Remote Rust & C++ Migration Engineer

Sii Poland; Lublin; On-site; PLN 180,000 - 300,000; Full time

Benefits offered by this job

Great Place to Work

Medical care

Centre of internal trainings

Profit sharing

Open and accessible management team

Job summary

Sii Poland is seeking an experienced Software Engineer to migrate legacy C/C++ libraries to memory-safe Rust equivalents, with deep integration work to bridge feature gaps. The role is fully remote and allows work from anywhere in Poland.

You will port libraries, build Rust FFI wrappers, and lead large-scale refactoring and dependency updates while ensuring minimal disruption for existing consumers. Strong English and cross-language expertise are essential.

Qualifications

• Minimum 5 years of experience in software development with a strong focus on Rust and C++.
• Deep expertise in unsafe code, FFI boundaries, and memory-safe migrations.
• Solid understanding of memory safety, pointer stability, and cross-language interoperability.
• Experience with Bazel/Blaze and dependency management.
• Strong debugging skills across memory, testing, and platform-specific build issues.
• Ability to communicate effectively with stakeholders and justify security-driven changes.
• Advanced level of English.

Responsibilities

• Migrating legacy C/C++ libraries to memory-safe Rust alternatives.
• Building and maintaining secure C++ shims and Rust FFI wrappers.
• Driving large-scale refactoring and dependency updates across numerous targets.
• Performing differential testing, validation, and large-scale integration testing.
• Evaluating performance and security trade-offs and providing data-driven recommendations to stakeholders.
• Managing cross-team dependencies and review bottlenecks.
• Structuring migrations into small, reviewable stacks to streamline approvals and reduce failures.

Skills

Rust

C++

Memory safety

FFI

Cross-language interoperability

Debugging

English

Tools

Bazel/Blaze

Crubit

Rust FFI tooling

Job description

Sii Poland is seeking an experienced Software Engineer to migrate legacy C/C++ libraries to memory-safe Rust equivalents, with deep integration work to bridge feature gaps. The role is fully remote and allows work from anywhere in Poland.

You will port libraries, build Rust FFI wrappers, and lead large-scale refactoring and dependency updates while ensuring minimal disruption for existing consumers. Strong English and cross-language expertise are essential.