full stack developer for stablecoin payments

HireHi; United States; Remote; USD 120,000 - 180,000; Full time

Benefits offered by this job

Fully remote work in internationalteam

AI tooling paid by the company

Competitive salary based on review

Job summary

Utorg ищет опытного frontend-разработчика для создания и сопровождения платежных интерфейсов и интеграций, преимущественно на React + TypeScript. Ваша работа включает участие в архитектуре, разработку виджетов и бэк-логики на Java / Spring Boot, а также внедрение AI-воркфлоу и современных UI-решений.

Требуется опыт работы с крупными код-базами, знание REST APIs, и умение работать в международной команде. Вакансия предполагает полностью удалённый режим и конкурентный уровень оплаты.

Qualifications

• 5+ лет коммерческой разработки фронтенда, 3+ года с React + TypeScript в продакшене.
• Сильные современные навыки React: управление состоянием, формами, маршрутизацией и производительностью.
• Опыт работы с крупными легаси код-базами, а не только с зелёными проектами.
• Опыт backend-части на Java: REST API, PostgreSQL, индексы и миграции; можно вносить изменения в сервисах.
• Ежедневная работа с агентно-ориентированной разработкой в рамках Claude/Codex или аналогичного инструмента.

Responsibilities

• Разрабатывать новые фичи frontend, осуществлять изменения на бэкенде по мере необходимости.
• Владеть frontend частью платежных продуктов и формировать общие AI-рабочие процессы.
• Создавать embeddable on/off-ramp виджет с KYC, платежами и 3-D Secure.
• Разрабатывать страницы оплаты продавца и бэк-офиса; заменить устаревшую админ-панель.
• Реализовывать API и бизнес-логику в Java / Spring Boot сервисах.
• Вести фичи от тикета до продакшна: UI, API контракты, тесты, релизы, мониторинг.
• Принимать архитектурные решения фронтенда и мигрировать к современному стеку.
• Развивать AI-ориентированные разработки: файлы контекста, команды, PR-ревью, агенты.
• Проверять код коллег и агентов на высокое качество.

Skills

Frontend development

React

TypeScript

API integration

AI workflows

Tools

Java

Spring Boot

PostgreSQL

Playwright

Vitest

Jest

OpenAPI

Job description

Описание:

Utorg builds infrastructure for stablecoin payments, including on- and off-ramps, self-custodial wallets, and crypto cards. Its app serves over 2 million users across 130+ countries, while its B2B payment rails support more than 2,100 platforms.

Задачи:

• Build product features end-to-end, primarily on the frontend, and make backend changes when needed


• Own the frontend of payment products and help establish shared AI workflows across the team


• Develop an embeddable crypto on/off-ramp widget with KYC, card payments with 3-D Secure, alternative payment methods, and a customer account area for multiple white-label brands


• Build hosted merchant checkout pages, from one-step checkouts to multi-step flows with KYC and compliance screens


• Develop back-office admin apps for operations, compliance, and support; replace the legacy admin with a modern-stack application


• Implement API endpoints and business logic in Java / Spring Boot services


• Own features from ticket to production, including UI, API contracts, backend changes, tests, releases, and monitoring


• Make frontend architecture decisions and drive migrations from the legacy admin and older UI libraries to the modern stack, including stricter type checks


• Build and improve AI-driven development workflows, including project context files, shared skills and commands, automated PR reviews in CI, and agent-driven end-to-end and visual checks


• Review teammates' and agents' code and maintain a high quality bar


• Work with product, design, QA, and backend engineers in a weekly release cycle

Требования:

• 5+ Years of commercial frontend development, including 3+ years with React + TypeScript in production


• Strong modern React skills, including server-state management, client state, forms, routing, and performance


• Comfortable working with large legacy codebases, not only greenfield projects


• Production backend experience in at least one language; able to design REST APIs, work with PostgreSQL schemas, indexes, and migrations, and ship changes in Java services


• Daily experience with agentic development using Claude Code, Codex, or a similar agent, beyond autocomplete


• Maintain project context files and create custom skills, commands, or subagents


• Connect agents to tools through MCP, such as issue trackers, GitHub, Figma, databases, and browsers


• Use a plan, implement, and verify workflow where agents demonstrate their work with tests, type checks, and browser automation


• Run agents in parallel and headless, such as an AI review bot in CI


• Critically review agent output and understand failure modes, including invented APIs, scope creep, incorrect test fixes, leaked secrets, and prompt injection


• Keep up with changes in agentic tools and incorporate effective updates into workflows


• Experience with Playwright for end-to-end tests and Vitest/Jest for unit and integration tests


• Security-minded when handling real money, personal data, auth tokens, iframes, and cross-origin messaging


• Fluent Russian and English sufficient to read and write technical texts


• Будет плюсом: card payment flows and 3-D Secure, alternative payment methods, KYC SDKs, fraud prevention, open banking, frontend Web3 with viem / ethers, wallet connections, EIP-712 signing, multi-brand white-label products, theming, design tokens, OpenAPI-generated clients, TanStack Router / Table, Kotlin, Spring Boot, NATS, Temporal, Docker, Kubernetes, GitHub Actions, GitOps (FluxCD), Cloudflare Workers

Условия:

• AI tooling is paid for by the company


• Competitive salary based on individual performance review


• Fully remote work in an international team


• Technical interview includes a live task solved with your own AI agent while sharing your screen, plus a design discussion