Anton P.

Senior Full-Stack Engineer | SaaS & FinTech | React, Node.js, Next.js

I build and scale production SaaS and FinTech platforms using React, Next.js, Node.js and Python. Relevant FinTech experience: I contributed to Trastra, a multi-currency wallet and neobank product. My work included backend and mobile application development, KYC/AML onboarding, card issuing, Stripe Issuing, fraud detection and payout integrations. In a long-term engagement on a global commerce platform, I have worked on React/Node product functionality, performance optimisation, real-time content updates and authentication flows. I am most useful when a product needs one engineer who can connect business requirements with frontend delivery, backend APIs, data modelling and production deployment. What I can own: • React and Next.js application development • Node.js and Python services, APIs and integrations • Authentication, role-based access and payment flows • PostgreSQL / MongoDB data modelling and performance work • Docker, CI/CD and AWS-based delivery • Existing-product scaling, migrations and technical-debt reduction Core stack: React, Next.js, Node.js, TypeScript, JavaScript, Python, FastAPI, PostgreSQL, MongoDB, Docker, CI/CD and AWS. If you need to move an existing SaaS or FinTech product forward without splitting ownership across several freelancers, I can help from technical discovery through delivery and release.