Senior Full-stack .NET Developer

Are you a talented Senior Developer looking for a remote job that lets you show your skills and get decent compensation? Look no further than Lemon.io — the marketplace that connects you with hand-picked startups in the US and Europe.

Currently, we are seeking a Senior Full-Stack Developer for our client. It’s a direct hire position, but there is a paid trial period of 3–6 months before signing the contract directly with the client.

You should have a strong background in .NET and modern Front-end frameworks (Vue.js or React.js). The ideal candidate will bring both breadth and depth of experience, with the flexibility to balance 50/50 Front-end and Back-end responsibilities, while maintaining a slight Back-end focus.

Location / Time Zone: LATAM, Canada, or US time zones.

Education: Bachelor’s degree in Computer Science, Software Engineering, or a related field.

We are looking for a candidate who is not just technically strong but also thrives in a mission-driven, collaborative environment:

• Proactive developer with a focus on long-term, stable collaboration.
• Strong team player, able to adapt to dynamic processes and evolving environments.
• Problem-solving mindset with attention to detail and commitment to high-quality delivery.
• Excellent communication skills, with the ability to clearly articulate technical concepts.
• Human-centered approach to technology, passionate about the positive impact on people’s health.

Requirements:

• 6+ years of commercial experience in software development.

• At least 3 years of commercial experience in front-end development.

• 4.5+ years of experience with .NET and ASP.NET Core, ideally combined with additional back-end technologies.

• 3+ years of experience with Vue.js or React.js.

• Proficiency in JavaScript and TypeScript is required.

• Architecture: Familiarity with Cloud Architecture and scalable system design.

• Expertise with Cypress, Playwright, Mocha, NUnit, and Puppeteer.js is a huge benefit.

• Strong technical skills: as a Senior Developer, you are expected to be able to create projects from scratch and have a deep understanding of application architecture.

• Clear and effective communication in English — advanced ability to discuss business tasks, justify decisions, and communicate issues. Strong self-presentation skills are also essential for upcoming client calls.

• Strong self-organizational skills — ability to work full-time remotely without supervision.

• Reliability — we want to trust you and expect that you won’t let us or the client down.

• Adaptability and flexibility — the ability to onboard the project quickly after accepting it and start delivering results promptly.

Does this sound like a good fit for you? Apply now and join our client’s team! The project is focused on healthcare and has the potential to make a significant impact on people’s lives.

Other Options from Lemon.io

NOT YOUR TECH STACK?

We have different projects for Senior Developers, so if you have 4+ years of commercial experience in software development and you are fluent with React & Node.js, React & Python, AI Engineering, Data Engineering, Python & LLM, Blockchain, Game Development, Svelte & TypeScript, Svelte & Node, Svelte & Python, or Shopify & JavaScript we would be happy to communicate and provide you with a project that matches your experience. Just apply, and we will share more details with you.

If your experience matches our requirements, be ready for the next steps:

• VideoAsk — watch a short video about our startup, up to 10 minutes
• Complete your profile on our website
• 30-minute screening call
• Technical interview
• Feedback
• Magic Box (we are looking for the best project for you).

P.S. We work with developers from 50+ countries in different regions: Europe, LATAM, Asia (Philippines, Indonesia), Oceania (Australia, New Zealand, Papua New Guinea), Canada, and the UK. However, we have some exceptions.

At the moment, we don’t have a legal basis to accept applicants from the following countries:

• European: Iceland, Liechtenstein, Kosovo, Belarus, Russia, and Serbia.
• Latin America: Cuba and Nicaragua
• Most Asian countries and Africa.

We expand and shorten the list of exemptions regularly.

Do you represent a company with engineers who match the description and want to collaborate with us through staff augmentation? Then register here.