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Sii Poland

Senior Python Developer (f/m/x)

Sii Poland
Ukraine · Full-time · Mid-Senior

Join Sii as a Senior Python Developer with Golang. Our team will be responsible for accelerating software development and strengthening security through the development of libraries, packages, and tools for two key languages Python and Go (Golang).

The team creates and maintains cutting-edge tools, introduces the latest development solutions, and supports product teams dedicated to cloud storage. The project includes the development of infrastructure, development tools, and the Go and Python ecosystem within a multi-module code repository.

Sii ensures that all employment-related decisions are made solely on the basis of qualifications and competencies. We are committed to equal treatment of all individuals, regardless of any protected characteristics, and promoting a diverse and inclusive work environment.

Your tasks

  • Creating new functionality and maintenance in Python
  • Updating rServer to the latest Go SDK/runtime versions and maintaining the Go ecosystem in the repository
  • Creating and developing tools for integrating and updating Go libraries (internal and external)
  • Improving development tools: debugging, IDE integration and static analysis
  • Implementing best practices, creating technical documentation

Requirements

  • Minimum 8 years of experience as a programmer with Python
  • Practical experience working with Golang (tools, libraries, ecosystem)
  • Ability to work with low-level code or libraries (C/C++ - an added advantage)
  • Experience in profiling, performance optimization, and good knowledge of system issues
  • Very good knowledge of English - min. B2/C1
  • Open to attending meetings with the US team in the afternoons
  • Tax Residence in Ukraine is required, and fluency in the Ukrainian language

Nice to have

  • Experience working with large systems and build tools (e.g. Bazel)

Job no. 260128-PK1YH

Sii ensures that all hiring decisions are made solely on the basis of qualifications and competence. We are committed to equal and fair treatment of all, regardless of legally protected characteristics. At Sii, we promote a diverse and inclusive work environment, in full compliance with applicable anti-discrimination laws.

Benefits For You

Refferals program

Solid financial situation

Many experts you can learn from

Contracts with the biggest brands

Mentoring program

14 authentic core values

Inclusive culture based on dialogue

Regular integration events and trips

Passion Sponsorship Program

Open and accessible management team

Profit sharing

Welcome packs & occasional gifts

Key Skills

Ranked by relevance

python golang storage cloud
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Posted
Jan 31, 2026
Type
Full-time
Level
Mid-Senior
Location
Ukraine
Company
Sii Poland

Industries

IT Services IT Consulting

Categories

Engineering Information Technology

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