06/24/2026 updated


100 % available
Senior Developer | Enterprise Web Apps, CRM & API Integrations | Next.js, React, Node.js
Moscow, Russian Federation
Worldwide
JavaScriptDesign CodesPython (Programming Language)PostgreSQLNode.jsPayment GatewayRedisDesign EngineeringNext.jsSystems IntegrationTypeScriptWeb 2.0Web Application DevelopmentEnterprise Application SoftwareReact.js
I build custom B2B software for mid-size and enterprise clients — web platforms, dashboards, APIs, payment systems and business automation.
Core expertise:
• Full-stack web development: Next.js, React, TypeScript, Node.js, NestJS
• Backend & APIs: REST, WebSockets, microservices, third-party integrations
• Databases & infrastructure: PostgreSQL, Redis, Docker, CI/CD
• Fintech: payment gateways, escrow platforms, billing, webhooks, idempotency, anti-fraud
• Automation: Telegram bots, internal tools, CRM-style workflows
• QA-minded delivery: clean architecture, testing, staged releases, transparent progress
Industries I work in:
Logistics, fintech, marketplaces, SaaS, internal business systems, e-commerce backends.
Selected projects:
• Terminal information system — real-time dashboards, role-based access, hardware integration; processing time reduced by ~40%
• Secure peer-to-peer deals platform — escrow, arbitration, reputation system, real-time chat; 98% of deals close without disputes
• Payment gateway — unified API, provider routing, retries, duplicate protection; 99.95% successful transactions
• Telegram sales & automation bots — catalog, orders, admin panel, analytics
How I work:
Clear milestones, regular demos, milestone-based payments (escrow-friendly). I focus on systems that are safe to scale and maintain — not one-off landing pages.
Portfolio: https://escapesoft.ru
Contact: Telegram @EscapeSoftru | email old_hak@outlook.com
Experience
Professional experience5 - 10 years
Freelancer since2020
Languages
GermanGoodEnglishFluentRussianNative speaker