Senior Backend Developer, Python

Holycode

Senior Backend Developer at Holycode developing scalable backend applications using Python and AI-assisted tools. Collaborating with cross-functional teams and optimizing application performance in agile environments.

Posted 7/17/2026full-timeRemote • 🇷🇸 SerbiaSeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in designing and developing scalable backend applications using Python, with a strong focus on building high-performance RESTful APIs and optimizing database models. Proficient in utilizing AI-assisted development tools and adhering to best engineering practices to ensure code quality and maintainability.

Highest-signal resume keywords

Python Backend DevelopmentFastAPI FrameworkDatabase Design and SQLREST API DevelopmentAI-Assisted Coding Tools

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Applicant Tracking System Keywords

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Hard Skills

PythonFastAPIDjangoFlaskPostgreSQLMySQLNoSQLAsynchronous ProgrammingGitDocker

Soft Skills

Problem-SolvingCollaborationMentoring

Tools & Technologies

AWSAzureGCPRailwaySupabaseOpenAPISwagger

Certifications & Qualifications

Bachelor's Degree in Computer ScienceSoftware Engineering

Industry Keywords

Backend DevelopmentSoftware EngineeringAgile EnvironmentTechnical DocumentationCode Reviews

Tech Stack

Tools & technologies

AWSAzureCloudDjangoDockerFlaskGoogle Cloud PlatformMySQLNoSQLPostgresPythonSQL

About the role

Key responsibilities & impact

Design, develop, and maintain scalable backend applications using Python
Build high-performance RESTful APIs and backend services
Design and optimize relational and NoSQL database models
Use AI-assisted development tools (such as Claude Code, Codex, Gemini, or similar) as an integral part of the software development lifecycle, including implementation, testing, debugging, and code reviews
Develop clean, maintainable, and well-tested code following best engineering practices
Collaborate closely with frontend developers, product managers, QA engineers, and other cross-functional team members
Participate in architectural discussions and contribute to technical decision-making
Optimize application performance, scalability, and security
Integrate third-party services and APIs
Write and maintain technical documentation
Perform code reviews and mentor other developers when needed
Stay up to date with emerging backend technologies, frameworks, and engineering best practices
Work in an agile environment with a strong focus on delivering high-quality software

Requirements

What you’ll need

Bachelor's degree in Computer Science, Software Engineering, or related field
Minimum 5 years of professional backend development experience
Strong professional experience building backend applications with Python
Strong experience with FastAPI (preferred), Django, Flask, or similar Python backend frameworks
Experience designing scalable backend architectures
Strong experience in database design, data modeling, and SQL databases
Proven experience using AI-assisted coding tools (such as Claude Code, Codex, Gemini, or similar) to improve productivity while maintaining code quality, security, and engineering best practices
Experience with PostgreSQL, MySQL and/or NoSQL databases
Experience building REST APIs
Experience with asynchronous programming
Experience monitoring and debugging production systems
Knowledge of OpenAPI/Swagger for API documentation
Strong knowledge of software design principles
Experience with Git and Docker
Experience deploying applications to cloud platforms (AWS, Azure, GCP) or modern hosting platforms such as Railway, Supabase
Experience writing automated tests and ensuring code quality
Excellent problem-solving skills
Fluent in spoken and written English

Benefits

Comp & perks

Full-time employment with flexible working hours
Work equipment provided
100% paid sick leave up to 30 days
25 days of paid vacation, plus one additional paid vacation day for every two years spent in the company
Private health insurance
Employee Referral Program
Modern office in Belgrade with a fully stocked kitchen and game area
Weekly team meals: Tuesday breakfast, Pizza/Barbecue Wednesday, and Friday lunch
English and German language lessons during working hours
New Year's gifts and theater shows for employees' children
Opportunity to work on innovative products using modern technologies
Supportive environment focused on learning, knowledge sharing, and professional growth