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CV

·300 words·2 mins

Vladimir Poplavskij
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Senior Backend Developer
Location: Vilnius, Lithuania | Email: v.poplavskij@gmail.com
LinkedIn: linkedin.com/in/wirtaw/ | Portfolio: wirtaw.github.io

Summary
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Highly skilled Senior Backend Developer with expertise in JavaScript, Node.js, databases, and Linux. Proven success in seamless system integrations, database optimization, and enhancing observability with modern tools. Dedicated to delivering high-quality, scalable solutions and leading teams to success.

Professional Experience
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Senior Backend Developer
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Shift4 | 2022 – Present

  • Led integration with 5+ services ensuring 99.9% uptime.
  • Resolved 50+ critical bugs, optimizing codebase by 20% and reducing user-reported issues by 30%.
  • Integrated observability tools (Grafana, Prometheus), reducing incident response time by 50%.
  • Optimized 40+ database queries, improving query performance by 10%.

Node.js Developer - Team Lead
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NDA | 2019 – 2022

  • Developed 20+ data crawlers processing 1TB+ of data monthly, improving data accuracy by 15%.
  • Led a team of 3, reducing processing time by 25%.
  • Managed 10+ microservices, increasing data accessibility by 20%.

Node.js Developer
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Diceus | 2018 – 2019

  • Engineered backend for financial integrations, improving data processing efficiency by 30%.
  • Modernized frontend systems, reducing page load time by 50%.
  • Implemented real-time bidding service facilitating 10,000+ bids daily.

Full Stack JavaScript Developer
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Adtarget.me | 2013 – 2018

  • Built a retargeting system enhancing data collection by 35%.
  • Integrated a banner designer increasing campaign creation speed by 50%.
  • Analyzed product imports, improving success rate by 40%.

Education
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  • B.Sc. in Computer Engineering, University of Białystok, 2009–2012
  • Certificate: MongoDB for Node.js Developers, MongoDB University
  • Certificate: OWASP 2021 Security, Shift4 Academy

Skills
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Programming: JavaScript, Node.js, TypeScript, Rust, Python, Ruby
Frameworks/Tools: Express, NestJS, Fastify, Vue.js, RabbitMQ, Redis
Databases: MongoDB, MySQL, MSSQL, PostgreSQL
Others: GIT, Unix/Linux Administration, CSS, PHP

Languages
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  • Polish: Native
  • Lithuanian: Native
  • Russian: Native
  • English: Intermediate
  • Ukrainian: Intermediate

Certifications & Projects
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