engineering

Senior .NET Core Backend Engineer

Remote / Full time

Description

At Spellty, we are building cutting-edge communication solutions, and we need top-tier engineers to drive our backend development. As a Senior .NET Core Backend Engineer, you will play a key role in designing, developing, and optimizing scalable, high-performance backend services. You’ll work with a modern tech stack to power real-time messaging and automation solutions, ensuring reliability, security, and efficiency.

What You’ll Do at Spellty

  • Design, develop, and maintain scalable, high-performance APIs and microservices using .NET Core.
  • Optimize database performance and ensure efficient data processing in SQL Server.
  • Implement and manage cloud-based architectures in Azure to enhance scalability and reliability.
  • Collaborate with frontend developers, DevOps, and product teams to deliver seamless integrations.
  • Ensure best security practices, high availability, and fault tolerance in backend services.
  • Drive code quality and engineering best practices, including unit testing, CI/CD, and clean architecture principles.

Who We’re Looking For

  • 5+ years of experience in backend development, with strong expertise in .NET Core and C#.
  • Experience in RESTful API development, microservices architecture, and event-driven systems.
  • Strong knowledge of SQL Server, PostgreSQL, or other relational databases.
  • Familiarity with Azure cloud services, including containers (Docker, Kubernetes) and serverless computing.
  • Experience with Redis, RabbitMQ, or other message brokers is a plus.
  • Understanding of CQRS, Domain-Driven Design (DDD), and SOLID principles.
  • A proactive mindset, problem-solving skills, and the ability to work in a fast-paced, high-growth environment.

Benefits with You in Mind

✨ Competitive salary + performance-based bonuses.
🏡 Remote-first culture with flexible working hours.
🚀 Opportunity to work on high-impact, scalable projects in the communication tech space.
📚 Access to training programs, certifications, and career development opportunities.
💡 Work with cutting-edge technologies and modern architectures in a collaborative, innovation-driven team.

Flexible time off

We believe in work-life balance. Enjoy flexible time off to recharge, travel, or focus on what matters most to you.

Healthcare

Your well-being comes first. We offer comprehensive healthcare plans to keep you and your family covered.

The latest hardware

Get access to cutting-edge technology and the latest devices to help you work efficiently and stay ahead.

Ergonomic equipment

Work comfortably with top-tier ergonomic chairs, standing desks, and accessories designed for productivity and wellness.

What is our hiring process like?

At Spellty, we believe in a fast, efficient, and data-driven hiring process to find the best talent. Here’s how it works:

  1. Apply & Submit Your CV – Share your resume and tell us about your experience.
  2. AI-Powered Pre-Selection – Our AI will identify candidates whose skills and experience best match the role.
  3. Recruiter Review – A recruiter will carefully evaluate your profile.
  4. Skill Assessment – If your profile aligns, you’ll receive an assessment to showcase your expertise.
  5. Team Manager Interview – A conversation with the hiring manager to discuss your fit for the team.
  6. Psychology Interview – An evaluation to understand your mindset, soft skills, and cultural alignment.
  7. CEO Interview – A final discussion with our CEO to align on vision and expectations.
  8. Offer & Onboarding – If selected, we’ll formalize your contract and set your start date!
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