Senior Full Stack Software Engineer - .NET/React (539)

Full time
Remote
Compensation is not specified
Role
Software Engineer
Description

Are you looking to advance your international career with a forward-thinking company?

Join Ubiminds, a reputable GPTW-certified firm that collaborates with American software product companies to expand their development teams. Specializing in sourcing the top 5% of Brazilian talent, Ubiminds provides personalized services to support their clients' LATAM initiatives through staff enhancement and employer-of-record solutions.

Ubiminds is currently partnered with a company at the forefront of revolutionizing talent acquisition practices for organizations. Their all-encompassing hiring platform seamlessly connects companies and candidates through cutting-edge features like video interviews, interactive assessments, and AI-fueled conversational tools. With a strong emphasis on ethical AI application, this industry leader has facilitated millions of video interviews and engagements for over 1,200 global clients.

This is an exciting chance for you to propel your international career while working in an innovative environment.

Responsibilities

  • Develop and enhance critical codebase, focusing on backend systems implemented in .NET and frontend components using React and TypeScript.
  • Collaborate closely with engineering teams and cross-functional groups to address issues, enhance system reliability, and implement incremental updates, with growth opportunities into more feature-centric tasks.

Key Responsibilities

  • Design, develop, and manage robust .NET Core services and APIs in a microservices architecture.
  • Create responsive, user-friendly frontend experiences utilizing React and TypeScript.
  • Produce clean, scalable, and testable code following current engineering standards.
  • Support automated testing to ensure high-quality releases.
  • Engage in design reviews, code reviews, and technical planning.
  • Contribute to reducing technical debt across the platform.

Requirements

Mandatory Skills:

  • Extensive 7+ years of experience in .NET Core / C# for web applications.
  • Proficiency in REST APIs and microservices design.
  • Knowledge of cloud platforms such as Azure, AWS, or GCP.
  • Strong skills in JavaScript, HTML, CSS, and frameworks like React.
  • Experience with relational databases and ORMs like Entity Framework Core.
  • Familiarity with Git workflows and version control best practices.
  • Basic English proficiency for documentation and collaboration within remote teams.

Nice to Have:

  • Experience with high-scale enterprise platforms.
  • Familiarity with test automation tools.
  • Knowledge of Docker, Kubernetes, or container orchestration.
  • Exposure to modernizing legacy systems.
  • Understanding of secure coding practices.

Benefits

As a Senior Full Stack Software Engineer at Ubiminds, you can expect:

  • Integration into a product-based environment with comprehensive support services.
  • A remote-first policy, promoting a balanced work environment.
  • Provided equipment, including a Macbook for work.
  • Networking opportunities with tech professionals through events and activities.
  • English language improvement sessions with a native speaker.
  • Candidate Referral bonus and other incentive programs.
  • Access to in-person headquarters amenities for those interested in an office environment.

Recruitment Process

  • Initial interview with a Tech Recruiter.
  • Client evaluation process, including technical assessments.
  • Employment offer.

Note: Ubiminds may use AI tools to streamline recruitment processes, but all final decisions are based on human judgment. For more details on data processing, feel free to reach out to us.

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

More Full-time Jobs

Show more

Chief Technology Officer (CTO) / Senior Full-Stack Developer (Web3)

London, UK
London, UK
Full time
Remote
About the Role
We are building a next-generation Web3 social platform designed to redefine how digital communities connect, collaborate, and grow.
Backed by years of experience within the cryptocurrency, blockchain, and digital asset ecosystem, our team has developed deep insights into how founders, developers, investors, creators, and communities interact. This understanding inspired us to create a platform that goes beyond financial applications and focuses on empowering meaningful social engagement.
Our mission is to build a transparent, community-driven social network where users can share ideas, collaborate on projects, discover opportunities, and create lasting relationships. We believe the next evolution of social media will be powered by decentralized technologies while maintaining an exceptional user experience, simplicity, and long-term sustainability.
We are seeking an experienced Chief Technology Officer (CTO) or Senior Full-Stack Developer who is passionate about Web3 and capable of leading the technical vision, architecture, and execution of our platform from the ground up.
Responsibilities
Lead the technical strategy and product architecture.
Design and build scalable backend systems and modern frontend applications.
Develop high-performance APIs and real-time features.
Integrate blockchain technologies, wallets, and Web3 authentication where appropriate.
Build secure, reliable, and maintainable infrastructure.
Collaborate closely with product, design, and leadership teams.
Establish engineering best practices, code quality standards, and development workflows.
Mentor engineers and help grow the technical organization.
Evaluate emerging technologies and implement solutions that improve scalability, security, and user experience.
Requirements
5+ years of professional software development experience.
Strong experience with modern JavaScript/TypeScript ecosystems.
Experience with React, Next.js, Node.js, or similar technologies.
Solid understanding of system architecture, cloud infrastructure, databases, and API design.
Experience building scalable consumer-facing products.
Familiarity with blockchain technologies, Web3 infrastructure, wallets, smart contracts, or decentralized applications.
Strong knowledge of security best practices and application performance optimization.
Excellent problem-solving and communication skills.
Ability to work independently in a fast-paced startup environment.
Preferred Qualifications
Experience building Web3 or crypto products.
Understanding of decentralized identity, token ecosystems, or on-chain social applications.
Experience leading engineering teams or serving in a technical leadership role.
Background in DevOps, CI/CD, Docker, Kubernetes, or cloud platforms such as AWS or GCP.
Experience with real-time messaging, social platforms, or community products.
What We Offer
Competitive full-time compensation.
Opportunity to build a product from an early stage with significant technical ownership.
Flexible and remote-friendly work environment.
Collaborative team focused on innovation and long-term impact.
Work on cutting-edge Web3 technologies and help shape the future of digital communities.
Opportunity for career growth and leadership as the platform scales.
If you are excited about building the next generation of Web3 social experiences and want to make a meaningful impact from the earliest stages, we'd love to hear from you.
Payment in Crypto
7,500-11,000
Monthly
See details

Backend Engineer with hands-on blockchain experience

Full time
Remote
We are building a modern hotel booking platform enhanced with Web3 capabilities, includingtoken-based payments, on-chain verification, and decentralized identity/ownership features.We’re looking for a Backend Engineer to design and build scalable backend systems andintegrate them with blockchain infrastructure. You’ll work closely with frontend and Web3engineers to deliver a seamless and reliable platform. 
Payment in Crypto
13,000-17,000
Monthly
See details

Senior Blockchain Engineer (Cosmos SDK & IBC)

Hong Kong
Hong Kong
Full time
Remote
Merklio is expanding its cross-chain orchestration layer. We are building a sovereign app-chain (Rollup-style) that aggregates liquidity from multiple L1s via IBC. We need a Blockchain Engineer to design, implement, and maintain our Cosmos-based chain.
Expectations:
Design custom modules (x/staking, x/rewards, x/merkl)
Implement IBC light clients and relayers
Optimize block time and state pruning
Write comprehensive unit & integration tests (Go test)
Build CLI tools for validators and delegators
Monitor node health and network upgrades
Collaborate with the research team on MEV-resistant ordering
Maintain chain upgrades (v1 → v2) with migration scripts
Write technical documentation for external validators
Nice to have:
Experience with Avalanche Subnets or Polkadot Substrate
Knowledge of HSM and key management
Open-source contributions to Cosmos SDK or related repos
Chinese+English language proficiency
Payment in Crypto
7,000-10,000
Monthly
See details

Senior Mobile application developer

Full time
Remote
I am looking for a developer who has much experience in Mobile application development.
But specially, candidate should be native in English.
Team communication is very important.
Please bid US only
Thank you
Payment in Crypto
300-1,000
Monthly
See details

Web Developer

New York City, USA
New York City, USA
Full time
Remote
Hi,
I need a custom ebay like site for bitcoins or using stock credit on it. I need it to let you pay the user verbally, like an agreement you agree on that's it. I need the site fixed so it can be upgraded in the future.
I need it to be fixed so you can upload something to the site and sell it.
All I ask is keep the buying and selling part verbal agreements only. Like sending the user stock credit virtually.
Bid on things on the website 
Sell things on the website
Buy things on the website
All I ask is keep the programming simple and the website in a simple form.
I need a website for the web browser and one for the phone web browsers.
If you can put in a custom user admin for it also, then that will be great.
Thank you,
Chris Clark (666 Encryption, CEO)
 
Payment in Crypto
10,000-100,000
Monthly
See details