Senior Python Developer

ATEZ YAZILIM TEKNOLOJİLERİ A.Ş.

About Us

At ATEZ, we constantly reimagine the future of technologies and excellence in cross-border trade. To achieve, we;

• stand at the forefront of AI innovation
• accelerate groundbreaking technology
• build cutting-edge solutions
• think of venturing outside of the norm

MUST HAVE

• 5+ years of professional experience with Python
• Advanced experience with FastAPI or similar async frameworks (strong grasp of async/await and concurrency models)
• Relational database (RDBMS) design and optimization — particularly PostgreSQL
• ORM and migrations with SQLAlchemy/SQLModel + Alembic
• Strong command of operational concepts such as containerization (Docker), Kubernetes, and secret/environment management
• RESTful API design (including validation with Pydantic)
• XML processing (lxml, xmltodict)
• Test discipline with TDD and/or BDD practices; code quality tooling (pytest, mypy, ruff)

NICE TO HAVE

• CI/CD pipelines (e.g., GitHub Actions)
• Observability / monitoring (e.g., ELK stack, distributed logging, error tracking)
• Familiarity with NoSQL solutions
• Basic machine learning / data analysis capability
• Domain experience in customs, international trade, or finance

RESPONSIBILITIES

• Develop and enhance high-volume declaration processing and compliance checks
• Design and implement new rules and control mechanisms
• Develop and maintain concurrent external service integrations (exchange rate, tariff queries, etc.)
• Develop ML/AI-based anomaly detection modules
• Database schema design and migration management
• Improve CI/CD pipelines
• Conduct code reviews and maintain technical documentation

TECH STACK

• Language & Framework: Python 3.11+, FastAPI, Uvicorn, Gunicorn
• Database: PostgreSQL, SQLModel/SQLAlchemy, Alembic
• Infrastructure: Docker, Kubernetes, Helm
• Security & Secrets: Secret/environment management (Vault), OAuth2/OIDC
• Monitoring: Distributed logging and error tracking (ELK, Sentry)
• CI/CD: GitHub Actions
• Testing & Quality: Pytest, mypy, ruff, coverage
• Other: lxml, httpx, rapidfuzz, tenacity

Work Environment:

• Hybrid working days (4 days remote work, 1 fixed-day office work)
• Our İstanbul office is located at Ayazağa, Sarıyer. (Skyland Offices)
• Minimal meetings, maximum productivity.
• Flexible working hours for work-life balance
• Regular team retreats and social events
• Complementary Health Insurance
• Competitive salary and benefits package
• Transportation expense compensation for taxi usage during office days
• Monthly meal card
• And much more!