Senior Full Stack Engineer .NET / React (479)

Status
Full time
Remote
Compensation is not specified
Role
Full-Stack Engineer
Description

Ready to advance your career internationally with our assistance?

We are Ubiminds, a people-first company that collaborates with American software product companies to expand their global teams. We specialize in sourcing top talent in LATAM and offering employer-of-record support for professionals seeking impactful, long-term opportunities.

In this position, you will join a highly reputable US-based company focusing on digital interviewing and talent assessment solutions used worldwide.

Key Responsibilities

  • Develop new features and maintain existing components spanning front-end and back-end systems.
  • Utilize React for front-end and .NET / C# for back-end development.
  • Design and optimize MS SQL databases for enhanced performance and reliability.
  • Engage in architectural discussions and contribute to system design decisions.
  • Write clean, maintainable, and testable code.
  • Collaborate closely with cross-functional teams, including product and engineering stakeholders.
  • Assist in enhancing engineering standards and development workflows.

Requirements

  • Extensive experience with .NET (C#) in live environments.
  • Proficiency in building modern front-end applications using React.
  • Familiarity with MS SQL or similar relational databases.
  • Senior-level mindset with a strong sense of ownership and accountability.
  • Prior experience working with mature production systems.
  • Ability to adapt to evolving technical requirements with ease.
  • Excellent English communication skills, both written and verbal.
  • Background in collaborating within distributed teams.

Preferred Skills

  • Experience with microservices architectures.
  • Knowledge of AWS cloud environments.
  • Exposure to test automation practices.
  • Familiarity with AWS AI-related services as a bonus.

Team and Working Environment

  • Join a team focused on Assessment engineering.
  • Work in a collaborative setting with technical leadership and senior engineers.
  • Prioritize product evolution and maintainability.

About Ubiminds

Our Culture

  • Prioritizing "People First" in everything we do.
  • Encouraging continuous self-improvement and embracing challenges.
  • Promoting a sense of teamwork and unity.
  • Embracing a commitment to excellence in service delivery.
  • Committing to honesty, transparency, and openness.

Perks and Benefits

As a Full Stack Engineer - NET / React at Ubiminds, you will enjoy:

  • Being integrated into a product-based company, receiving the same treatment as full-time employees.
  • Access to full back-office support, including career guidance and HR services.
  • A remote-first policy for work flexibility.
  • Provision of a MacBook for work.
  • Growth opportunities via tech talks, chapter meetings, and remote social events.
  • Free English lessons with a native speaker to enhance communication skills.
  • Referral bonuses for recommending tech professionals to Ubiminds.
  • Optional office access at the Florianópolis headquarters, featuring weekly massages, snacks, drinks, and games.

Hiring Process

  1. Initiate contact with Tech Recruiter for a preliminary discussion.
  2. Proceed with a Technical Assessment.
  3. Attend a client Interview.
  4. Receive the Offer.

Our recruitment process may involve some AI tools for selected tasks, but all final hiring decisions are made by our human team. Reach out for further details on data processing.

Skills Required
Avatar
Ubiminds
Website
Not specified
Company size
Not specified
Location
United States
Description
Not specified
Status

More Full-time Jobs

Show more

Recruiter, Marketer, Advertiser, Business Developer

Part time
Remote
We are building a company and looking for people who want to grow with it
Open roles
- Marketer
- Business Developer
- Recruiter
- Advertiser
Requirements
- Clear natural English communication without translators or AI
- Professional fast and reliable
- Fluent in your native language
If you want to be part of something early and actually make an impact — reach out
Payment in Crypto
500-1,000
Monthly
See details

Junior / Middle Metaverse Developer (Unity / Web3 / VR)

Manzhouli, China
Manzhouli, China
Full time
Remote
We are looking for a Metaverse Developer to help build interactive virtual environments and immersive digital experiences. The role involves developing 3D worlds, integrating Web3 technologies, and working with modern tools for real-time applications.
You will work with Unity, WebGL, and blockchain technologies to create engaging metaverse features and optimize them for performance across different devices. The developer will collaborate with designers and backend engineers to deliver scalable and stable products.
Requirements include experience with Unity and C#, understanding of 3D development, Web3 or blockchain basics, and familiarity with Git and API integration. Experience with VR/AR, NFTs, or multiplayer systems is a plus.
We offer remote work, flexible hours, crypto payments, and the opportunity to build innovative metaverse products.
Payment in Crypto
1,500-3,500
Monthly
See details

Web3 Fullstack Developer

Part time
Remote
🌐 About Us
Neonflick is a tech organization specializing in Web3 development.
We believe Web3 solutions are not as popular as they could be — mainly due to complexity. Our mission is to simplify the user experience and make decentralized technology more accessible and easy to use for everyone.
🚀 About the Role
We are looking for a Web3 Fullstack Developer who is passionate about decentralized technologies and excited to contribute to building meaningful Web3 products. You will work on developing new products, improving existing ones, and fixing bugs, all while proposing innovative ideas to enhance our platform.
🔹 Responsibilities
Develop functional and user-friendly Web3 products
Improve and optimize existing products and features
Identify and fix bugs or issues in the system
Propose and implement new ideas for product development
Collaborate with the team to ensure high-quality software delivery
🔹 Requirements
Strong interest in Web3 / blockchain / decentralized technologies
Fullstack development experience (frontend + backend)
Experience with smart contracts and decentralized frameworks is a plus
Problem-solving skills and attention to detail
Ability to work independently and proactively
🔹 What You Get
Early-stage involvement in a Web3 tech organization
Influence over product development and feature design
Opportunity to build experience and a portfolio in the Web3 space
Potential long-term collaboration and future compensation as the project grows
A chance to contribute to making Web3 simpler and more accessible
⚠️ Important
This is an unpaid position. We are looking for someone motivated by vision, learning, and long-term impact rather than immediate salary.
If you are passionate about Web3 and building meaningful decentralized products, we’d love to hear from you.

Senior Blockchain Developer - Ethereum/PulseChain - GAM3S.GG

Lisbon, Portugal
Lisbon, Portugal
Full time
Remote
About the Job
We're looking for a Senior Blockchain Developer with strong Ethereum/PulseChain smart contract experience to work on our DeFi/GameFi platform. You'll be building and maintaining betting contracts, yield farming mechanisms, token swap systems, and Web3 frontend integrations for our decentralized application on PulseChain.
Key Responsibilities
Smart Contract Development
System Architecture & Integration
Frontend Web3 Integration
Security & Compliance
Performance & Monitoring
Required Technical Skills
Blockchain Expertise
Frontend Web3 Development
Development Tools
Integration & Tools
Payment in Crypto
10,417
Monthly
See details

Looking for a blockchain developer

Whiteman Air Force Base, USA
Whiteman Air Force Base, USA
Full time
Remote
We are looking for a skilled Full-Stack Blockchain Developer to help maintain, improve, and extend the RaiseHive platform. This role involves working across the frontend, backend, and smart contract layers to ensure a stable, secure, and scalable Web3 application.
The ideal candidate has hands-on experience with React, Node.js, Ethereum smart contracts, and real-world Web3 integrations.
Framework: React 18.2 (Vite 3)
Styling: Tailwind CSS 3.4, NextUI
Animations: Framer Motion
Web3: Thirdweb SDK v4, Ethers.js v5
Routing: React Router DOM v6
State Management: React Context API
Libraries: React Markdown, React Image Gallery, Replyke (comments), React Toastify
Runtime: Node.js
Framework: Express.js
Database: MongoDB Atlas (Mongoose ODM)
Email: Nodemailer
Scheduling: Node-cron
Logging: Pino
Network: Ethereum
Smart Contracts: Solidity ^0.8.19
Development Tools: Hardhat
Libraries: OpenZeppelin, Thirdweb Contracts
Wallet Integration: MetaMask
Frontend
Strong proficiency in React (hooks, context, routing)
Experience with Vite or modern build tools
Solid knowledge of Tailwind CSS and responsive design
Experience using component libraries (NextUI, Material UI, etc.)
Backend
Strong experience with Node.js and Express
Proficiency with MongoDB and Mongoose
REST API design and implementation
Environment configuration and deployment awareness
Blockchain & Web3
Hands-on Ethereum development experience
Solidity smart contract development
Experience with Ethers.js / Thirdweb SDK
Understanding of smart contract security and gas optimization
MetaMask wallet integration and transaction handling
General
JavaScript (ES6+)
Git version control
Async programming and debugging skills
Strong problem-solving ability
Payment in Crypto
125
Monthly
See details