Senior Python Developer

*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 non-profit organization whose mission is to protect natural species and the environments essential to their survival through scientific research, habitat restoration, public advocacy, and nationwide community engagement initiatives.

We are looking for a Senior Python Developer to join our newly formed dynamic team. The ideal candidate will be responsible for developing and maintaining high-performance, scalable API-driven backend services.

The primary focus will be on designing and implementing server-side logic, building robust RESTful APIs, ensuring optimal performance, and collaborating with cross-functional teams to deliver high-quality software solutions.

Resoponsibilities

• Design, build, and maintain RESTful APIs and backend services using Python and FastAPI
• Implement clean, reliable, and scalable server-side logic and application architecture
• Integrate with PostgreSQL and other data stores using SQLAlchemy; write efficient SQL queries
• Create and maintain database schemas, migrations, and performance-optimized queries
• Containerize and deploy applications using Docker and AWS services (Fargate/ECS, EC2, Lambda)
• Utilize AWS services such as ELB/ALB, CloudFront, CloudWatch, S3, and Aurora PostgreSQL for scalable and resilient backend infrastructure
• Implement authentication, authorization, and security best practices (JWT/OAuth2, secrets management)
• Monitor and optimize application performance, perform troubleshooting and debugging
• Collaborate with frontend, DevOps, and product teams to define API requirements and deliver new features

Requirements

• Proven experience as a Python Developer focused on backend/API development
• Strong proficiency with FastAPI, REST API architecture, and asynchronous programming patterns
• Experience working with PostgreSQL, strong SQL skills, and ORM frameworks (SQLAlchemy)
• Solid understanding of containerization (Docker) and deploying production applications
• Hands-on experience with AWS services, preferably including Fargate/ECS, EC2, Lambda, CloudFront, CloudWatch, and Aurora PostgreSQL
• Familiarity with database migrations (Alembic or Liquibase)
• Understanding of CI/CD pipelines (GitHub Actions), logging, and monitoring practices
• Knowledge of infrastructure-as-code principles (CloudFormation is a plus, but not required)
• Strong problem-solving skills and the ability to work collaboratively in a team environment
• Ability to communicate complex technical concepts clearly to non-technical stakeholders
• Good spoken English
• Experience in leading teams would be considered a plus

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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