Senior Python Developer

Transition Technologies PSC; Kielce; On-site; PLN 180,000 - 240,000; Full time

Job summary

A dynamic technology firm in Kielce is seeking an experienced backend developer to implement scalable services for their analytics platform. The ideal candidate will have a strong background in Python, experience with cloud environments, and the ability to handle critical incidents. The role offers flexible employment options and an innovative work atmosphere with various benefits.

Benefits

Flexible working hours

Work on innovative projects

Friendly work atmosphere

Integration meetings

Internal competitions

Qualifications

• 5+ years of professional experience in backend development, preferably in analytics platforms.
• Strong proficiency in Python.
• Solid understanding of software architecture, scalability, and distributed systems.

Responsibilities

• Implement and maintain scalable backend services and platform components.
• Collaborate with cross‑functional teams to deliver new features.
• Ensure high‑quality, stable solutions under time pressure.

Skills

Python

Backend development

Cloud environments (GCP)

Kubernetes

Apache Spark

Education

Bachelor's or Master's degree in Computer Science

Tools

Pandas

FastAPI

Job description

_What will you do?

Responsibilities :

• Implement and maintain scalable backend services and platform components for the analytics platform based on existing architecture.
• Collaborate with cross‑functional teams and maintain direct communication with clients to deliver new features and resolve issues.
• Ensure high‑quality, stable solutions, including in situations requiring rapid response.
• Diagnose and resolve complex technical problems, including critical issues under time pressure.
• Share knowledge and best practices within an experienced team, fostering a culture of continuous improvement.
• Stay current with emerging technologies to drive innovation and efficiency.

_Who are we looking for?

Requirements :

• Bachelor’s or Master’s degree in Computer Science, Software Engineering, or a related field.
• 5+ years of professional experience in backend development, preferably in analytics platforms.
• Strong proficiency in Python.
• Solid understanding of software architecture, scalability, and distributed systems.
• Experience with data manipulation libraries such as Pandas or Polars.
• Familiarity with cloud environments (e.g., GCP) and container orchestration tools like Kubernetes or Docker Swarm.
• Knowledge of FastAPI or similar frameworks for building high‑performance APIs is an asset.
• Experience with Apache Spark, Ray.io, or Daft (getdaft.io) is considered an advantage.
• Ability to handle critical incidents under time constraints without compromising quality.

_Why is it worth it?

What can we offer :

• Flexible forms of employment and working hours (CoE or B2B)
• An interesting, challenging job in the dynamically developing Capital Group company;
• Work on innovative projects using modern technologies;
• Direct impact on shaping the image of the Capital Group’s companies on the market;
• Possibility to develop competences in a wide range;
• Stability of employment and a friendly work atmosphere;
• Cool benefits, among others integration meetings, internal company competitions, fruit Tuesdays, sweet Thursdays and much more;