Senior Full Stack Engineer .NET / React (479)

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

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

RWA & Tokenization Protocol Engineer

Full time
Remote
Sirex Portfolio Companies
Salary: $155,000 – $220,000 USD base + equity + token package
Location: Remote-first
About the role
Build real-world asset tokenization protocols and compliant on-chain infrastructure for our RWA portfolio companies (real estate, carbon credits, invoices, treasuries).
What you’ll do
•Design and audit upgradeable smart contracts for RWA issuance, custody and compliance
•Implement cross-chain bridging, oracle integration and KYC/AML hooks
•Build tokenization SDKs and developer tools
•Work on regulatory-compliant mechanisms (ERC-3643, ERC-1400 style)
•Ship production protocols on Ethereum, Polygon, Arbitrum and Solana
Requirements
•4+ years Solidity + security experience (OpenZeppelin, audits)
•Deep knowledge of token standards and RWA primitives
•Experience with legal/compliance wrappers — strong plus
•Rust or Move experience is a bonus
What we offer
•Work on protocols that bring trillions in real-world value on-chain
•Direct collaboration with legal and regulatory partners
•High upside through protocol ownership and tokens
Payment in Crypto
12,917-18,333
Monthly
See details

Senior Rust Engineer — Decentralized AI Compute & GPU Orchestration

Full time
Remote
Senior Rust Engineer — Decentralized AI Compute & GPU Orchestration
Sirex Portfolio Companies
Salary: $170,000 – $240,000 USD base + meaningful equity + token package
Location: Remote-first (any timezone)
About the role
We’re building the next layer of decentralized compute for AI agents — GPU orchestration, libp2p networking, verifiable execution and on-chain coordination. Join one of our high-conviction portfolio companies or work directly with the Sirex infra team.
What you’ll do
•Design and ship production Rust services for distributed GPU clusters and agent orchestration
•Build libp2p + IPFS-based peer discovery and data exchange layers
•Implement verifiable compute primitives (zkML, TEE, or on-chain proofs)
•Optimize for cost, latency and fault tolerance at scale
•Collaborate with AI teams on autonomous agent deployment
Requirements
•4+ years Rust (production experience mandatory)
•Strong background in distributed systems, networking or blockchain infra
•Experience with libp2p, IPFS, GPU compute (CUDA/ROCm) or TEEs — big plus
•Deep understanding of AI agent workloads
What we offer
•Direct impact on core infrastructure that powers multiple portfolio companies
•Top-tier equity + token upside
•Fast growth to Staff/Principal level
•Work with the best AI + crypto teams in the space
Payment in Crypto
14,167-20,000
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

Junior/Mid Decentralized Infrastructure Engineer

Full time
Remote
Role:
Help build and scale decentralized infrastructure: contribute to compute networks, protocols, storage layers, and orchestration tools that power AI agents and open digital systems. You’ll write code, run tests, fix bugs, and ship real features fast.
Skills & Requirements: 
1–3 years in blockchain infra, distributed systems, or high-scale compute (or strong personal projects) 
Solid Python / Rust / Go skills 
Interest in libp2p, IPFS, GPU orchestration, or decentralized compute 
Quick learner who ships clean code and loves performance/cost challenges
Salary:
$110,000 – $165,000 USD base + meaningful equity (portfolio startup) + full benefits + Sirex carry
Description:
Sirex.vc doesn’t just invest — we plug strong builders straight into our portfolio companies.
This is your chance to work on the real infrastructure behind autonomous agents and the open digital economy. Full support from the Sirex team, fast growth, zero bureaucracy.
High risk. Zero apologies.
Payment in Crypto
9,167-13,750
Monthly
See details