Wiktor Plaga
@wiktorplaga
I build and scale secure backend APIs, services, and data models with Node.js, TypeScript, and Ruby.
PolandWhat I'm looking for
I've led backend work at OpenVetting.ai, cutting Rails API latency from over 10 seconds to under 500ms, eliminating N+1 issues, and migrating remaining MongoDB data to Postgres.
At ChartMogul, I built public API features and performance improvements, owned five public SDKs, resolved every open issue, and automated secure end-to-end releases. Across Salesloft, Klarna, Dutchie, and other product teams, I've owned backend services, API contracts, integrations, and features used by enterprise customers.
I enjoy code review, mentoring peers, and unblocking teams through practical prioritisation. Outside work, I build and ship products end to end, including AI companions and security-focused tools.
Experience
Work history, roles, and key accomplishments
Software Engineer
OpenVetting.ai
Jun 2025 - Present (1 year 2 months)
Backend lead with full ownership of the application's backend. Cut Rails API endpoint latency from over 10s to under 500ms, fixed N+1 issues, migrated MongoDB data to Postgres, and set up RSpec and Swagger integration tests with CI on GitHub Actions.
Developed features and performance improvements for the public ChartMogul API and owned all five public SDKs, resolving every open issue and automating releases with secure end-to-end CI/CD. Authored deterministic CI code checks including Bullet, Prosopite, custom audit scripts, and RuboCop cops.
Software Developer
Servant
Oct 2025 - Jan 2026 (3 months)
Built the quiz backend for 5 Love Languages with a Next.js API on Supabase and Vercel. Owned back-end development end to end, defining the API contract and data-access points consumed by the front-end and design teams.
Worked on financial and banking technologies as part of the Money-In-Money-Out team, owning features for the Klarna Wallet. Collaborated with UX/UI and QA teams and participated in agile rituals.
Integrated Zoom, Microsoft Teams and Google Meet into the conversations module for enterprise clients. Held full responsibility for 6 company micro-services and delivered back-end services and API integrations across the platform.
Developed a leading point-of-sale product, built back-end services, and integrated third-party APIs including Salesforce, Metrc, and LeafData. Owned the onboarding process for new engineers, improved code quality, and upgraded a legacy codebase from Ruby 2.2.8 to current versions.
Software Developer
YND
May 2020 - Oct 2020 (5 months)
Developed back-end and admin panel for ordering applications in fintech and gastronomy sectors. Conducted code audits for security, performance, and SQL best practices, and integrated static and runtime analysis tools.
Education
Degrees, certifications, and relevant coursework
Wiktor hasn't added their education
Don't worry, there are 90k+ talented remote workers on Himalayas
Tech stack
Software and tools used professionally
Chargebee
Google Cloud Platform
GitHub
RuboCop
Kubernetes
GitHub Actions
Salesforce
Tauri
MySQL
PostgreSQL
MongoDB
Node.js
Ruby on Rails
Next.js
Trailblazer
Tailwind CSS
Redis
React
jQuery
JavaScript
HTML5
CSS 3
Ruby
Sinatra
Rails API
hapi
PM2
Linux
iOS
Recurly
GraphQL
WordPress
Vercel
TypeScript
RSpec
Git
Amazon Web Services (AWS)
SQL
SalesLoft
ChartMogul
Supabase
Playwright
Vite
Inertia.js
Android
Availability
Location
PolandAuthorized to work in
Salary expectations
Social media
Job categories
Interested in hiring Wiktor?
You can contact Wiktor and 90k+ other talented remote workers on Himalayas.
Message WiktorGet matched with your dream remote job
Sign up now and join over 250,000+ remote workers who receive personalized job alerts, curated job matches, and more for free!
