Senior Backend Engineer (Python/Java) — FinTech Microservices

BTSE; Województwo pomorskie; Hybrid; PLN 180,000 - 240,000; Full time

Benefits offered by this job

Competitive Pay & Bonuses

Holistic Well-being & Balance

Dynamic, Inclusive Culture

Job summary

BTSE is seeking a Senior Software Engineer who blends technical execution with strategic problem solving. This IC role leads internal initiatives, translating operational pain into robust, scalable software across the company.

You will design and maintain Web Applications and Microservices using Python (FastAPI) and HTML/JavaScript, while ensuring RESTful integrations and MVC compliance. Collaboration with business partners is essential to drive enterprise-wide impact.

Qualifications

• 5+ years backend development with Python or Java.
• Experience building web apps using REST APIs, HTML, and JavaScript.
• Strong understanding of MVC and REST best practices.
• Advanced SQL (PostgreSQL) and data integrity design.
• Unix/Linux development and operational experience.
• Experience with Docker and CI/CD pipelines.

Responsibilities

• Lead translation of business needs into scalable technical roadmaps.
• Design and maintain high-performance web applications and microservices (MVC, Python FastAPI).
• Architect internal services following REST best practices for long-term scalability.
• Bridge tech and business teams to align on value of technical solutions.
• Research and adopt new tools to automate manual processes.

Skills

Python

Java

Async frameworks

REST APIs

MVC architecture

PostgreSQL

Unix/Linux

Docker

GitLab CI/CD

Communication

Tools

Docker

GitLab CI/CD

Job description

BTSE is seeking a Senior Software Engineer who blends technical execution with strategic problem solving. This IC role leads internal initiatives, translating operational pain into robust, scalable software across the company.

You will design and maintain Web Applications and Microservices using Python (FastAPI) and HTML/JavaScript, while ensuring RESTful integrations and MVC compliance. Collaboration with business partners is essential to drive enterprise-wide impact.