Evgeny Krivov | Senior Full-Stack Developer (Payments)

Profile

Senior Full-Stack Developer (Payments)

5+ years of product engineering with React, TypeScript, Node.js, and Go.
Own payment infrastructure and monetization of B2C AI products: +70% subscription revenue, cancel rate down from ~21% to ~5.44%, fraud rate below 0.5%.
Build multi-provider payment systems for global markets on PSPs (Stripe, SolidGate, Airwallex) and payment orchestrators (Primer, TrueGate).

About

Senior Full-Stack Developer with 5+ years of product engineering experience in React, TypeScript, Node.js, and Go.

Over the last two years I have been building B2C AI products for video and audio content generation and owning their payment infrastructure and monetization: multi-provider payment systems for global markets on PSPs (Stripe, SolidGate, Airwallex, Ecommpay, Unlimit, CCBill) and payment orchestrators (Primer, TrueGate, Akurateko, GetOpenPay, SolidGate).

I use AI tools (Cursor, Claude Code) daily to speed up development without sacrificing quality.

Contact

Email contact@evgenykrivov.com Telegram @krivov_evgeny LinkedIn linkedin.com/in/evgenykrivov GitHub github.com/evgenykrivov CV Download PDF

Experience

Neiro AI

Oct 2024 - Present

Lead Full-Stack Developer

Built payment infrastructure for multiple B2C products on Stripe, SolidGate, Airwallex, Ecommpay, Unlimit, and CCBill with orchestrators (Primer, TrueGate, Akurateko, GetOpenPay, SolidGate) — multiple Stripe accounts, payment and dispute routing across projects.
Reworked product funnels and critical checkout steps, increasing subscription revenue by ~70% on a product with 7-figure annual revenue.
Implemented Stripe off-session payments and subscription billing, reducing cancel rate from ~21% to ~5.44%.
Built chargeback management (Chargeblast, Merchanto — Mastercard Alerts, Visa RDR) and fraud prevention with Stripe Radar, cutting fraud rate by ~80% and keeping it below 0.5%.
Built an in-house A/B testing system with locale targeting (events in an own DB, dashboards in Apache Superset); ran pricing and upsell tests across EN/ES/AR/FR/TR markets and localized components into 5+ languages.
Develop B2B/B2C video and audio products with React, TypeScript, Next.js, Node.js, and Go; +30% engagement through product changes driven by Amplitude, Firebase, and AppsFlyer analytics.
Design web application architecture, run code reviews and design reviews.

Supernova-dev

May 2023 - Sep 2024

Full-Stack Developer

Designed an in-house UI kit and layout methodology, speeding up development and simplifying project scaling.
Introduced analytics (Google Analytics, Firebase) and product hypotheses, improving user retention.
Delivered 6+ turnkey projects: B2B platforms, catalogs, and e-commerce.

Hvala.tips

Mar 2022 - May 2023

Frontend Developer

Developed the restaurant admin panel and the company's public website with Next.js, React, and Strapi.
Rewrote and integrated fiscal receipt generation with third-party services — payment-adjacent infrastructure.
Built the backend integration layer with Apollo Client (GraphQL).

Hoodies

May 2021 - Mar 2022

Frontend Developer

Developed reusable Docker-containerized services and code review documentation that reduced the bug count.

Education & languages

Baltic State Technical University "VOENMEH", St. Petersburg — Software Engineering.

Languages: Russian — native, English — B1–B2, French — A1.

Core stack

Payments & PSPs

Stripe (Billing, Radar, Disputes), SolidGate, Airwallex, Ecommpay, Unlimit, CCBill

Orchestration & payment ops

Primer, TrueGate, Akurateko, GetOpenPay, SolidGate, Subscription Billing, Chargeback Management (Chargeblast, Merchanto), Fraud Prevention

Frontend

JavaScript, TypeScript, React, Next.js, Redux Toolkit, Zustand, React Query, Apollo Client, Vite, SCSS, Material UI

Backend

Node.js, Go, Express, REST API, GraphQL, gRPC, WebSockets

Data & infra

PostgreSQL, MongoDB, Redis, Docker, Nginx, GitLab CI/CD

Analytics & AI tooling

A/B Testing, Apache Superset, Amplitude, Firebase, AppsFlyer, Cursor, Claude Code