Tomas Valent is a Ruby on Rails developer with 14 years of experience building and scaling web platforms from early-stage products to million-user ed‑tech services. He has led backend architecture, DevOps and teams at Pobble—taking the product to over 1.19 million accounts—and recently contributed to high-scale direct-mail infrastructure at PostPilot. Tomas brings deep expertise in Rails, PostgreSQL, Sidekiq, Docker and AWS, and applies pragmatic security hygiene demonstrated by significant contributions to the devise_security_extension open-source project (session binding, attempt counters and session limits). Comfortable in remote, async teams and Shape Up workflows, he combines hands-on coding with architecture and operational ownership. Early work across PHP and social platforms gave him broad full‑stack grounding that still informs his API and UX decisions. Based in London, he favors robust, maintainable systems that balance developer ergonomics with industrial security standards.
14 years of coding experience
9 years of employment as a software developer
school aimed on Electrical Engineering and Computer Science, school aimed on Electrical Engineering and Computer Science at Technical secondary school of Joseph Murgas
Social Philosophy, Social Philosophy at Univerzita Mateja Bela v Banskej Bystrici
An enterprise security extension for devise, trying to meet industrial standard security demands for web applications.
Role in this project:
Back-end Developer & Security Engineer
Contributions:15 commits, 10 PRs, 14 comments in 3 months
Contributions summary:Tomas primarily contributed to enhancing the security features of the Devise security extension. They focused on implementing session security measures, specifically making sessions non-transferable by binding them to user agent and IP addresses, and adding session limitable features. They also incorporated a paranoid verification feature with attempts counters to prevent unauthorized access.
Contributions:17 commits, 3 PRs, 12 pushes in 1 year 7 months
railsrubyactionmailer
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