Resume

My professional experience and qualifications

Summary

Senior Backend Engineer with 5+ years of experience building production-grade APIs and scalable systems using C# and .NET. Currently Co-Founder & Software Engineer at Juby, leading full-stack development and blockchain integration on Stellar/Soroban. Strong background in high-traffic systems, performance optimization (up to 100% improvements), production deployments, and backend architecture. Bridging Web2 backend engineering with Web3 infrastructure and smart contract development.

Work Experience

Co-Founder & Software Engineer

Juby

Sept 2025 - Present

Remote

  • Architected and deployed smart contracts on Soroban testnet, enabling non-custodial savings flows.
  • Designed account abstraction wallet system with email-based onboarding, reducing user friction from wallet setup to <2 minutes.
  • Led full-stack architecture (Next.js + backend services + blockchain integration) from concept to functional POC.
  • Built on-chain/off-chain integration layer to synchronize financial simulations with smart contract execution.

Tech stack: Rust, Soroban, Stellar, Next.js

Co-Founder & Software Engineer

Ferne::Labs

Oct 2024 - Sept 2025

Remote

  • Led backend and smart contract architecture for fully on-chain multiplayer game prototypes.
  • Designed scalable infrastructure using PostgreSQL and Redis for real-time state synchronization.
  • Implemented Cairo-based contracts for deterministic on-chain game logic.
  • Established reusable backend-contract integration patterns for future titles.

Tech stack: C#, Cairo, Solidity, PostgreSQL, Redis, Unity

.NET Developer

America Virtual

Aug 2024 - Nov 2024

Argentina

  • Developed and maintained backend services for AGIP public platform serving millions of users.
  • Implemented new REST API features under strict SLA and production constraints.
  • Optimized database queries and indexing strategies to improve API response times.
  • Collaborated within enterprise environment using OpenShift and SQL Server.

Tech stack: C#, REST, .NET 7, SQL Server, MongoDB, OpenShift, HTML, CSS, NuxtJS, Vuetify

Server Engineer

Trick Studio

Sept 2023 - July 2024

Argentina

  • Built LiveOps backend tools supporting event configuration for Stumble Guys.
  • Identified and resolved security vulnerabilities in production backend services.
  • Developed administrative dashboards used by internal game operations teams.

Tech stack: C#, Unity, REST, .NET 7, .NET 8, SQL Server, Docker, Azure, HTML, CSS, Blazor, Unit Testing

Software Engineer

Etermax

May 2022 - Sept 2023

Argentina

  • Developed product dashboard features for game analytics and performance tracking.
  • Contributed to Unity 2020 migration ensuring stable production transition.
  • Integrated backend services with AWS infrastructure and containerized deployments.
  • Collaborated with cross-functional teams to ship live game updates for games with +100k DAU.

Tech stack: C#, Unity, REST, Kotlin, DynamoDB, Kubernetes, AWS, React, HTML, CSS, Reactive Programming, TDD

Backend Developer

Axioma IT

June 2021 - April 2022

Argentina

  • Refactored and optimized REST APIs, improving performance by 100%.
  • Improved SQL query efficiency and database performance.
  • Stabilized backend services for enterprise clients.

Tech stack: C#, .NET Framework 4.5, .NET 5, REST, SQL Server, Azure

Full Stack Developer

NextCommerce

Oct 2019 - June 2021

Argentina

  • Integrated multiple payment gateways into ecommerce platforms.
  • Developed backend modules for transaction and order processing.
  • Authored API documentation improving onboarding efficiency for new developers.

Tech stack: C#, ASP.NET MVC, .NET 5, SQL Server, Angular, Jquery, HTML/CSS

Skills

Backend

C#, .NET Core, .NET Framework, .NET 5, .NET 7, .NET 8, RESTful APIs, SQL Server, PostgreSQL, Redis, Docker, Kubernetes

Blockchain

Smart Contract Development, Soroban, Stellar, Cairo, Solidity, Account Abstraction, On-chain Architecture

Frontend

React, Next.js, Angular

Cloud & Infrastructure

AWS, Firebase, OpenShift, Azure

Education

Quark Academy

Course, Software Engineering

June 2021 - February 2022

Remote

Technical High School "Jose Hernandez"

Technical Degree, Software Engineering

Dec 2019

Avellaneda, Buenos Aires, Argentina

Languages

Spanish

Native

English

Upper-intermediate

Renzo Banegas
Renzo Banegas
Senior Fullstack Engineer
Avellaneda, Argentina (UTC-3)