Senior .NET Developer (with AWS)

*This position is fully remote only for employment in Bulgaria. However, people can also work in one of our offices in Sofia or Varna if they prefer to.

About DataArt

DataArt is a global software engineering firm and a trusted technology partner for market leaders and visionaries. Our world-class team designs and engineers data-driven, cloud-native solutions to deliver immediate and enduring business value.

We promote a culture of radical respect, prioritizing your personal well-being as much as your expertise. We stand firmly against prejudice and inequality, valuing each of our employees equally.

We respect the autonomy of others before all else, offering remote, onsite, and hybrid work options. Our Learning and development centers, R&D labs, and mentorship programs encourage professional growth.

Our long-term approach to collaboration with clients and colleagues alike focuses on building partnerships that extend beyond one-off projects. We provide the ability to switch between projects and technology stacks, creating opportunities for exploration through our learning and networking systems to advance your career.

Position Overview

Our client is a UK-based company specializing in personalized greeting cards, flowers, and gifts. Positioned as a tech-forward leader in their domain, they actively invest in innovative solutions and diverse technologies to deliver exceptional digital experiences to their customers.

With growing demand for virtual celebrations and remote interactions, the project focuses on scaling and enhancing the platform’s capabilities. Teams are being built in two models: augmentation of existing teams and creation of dedicated new ones. We are currently hiring for several .NET stack positions across multiple product teams.

You will be part of a delivery-oriented team working on high-volume transactional systems with strong emphasis on scalability, performance, and cloud-based architecture. Candidates will join teams responsible for Stripe integrations, serverless APIs, and platform optimizations.

We’re looking for engineers who are comfortable with backend development, open to frontend/tooling tasks, and can collaborate in an agile and feedback-driven environment.

Responsibilities

• Develop and maintain .NET Core backend and RESTful APIs
• Integrate Stripe payments and manage AWS serverless services
• Implement infrastructure-as-code and work with SQL/NoSQL databases
• Maintain CI/CD pipelines and apply TDD practices
• Collaborate in agile teams and translate business needs into scalable solutions

Requirements

• Strong experience in .NET Core / ASP.NET Web API
• Solid knowledge of object-oriented programming, software design patterns, and RESTful API development
• Experience with Stripe integrations, including subscriptions and billing
• Hands-on experience with AWS services (Lambda, SQS, SNS) and serverless architecture
• Familiarity with infrastructure-as-code (CloudFormation or Terraform)
• Experience with MS SQL Server and/or NoSQL (DynamoDB preferred)
• Comfortable with CI/CD pipelines (GitHub Actions preferred)
• TDD and unit testing mindset
• English: Upper-Intermediate or higher

Nice To Have

• Experience with microservices architecture
• Frontend familiarity (React, TypeScript, HTML/JavaScript)
• Experience in logistics, e-commerce, or high-load systems
• Understanding of system design, performance, and resilience
• Strong collaboration skills: pair programming, agile mindset
• Operational thinking: ability to translate business needs into scalable technical solutions

What We Offer

• Unique corporate culture – no micromanagement, friendly atmosphere, freedom, and mutual respect
• Flexible schedule – ability to change projects, to work from home, and to try yourself in different roles
• Professional Development Map – a comprehensive map of your professional development within DataArt
• We hire people not for a project, but for the company. If the project (or your work in it) is over, you go to another project or to a paid “Idle”.
• Social benefits – additional health insurance, life insurance, sports card, etc.
• Opportunity to work from another DataArt office in a different city or country (temporarily or permanently)
• Free English courses
• Cozy office with a great atmosphere
• Snacks, drinks, and fruits are always available

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