Senior C++ Backend Engineer

Quick Facts

• Role: Senior C++ Backend Engineer

• Focus: Real-time processing of large volumes of data; migration from a multilayer C++/SWIG/Python backend to native C++

• Work model: Flexible hybrid; ~2 weeks on-site initially, then a few days per month

• Contract: Regular employment or B2B

• Location: Gothenburg, Sweden

• Rate: 200–360 PLN/h

Description

Design and optimize a native C++ backend to improve how data is processed, transferred, and cached in real-time systems. You’ll move from a multilayer C++/SWIG/Python stack toward a maintainable native C++ architecture while tackling demanding performance challenges.

Responsibilities

• Redesign and develop backend architecture, moving from multilayer C++, SWIG and Python toward native C++

• Design and optimize data flows for processing and transferring large volumes of data in real time

• Build backend components for high throughput and low latency

• Identify and resolve performance bottlenecks in data processing and transfer

• Develop and optimize local caching mechanisms

• Collaborate on technical decisions and deliver a maintainable backend solution

Requirements

• Extensive expertise in C++ and backend development

• Proven experience designing and optimizing data flows for large-scale data processing and transfer

• Strong understanding of real-time systems, high-throughput architectures, and low-latency performance

• Practical experience with local caching mechanisms and their performance trade-offs

• Familiarity with GraphQL and its use in backend systems

• Fluency in English

Benefits

• Flexible hybrid work arrangement

• Contract options: regular employment or B2B

• Rate: 200–360 PLN/h