
Henry Varona
Caracas, Venezuela
Henry Varona
Senior Backend Engineer - Web3 & Fintech
Category : Web development
Are you looking for a bulletproof, scalable server-side solution for your platform? I am a Senior Backend Engineer with extensive experience designing and implementing robust backend infrastructures, cloud microservices, and secure financial integrations.
I help startups and established companies build high-throughput systems that run seamlessly, handle heavy data loads, and prevent critical failures.
What I can do for your project:
• Backend & API Development: Design and deployment of clean, maintainable RESTful and GraphQL APIs using cutting-edge backend frameworks.
• Architecture & Microservices: Migrating monolithic systems to scalable microservices, ensuring optimal communication and resource management.
• Database Management: Structuring and optimizing relational (SQL) and non-relational (NoSQL) databases for ultra-fast query execution.
• Payment & Fintech Integrations: Connecting secure payment processors, core financial gateways, or Web3/crypto payment servers (BTC/USDT/USDC).
• Cloud & Devops: Containerization (Docker), CI/CD pipelines, and cloud infrastructure deployment for maximum uptime.
Why work with me?
I don't just write code; I design systems engineered for real-world growth and security. I offer transparent communication, predictable delivery timelines, and direct collaboration.
*Payment Notice: To streamline international contracts and accelerate project kickoff, I accept direct global settlements via stablecoins (USDT/USDC) and Bitcoin (BTC).*
I help startups and established companies build high-throughput systems that run seamlessly, handle heavy data loads, and prevent critical failures.
What I can do for your project:
• Backend & API Development: Design and deployment of clean, maintainable RESTful and GraphQL APIs using cutting-edge backend frameworks.
• Architecture & Microservices: Migrating monolithic systems to scalable microservices, ensuring optimal communication and resource management.
• Database Management: Structuring and optimizing relational (SQL) and non-relational (NoSQL) databases for ultra-fast query execution.
• Payment & Fintech Integrations: Connecting secure payment processors, core financial gateways, or Web3/crypto payment servers (BTC/USDT/USDC).
• Cloud & Devops: Containerization (Docker), CI/CD pipelines, and cloud infrastructure deployment for maximum uptime.
Why work with me?
I don't just write code; I design systems engineered for real-world growth and security. I offer transparent communication, predictable delivery timelines, and direct collaboration.
*Payment Notice: To streamline international contracts and accelerate project kickoff, I accept direct global settlements via stablecoins (USDT/USDC) and Bitcoin (BTC).*
Working hours
- Monday:08h00 To 18h00
- Tuesday:08h00 To 18h00
- Wednesday:08h00 To 18h00
- Thursday:08h00 To 18h00
- Friday:08h00 To 18h00
- Saturday:Not available
- Sunday:Not available
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- Senior Backend & API Developer40 $ - Per hourNeed a rock-solid server-side solution? I design and deploy high-performance RESTful/GraphQL APIs, microservices architectures, and robust backend logic. Optimized for high data loads, security, and ...
- 🇬🇧 English
- 🇪🇸 Spanish
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