About Sirma 
Established in 1992, Sirma is one of the leading IT companies in Bulgaria. Since 2015, the company has been listed on the Bulgarian Stock Exchange.
Sirma specializes in software development across multiple industries, including finance, insurance, healthcare, transportation, logistics, hospitality, retail, and e-government. With a team of more than 800 professionals, the company delivers cutting-edge software solutions tailored to address the specific business needs and challenges of our clients. Our projects range from short engagements to multi-year collaborations on turnkey products.
As we believe that our employees are our greatest asset, we provide them with a collaborative environment and full support for their career and personal growth.

About the role
We are seeking a highly skilled and experienced Senior Python Developer to join our dynamic team. As a Backend Developer, you will support the development of core backend functionality in Python, with a strong focus on integration with AWS services. You’ll be working closely with the rest of the team to build robust, scalable, and intelligent backend solutions that power the AI/ML features of the application.

Your responsibilities
• Develop and maintain backend services using Python (e.g., FastAPI, Flask)
• Integrate and orchestrate AWS Serverless components such as Lambda, API Gateway, Step Functions, S3, DynamoDB, etc.
• Collaborate with ML engineers and frontend developers to deliver AI-driven features (e.g., report generation, chat-based knowledge retrieval)
• Contribute to the evolution of the architecture with a focus on scalability, maintainability, and performance
• Participate in code reviews and team ceremonies as part of a highly collaborative development team

Role's requirements
• 5+ years of experience in Python backend development
• In-depth knowledge of AWS, especially serverless architecture (Lambda, API Gateway, S3, DynamoDB, etc.)
• Experience with designing and integrating RESTful APIs
• Familiarity with CI/CD pipelines and DevOps practices in cloud environments
• Solid understanding of cloud-native application patterns
• Bachelor's degree in Computer Science or a related degree
• Excellent spoken and written English

Advantages
• Experience with Infrastructure as Code, particularly Terraform
• Exposure to AWS ML services like SageMaker or Bedrock
• Previous work on AI/ML-driven applications or feature

What we offer
• Personal career path
• Individual or team professional training
• Flexible working time
• Cooperation with top professionals around the globe
• Regular performance assessment
• Additional health and dental insurance
• Additional paid vacation days for students
• Regular team buildings and office parties
• Private parking zone
• Multisport card
• Game and relax zone

Why Sirma should be your choice
• Knowledge sharing
• Interesting case studies
• Referral bonus scheme
• Working with cutting-edge technologies
• Innovative and dynamic projects
• Sport events
• Charity campaigns
• Fruits at the office
• Opportunity to work from any Sirma office
• Large terrace with great view

Apply now!
We are waiting for your CV!
There’s a lot going on at Sirma!
We're looking forward to meeting our next colleague :)

We will contact only the candidates selected for further consideration. Confidentiality is guaranteed. We thank all candidates for applying.