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I’m a Full-Stack JavaScript/TypeScript Developer focused on building scalable web systems. I design and implement modular REST APIs, robust authentication & authorization (JWT, OAuth 2.0, RBAC), and both relational and NoSQL data models (PostgreSQL, MongoDB). I own features end-to-end from architecture decisions to deployment, with a strong emphasis on clean architecture, reliability, and long-term scalability. I thrive in collaborative environments, resolving production issues, and delivering reliable software across the full development lifecycle. I’m comfortable taking ownership of complex problems, communicating clearly with teammates, and continually refining systems for performance and resilience.…I’m a Full-Stack JavaScript/TypeScript Developer focused on building scalable web systems. I design and implement modular REST APIs, robust authentication & authorization (JWT, OAuth 2.0, RBAC), and both relational and NoSQL data models (PostgreSQL, MongoDB). I own features end-to-end from architecture decisions to deployment, with a strong emphasis on clean architecture, reliability, and long-term scalability. I thrive in collaborative environments, resolving production issues, and delivering reliable software across the full development lifecycle. I’m comfortable taking ownership of complex problems, communicating clearly with teammates, and continually refining systems for performance and resilience.

Vitalina Yefimova

PRO

Full Stack Developer, Web Developer, Back-End Developer, +2

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I’m a Full-Stack JavaScript/TypeScript Developer focused on building scalable web systems. I design and implement modular REST APIs, robust authentication & authorization (JWT, OAuth 2.0, RBAC), and both relational and NoSQL data models (PostgreSQL, MongoDB). I own features end-to-end from architecture decisions to deployment, with a strong emphasis on clean architecture, reliability, and long-term scalability. I thrive in collaborative environments, resolving production issues, and delivering reliable software across the full development lifecycle. I’m comfortable taking ownership of complex problems, communicating clearly with teammates, and continually refining systems for performance and resilience.…I’m a Full-Stack JavaScript/TypeScript Developer focused on building scalable web systems. I design and implement modular REST APIs, robust authentication & authorization (JWT, OAuth 2.0, RBAC), and both relational and NoSQL data models (PostgreSQL, MongoDB). I own features end-to-end from architecture decisions to deployment, with a strong emphasis on clean architecture, reliability, and long-term scalability. I thrive in collaborative environments, resolving production issues, and delivering reliable software across the full development lifecycle. I’m comfortable taking ownership of complex problems, communicating clearly with teammates, and continually refining systems for performance and resilience.

Available to hire

Calgary, Canada

I’m a Full-Stack JavaScript/TypeScript Developer focused on building scalable web systems. I design and implement modular REST APIs, robust authentication & authorization (JWT, OAuth 2.0, RBAC), and both relational and NoSQL data models (PostgreSQL, MongoDB). I own features end-to-end from architecture decisions to deployment, with a strong emphasis on clean architecture, reliability, and long-term scalability.

I thrive in collaborative environments, resolving production issues, and delivering reliable software across the full development lifecycle. I’m comfortable taking ownership of complex problems, communicating clearly with teammates, and continually refining systems for performance and resilience.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Work Experience

Full-Stack Developer (Production Team) at StrikeShop Platform

October 1, 2025 - Present

Architect, maintain, and scale 80+ REST API endpoints in NestJS across authentication, users, teams, events, orders, notifications, and admin modules. Build and own full authentication & authorization system (JWT, OAuth 2.0 Google/Facebook, bcrypt, password reset flows, RBAC/ACL with global guards and decorators). Design and evolve PostgreSQL schemas with Prisma, writing migrations and indexes. Design and maintain MongoDB data models. Integrate SendGrid for transactional email with Handlebars templates. Stabilize production deployments by managing Vercel releases and resolving build/runtime issues. Resolve production issues related to Next.js server/client boundaries, routing, and Suspense integration. Reduce API response inconsistencies by implementing a centralized global exception layer mapping database errors to consistent HTTP responses. Enforce strict DTO validation (class-validator + ValidationPipe) and maintain end-to-end TypeScript type safety. Deliver end-to-end full-stack fe

Associate at TJX Canada – Winners

October 1, 2024 - Present

Work in a high-volume retail environment, maintaining operational efficiency and accuracy under pressure. Collaborate with team members to achieve performance goals, demonstrating adaptability and accountability.

Personal Banking Advisor at Kredobank & OTP Bank

August 1, 2016 - February 1, 2022

Progressed from Credit Manager to Personal Banking Advisor, specializing in financial data analysis and regulatory compliance. Managed client portfolios and delivered data-driven financial solutions aligned with regulatory compliance standards. Maintained detailed documentation and collaborated cross-functionally to meet performance targets.