Senior software engineer (c++, linux/macos)

About the Role

You will be a senior engineer on the x360 Sync team at Connect Wise, owning development of the mac OS agent — a native desktop application at the heart of the x360 Sync backup and file sync product. The application is primarily written in C++, with Swift and Objective-C used for mac OS-native components. You will be stepping into a mature codebase with real ownership and scope from day one.

Key Responsibilities

Design, implement, and maintain features in the x360 Sync mac OS agent, working primarily in C++ with Swift and Objective-C for platform-native integrations Debug and resolve production issues, including deep-dive investigation across the application stack and mac OS system APIs Participate in architecture and design discussions, contributing technical recommendations grounded in mac OS platform best practices Write clean, well-tested code and take part in code reviews — both giving and receiving constructive feedback Collaborate with product managers, QA engineers, and cross-functional teams to deliver features on schedule without cutting corners on quality Contribute to improving engineering standards, internal tooling, and development processes Help scope and break down complex problems into well-defined tasks for yourself and the broader team Document technical decisions, system behavior, and processes clearly for teammates and future contributors

Mandatory skills

C++, Linux, Linux System Programming, Multithreading, IPC OR XPC, Sockets OR "Socket Programming, mac OS, Objective-C OR "Objective-C++, Endpoint Security.

Required Qualifications

Technical

Solid professional experience writing C++ in a production environment Strong working knowledge of mac OS internals, frameworks, and platform APIs (e.g. NSFile Provider, FSEvents) or Linux Proficiency in Swift and/or Objective-C for mac OS-native development Experience debugging complex, multi-threaded, or multi-process applications Experience with software development workflows, including version control (Git), code review, and CI/CD pipelines

Non-Technical

Strong written and verbal English communication skills — you'll work with distributed teams and will need to articulate technical ideas clearly Ability to work independently and manage your own priorities in a remote or hybrid environment Comfortable working in an established codebase with existing design decisions you didn't author

Nice-to-Have Qualifications

Experience with file sync, backup, or storage-related products Familiarity with Windows desktop development (the x360 Sync agent also has a Windows counterpart) Exposure to cross-platform C++ codebases targeting both mac OS and Windows Experience working in an Agile/Scrum team environment Background in developer tooling, performance profiling, or low-level system programming on mac OS

Working Condition: Hybrid / Remote - Depending on the location.

Why Join the x360 Sync Team

The x360 Sync team works on software that businesses genuinely depend on — keeping their files safe and in sync. You won't be building another internal dashboard; your work ships to real customers and has a clear, direct impact. The team values technical rigor, honest communication, and getting things done without unnecessary ceremony. If you enjoy owning hard problems in a native desktop environment and want your expertise in C++ and mac OS to be the main event rather than a footnote, this is the role for you.

The Senior Software Engineer for x360 Sync is responsible for designing, building, and maintaining the mac OS desktop agent application that keeps critical business data in sync for thousands of customers. Working in C++, Swift, and Objective-C, you will collaborate closely with a cross-functional engineering team to deliver reliable, high-quality software — from feature development through to production support. This role requires strong technical depth, clear communication, and a genuine care for the end-user experience.