 2023

2 years

Frontend Mentor

Codecool

Taught frontend and web development to students, reviewed projects and offered technical guidance

Jan 2020 - Feb 2022

2 years 2 months

Gżira, Malta

Frontend Developer

Microgaming

Technologies: React, GraphQL, TypeScript, .NET Core, SQL Server, PostgreSQL, Redis, Docker, Kubernetes, GitLab, Material UI, TDD
Developed a Jackpot Controller Web App with a modern React UI and GraphQL API
Implemented custom hooks, Apollo Client caching, and used Enzyme for testing
Led a frontend team of 4 developers

Jun 2019 - Dec 2019

7 months

Iași, Romania

Full Stack Developer

Real Devs

Technologies: React, Node.js, PHP, WordPress, PostgreSQL, MySQL, CSS/SCSS
Built pixel-perfect websites and custom WordPress plugins
Worked on e-commerce projects and internal tooling

Jun 2019 - Dec 2019

7 months

Iași, Romania

Full Stack Developer

Safeguard Global

Technologies: React, Node.js, NestJs, Python, GoLang, PostgreSQL, Redis, AWS
Redesigned legacy applications, migrating to functional components and hooks
Led a team of 4 junior developers and contributed across front and back end

Jan 2019 - Jun 2019

6 months

Iași, Romania

Frontend Developer

Neuro Software

Technologies: React, Java/Spring, MySQL
Led frontend migration to React Hooks
Wrote unit tests and documentation, coordinated a team of 3 juniors

Jan 2018 - Jun 2018

6 months

Suceava, Romania

Fullstack Developer

Your Consulting

Technologies: AngularJS, Node.js, PostgreSQL
Developed internal accounting and management systems

Jan 2017 - Dec 2017

1 year

Suceava, Romania

Junior Database Administrator

Experware

Technologies: SQL Server, PowerShell, Active Directory
Managed and monitored SQL infrastructure and Office 365 licensing
Created automation scripts and user access rules

Creator & Fullstack Developer

Live Chess Platform

Technologies: React, Next.js, Node.js, Redis, MongoDB, Docker, Chess.js
Built a real-time chess analytics and live games/rating platform from scratch
Integrated Chess.js for move validation and game logic
Live analysis using top chess engines
Designed dynamic player dashboards with historical stats and real-time ELO tracking
Used Redis for live caching and MongoDB for player/tournament persistence
Containerized the platform with Docker for streamlined development and deployment

Industry experience

See where this freelancer has spent most of their professional time.

Experienced in Information Technology, Banking and Finance, Education, and Professional Services.

Information Technology

Banking and Finance

Education

Professional Services

Business area experience

See which departments and functions this freelancer has contributed to most.

Experienced in Information Technology, Product Development, Business Intelligence, Quality Assurance, and Accounting.

Information Technology

Product Development

Business Intelligence

Quality Assurance

Accounting

Summary

Senior Frontend Developer with over 7 years of experience building scalable and modern web applications using React, Next.js, and TypeScript. Strong proficiency in backend technologies including Node.js, REST APIs, and WebSockets. Proven track record in fintech, iGaming, and blockchain industries. Skilled in writing clean, maintainable code and mentoring junior developers.

Skills

Frontend: React, Next.Js, Typescript, Redux, Graphql, Material Ui, Shadcn/Ui
Backend: Node.Js, Express, Websockets, Rest Apis
Database: Postgresql, Redis, Mysql, Sql Server
Cloud & Devops: Aws, Vercel, Docker, Kubernetes, Ci/Cd, Git, Gitlab
Other: Web3.Js, Ethers.Js, Wordpress, Agile/Scrum, Jira

Languages

Romanian

Native

English

Advanced

Education

Sep 2014 - Jun 2018

University of Suceava

Bachelor in Computer Science · Computer Science · Suceava, Romania

Statistics

Experience

Total positions 12

Experience in Information Technology 6 y

Avg length 11 m

Longest experience 2 y 1 m

Global experience

Countries worked in 2 (Romania, Malta)

Primary country Romania

Expertise

Recent roles Senior Frontend Developer, Full Stack Developer, Frontend Developer

Main industries Information Technology, Banking and Finance, Education

Main business areas Information Technology, Product Development, Business Intelligence

Qualifications

Highest degree Bachelor

Profile

Member since

January 2026

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Frequently asked questions

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Sebastian speaks the following languages: Romanian (Native), English (Advanced).

Sebastian has at least 8 years of experience. During this time, Sebastian has worked in at least 6 different roles and for 11 different companies. The average length of individual experience is 1 year and 9 months. Note that Sebastian may not have shared all experience and actually has more experience.

Based on recent experience, Sebastian would be well-suited for roles such as: Senior Frontend Developer, Full Stack Developer, Frontend Developer.

Sebastian's most recent position is Senior Frontend Developer at Bitpanda.

In recent years, Sebastian has worked for Bitpanda, Monterail, Luxoft / Deutsche Bank, Chess Coders, and Codecool.

Sebastian is most experienced in industries like Information Technology, Banking and Finance, and Education. Sebastian also has some experience in Professional Services.

Sebastian is most experienced in business areas like Information Technology, Product Development, and Business Intelligence. Sebastian also has some experience in Quality Assurance and Accounting.

Sebastian has recently worked in industries like Information Technology, Banking and Finance, and Education.

Sebastian has recently worked in business areas like Information Technology, Product Development, and Business Intelligence.

Sebastian holds a Bachelor in Computer Science from University of Suceava.

The availability of Sebastian needs to be confirmed.

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Experience

Senior Frontend Developer

Bitpanda

Full Stack Developer

Monterail

Frontend Developer

Luxoft / Deutsche Bank

Full Stack Developer

Chess Coders

Frontend Mentor

Codecool

Frontend Developer

Microgaming

Full Stack Developer

Real Devs

Full Stack Developer

Safeguard Global

Frontend Developer

Neuro Software

Fullstack Developer

Your Consulting

Junior Database Administrator

Experware

Creator & Fullstack Developer

Live Chess Platform

Industry experience

Business area experience

Summary

Skills

Languages

Education

University of Suceava

Bachelor in Computer Science · Computer Science · Suceava, Romania

Statistics

Experience

Global experience

Expertise

Qualifications

Profile

Frequently asked questions

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