5G Senior C++ Developer (f/m/x)

Sii Poland; Łódź; Hybrid; PLN 180,000 - 280,000; Full time

Benefits offered by this job

Great Place to Work

Centre of internal trainings

Profit sharing

Medical care

Regular integration events and trips

Open and accessible management team

Job summary

Sii Poland is looking for an experienced C++ Developer to join a US-based team focused on integrating customer software into hardware solutions. You will work on the 5G UE software stack and engage in systems integration and testing. The role allows for remote work, but some overlap with the EST time zone from 8:00 to 16:00 will be necessary for effective collaboration.

If you are passionate about telecommunications and software development, this opportunity may be the right fit for you.

Qualifications

• 6+ years of experience in software development with a strong focus on C++.
• Proven experience working with 5G UE software stack and systems integration.
• Hands‑on expertise in FreeRTOS and O-RAN testing.
• Fluent English.

Responsibilities

• Developing C++ software for the 5G UE software stack.
• Integrating various software components into hardware solutions.
• Conducting software testing to ensure quality.
• Supporting architectural and technological decision-making.
• Collaborating with cross‑functional teams to deliver integrated solutions.

Skills

C++

5G UE software stack

Systems integration

English

Tools

FreeRTOS

Python

Job description

We are looking for an experienced C++ Developer to join a US-based team focused on integrating customer software into hardware solutions. You will work on the 5G UE software stack and engage in systems integration and testing, contributing to cutting‑edge telecommunications projects. The role allows for remote work, but some overlap with the EST time zone from 8:00 to 16:00 will be necessary for effective collaboration. If you are passionate about telecommunications and software development, this opportunity may be the right fit for you.

Your tasks

• Developing C++ software for the 5G UE software stack
• Integrating various software components into hardware solutions
• Conducting software testing as necessary to ensure quality
• Supporting the team in making architectural and technological decisions
• Collaborating with cross‑functional teams to deliver integrated solutions

Requirements

• Minimum 6 years of experience in software development with a strong focus on C++
• Proven experience working with 5G UE software stack and systems integration
• Hands‑on expertise in FreeRTOS and O‑RAN testing
• Practical experience in software integrations and testing
• Fluent English

Nice to have

• Experience with Python for testing purposes
• Background in the Defense or Telecommunications industry

Job no. JOB-4NFM3

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

• Great Place to Work
• Solid financial situation
• Contracts with the biggest brands
• Centre of internal trainings
• Many experts you can learn from
• Open and accessible management team
• Profit sharing
• Passion Sponsorship program
• Regular integration events and trips
• Comfortable and well‑equipped offices
• MySii app
• Medical care