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Backend Developer Intern

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Posted:3 days ago| Platform: Linkedin logo

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Job Type

Internship

Job Description

Sanctity AI is a Netherlands-based startup founded by an IIT alum. We’re a small but sharp team, building AI tools that are not just smart, but safe and genuinely useful to humans. 


We’re not in the business of throwing fancy UIs on top of someone else’s API. We’re diving deep, and developing our own algorithms, designing for alignment, and shaping how AI agents should behave in the real world. It’s not easy, but that’s what makes it worth it. 


We’re building in a space where a lot of people talk ethics, but very few ship products that actually embody it. Our work sits at the core of some of the most exciting and important challenges in AI right now: LLM training, prompt orchestration, agent infrastructure, and responsible deployment. If you’re interested in building things that genuinely move the field forward, you’re going to like it here.


What You’ll Be Doing


As our Backend Developer, you’ll join a tight-knit engineering team that’s obsessed with doing great work. You won’t just be supporting - you’ll be contributing directly to our stack, building tools that power intelligent systems and human-AI collaboration.


The Skills We’re Looking For


We care a lot about quality and clarity, so here’s what we’re after. Don’t worry if you don’t tick every single box—if you’re a quick learner and love solving real problems, we want to hear from you.


  1. Backend Development:

     Solid knowledge of Node.js, with hands-on experience in Express.js and NestJS. You’ve built secure, scalable backend services before or you’re excited to learn how.
  2. TypeScript Proficiency:

     You’re confident writing in TypeScript, and you understand why type safety matters for fast-moving teams.
  3. API Design:

     You know your way around RESTful APIs - how to design, document, and test them properly.
  4. Database Management:

     You’ve worked with PostgreSQL and can design schemas, write solid queries, and keep things fast and reliable.
  5. Version Control:

     Git isn’t just a tool, it’s part of how you work and collaborate.
  6. Cloud & Deployment:

    You’ve deployed apps before, ideally with AWS (or you’re ready to pick it up quickly).
  7. Frontend Skills:

    You’re comfortable with React, Next.js, and Tailwind CSS, and can jump in when needed to make things click on the UI.
  8.  You write clean, modular, maintainable code that future-you (and your teammates) will thank you for.
  9. Testing:

     You understand the value of backend tests, and how to use them to catch bugs before users do.


Bonus Points For


If you’ve got these in your toolkit, even better:

  1. Containerization:

     Experience with Docker to make development and deployment smoother across environments.
  2. CI/CD Know-how:

     Familiarity with pipelines and automated deployments - you know how to go from commit to live with confidence.
  3. Redis Expertise:

     Experience with Redis to implement efficient in-memory caching and real-time data management solutions
  4. Frontend Skills:

     You’re comfortable with React, Next.js, and Tailwind CSS, and can jump in when needed to make things click on the UI.


Why This Internship Rocks


You won’t be sitting on the sidelines. You’ll be deep in the code, solving real problems, and building features that matter.


At Sanctity, we care about quality, speed, and doing the right thing - even when it’s harder. You’ll work with people who take their craft seriously, but not themselves. We move fast, we build with intention, and we’re always thinking a few steps ahead.


If you’re excited by LLMs, backend systems, and the idea of shaping AI from the inside out, you’re in the right place. And if you’re looking for a startup where you can grow fast, ship boldly, and have actual ownership - we hope you apply.


Apply Now


We’re building something ambitious, responsible, and just a little bit rebellious. Come be a part of it.


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