Senior Python Engineer

Sofia - Bulgaria

Monthly Salary: Not Disclosed

Posted on: 30+ days ago

Vacancies: 1 Vacancy

Job Summary

FIRST.is a dynamic and innovative global technology company that provides B2B SaaS solutions for online sports platforms. We are at the forefront of innovation empowering gaming partners with revolutionary sportsbook solutions. Our cutting-edge sportsbook software premium data feeds and unwavering commitment to partner success are reinventing the gaming industry.

About the role

We are looking for a Senior Python Engineer to join a new team that builds a new product from scratch. A modern API-driven platform designedaroundperformance scalability and seamless integrations. This candidate will join a small high-impact engineering team working in a fast-paced startup environment where autonomy agility and creative problem-solving arerequired. You will work closely with our productbackendand frontend teams to design and implement microservices API integrations and event-driven components contributing directly to the foundation of a scalable system architecture.

Responsibilities:

Design and develop backend microservices using Python (FastAPIasyncioetc).

Implement RESTful and streaming APIs withstrongfocus on performance and reliability.

Contribute to event-driven architectures (e.g. Kafka RabbitMQ Redis Streams or Celery-based systems).

Integrate with third-party APIs and services handling authentication error recovery and data normalization.

Design andoptimizedatabase schemas migrations and ORM layers.

Collaborate on CI/CD pipelines containerized deployments and environment management.

Drive continuous improvement in code quality performance and developer experience.

Participatein architecture discussions code reviews and system design sessions.

Requirements:

Strongproficiencyin Python with practical experience inFastAPIasyncio and typing. Flask Django experience as a plus.

Experience designing and maintaining microservice architectures.

Solid understanding of databases and migration tools (Alembic Django Migrations etc.).

Experience with message brokers / event-driven systems (RabbitMQ Kafka Redis Pub/Sub).

Familiarity with Docker CI/CD pipelines (GitLab CI GitHub Actions etc.).

Experience integrating external APIs (OAuth2 webhooks streaming endpoints REST).
Knowledge of testing frameworks (pytestunittest) and observability (logging tracing metrics).

Preferred:

Strong architectural mindset ability to design systems that scale.

Experience mentoring developers and leading technical decisions.

Exposure tocloud environments (DigitalOcean AWS GCP).

Familiarity with async event loops background tasks and real-time applications (WebSockets).

We offer:

An open-minded environment that values you
An international multicultural team
An amazing office environment
Food vouchers (180 BGN)
Additional health insurance
Sports card
21 days paid leave
Flexible working hours
Manicure barber massage breakfast and snacks in the office
Wedding and new baby bonus
Тeam building activities

If you are interested in joining our diverse and dynamic team we are looking forward to your application. Only short-listed candidates will be contacted. Confidentiality of all applications is assured!

By submitting your application you explicitly consent in accordance with Regulation (EU) 2016/679 (General Data Protection Regulation) to the processing of the personal data contained in your CV resume and/or motivational letter strictly for the purposes of the recruitment and selection process conducted by the Company. By applying to this job offer you also freely and expressly consent to the Company storing your personal data and considering your application for future employment opportunities in accordance with the Companys data retention policy and applicable legal requirements. You may withdraw your consent to the processing and/or storage of your personal data at any time without affecting the lawfulness of processing based on consent before its withdrawal by contacting sending an email request to the following address:

Why we need to process your personal data for another term:

to be able to contact you when we have a suitable position that matches your profile;
to be able to send you job offers which might be interested for you;
to contact you directly without needing you to go again through the whole selection procedure.

What we will continue to store for you

Your name email telephone number social media profile link/s picture from your CV;
Your professional experience;
Your skills language proficiency special info from your CV sent by you.

Required Experience:

Senior IC